Entries |
Document | Title | Date |
20080315703 | Stator Core for Alternator and Motor - Disclosed is a stator core for a generator and a motor comprising a frame formed in a shape of a straight plate; and a plurality of coil winding portions spacedly formed in one side of the frame and projected from the one side thereof. The stator core forms a stator by bending the frame in a round shape so as to position the coil winding portions in an inner side of the frame, laminating the frame, and winding coils around the coil winding portions. Wherein projections are spacedly formed in the portions corresponding to the coil winding portions in the other side of the frame, and the projections compensates height differences generated on an outer wheel of the frame due to a plastic deformation that portions corresponding to grooves between the coil winding portions in the other side of the frame are projected when bending the frame in a round shape, thereby to maintain evenly a surface of the outer wheel of the frame. | 12-25-2008 |
20090026871 | Electric motors - An electric motor includes an armature core, a commutator including a plurality of commutator segments, a neck disposed between the armature core and the commutator, and a plurality of wires each connected between two adjacent commutator segments and wound around the armature core via the neck. The wires include a first wire connected between first two adjacent commutator segments and a second wire connected between second two adjacent commutator segments positioned opposite to the first two adjacent commutator segments with respect to the axis of the armature core. The first wire and the second wire extend along the neck such that they do not contact with each other. | 01-29-2009 |
20090039725 | BRUSHLESS MOTOR AND SERVO UNIT UTILIZING THE SAME - A servo unit is arranged to operate an actuator, and a brushless motor is utilized in the servo unit. The brushless motor includes a rotational portion provided with a shaft and a rotor magnet rotating integrally with the shaft, a bearing portion rotatably supporting the shaft, a housing provided with a cylindrical portion retaining the bearing portion and a base portion bulging radially outwards from an axially lower portion of the cylindrical portion, a stator provided with a stator core having an inner peripheral surface to radially oppose an outer peripheral surface of the cylindrical portion of the housing and coils formed by conductive wires wound around the stator core, and a motor circuit board disposed on an axially upper side of the base portion. The base portion of the housing is arranged on an outer peripheral surface with a substantially arcuate concave portion which is concave in a radially inward direction. The substantially arcuate concave portion contains a pin holder which is made of an electrically insulating material to hold a plurality of metal pins. The respective pins are electrically connected to the motor circuit board. | 02-12-2009 |
20090051241 | WINDING FORMER FOR A SADDLE COIL WINDING - A winding former with a winding support between a first plate and a second plate for a saddle coil winding made up from a thin layer HTSC, which is destined for a cylindrical armature of an electrical machine, and which has two longitudinal legs parallel to the armature axis between two winding ends, wherein the winding support for each winding end has a bearing surface, which enables the thin layer HTSC to be wound to form a saddle coil without damaging the HTSC thin layer. | 02-26-2009 |
20090102307 | Electric motor stator - An electric motor stator has a stator core and a plurality of windings wound around teeth of the stator core. Each of the windings has two tooth winding portions with a crossover wire extending therebetween. Each of the windings starts from a neutral wire and winds around a first tooth to form a first tooth winding portion and then winds around an opposed tooth to form a second tooth winding portion with the crossover wire extending as a power wire. Thus the second tooth winding portion is started from the power wire. A terminal end of the second tooth winding portion is drawn out and connected to the neutral wire. The stator core has an insulator having support portions for preventing the tooth winding portions from falling outwards. The power wire is held between the tooth winding portion and a slot bottom so as to be fixed. | 04-23-2009 |
20090102308 | WINDING ARRANGEMENT FOR ROTATING ELECTRICAL MACHINE - The present invention is intended to provide a winding arrangement of single star connection for a rotating electrical machine, capable of enhancing insulation performance in coils of the same phase. In such winding arrangement, a first coil U | 04-23-2009 |
20090102309 | LINEAR MATERIAL AND STATOR STRUCTURE - A stator structure includes: a stator core ( | 04-23-2009 |
20090121573 | Motor for electric power steering apparatus - [PROBLEMS] To provide a motor for EPS which can exhibit a desired performance while satisfying severe limitation on physical size. | 05-14-2009 |
20090121574 | DIRECT CURRENT MOTOR - A direct current motor is disclosed. The motor includes a stator, a commutator, an armature core, and brushes. The stator has a yoke and magnetic poles. The magnetic poles are arranged at a predetermined pitch along a circumferential direction of the yoke. The number of the magnetic poles is represented by the expression: 2×P (P is an integer not less than 2). The commutator has segments that are arranged in a circumferential direction of the commutator. The number of the segments is represented by the expression: P×N (N is an odd number not less than 3). The armature core is rotatable integrally with the commutator and includes teeth provided by the number represented by the expression: 2×P×N. A coil is wound around the teeth by distributed winding. Each one of the brushes is pressed against and contacts the segments. Two of the segments that are electrically short-circuited by one of the brushes are connected to each other by at least two coils that are arranged at an interval corresponding to an integral multiple of the pitch (360°/(2×P)) of the magnetic poles. | 05-14-2009 |
20090127964 | BRUSHLESS MOTOR - This brushless motor according to the present invention is provided with: a tubular stator case; a stator core; a rotore; a plurality of teeth which are integrally formed on an inner peripheral surface of the stator core; a coil bobbin mounted between the mutually adjacent teeth, which has a winding portion around which a coil is wound; a lead wire; and a wiring substrate which relays a connection between the lead wire and the coil, wherein: the coil bobbin has flange portions; one of the flange portions which is located on the inward in the radial direction has an enlarged member which protrudes outward from the surface of the flange portion; a pair of terminals which is connected to the wiring substrate is provided on the enlarged portion so as to be located more inward than a tip of the tooth in the radial direction. | 05-21-2009 |
20090140594 | STATOR FOR ROTARY ELECTRIC MACHINE, AND ROTARY ELECTRIC MACHINE USING THE STATOR - A stator for a multiple-phase rotary electric machine provided a stator core with slots and a coil formed of a plurality of windings for individual phases. Each winding has slot-accommodated portions held in different slots, turn portions connecting the slot-accommodated portions outside of the slots in an axial direction, and a return portion that connects two of the turn portions and changes a winding direction of the winding at given slots. The turn portions include specific turn portions which are the same in a circumferential position as the turn portion connected to the one of the return portion. The specific turn portions are located, in a radial direction, to be drawn apart from the rotor than the slot-accommodated portions connected to the specific turn portions. | 06-04-2009 |
20090146523 | STATOR FOR ROTARY ELECTRIC MACHINE, AND ROTARY ELECTRIC MACHINE USING THE STATOR - A stator for a multiple-phase rotary electric machine is provided with a stator core with slots and a coil formed of a plurality of windings for individual phases. each winding has slot-accommodated portions accommodated in different slots, turn portions connecting the slot-accommodated portions outside of the slots in an axial direction, and a return portion that connects two of the turn portions and changes a winding direction of the winding at given slots. The turn portions include specific turn portions which are the same in a circumferential position as the turn portion connected to one of the return portion. The first and second windings are jointed to each other via a joined portion disposed in a specific slot among the slots. | 06-11-2009 |
20090152975 | CENTRAL ELECTRICITY DISTRIBUTION MEMBER FOR ROTARY ELECTRIC MACHINE - A central electricity distribution member for a rotary electric machine, comprising connecting bus bars of respective phases for connecting, among coils of respective phases wound around a stator of the rotary electric machine, the coils of the same phases; a connecting bus bar for a neutral point for connecting the coils of the same phases wound around the stator of the rotary electric machine; a circular holding groove capable of receiving the respective connecting bus bars as the respective connection bus bars are insulated from one another; a bus bar insulating portion formed using insulating material; a bus bar-side positioning portion provided on each of the connecting bus bars; and an insulation-side positioning portion provided on the bus bar insulating portion, for performing positioning between the respective connecting bus bars and the bus bar insulating portion in cooperation with the bus bar-side positioning portion. | 06-18-2009 |
20090184599 | Alternator for Vehicle, Vehicle Equipped with Alternator, Method for Manufacturing Alternator for Vehicle, and Rotating Electric Machine for Vehicle - An alternator for a vehicle includes: a stator that is configured by a concentrated winding system in that a stator coil for a single phase is wound on a single pole; and a rotor with 16 or more poles, that is disposed to face the stator so as to be rotatable with a gap intervening therebetween, wherein a pole ratio of the rotor and the stator is 2:3. | 07-23-2009 |
20090189474 | Winding arrangement for an electrical machine - Presented is a winding arrangement for an electric machine that includes a laminated core that includes a yoke that includes a plurality of teeth each having flanks that form first wedge surfaces and a winding support area that has a trapezoidal cross-section. The arrangement further includes a coil winding, and a winding body configured to arrange the coil winding on one of the plurality of teeth. The coil winding has an inner area arranged opposite the first wedge surfaces and represents second wedge surfaces. The arrangement further includes a stop means disposed on the winding body and/or one of the plurality of teeth. The stop means is configured to limit movement of the winding body in a direction toward the yoke. The arrangement further includes a centering means configured to center the winding body on one of the plurality of teeth. | 07-30-2009 |
20090189475 | Motor, method for fabricating the same, and home appliance with the same - The present invention relates a motor, a method for fabricating the same and a home appliance with the same. | 07-30-2009 |
20090200887 | DYNAMOELECTRIC MACHINE - The present invention provides a dynamoelectric machine that suppresses the occurrence of insulation failure that accompanies oxidation of a stator core without lowering output, and that also suppresses stator temperature increases by transferring heat that is generated in a stator coil efficiently to a frame. | 08-13-2009 |
20090200888 | Rotating Electric Apparatus and Method for Connecting Stator Coils Thereof - Each pair of coils mutually connected in a stator winding is arranged in a fashion that a first coil of each pair of coils has an inner-circumferential-side coil terminal ( | 08-13-2009 |
20090212653 | ELECTRIC MACHINE WINDING ARRANGEMENT - Rotational electric machine stator winding arrangement characterized, inter alia, by at least one coil of each parallel circuit being discontinuous with the other coils of the corresponding circuit, and by coils configured to accept phase voltage not being adjacent coils having a point at the lowest potential of a corresponding circuit. | 08-27-2009 |
20090230805 | Motor for electric power steering apparatus - [Problems] To provide a motor for EPS which can exhibit a desired performance while satisfying severe limitation on physical size. | 09-17-2009 |
20090230806 | ELECTRIC MOTOR - An electric motor comprising a rotor having plural magnetic poles in the circumferential direction; and a stator whose teeth are disposed opposite to the periphery of the rotor, with an air gap interposed between the rotor and the stator, wherein the coil conductors are wound on the stator so that two stator magnetic poles may be formed by two coil units of a phase wound around stator teeth within the range of 360 electrical degrees subtended by the magnetic poles of the rotor; each of the two coil units forming the stator magnetic poles spans an electrical angle less than 180 electrical degrees; the two coil turns forming the two stator magnetic poles are laid out so that they may not overlap each other; and the coil conductors are so wound that the adjacent stator magnetic poles exhibit opposite magnetic polarities. | 09-17-2009 |
20090236927 | BRUSHLESS MOTOR INCLUDING STATOR CORE AND DISK DRIVE - A brushless motor is provided. A stator core has a plurality of teeth extending radially from an annular portion of the stator core. The number of the teeth is an integral multiple of the number of coil-drive phases. Coil relief holes for allowing coils to enter are formed on the motor base. The number of the coil relief holes is less than the number of the teeth by the number of the coil-drive phases multiplied by N (N is a natural number). The number of turns of the motor-drive coil wound around one of the teeth corresponding to a portion of the motor base where the coil relief hole is not formed is set to less than that corresponding to a portion of the motor base where the coil relief hole is formed. | 09-24-2009 |
20090243418 | MOTOR WITH NEUTRAL BUS RING CONNECTING MULTIPLE MOTOR COILS - A stator includes multiple motor coils. The motor coils include multiple U-phase coils, multiple V-phase coils and multiple W-phase coils which are arranged in a circumferential direction of a motor. A neutral bus ring connects the motor coils together. The neutral bus ring is divided into multiple bus ring members. Each bus ring member connects together any one of the U-phase coils, any one of the V-phase coils and any one of the W-phase coils. | 10-01-2009 |
20090251024 | ELECTRIC MOTOR - The present invention relates to an electric motor and to a method for manufacturing an electric motor. The electric motor comprises at least a stator ( | 10-08-2009 |
20090261680 | SPINDLE MOTOR, AND RECORDING AND REPRODUCING APPARATUS EQUIPPED WITH THE SAME - With a spindle motor | 10-22-2009 |
20090273253 | STATOR FOR ROTARY ELECTRIC MACHINE AND METHOD OF MANUFACTURING THE STATOR - A rotor provided in rotary electric machines comprises a stator core having a radial direction and slots provided with bottomed openings directed in the radial direction. The rotor also comprises a stator coil comprising slot accommodation portions being accommodated in the slots of the stator core and coil end portions each connecting mutually adjacent slot accommodation portions among the slot accommodation portions and respectively protruding from both end faces of the stator core. The stator coil is pre-formed into a cylindrical shape before the slot accommodation portions are accommodated into the slots of the stator core. The slot accommodation portions are formed to respectively have convex parts each protruding toward an opposite way to the slot openings, before the slot accommodation portions are accommodated into the slots. The convex parts are pressed by the stator core toward the openings during accommodation of the slot accommodation portions into the slots. | 11-05-2009 |
20090273254 | ENCAPSULATED STATOR OF A DYNAMO-ELECTRICAL MACHINE - A laminated core of a stator has windings which are arranged in slots and form end windings on the end faces of the laminated core. The end windings are embedded in an encapsulation compound, with the laminated core having a radially outer area formed with at least one axial recess of a contour which is closed in the circumferential direction and through which encapsulation compound can be introduced. | 11-05-2009 |
20090295251 | Multipole Permanent-Magnet Synchronous Machine Having Tooth-Wound Coils - The permanently excited synchronous machine ( | 12-03-2009 |
20090315426 | DIRECT-CURRENT MOTOR ARMATURE, DIRECT-CURRENT MOTOR, AND METHOD FOR WINDING COIL AROUND ARMATURE OF DIRECT-CURRENT MOTOR - In a direct-current motor armature | 12-24-2009 |
20090315427 | Slotless motor - A stator coil of a slotless motor is disclosed in which the stator coil is formed in such a manner that respective both distal ends of two unit coil bodies, each unit coil body arranged to face each other, are respectively coupled to form a plurality of circular coil bodies, each circular coil body having a different inner diameter, and a circular coil body having a smaller inner diameter is sequentially inserted into an inner side of a circular coil body having a larger inner diameter, whereby a horizontal width of the plurality of unit coil bodies of U, V and W phases is equal there among to cause the strength of the magnetic field of U, V and W phases to be equal, and to allow the stator to be accurately manufactured, thereby catering to a designer's intention and markedly simplifying the assembly processes. | 12-24-2009 |
20090322177 | ELECTROMAGNETIC ACTUATOR - An electromagnetic actuator for generating rotary motion, the actuator comprising an armature assembly and a stator assembly, the armature assembly having a plurality of magnets arranged in a ring shape, and a stator assembly comprising an electromagnet and at least on currently carrying conductor preferably arranged in a coiled configuration such that energisation of the coil causes the electromagnet to become active, and further comprising a shaft rotatable relative to the stator housing and with the armature assembly when the coil is energised. | 12-31-2009 |
20090322178 | COIL WIRE FOR COIL ASSEMBLY FOR ROTARY ELECTRICAL MACHINE - A coil wire for a coil assembly of a rotating electrical machine is provided such that sufficient space in braiding is secured when coil-wire-bundles bundling a plurality of the coil wires are braided. | 12-31-2009 |
20100019607 | SPOOL ASSEMBLY FOR AN ELECTRIC MACHINE - An electric machine includes a housing, a stator mounted within the housing, and a rotor including a spool assembly. The spool assembly includes a spool having a main body portion having a first end portion that extends substantially uninterrupted to a second end portion through an intermediate portion. The spool further includes a first plurality of mounting elements provided on the first end portion and a second plurality mounting elements provided on the first end portion. A star member is secured to the first end portion of the spool. | 01-28-2010 |
20100019608 | THREE PHASE ROTARY GENERATOR - A generator includes a stator and a rotor. An inner side of the stator has a plurality of wire slots which are arranged in parallel. Coils are wound in the wire slots. The stator has a shape of a round ring with a central axis. Each wire slot is inclined to the central axis of the stator. Such a structure serves to increase the induction area to prevent from magnetic saturation so as to have preferred induction voltage and current. The coil is wound from a first one of the wire slots to a second one of the wire slots, where the first and second wire slots are spaced by another wire slot. | 01-28-2010 |
20100052460 | ELECTRICAL ROTATING MACHINE - In a permanent magnet type electrical rotating machine having coils | 03-04-2010 |
20100066194 | ELECTRIC MACHINE - An electric machine, in particular an electrically excited claw pole generator for a motor vehicle, is provided, having a stator winding, the phase terminals of which may be connected in the manner of a pentagram to a rectifier system. The stator winding has a five-phase design, phase terminals situated in adjacent slots being interconnected at least once. All of the phase terminals may be interconnected are situated in adjacent slots. | 03-18-2010 |
20100072853 | THREE-PHASE MAGNETO GENERATOR AND TRANSPORT APPARATUS - A plurality of permanent magnets are provided at a rotor at equal angular intervals. A plurality of magneto coils are provided at a stator at unequal angular intervals. The number of the plurality of magneto coils is not a multiple of three. The plurality of magneto coils include U-phase magneto coils, V-phase magneto coils and W-phase magneto coils. The U-phase magneto coils are arranged and connected such that phases of currents passing through the U-phase magneto coils are equal. The V-phase magneto coils are arranged and connected such that phases of currents passing through the V-phase magneto coils are equal. The W-phase magneto coils are arranged and connected such that phases of currents passing through the W-phase magneto coils are equal. | 03-25-2010 |
20100096943 | Motor and electric power steering apparatus - A motor includes: a stator having 12n teeth at equal intervals in a circumferential direction of the motor, with a coil being formed on each of the teeth, where n is a natural number; a rotor having magnetic poles, number of magnetic poles being one of 2n, 10n and 14n, where n is a natural number; a three phase first coil group formed by star-connecting the coils formed on the odd-numbered teeth; and a three phase second coil group formed by delta-connecting the coils formed on the even-numbered teeth, connected to the three phase first coil group in parallel. | 04-22-2010 |
20100102665 | BRUSHLESS DC ELECTRIC MOTOR - The brushless DC electric motor comprises, a rotor including a shaft and a permanent magnet fixed on said rotor shaft, stator including a winding in the shape of a hollow cylinder and composed of a plurality of rhombic single coils made of flat wire. The single coils overlap each other in an imbricated manner, wherein the single coils are performed to form an offset at least in the region of two opposite corners. The winding have legs, wherein half of the legs are located in a first radius and half of the legs are located in a second radius. The motor further comprises a housing having two end plates and supporting said rotor and stator. | 04-29-2010 |
20100133944 | ROTATING ELECTRIC MACHINE AND DRIVE SYSTEM THEREOF - In a rotating electric machine, each phase of a plurality of three-phase windings is divided into a plurality of partial windings, disposed on a stator core. For example, the partial windings of the U-phase are distributively arranged on four U-phase winding areas | 06-03-2010 |
20100141078 | STATOR FOR ROTARY ELECTRIC MACHINE AND ROTARY ELECTRIC MACHINE USING SAME | 06-10-2010 |
20100148616 | Asynchronous AC induction electrical machines in cross-interlockingly series connection - At least two asynchronous AC induction electrical machines in series connection with the power source are respectively made with the main winding and control winding for operating the electrical machines, wherein the individually driven loading operations of the two electrical machines in cross-interlockingly series connection being series connected with the power source are led by the changes of individual electrical machine driving loading statuses to appear variable impedance operation so as to change the end voltage ratio between individual electrical machines in cross-interlockingly series connections. | 06-17-2010 |
20100148617 | Asynchronous AC induction electrical machines in cross-interlockingly parallel connection - At least two asynchronous AC induction electrical machines in parallel connection with the power source are respectively made with the main winding and control winding for operating the electrical machines, wherein the individually driven loading operations of the two electrical machines in cross-interlockingly parallel connection being parallel connected with the power source are led by the changes of individual electrical machine driving loading statuses to appear variable impedance operation so as to change the end voltage ratio between individual electrical machines in cross-interlockingly parallel connections. | 06-17-2010 |
20100148618 | STATOR AND WIRE WINDING METHOD THEREFOR - A stator, with a stator core, a plurality of windings with a plurality of in-phase windings and anti-phase windings, a plurality of slots, an insulating plate, a plurality of cylinders, and a plurality of teeth. The teeth protrude from the stator core. The winding is received in the slot and wraps around the tooth. The insulating plate is disposed on the surface of the stator core. The cylinders are disposed on the insulating plate. A transition line is disposed between two adjacent teeth and hangs on the cylinder. A plurality of supporting mechanisms is disposed on the cylinders. | 06-17-2010 |
20100148619 | STATOR AND WIRE WINDING METHOD THEREFOR - A stator, comprising a stator iron core, a plurality of stator windings comprising multiple in-phase windings and anti-phase windings, a plurality of end insulators, a plurality of teeth, and a plurality of slots. The winding wires of the in-phase windings are firstly wrapped around two adjacent teeth and then cross four teeth thereof. A wire winding method for a stator, comprising: wrapping the winding wires of the in-phase windings around two adjacent teeth; crossing four teeth; and wrapping the winding wires of the in-phase windings around next two adjacent teeth. The winding directions of the two adjacent teeth of the in-phase windings are opposite. The winding directions of adjacent teeth of the anti-phase windings are the same. | 06-17-2010 |
20100181860 | Method for making electrical windings for electrical machines and winding obtained by said method - This invention presents a novel method for designing and manufacturing electrical windings for electrical machines. The presented manufacturing technique gives possibilities for an increased filling factor compared to conventional technique and improved heat transfer through application of thermally conductive compounds. Proposed winding schemes avoid intersection between different winding layers in the end-winding region. This helps automating winding production, simplifies insulation between winding layers and, if this is necessary, simplifies insertion of the winding. Both these factors affect the cost and reliability of the winding. This method is applicable for a broad range of electrical machines and allows easy automation of the winding process. | 07-22-2010 |
20100187937 | ELECTRIC MACHINE HAVING CONDUCTOR LOOPS SITUATED IN SLOTS, AND METHOD FOR OPERATING THE ELECTRIC MACHINE - An electric machine, as well as a method for operating such a machine, particularly for motorically moving movable parts in a motor vehicle, having a stator and a rotor, slots being developed on the rotor, in which individual conductor loops of electric coils are situated, which are contacted to commutator segments of a commutator and to an evaluating unit, which ascertains rotational speed data from the ripple of a motor current signal. The number of individual conductor loops of the coils is selected in such a way that the sequence of the number of the conductor loops in the order of their commutation approximately represents a sine function. | 07-29-2010 |
20100187938 | Armature for rotating electrical machine and manufacturing method thereof - An armature for a rotating electrical machine, the armature includes a cylindrical core having a plurality of longitudinally extending slots that are dispersedly arranged in a circumferential direction; and coils wound around the slots, wherein each of the slots is formed such that an inner circumferential opening thereof that is open radially inwardly is smaller in a circumferential width than a slot interior positioned on a radially outer side of the inner circumferential opening, and linear conductors forming the coils are each formed to be larger in the circumferential width than the inner circumferential opening. | 07-29-2010 |
20100187939 | Manufacturing of segments with special end coils for cross-segment connection - A stator segment for a stator of a ring generator is provided. The stator segment includes a base element and a coil element attached to the base element. The base element includes a connection region, wherein the connection region is adapted for attaching a connecting coil element which connects the stator segment to a further stator segment. | 07-29-2010 |
20100213782 | FIVE-PHASE MOTOR WITH IMPROVED STATOR STRUCTURE - A five-phase motor includes a stator and a movable member movable relative to the stator in a preset direction. The stator includes a stator core provided with five slots within 360 electrical degrees thereof. The five slots are arranged in the preset direction at preset first pitches. The stator includes at least one set of five-phase stator windings. The five-phase stator windings are arranged in the five slots relative to each other such that each of the five-phase stator windings is wound at a preset second pitch. The second pitch substantially corresponds to two of the first pitches. | 08-26-2010 |
20100231082 | METHOD FOR PRODUCING THE COIL OF A ROTARY ELECTRIC MACHINE STATOR AND STATOR THUS OBTAINED - A stator which comprises a core, slots provided in the core and a coil comprising a plurality of windings, in which each winding consists of at least one conductor which is arranged in slots of the core associated with the winding, forming axial ripples and forming overall a spiral coaxial to axis A of the core which consists of a set of turns radially superimposed, wherein each conductor comprises a pair of electrical lead wires which are adjacent and which are arranged at the same radial dimension relative to one another, at each point of the conductor. The invention also proposes a method for constructing the stator. | 09-16-2010 |
20100244612 | AC MOTOR WINDING PATTERN - A motor winding arrangement that is capable of delivering relatively flat torque over a wide range of speeds, thus achieving increasing power throughout its operating range, is provided. In a multi-phase, e.g., three-phase, motor utilizing the winding arrangement of the invention, each winding layer corresponds to one phase of the motor and occupies every slot of the stator. The poles for each winding layer are comprised of concentric and non-overlapping coils. | 09-30-2010 |
20100264772 | DIRECT CURRENT MOTOR - A direct current motor is provided that includes an armature core, a commutator, coils, positive brushes, and negative brushes. The armature core includes a stator. The stator has magnets the number of which is represented by P (where P is an even number greater than or equal to six). The coils are wound about the teeth by duplex wave winding. Alternatively, the coils are wound about the teeth such that each pair of coils that are spaced apart by 180° are connected common ones of the segments. Each of the positive brushes and the negative brushes has an angular width WB, at which it slides on the segments. When the angular width of the arrangement pitch of the segments is represented by WP (WP=360°/the number of the segments), and the angular width of the clearance between each pair of circumferentially adjacent segments is represented by WU, the angular width WB is set to satisfy the expression: WB≦(4/P)×WP+WU. | 10-21-2010 |
20100283349 | POLYPHASE ELECTRICAL MACHINE - A polyphase electrical machine, in particular, a polyphase generator, includes a stator which features a core body having a circumferential slot pitch, and a winding configuration having a plurality of windings. It is provided that each winding and each slot of the group of slots that extends over one pole pitch is assigned to one of the phases, and the windings have winding sections that lie in assigned slots and between which, in each case, a winding-head connection is formed, the winding-head connections of different windings being disposed radially in layers relative to each other, and the number of phases being five. A method for producing a polyphase electrical machine is also provided. | 11-11-2010 |
20100289372 | ELECTRIC ROTATING MACHINE HAVING IMPROVED STATOR COIL ARRANGEMENT FOR REDUCING MAGNETIC NOISE AND TORQUE RIPPLE - An electric rotating machine is disclosed which includes a stator and a rotor. The stator includes a hollow cylindrical stator core and first and second three-phase stator coils. The stator core has a plurality of stator core teeth formed at a predetermined pitch in a circumferential direction of the stator core. Each of the first and second three-phase stator coils is comprised of three phase windings. Each of the phase windings of the first and second three-phase stator coils is wound around each of a predetermined number of the stator core teeth by a predetermined number of turns. The rotor has a plurality of magnetic poles the polarities of which alternate between north and south in the circumferential direction of the stator core. Further, the first and second three-phase stator coils are offset in the circumferential direction of the stator core to have a phase difference of π/6 therebetween. | 11-18-2010 |
20100289373 | SYNCHRONOUS MOTOR - Provided is a synchronous motor comprising a rotor that includes magnetic poles arranged at equal intervals in the circumferential direction, and a stator that includes stator teeth arranged at intervals in the circumferential direction. Stator teeth other than a reference tooth are displaced from positions corresponding to integral multiples of the phase difference of two-phase alternating currents with respect the stator tooth in electrical angle. Both a first-type coil supplied with a first phase and a second-type coil supplied with a second phase are wound by concentrated winding on the stator teeth arranged at the displaced positions. | 11-18-2010 |
20100289374 | STATOR AND MANUFACTURING METHOD THEREOF - The disclosed embodiments relate to a stator and manufacturing method of the stator in which the coil conducts of the stator have three phases (a U phase, V phase, and W phase), which are arranged in a distributed winding form in a plurality of slots of a stator core. The coil conductors of the three phases each include a slot conductor portion that is disposed in the slot, and a pair of coil end conductor portions disposed on both axial sides of the stator core to connect the slot conductor portions disposed in the different slots. The stator also includes a first side transition wire portion in each phase that is disposed further toward a radial inner side than an inner peripheral end surface of a tooth provided on each circumferential side of the slot so as to overlap another first side transition wire portions in the axial direction. | 11-18-2010 |
20100295405 | MOTOR - A motor includes: a stator including a stator core, a plurality of slot portions, and a plurality of coils, the stator core including a plurality of stator core pieces, the stator core piece including a teeth portion having a distal end portion and two side portions, a yoke portion, and a claw portion formed at one of the two side portions and at the distal end portion, the plurality of stator core pieces being connected so that a plurality of claw portions protrude in the same circumferential direction, the stator core thereby being formed in a cylindrical shape, each of the slot portions being formed between adjacent teeth portions and formed between the plurality of stator core pieces, the plurality of coils being inserted into the plurality of slot portions, the plurality of coils including a first coil, a second coil, and a third coil which form three phases, the first coil, the second coil, and the third coil being bridged between two of the slot portions, the first coil including a first coil end portion that protrudes from an edge face of the stator core in an axial direction, the second coil including a second coil end portion that protrudes from the edge face of the stator core in the axial direction, and the third coil including a third coil end portion that protrudes from the edge face of the stator core in the axial direction, the first coil, the second coil, and the third coil being arranged so that the first coil end portion, the second coil end portion, and the third coil end portion are intersected with each other; and a rotor disposed at an inner-peripheral side of the stator and rotatably supported. | 11-25-2010 |
20100308681 | ELECTRIC MOTOR - The windings ( | 12-09-2010 |
20100308682 | Stator Manufacturing Method for a Motor and Stator Utilizing the same - A stator manufacturing method for a motor comprises a preliminary step configured to provide a strip plate having at least one wound portion on a surface thereof; a winding step configured to provide a coil unit and wind the coil unit around the at least one wound portion of the strip plate; a rolling step configured to roll up the strip plate into an unshaped sleeve having a central hole, wherein the at least one wound portion and the coil unit are located inside the central hole; and a shaping step configured to shape the unshaped sleeve into a shaped sleeve. | 12-09-2010 |
20110001384 | MOTOR - A vibration motor includes: a core pivotally supported on a shaft; a commutator for supplying electric current to a coil; a commutator holder having through holes extending in an axial direction of the shaft; and chip type varistors fitted into the through holes. The commutator is provided with conductors extending in the axial direction of the shaft, and the conductors are inserted into the through holes and press-fixed to end electrodes of the chip type varistors. A first protrusion is provided on a first wall surface forming each through hole, and a second protrusion facing the first protrusion is provided on a second wall surface. | 01-06-2011 |
20110012466 | FRACTIONAL SLOT WINDING CONFIGURATION FOR ELECTRIC MOTORS - Methods and apparatus are provided for stator assembly for use with an electric motor assembly. The stator assembly includes, but is not limited to a stator core that has an inner surface and a plurality of stator slots defined in the inner surface. A fractional slot winding having a plurality of conductors is coupled to the stator core. Each stator slot contains a group of the conductors arranged in a radially adjacent configuration. The groups of conductors in each of the stator slots together form a plurality of concentric rings of conductors. The conductors in each mixed group are arranged such that conductors carrying differing phases of electric current are arranged in a radially alternating configuration. | 01-20-2011 |
20110012467 | FRACTIONAL SLOT MULTIPHASE MACHINES WITH OPEN SLOTS FOR SIMPLIFIED CONDUCTOR INSERTION IN A STATOR - A stator assembly for use with an electric motor includes, but is not limited to, a stator core having an inner surface and a plurality of open slots defined in the inner surface. The stator assembly also includes a winding having multiple conductors. The winding is coupled to the stator core such that a predetermined quantity of conductors is disposed within each open slot. The winding is configured to control a magnitude of a torque ripple produced by operation of the electric motor. | 01-20-2011 |
20110012468 | Stator and Radial Gap Motors Including The Stator - A stator for a radial gap motor is formed by winding a plurality of metal wires to form a hollow cylinder having a plurality of poles and a plurality of turns. Two ends of each metal wire are located on the same end of the cylinder and form a plurality of conductive members for electric connection with a circuit board. The stator is simple in structure and easy to manufacture. The stator can be utilized in various radial gap motors, so that the radial gap motors benefit from the advantages of the stator. | 01-20-2011 |
20110012469 | BRUSH MOTOR - A brush motor includes a stator with 2P magnetic poles and a rotor which includes a rotor core, a commutator and windings wound on the rotor core. The rotor core includes N teeth with a slot formed between adjacent teeth. The commutator includes M segments represented by Z | 01-20-2011 |
20110012470 | MOTOR - A motor comprises a stator and a rotor. The stator comprises 2P poles wherein P is an integer greater than one. The rotor comprises a shaft, a rotor core and a commutator fixed to the shaft. The commutator comprises m segments where m is an even integer greater than P. Every two adjacent segments are electrically connected by a winding unit so that the rotor winding comprises m winding units with at least one of the winding units comprising P coils connected in series; and each coil of each winding unit is directly connected to a corresponding two segments. | 01-20-2011 |
20110025161 | AXIAL FLUX STATOR AND METHOD OF MANUFACTURE THEREOF - An axial flux stator includes a plurality of magnetically permeable members, a plurality of windings, a back iron, and an encasing. The plurality of windings is associated with the plurality of magnetically permeable members to produce a plurality of winding-magnetically permeable member assemblies. The back iron is mechanically butt joint coupled to the plurality of winding-magnetically permeable member assemblies. The encasing maintains the butt joint coupling of the back iron to the plurality of winding-magnetically permeable member assemblies. | 02-03-2011 |
20110025162 | Rotating Electrical Machine - A rotating electrical machine, includes; a rotor in which a plurality of magnetic poles are provided in circumferential direction, and a stator within the rotor is disposed with a gap against the rotor, wherein; two stator magnetic poles are formed by winding coils in phase and by the stator core within 360° of electrical angle defined by the magnetic poles of the rotor; the coil turns that form respective stator magnetic poles have angular widths in circumferential direction of less than 180° of electrical angle; the coil turns that form the respective two stator magnetic poles are provided so as not to mutually overlap and are wound so that adjacent ones of the stator magnetic poles have mutually opposite polarities, and; in the stator, each winding of each coil consists of an external bridge wire, a turn portion, an internal bridge wire, and a turn portion in that order. | 02-03-2011 |
20110031840 | Electrical Drive Machine - In a drive system, including a stator and a rotor associated with an energy transmission system supplying energy to a load on the rotor, the drive function and the energy transmission function are largely independent of each other. A subharmonic air gap field portion is used for transmitting electric energy to a rotor winding. | 02-10-2011 |
20110050023 | MOTOR MAGNETIC POLE STRUCTURE - A motor magnetic pole structure including a first seat having multiple first insulating arms and a second seat having multiple second insulating arms. Multiple first coils are wound on the first insulating arms and multiple second coils are wound on the second insulating arms. The first and second silicon steel seats overlap each other with the first and second insulating arms alternately positioned. In this case, the first and second coils wound on the first and second insulating arms are alternately positioned to intersect each other. The first and second silicon steel seats can assembled as necessary to enhance compatibility of the silicon steel seats and lower manufacturing cost. Moreover, the winding operation of the coils can be speeded. | 03-03-2011 |
20110050024 | ELECTRIC MACHINE - A three-phase, high voltage motor for use in a scroll compressor includes a stator core having an annular rim and a plurality of teeth extending radially inward from the rim. Aluminum windings are wrapped around teeth of the plurality of teeth of the stator core. The windings are spaced 120 electrical degrees from each other. The motor further includes a rotor body that is rotatably mounted inside the stator core and includes an external surface facing the stator core. | 03-03-2011 |
20110074239 | SYNCHRONOUS MOTOR DRIVE SYSTEM - Provided is a synchronous motor including a rotor having magnetic poles distributed circumferentially along a rotation direction of the rotor at equal intervals, and a stator having stator teeth arranged circumferentially along the rotation direction of the rotor, each tooth wound with a stator coil by concentrated winding. Every M consecutive stator teeth belong to one of stator teeth groups arranged at equal intervals. The M consecutive stator teeth in each stator teeth group are arranged at intervals different from the intervals of the magnetic poles of the rotor. The stator coils wound around the M consecutive stator teeth are connected to separate terminals. A motor driver supplies currents of different phases to the stator coils via the respective terminals. | 03-31-2011 |
20110127875 | Schemes of interchangeable windings of electrical machines - Winding diagrams, in which there is no intersection of endwindings in space and which are suitable for interchangeable windings of electrical machines, are considered in the proposed invention. Winding diagrams of a three-phase, two-layer concentric winding with a 120° phase zone and a three-phase, three-layer concentric winding with a 180° phase zone are considered. The scheme of a three-phase two-layer concentric winding with 120° phase with a linear distribution of turns in phase coils is offered for improvement of MMF distribution. The scheme of a three-phase, three-layer concentric winding with 180° phase zone with trapezoidal distribution of turns in phase coils is also proposed for improvement of MMF distribution. | 06-02-2011 |
20110140563 | ALTERNATOR AND CORRESPONDING ELECTRIC SYSTEM - An alternator including a rotatably-assembled permanent magnet, the magnetization direction of the magnet being orthogonal to the rotation axis, and a winding with no iron core surrounding the magnet and having each turn in a plane substantially parallel to a plane containing the rotation axis, the winding extending across a dihedral angle from the rotation axis smaller than 75 degrees and, radially, over a distance ranging between one quarter and half of the magnet diameter. | 06-16-2011 |
20110148241 | Electric Motor - An alternator comprising a rotor having plural magnetic poles in the circumferential direction; and a stator whose teeth are disposed opposite to the periphery of the rotor, with an air gap interposed between the rotor and the stator, wherein the coil conductors are wound on the stator so that two stator magnetic poles may be formed by two coil units of a phase wound around stator teeth within the range of 360 electrical degrees subtended by the magnetic poles of the rotor; each of the two coil units forming the stator magnetic poles spans an electrical angle less than 180 electrical degrees; the two coil turns forming the two stator magnetic poles are laid out so that they may not overlap each other; and the coil conductors are so wound that the adjacent stator magnetic poles exhibit opposite magnetic polarities. | 06-23-2011 |
20110210638 | STATOR FOR ELECTRIC ROTATING MACHINE - A stator includes a stator coil comprised of electric wires each of which has in-slot portions received in slots of a stator core and turn portions located outside the slots to connect the in-slot portions. Each of the turn portions is stepped to have parallel parts that extend substantially parallel to a corresponding axial end face of the stator core. For each pair of the turn portions of the electric wires, which respectively protrude out of an adjacent pair of the slots of the stator core, the parallel parts of one of the turn portions overlap those of the other in the axial direction of the stator core. A clearance provided between one of the overlapping pairs of the parallel parts, which is positioned furthest from the corresponding axial end face of the stator core, is largest among all clearances provided between the overlapping pairs of the parallel parts. | 09-01-2011 |
20110273051 | Stator Core Winding Method for Motor and Structure Thereof - The present invention provides a stator core winding method for a motor and a structure thereof. The method includes preparing a stator core including a plurality of core cavities; winding a pair of second-phase coils into the plurality of core cavities of the stator core; winding a pair of first-phase coils, a pair of the second-phase coils and two pairs of third-phase coils into the plurality of core cavities of the stator core; and winding two pairs of the first-phase coils, a pair of the second-phase coils and a pair of the third-phase coils into the plurality of core cavities of the stator core. | 11-10-2011 |
20110298327 | FLUX-CONCENTRATING STATOR ASSEMBLY - A stator assembly for an electric motor includes an annular core centered about an axis of rotation of an inner rotor which the stator assembly surrounds. The stator assembly has a plurality of electrical windings, each wound in a respective spiral around the outer surface of the core and arranged for current to flow in the windings. In some embodiments, the respective spirals are spaced from and parallel with one another. The stator assembly may have pole pieces that substantially enclose the core and windings. The pole pieces may be configured to taper both radially outward and axially inward to thereby concentrate flux from the core to an inner surface of the pole pieces facing the rotor. | 12-08-2011 |
20110304236 | SYNCHRONOUS ELECTRIC MOTOR - Enhancing torque while reducing torque rippling. | 12-15-2011 |
20110304237 | STATOR SEGMENT UNIT ADAPTED TO BUILD A RING-SHAPED STATOR WHEN ASSEMBLED - A stator segment unit adapted to build a ring-shaped stator when assembled is provided. The stator segment unit includes a stator yoke with at least one stator tooth protruding from the yoke, at least one stator winding having a first winding section fixed close to the tooth, and a second winding section extending freely from the stator segment unit. | 12-15-2011 |
20120001512 | Electric Motor - An electrical machine comprising a stator ( | 01-05-2012 |
20120007460 | STATOR AND METHOD OF MANUFACTURING UNIT COIL TO BE USED THEREIN - A stator includes a stator core and a distributed winding type multi-phase coil. This coil includes unit coils made by winding a flat conductor wire in plural turns. The unit coils are mounted in slots of the stator core and connected with each other. Each unit coil includes an outer-layer coil and an inner-layer coil each being concentrically wound. Those two layer coils are made of a single continuous flat conductor wire. A winding start portion of the outer-layer coil and a winding end portion of the inner-layer coil form first and second connection end portions of the unit coil respectively. The first and second connection end portions are located separately on both edges of the unit coil above an upper end face of the stator core. The first connection end portion is placed close to an inner circumference of the stator core and the second connection end portion is placed close to an outer circumference of the stator core. The first connection end portions of the adjacent unit coils constituting the same phase are connected with each other. The second connection end portions of the adjacent unit coils constituting the same phase are connected with each other. | 01-12-2012 |
20120025659 | ARMATURE WINDING OF ROTATING ELECTRICAL MACHINE - According to one embodiment, there is provided a 3-phase 2-pole 2-layer armature winding, housed in 72 slots provided in a laminated iron core, a winding of each phase including six parallel circuits separated into two phase belts. Upper coil pieces of first and fourth parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, and lower coil pieces of the first and fourth parallel circuits are placed at 1st, 6th, 9th, and 10th positions, upper and lower coil pieces of second and fifth parallel circuits are placed at 2nd, 5th, 8th, and 11th positions, and upper coil pieces of third and six parallel circuits are placed at 1st, 6th, 9th, and 10th positions, and lower coil pieces of the third and six parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, from the center of a pole. | 02-02-2012 |
20120043845 | Sensorless Three-Phased BLDC Motor and Stator thereof - A sensorless three-phased brushless direct current (BLDC) motor comprises a stator, a rotor and a driving unit. The stator has a first-phased coil, a second-phased coil and a third-phased coil. Each of the first-phased, second-phased and third-phased coils has a varying inductance value. The varying inductance value has an inductance changing rate greater than 15%. The rotor has a plurality of magnetic poles, each having a magnetic pole face facing the stator. The driving unit has a power input end and a signal input/output end. The signal input/output end is coupled to the first-phased, second-phased and third-phased coils, and the power input end is used to receive power for maintaining operation of the driving unit. | 02-23-2012 |
20120043846 | MOTOR WITH IMPEDANCE BALANCED WINDING - A three-phase electric motor assembly is configured to include phase windings that are substantially equally distributed between radially inner portions and radially outer portions within axial slots of a stator core. At least two of the phase windings each include radial inner portions within selected slots and radial outer portions within other slots, such that each of the radial inner portions is positioned within a slot radially inward from the radial outer portion of another of the phase windings, and each of the radial outer portions is positioned within a slot radially outward from the radial inner portion of another of the phase windings. The motor assembly provides balanced impedance between the phase windings to minimize losses attributed to inter-phase circulating currents, increasing overall motor efficiency. The arrangement of the phase windings configures the winding for more direct exposure of at least a part of each phase winding to a cooling system for enhanced heat rejection from end coils. Methods for inserting partial phase windings that can be mechanically executed are also provided. | 02-23-2012 |
20120043847 | ELECTRIC MOTOR - An alternator comprising a rotor having plural magnetic poles in the circumferential direction; and a stator whose teeth are disposed opposite to the periphery of the rotor, with an air gap interposed between the rotor and the stator, wherein the coil conductors are wound on the stator so that two stator magnetic poles may be formed by two coil units of a phase wound around stator teeth within the range of 360 electrical degrees subtended by the magnetic poles of the rotor; each of the two coil units forming the stator magnetic poles spans an electrical angle less than 180 electrical degrees; the two coil turns forming the two stator magnetic poles are laid out so that they may not overlap each other; and the coil conductors are so wound that the adjacent stator magnetic poles exhibit opposite magnetic polarities. | 02-23-2012 |
20120062063 | MOTOR MAGNETIC POLE ASSEMBLY AND MOTOR MANUFACTURING METHOD USING THE SAME - A motor magnetic pole assembly includes a coil body, an H shape base, and two conductive portions. The coil body has a central shaft in a center and connection ends at two ends respectively. The H shape base includes a column and a first plate body, the coil body surrounds the column, and the central shaft is parallel with the column. The two conductive portions are respectively arranged on a surface of the first plate body and are spaced by a distance, and the two connection ends are electrically connected to the two conductive portions respectively. Therefore, the motor magnetic pole assembly may be precisely and quickly placed on a circuit board through an automation process, thereby increasing a processing speed of a production line. | 03-15-2012 |
20120080973 | ARMATURE FOR ROTARY ELECTRIC APPARATUS AND MANUFACTURING METHOD FOR THE SAME - A laminated core includes laminated core sheets each formed by press working. Each core sheet has a teeth portion corresponding to the teeth. An insulating film covers at least a portion of the laminated core corresponding to the teeth. A burr caused by the press working in each core sheet is located on a side of one end of the laminated core in a laminating direction of the laminated core. The burr of the teeth portion of one of the core sheets located at the one end is folded toward the other end of the laminated core in the laminating direction. | 04-05-2012 |
20120104893 | SALIENT POLE CONCENTRATED WINDING STATOR FOR ELECTRIC MOTOR - A salient pole concentrated winding stator for an electric motor includes an annular stator core and a plurality of coils. The annular stator core includes a plurality of teeth. The plurality of coils are wound around the teeth such as to have different phases on the teeth adjacent in a circumferential direction. Each of the coils includes a first winding end and a second winding end, and at least one of the ends extends across the coil of a different phase. An end portion of the first winding end of one of the coils of the same phase that are adjacent in the circumferential direction is directly joined to an end portion of the second winding end of the other coil to form a joint portion without using an electric-power collection/distribution member. The joint portion is covered with an insulating material. | 05-03-2012 |
20120217835 | Rotational Vibration Exciter - Provided is an rotational vibration exciter, and more particularly to an rotational vibration exciter which can accurately generate angular vibration of a printed circuit board including a moving coil for rotational excitation and angular vibration of a rotational shaft integrated with the printed circuit board including the moving coil by replacing a conventional cable as an external current supply line with a vertical flexible PCB. | 08-30-2012 |
20120228981 | Electric Machine - The invention relates to an electric machine comprising a stator ( | 09-13-2012 |
20120228982 | Stator coil segment for an electro mechanical transducer, in particular a generator and electro mechanical transducer, in particular electric generator - A stator coil segment for an electro mechanical transducer, in particular a generator for generating electric energy from mechanical energy, includes a first coil which is arranged at a first radial position along a radial direction and adapted to be connected to an input terminal of a first power electronic device. The radial direction is perpendicular to a rotation axis of the electro mechanical transducer. Further, a second coil is arranged at a second radial position along the radial direction and adapted to be connected to an input terminal of a second power electronic device, wherein the second radial position is different from the first radial position. | 09-13-2012 |
20120242183 | ARMATURE WINDING OF ROTATING ELECTRICAL MACHINE - According to one embodiment, there is provided a 3-phase 4-pole 2-layer armature winding of a rotating electrical machine. A winding of each phase of the armature winding forms a series coil. Each series coil includes upper coil pieces and lower coil pieces which are connected each other at a connection side coil end and a counter-connection side coil end, the upper coil pieces and lower coil pieces being placed in 54 slots provided in an armature core. At least one coil piece of the upper and lower coil pieces, provided in at least one of an innermost position and an outermost position from the center of a phase belt of each phase, is replaced with a coil piece of an adjacent phase. | 09-27-2012 |
20120262023 | AXIAL AIR GAP MACHINE HAVING STATOR AND ROTOR DISCS FORMED OF MULTIPLE DETACHABLE SEGMENTS - Rotor and stator segments for a generator and motor apparatus are provided. The apparatus includes: a pair of parallel, spaced apart stator segments, each stator segment comprising a stator winding set; and a rotor segment slidably coupled to the pair of stator segments, the rotor segment comprising a magnet and being dimensioned to fit between the parallel, spaced apart stator segments. The apparatus may include a support structure, the rotor segment being slidably coupled to the support structure and the stator segment being attached to the support structure. The apparatus may be a rim generator, wind turbine generator or other electrical machine. The stator winding set includes a stator winding, and may include other electrical or electronic components, including possibly a power factor capacitor, direct current filtering capacitor, supercapacitor, and one or more diodes. The stator winding set may be encapsulated within the stator segment. | 10-18-2012 |
20120306309 | STATOR OF ROTATING ELECTRICAL MACHINE AND ROTATING ELECTRICAL MACHINE - A stator of rotating electrical machine includes a stator core and stator coils. The stator coils have n number (where n≧6) unit coils, a first coil group and a second coil group. The unit coils of the first coil group include a first unit coil located nearest the first power supply terminal. The unit coils of the first coil group include a second unit coil. The unit coils of the first coil group include a third unit coil located third nearest the first power supply terminal and adjacent to the second unit coil of the second coil group. The unit coils of the second coil group include a third unit coil located third nearest the second power supply terminal and adjacent to the second unit coil of the first coil group. | 12-06-2012 |
20120319521 | STATOR MANUFACTURING METHOD AND STATOR - A stator manufacturing method which manufactures an insulated conductor coil and mounts this coil to the core, the insulated conductor coil being formed by deforming an insulated conductor into a shape having rectilinear in-slot conductor sections and coil end sections having bent sections, the conductor having an enamel layer formed on the outer periphery thereof and also having an extruded resin coating layer formed on the outer periphery of the enamel layer, comprises: a first step of forming the conductor coil by deforming the conductor to form the bent sections while the coating layer of the conductor is in a non-crystalline resin state, a second step of heating the extruded resin coating layer of the conductor coil to change into a crystalline resin state to a temperature higher than or equal to the glass transition temperature; and a third step of mounting the conductor coil to the core. | 12-20-2012 |
20130026874 | ROTARY ELECTRIC MACHINE - A motor includes a driving shaft, a rotor attached to the driving shaft, and a stator having a substantially cylindrical stator core provided around the rotor, and a plurality of coils wound around the stator core in a distributed winding manner The stator core includes three separated stator core parts aligned along a peripheral direction, and each of the coils is disposed so as not to lie astride any two of the three separated stator core parts. At least one coil end of the plurality of the coils is disposed to pass through an inner side relative to an inner peripheral surface of the stator core. | 01-31-2013 |
20130049514 | ELECTRIC ROTATING MACHINE - The electric rotating machine includes a stator winding constituted of conductor segments each having a pair of in-slot portions and a coil end section projecting from both axial ends of a stator core. The coil end section includes a joint-side end portion having a skew portion intersecting with another one of the conductor segments at an axial end of the stator core. The skew portion is formed with a joint end portion at an extremity thereof, the joint end portion being formed with a conductor exposed portion where an inner conductor is exposed and joined to a conductor exposed portion of another conductor segment. A joint area between the joint end portions and a vicinity thereof are covered by an insulating resin member. The insulating resin member is thicker at a portion covering the conductor exposed portions than at a portion covering other than the conductor exposed portions. | 02-28-2013 |
20130076188 | ELECTRIC ROTATING MACHINE - An electric rotating machine includes a rotor and a stator. The rotor has a plurality of pairs of magnetic poles. The stator includes a stator core and a stator coil that is comprised of a plurality of phase windings wound on the stator core. The stator core has, for each of the phase windings of the stator coil, n circumferentially-consecutive single-phase slots, in which only the phase winding is received, per magnetic pole of the rotor, where n is a natural number not less than 2. Each of the phase windings of the stator coil has first to kth sections that are sequentially arranged from one end to the other end of the phase winding, where k is a natural number not less than 2. The first section is received in different ones of the single-phase slots for the phase winding from the kth section. | 03-28-2013 |
20130088115 | PERMANENT-MAGNET ELECTRIC MOTOR COMPRISING A SEGMENTED STATOR - An electric motor ( | 04-11-2013 |
20130127288 | ELECTRIC MACHINE WITH INSULATOR SPACER - A stator assembly for an electric machine including a stator core supporting a plurality of electrical conductors. A plurality of elongated insulator spacers is interwoven between the conductors proximate connection ends thereof in axially spaced relation to the stator core. | 05-23-2013 |
20130162095 | SEGMENTED STATOR ASSEMBLIES HAVING END CAPS - Segmented stator assemblies having a plurality of stator segments and a plurality of end caps are disclosed. According to one example embodiment, a segmented stator assembly includes a plurality of stator segments and a plurality of end caps. Each stator segment has a yoke portion and a tooth portion extending from the yoke portion. Each end cap is positioned over one of the stator segments. Each end cap includes a body portion positioned at least partially over the yoke portion of its associated stator segment. At least one of the body portions includes at least a first post that cooperates with a post of an adjacent end cap to define a first wire management tie-down. The stator assembly further includes a stator wire coupled to the first wire management tie-down. Stator assemblies and end caps having other wire management and routing features are also disclosed. | 06-27-2013 |
20130181569 | BUS BAR, MOTOR, AND PROCESS FOR PRODUCING THESE - A bus bar which electrically connects end portions of a plurality of conductive lines and a method for manufacturing the bus bar are such that an intermediate region of a single wire rod is folded to define a plurality of terminal forming portions extending to a lateral direction of the wire rod. The whole wire rod including the terminal forming portion is rolled. The rolled wire rod is bent into a certain shape. | 07-18-2013 |
20130200742 | STATOR, BRUSHLESS MOTOR, STATOR MANUFACTURING METHOD - A stator includes: plural core configuration sections each including plural yoke configuration sections that configure a ring shaped yoke and are segmented in a yoke circumferential direction and plural teeth sections that project from the respective yoke configuration sections along a yoke radial direction, with the plural yoke configuration sections and the plural teeth sections integrated together; plural coil wires that are wound onto the respective teeth sections to configure plural winding portions; and plural insulators that each include plural insulator portions that are integrated to each of the respective core configuration sections and insulate between the teeth sections and the winding portions, and a connection portion that connects together the plural insulator portions. | 08-08-2013 |
20130257215 | METHOD FOR STAMPING COIL SIDES OF A STATOR WINDING - Method for stamping multiple coil sides ( | 10-03-2013 |
20130293054 | ELECTRIC MOTOR AND REDUCTION MOTOR - Disclosed is an electric motor including a yoke formed in a bottomed cylindrical shape; permanent magnets arranged on an inner peripheral surface of the yoke; an armature including a rotary shaft journalled on the yoke, an armature core formed with a plurality of teeth and fixed onto the rotary shaft, an armature coil wound around the teeth of the armature core, a commutator having a plurality of segments and being fixed onto the rotary shaft, and a connecting wire connecting two segments arranged to face each other back to back around the rotary shaft, the armature being surrounded by the permanent magnets and accommodated within the yoke; and a first brush, a second brush, and a third brush coming into sliding contact with the segments of the commutator of the armature. | 11-07-2013 |
20130313939 | MOTOR - A motor includes a plate-like insulating member that is interposed between coils located next to each other in the circumferential direction. Elastically deformable small protrusions, which protrude radially inward, are formed at an inner side portion of the insulating member, the inner side portion contacting inner covering portions of the insulators. The small protrusions are formed such that the insulating member is allowed to be inserted between the coils from the axial direction when the small protrusions are elastically deformed and the small protrusions are engaged with axial end faces of the inner covering portions. | 11-28-2013 |
20130313940 | ARMATURE END INSULATOR FOR A POWER TOOL MOTOR - An electric motor is provided including a stator and an armature received within the stator for rotational movement within the stator. The armature includes an armature shaft on which a commutator is mounted, and a lamination stack also mounted on the armature shaft and having radially extending teeth that form slots therebetween. The armature further includes end insulator arranged at an end of the lamination stack, the end insulator having a base portion fitted around the armature shaft and insulating teeth corresponding to the radially extending teeth of the lamination stack. A set of coils are wound in the lamination stack slots and the end insulator slots. In an embodiment, at least a portion of the insulating teeth has a greater thickness than at least a portion of the base portion. In another embodiment, at least one of said insulating teeth has a greater thickness than at least another of said insulating teeth. In yet another embodiment, the end insulator has a uniform thickness of at least 5 mm. | 11-28-2013 |
20140042863 | Brushed Direct Current Motor and Brake System for Vehicle Using The Same - In a brushed direct current motor including a stator that is provided with 2×P magnetic poles (P is odd and greater than or equal to three), an armature core rotatably held with respect to the stator and includes P×N±2 teeth (N is an even and greater than or equal to four) in a circumferential direction, a commutator held so as to integrally rotate with the armature core and includes commutator segments, the number of the commutator segments being the same as that of the teeth, a winding wound around the teeth in a double-wave form, and two anode brushes and two cathode brushes arranged in sliding contact with the commutator, a width angle WB of each of the brushes in sliding contact with the commutator is set so as to satisfy a relation of “WB>WP+WI”. | 02-13-2014 |
20140111054 | Generator and Improved Coil Therefor Having Electrodynamic Properties - The present invention relates to electrical generators and, in particular, to improvements to efficiency in electromechanical energy conversion in electrical generators and electric motors. The regenerative acceleration generator coil according to the present invention takes advantage of the structure of a high impedance multiple-loop salient pole winding or low impedance bi-filar windings to create a positive armature (accelerative) reaction rather than a negative (decelerative) reaction as exhibited by prior art generators which only have low impedance multiple loops of wire making up their rotor armature. The generator of the present invention reverses these negative effects by delaying current flow in the coil until the rotating magnetic field reaches TDC. | 04-24-2014 |
20140210297 | Three-Phase AC Motor - A plurality of coils C | 07-31-2014 |
20140265710 | COIL ARRANGEMENT WITH INTERMEDIARY WIRE TIE-OFF - A coil arrangement for an electric machine comprises a spool including a hub, a first wall positioned on a first side of the hub, and a second wall positioned on a second side of the hub. A length of wire is wound on the hub to form a coil positioned between the first wall and the second wall of the spool. The coil includes a plurality of winding layers including an inner winding layer, an outer winding layer, and at least one intermediate winding layer between the inner winding layer and the outer winding layer. A projection is connected to the spool. The projection includes a first end directly connected to the spool and a second end opposite the first end, the second end is positioned between the first wall and the second wall of the spool. The outer winding layer engages the second end of the projection. | 09-18-2014 |
20140319952 | MAIN MOTOR FOR RAILWAY VEHICLE - The main motor for a railway vehicle is rotationally driven upon receiving an AC power supplied from an inverter circuit that includes a switching element formed by using a wide bandgap semiconductor. The inverter circuit applies a voltage having a PWM waveform to the main motor for a railway vehicle in at least part of a speed range of an electric vehicle. The stator of the main motor for a railway vehicle is configured to include an annular stator core provided with a plurality of slots in a circumferential direction and coils that are wound on the stator core and are accommodated in the slots, and includes a stator winding that is three-phase star-connected and is composed of parallel circuits the number of which is the same as the number of poles for each phase. | 10-30-2014 |
20150028712 | METHOD FOR MANUFACTURING INTERPHASE INSULATING SHEET OF ROTATING ELECTRIC MACHINE, AND ELECTRIC COMPRESSOR - An overlapping portion of an insulating portion formed in an annular shape is held between a workbench having a linear projection and an ultrasonic horn having a circular projection with at least part of the linear projection and of the circular projection opposed to each other and ultrasonically welded. In the ultrasonic welding, even though the ultrasonic horn under ultrasonic vibration rotates on the overlapping portion of the insulating portion, the area in the overlapping portion held between the linear projection and the circular projection with at least part of the linear projection and of the circular projection opposed to each other is not reduced after ultrasonic vibration is applied to the ultrasonic horn. | 01-29-2015 |
20150048709 | Interphase Insulator - Electrically insulating material so foldable as to form an interphase insulator so configured as to be inserted in the slots of the stator or the rotor of an electric machine to prevent separate coils inserted in the same slot to be in direct contact with one another and to prevent the coil heads of different coils to be in direct contact is described herein. The interphase insulator may be so folded that the coil heads are properly insulated from one another. | 02-19-2015 |
20150061449 | THREE-PHASE ELECTROMAGNETIC MOTOR - A three-phase electromagnetic motor includes: a stator that is formed by winding a winding around a magnetic pole formed between slots of a stator core; and a rotor that is disposed inside the stator and has a permanent magnet. The three-phase electromagnetic motor is formed of 8n poles and 6n slots (n is a natural number). 3n windings are wound around every other magnetic pole among a plurality of magnetic poles of the stator core. | 03-05-2015 |
20150076951 | ELECTRIC MACHINE CONSTRUCTION - An electric machine includes a laminated stack. The laminated stack includes first and second additively manufactured conductive phase coils. Each of the first and second additively manufactured phase coils includes of a plurality of conductive strands. An additively manufactured end winding conductively couples the first and second phase coils. The end winding has a non-circular cross-sectional geometry. | 03-19-2015 |
20150123508 | ROTATING MACHINERY - Rotating machinery of the invention includes a 2n-pole rotor, 72n slots, and three-phase armature windings (n≧1). Each of the slots houses a top coil on an inner radius side of the slots and a bottom coil on an outer radius side thereof. Each of the armature windings is formed by connecting the top and bottom coils and has 2n phase belts per phase. Each of the phase belts includes a first parallel winding and a second parallel winding. The top and bottom coils are formed by arranging the first and second parallel windings in a predefined order when a circumferential mean position of all top coils and bottom coils in each of the phase belts is defined as a phase belt center and an arrangement of the first and second parallel windings in at least one phase belt is viewed in an order of proximity to the phase belt center. | 05-07-2015 |
20150311759 | ASYNCHRONOUS MACHINE WITH OPTIMIZED DISTRIBUTION OF ELECTRICAL LOSSES BETWEEN STATOR AND ROTOR - The invention relates to an asynchronous machine ( | 10-29-2015 |
20150326084 | ROTARY ELECTRIC MACHINE - A rotary electric machine is a rotary electric machine including a stator of a distributed winding type including a plurality of first slots, in each of which winding wires of a plurality of same phases or winding wires of one phase are arranged, and a plurality of second slots, in each of which winding wires of a plurality of different phases are arranged. The total number of turns in each of the first slots is same as one another. The total number of turns in each of the second slots is same as one another. The total number of turns in the first slot and the total number of turns in the second slot are different from each other. | 11-12-2015 |
20160105061 | STATOR AND ELECTRIC MOTOR USING SAME - A stator according to the present invention includes: a cylindrical stator core; a plurality of tooth portions provided along a circumferential direction of the stator core; and windings disposed in a plurality of slots provided between the tooth portions and wound around the tooth portions. The windings are configured by materials having different electrical resistivities. A ratio of a sectional area of a material having a high electrical resistivity to a sectional area of a material having a low electrical resistivity in the slot is equal to or larger than 1 and equal to or smaller than a ratio of the electrical resistivity of the material having the high electrical resistivity to the electrical resistivity of the material having the low electrical resistivity. | 04-14-2016 |
20160172949 | SYNCHRONOUS MOTOR | 06-16-2016 |
20170237310 | ROTARY ELECTRIC MACHINE STATOR | 08-17-2017 |
20190149022 | METHOD FOR PRODUCING ARMATURE, METHOD FOR PRODUCING DYNAMO-ELECTRIC MACHINE, ARMATURE, DYNAMO-ELECTRIC MACHINE, AND DEVICE FOR PRODUCING ARMATURE | 05-16-2019 |
20220140685 | ROTATING ELECTRIC MACHINE - An armature winding of multiple phases has a phase winding that is made of a plurality of partial windings for each phase. The partial winding includes a pair of intermediate conductor portions and crossover portions that connect the pair of intermediate conductor portions in an annular shape, and is configured by a conductor material being wound in multiple layers in the pair of intermediate conductor portions and the crossover portions. The intermediate conductor portions of the phases are arrayed in a predetermined order in the circumferential direction by one of the intermediate conductor portions of the pair of intermediate conductor portions of the partial winding of another phase being arranged between the pair of intermediate conductor portions of the partial winding. A sheet-shaped insulation covering body is provided in the intermediate conductor portion in a portion that opposes the intermediate conductor portion of the partial winding of another phase. | 05-05-2022 |