Class / Patent application number | Description | Number of patent applications / Date published |
310044000 | Powdered metal | 66 |
20080211326 | Inner rotor type permanent magnet excited transverse flux motor - Disclosed herein is an inner rotor type permanent magnet excited transverse flux motor, in which a laminated structure in an axial direction or in a radial shape is applied to a stator iron core so as to employ a small amount of permanent magnets compared with a conventional outer rotor type permanent magnet excited transverse flux motor, thus providing high output power, increasing the efficiency of power generation, and reducing noise and vibration. | 09-04-2008 |
20080218007 | Rotor for Motor and Method for Producing the Same - A surface magnet type rotor and an inner magnet type rotor having good motor characteristics in which bonding strength is high between a magnet section and a soft magnetic yoke section, and structural reliability is high even in high speed use, and its producing method. The rotor comprises an anisotropic bond magnet section and a soft magnetic section wherein the anisotropic bond magnet section is preformed in magnetic field and then formed to be integrated with the soft magnetic section in nonmagnetic field. Subsequently, it is heat hardened to produce a surface magnet type rotor. Magnet units, each having a magnetic pole composed by bonding a pair of permanent magnets such that the directions of magnetization become symmetric with respect to the bonding surface, are linked such that magnetic poles of different polarities appear alternately on the magnetic action surface thus forming an anisotropic magnet body. Good motor characteristics can be attained by setting an angle to 5-40° between the direction of magnetization of the permanent magnet and a diametral direction passing the bonding surface. | 09-11-2008 |
20090021088 | Method for manufacturing of magnet poles - A method for manufacturing sintered magnet poles is described. A vitrifiable base material powder is filled into a mould, the mould is closed with a plate, the mould with the powder is placed in a magnetic field for aligning the powder, the plate is pressed such onto the powder as to establish a compact that holds the alignment in place, and the compact is sintered so as to form a sintered magnet pole. The mould ultimately forms a protective cover of the sintered magnet pole and the plate ultimately forms a base plate of a magnet pole piece. Furthermore, a magnet pole piece is provided which has a magnet pole and a base plate which is fixed to a protective cover so that the base plate and the protective cover surround the magnet pole. The base plate and/or the protective cover of the magnet pole piece has at least one element that provides a geometrical locking of the magnet pole to the base plate and/or the protective cover. | 01-22-2009 |
20090066171 | METHOD FOR MANUFACTURING ARMATURE CORE AND ARMATURE - An armature includes an armature core, a rotary shaft inserted into a shaft fixing hole of the armature core, and coils each wound about one of teeth of the armature core. The teeth extend radially. The armature core includes an inner core having the shaft fixing hole, and an outer core that is provided about and is integrated with the inner core. The inner core is formed by laminating a plurality of magnetic steel plates. The outer core is formed by compression molding magnetic powder, and includes the teeth. Accordingly, the armature core has a high mechanical strength and is capable of obtaining a high magnetic flux density. Also, the armature core is easy to manufacture. | 03-12-2009 |
20090085416 | YOKE-INTEGRATED BONDED MAGNET AND MAGNET ROTATOR FOR MOTOR USING THE SAME - This invention provides a soft magnetic yoke-integrated bonded magnet in which a soft magnetic yoke has been integrally compression molded in such a state that the soft magnetic yoke is engaged in a joined face formed by bringing a binding material-containing magnetic powder into contact with a binding material-containing soft magnetic powder. The soft magnetic yoke part and the bonded magnetic part are constructed so that, when the soft magnetic yoke part and the bonded magnet part are compression molded separately from each other, the spring back level is identical upon the release of the compression force. | 04-02-2009 |
20090121560 | Borealis Technical Limited - The present invention provides a method for building a component for an electrical rotating machine and comprises: providing powdered magnetic material; providing electrically conductive material; positioning the powdered magnetic material and the electrically conductive material within a mold functional to provide the materials with the required dimensions after application of a hot isostatic pressing (HIP) procedure; and applying at least one HIP procedure to the materials in the mold. Temperatures and pressures of the process are chosen to ensure that the electrically conducting and magnetic portions of the component are bonded without the materials seeping into each other. In one aspect the present invention thus provides a method for building small compact motor systems using motor components formed from pressed powder. A technical advantage of this approach is that the component has uniform grain structure and thus consistent magnetic and structural properties. The motor may be located inside a vehicle drive wheel, as it is equipped to be a drive motor providing the necessary torque with reasonable system mass. The motor systems of the invention may utilize polyphase electric motors, and are preferably connected to appropriate drive systems via mesh connections, to provide variable V/Hz ratios. | 05-14-2009 |
20090127942 | CONCENTRATED WINDING MACHINE WITH MAGNETIC SLOT WEDGES - Methods and apparatus are provided for improving operational characteristics of a concentrated winding machine. According to an example embodiment, an apparatus comprises stator teeth having distal ends, the stator teeth arranged in an annular fashion about an axis to define stator slots between adjacent teeth and slot openings between the distal ends of the adjacent teeth, the stator teeth structured to prevent relative movement between adjacent teeth. The apparatus further comprises magnetic wedges structured to be inserted between the distal ends of the adjacent teeth to close the slot openings. | 05-21-2009 |
20090189466 | MOTOR SYSTEM FOR A VEHICLE FUEL PUMP - A rotor for a brushless motor is resistant to degradation in alternative fuels and has desirable magnetic properties. A stator for a brushless DC motor includes coils wound both clockwise and counterclockwise around teeth of a back iron. Pairs of the coils are electrically connected in parallel. | 07-30-2009 |
20090195090 | High-Efficiency Wheel-Motor Utilizing Molded Magnetic Flux Channels With Transverse-Flux - A motor including a mounting shaft having a hollow channel and a bearing attached to each end, a cylindrical hub having a hollow core for the mounting shaft, and plural rows of plural Molded Magnetic Flux Channels with a hollow core and a channel forming a U-shaped recess and mounted the surface of the hub, each row corresponding to a motor phase. Each magnetic flux channel forms two pole pieces divided by the channel. The motor also includes plural phase windings, one passing through each row of plural Molded Magnetic Flux Channels, a rotating drum having plural rows of permanent magnets on an inner surface, each row pair corresponding to and aligned with one of the plural rows of Molded Magnetic Flux Channels. The rotating drum connected with the bearing, and drive electronics for driving the plural phase windings, wherein the plural Molded Magnetic Flux Channels increases torque and motor efficiency. | 08-06-2009 |
20090236919 | Stator Assembly for Electric Machines - A stator assembly is provided with detachable teeth that are made of magnetic powder material. The teeth are so configured and sized as to be interconnected to a core body of the stator with pre-formed coils that are positioned between adjacent teeth. | 09-24-2009 |
20090243406 | Electric Machine Assembly - An electrical rotary machine is provided comprising a first stator core section being substantially circular and including a plurality of teeth, a second stator core section being substantially circular and including a plurality of teeth, a coil arranged between the first and second circular stator core sections, and a rotor including a plurality of permanent magnets. The first stator core section, the second stator core section, the coil and the rotor are encircling a common geometric axis, and the plurality of teeth of the first stator core section and the second stator core section are arranged to protrude towards the rotor. Additionally, the teeth of the second stator core section are circumferentially displaced in relation to the teeth of the first stator core section, and the permanent magnets in the rotor are separated in the circumferential direction from each other by axially extending pole sections made from soft magnetic material. | 10-01-2009 |
20090256430 | Manufacture of electric motor component - The modular conical stator pole provides an improved conical stator assembly on electrical machines. The improved conical stator pole assembly comprises a plurality of stator poles, each pole comprising an assembly having a coil secured on a soft magnetic composites (SMC) stator pole tooth by inserting a winding support through the open core of the coil and attaching a back iron and a stator face to either end of the winding support. Each stator pole having a parallelogram shaped cross section for forming a conical shaped rotor space when the stator poles are assembled having the back irons bearing against each other to space the coils apart and form a conical shaped outside profile of the stator pole assembly. The conical stator having a small end and a big end. The tooth comprising a winding support integrally molded with either the back iron or the face. | 10-15-2009 |
20090273245 | STATOR AND MOTOR - A stator core is formed by arranging divided cores ( | 11-05-2009 |
20100019587 | RADIAL ANISOTROPIC SINTERED MAGNET AND ITS PRODUCTION METHOD, MAGNET ROTOR USING SINTERED MAGNET, AND MOTOR USING MAGNET ROTOR - A radial anisotropic sintered magnet formed into a cylindrical shape includes a portion oriented in directions tilted at an angle of 30° or more from radial directions, the portion being contained in the magnet at a volume ratio in a range of 2% or more and 50% or less, and a portion oriented in radial directions or in directions tilted at an angle less than 30° from radial directions, the portion being the rest of the total volume of the magnet. The radial anisotropic sintered magnet has excellent magnet characteristics without occurrence of cracks in the steps of sintering and cooling for aging, even if the magnet has a shape of a small ratio between an inner diameter and an outer diameter. | 01-28-2010 |
20100045120 | MAGNETIC POWDER, DUST CORE, MOTOR, AND REACTOR - According to the present invention, a magnetic powder for a dust core, which is excellent in terms of insulation properties without causing a decrease in the dust core magnetic flux density, a dust core comprising the magnetic powder, and a motor or a reactor having a core composed of the dust core are provided. Therefore, a magnetic powder | 02-25-2010 |
20100079015 | DUST CORE, METHOD FOR PRODUCING THE SAME, ELECTRIC MOTOR, AND REACTOR - According to the present invention, a dust core having excellent insulating properties, high strength, and high density (high magnetic flux density), a method for producing the same, and an electric motor or reactor having a core member composed of the dust core are provided. Therefore, a method for producing a dust core is provided, such method comprising the following steps: a 1 | 04-01-2010 |
20100141059 | CAPACITOR MOTOR AND PROCESS FOR PRODUCING THE SAME - A capacitor motor is formed of a stator including a stator iron core and windings, and a rotor including a rotor iron core. The stator iron core is divided into a plurality of first divided iron-core units having tooth sections and a second divided iron-core unit forming a magnetic path of the first divided iron-core units. The windings are mounted to the tooth sections and accommodated in a plurality of slots formed by the first iron-core units and the second one. The first divided iron-core units are formed by punching electromagnetic steel plates and layering the plates punched out. The second divided iron-core unit is formed by molding magnetic powder into a given shape. The first divided iron-core units and the second one are jointed together by a given means such that the tooth sections can be arranged radially on outer wall of the rotor iron core. | 06-10-2010 |
20100156204 | Stator core, motor using the stator core, and method of manufacturing the stator core - A stator core includes a pressurized powder core section which is produced by compression-molding a magnetic powder covered by an insulation coating. At least a portion of the pressurized powder core section forms at least a part of a winding slot section around which a winding is wrapped. The pressurized powder core section comprises a winding guide groove which prevents the winding from deviating along the extending direction of the winding slot section. As a result, a space factor of the winding can be increased, to thereby further improve motor output. | 06-24-2010 |
20100253161 | STATOR AND ROTATING ELECTRIC MACHINE EMPLOYING THE SAME - A stator in which coil conductors of three phases are disposed in a plurality of slots provided in a stator core, wherein the coil conductors are formed by connecting a plurality of slot conductor portions disposed in the slot, a plurality of coil end conductor portions extending in a circumferential direction of the stator core on an outer side of an axial end surface of the stator core, and a plurality of upstanding conductor portions, each of which connects the coil end conductor portion and the slot conductor portion. | 10-07-2010 |
20100327674 | WHEEL MOTOR - A wheel motor can include a stator adapted to be coupled to a vehicle. The stator can include a body portion and a core extending radially outward from the body portion. A rotor can be disposed about the stator and can have a portion positioned radially outboard of and around the stator core. The rotor can include a plurality of magnets aligned with the stator core, and can be adapted to be coupled to a rotatable vehicle component. At least one winding element can be disposed circumferentially around the stator core, and a controller can be positioned in a pocket integrally formed in the stator body portion. The controller can be coupled to the at least one winding element and can be arranged to selectively provide a current supply to the at least one winding element to generate a magnetic flux to rotate the rotor relative to the stator. | 12-30-2010 |
20110025140 | PERMANENT MAGNET ROTOR WITH FLUX CONCENTRATING POLE PIECES - A permanent magnet machine is provided comprising a stator and a rotor, the rotor being adapted to rotate relative to the stator, the rotor comprising a plurality of permanent magnets separated in the circumferential direction from each other by axially extending rotor pole pieces for concentrating the magnetic flux from the permanent magnets, the stator having a structure that defines axial limits of an air gap between the stator and the rotor for communicating magnetic flux between the stator and the rotor, wherein that at least some of the permanent magnets extend axially outside the axial limits of the air gap as defined by the stator structure. | 02-03-2011 |
20110025141 | STATOR COMPACTED IN ONE PIECE - A compaction tool is provided for compacting an element from metal powder where the element has uniform axially displaced protrusions, and the tool comprises a die and a top and a bottom punch with punch surfaces. The top and bottom punch comprises displaceable opposing punch surfaces for displacing the metal powder there between before compacting the element. Additionally provided are a method for compacting an element from metal powder and an element made from such a method. | 02-03-2011 |
20110037329 | INTEGRATED ROTOR POLE PIECES - A pole piece structure is provided to be used as part of an active rotor structure for an electrical rotary machine, wherein the active rotor structure is circular comprising pole pieces and permanent magnets magnetised in the circumferential direction of the rotor structure, wherein the rotor pole piece structure is a single structure with at least two individually spaced pole pieces connected by an integration bridge. Further provided is a method of manufacturing a rotor pole piece structure and a rotor for an electrical machine with a rotor pole piece structure. The assembly of magnets to the pole pieces is significantly enhanced using these rotor pole piece structures as described. | 02-17-2011 |
20110074231 | Hybrid and electic vehicles magetic field and electro magnetic field interactice systems - A magnetic field interactive material being part of a machine component or mechanism utilizing magnetic or electro-magnetic field forces in said components operation and comprising specifically located magnetic particles incorporated into a non homogeneous amalgamation within the matrix or structural matrix of primarily a metal material differing from that of the magnetic particles therein forming an integrated component possessing magnetic field interactive capabilities, allowing such magnetic field interactive components to have a wide array of uses one of which is associated with Hybrid and Electric Vehicles. | 03-31-2011 |
20110089774 | TRANSVERSE FLUX MOTOR WITH INTEGRAL COOLING - A transverse flux, switched reluctance motor includes a stator, a rotor mounted for rotation relative to the stator about an axis, and a plurality of phased coils. The stator and rotor are spaced apart from each other by a gap and a first phased coil is positioned to extend at least partially across the gap. | 04-21-2011 |
20110095628 | AXIAL GAP MOTOR, COMPRESSOR, MOTOR SYSTEM, AND POWER GENERATOR - The present invention provides a low-iron-loss (high-efficiency) and low-cost axial gap motor that includes a high-quality soft magnetic material placed at an appropriate position, reduces torque pulsation, keeps induced voltage in the shape of a sine wave, and increases the degree of freedom in design. The axial gap motor includes a stator having stator teeth; and a rotor being opposed to the stator with a gap in an axial direction of the stator. Each of the stator teeth includes a stator tooth body, a stator tooth end joined to at least one axial-direction end of the stator tooth body, and a stator coil disposed around the stator tooth body. The stator tooth body includes a wound core comprised of a multi-layered amorphous foil strip winding. The stator tooth end is formed by a compact made of a powder magnetic core, and includes an opposed surface to the rotor. A cross-sectional area of the stator tooth end perpendicular to an axis of the amorphous foil strip winding is larger than a cross-sectional area of the stator tooth body perpendicular to the axis of the amorphous foil strip winding. | 04-28-2011 |
20110241455 | Magnetic Shield for Stator Core End Structures of Electric Rotating Machine - In an electric rotating machine, for reducing losses that occur in clamping plates and their shield, the electric rotating machine includes a rotor formed with field winding wound around a rotor core, a stator placed opposite to the rotor at a predetermined space and formed with stator winding wound around a stator core formed by stacking multiple magnetic steel sheets in the axial direction, clamping plates clamping and retaining the stator core from both axial end parts thereof in the stacking direction of the magnetic steel sheets, and a magnetic shield placed around the clamping plates to shield flux leakage flowing into the clamping plates, and the magnetic shield is formed of a cylinder of stacked steel sheets stacked in a form of a cylinder about the rotor shaft and powder magnetic core segments and powder magnetic core segments having portions which are stuck to the cylinder of stacked steel sheets on the stacking cross section, and arranged to cover side surfaces and an inner surface of radial direction of the clamping plates. | 10-06-2011 |
20110273033 | ROTARY ELECTRIC MACHINE - A rotary electric machine having a stator whose dismantled structure can be reintegrated at reduced cost. The stator eliminates difficulties in separation and reuse at the time of disposal incident to use of molding such as resin molding. Also, it has no adverse environmental impacts. | 11-10-2011 |
20110273034 | AXIAL GAP MOTOR - A magnet pole portion | 11-10-2011 |
20110278965 | Stator core and spindle motor having the same - There is provided a stator core including a core back having an opening such that the core back is fixed to a stationary member by being pressed and fitted thereto; and a plurality of teeth portions being protruded from the core back in a radial direction, each teeth portion including a winding recess around which a coil is wound, wherein the core back and the teeth portions are formed by a sintering process. Since the coil is wound around the winding recess, the height of the wound coil can be reduced. | 11-17-2011 |
20110278966 | Motor With Overmolded Permanent Magnets - A permanent magnet electric motor has a stator and a rotor. The stator has a stator housing with at least a North pole and a South pole. Each pole includes at least two permanent magnets arranged on an inner surface of the stator housing near the pole tips and an overmold of magnetic material molded around the permanent magnets and over the inner surface of the stator between the permanent magnets. Alternatively, an overmold of magnetic material may be provided over an inner surface of the stator, where the thickness of the overmold layer is greater near tips of each pole than in the middle portion of each pole. | 11-17-2011 |
20110309694 | ELECTRIC MACHINE- FLUX - An electric machine ( | 12-22-2011 |
20120091832 | MATRIX MATERIAL COMPRISING MAGNETIC PARTICLES FOR USE IN HYBRID AND ELECTRIC VEHICLES - A magnetic field interactive material being part of a machine component or mechanism utilizing magnetic or electro-magnetic field forces in said components operation and comprising specifically located magnetic particles incorporated into a non homogeneous amalgamation within the matrix or structural matrix of primarily a metal material differing from that of the magnetic particles therein forming an integrated component possessing magnetic field interactive capabilities, allowing such magnetic field interactive components to have a wide array of uses one of which is associated with Hybrid and Electric Vehicles. | 04-19-2012 |
20120104880 | AXIAL MOTOR - An axial motor includes a rotor arranged between a pair of stators with coils. In the rotor, a plurality of permanent magnets sandwiched between pairs of first magnetic materials and a plurality of second magnetic materials are alternately arranged in a rotation direction while gaps are provided therebetween. Since the permanent magnets are sandwiched by the first magnetic materials in the thus constructed axial motor, a field-weakening control can be performed. Since the second magnetic materials are provided, a reluctance torque can be generated. Further, since the gaps are provided, more magnetic fluxes generated from the permanent magnets can be caused to flow toward the coils. Therefore, the thus constructed axial motor can achieve a higher output, higher torque, higher efficiency, and miniaturization. | 05-03-2012 |
20120119599 | TRANSVERSE AND/OR COMMUTATED FLUX SYSTEMS HAVING LAMINATED AND POWDERED METAL PORTIONS - Electrical machines, for example transverse flux machines and/or commutated flux machines, may be configured to achieve increased efficiency, increased output torque, and/or reduced operating losses via use of laminated materials in connection with powdered metal materials. For example, stacks of laminated materials may be coupled to powdered metal teeth to form portions of a stator in an electrical machine. | 05-17-2012 |
20120248901 | SQUIRREL-CAGE ROTOR AND PRODUCTION METHOD THEREOF - A squirrel-cage rotor and a production method thereof, the rotor having conductors with sufficient strength. In the invention, conductor particles are sprayed onto a core and/or conductive bars in a solid-state. As a result, in the coating material, the enlargement of the crystal grain of the conductors is significantly restricted, whereby conductive end rings are connected to the core and/or the conductive bars. Since conductor particles do not melt, a gap formed by thermal contraction when the conductor melts between different kinds of members is prevented from being formed. Therefore, the deterioration of the conductor may be limited, and the conductor may have sufficient strength. The reliability of the rotor is improved. | 10-04-2012 |
20130020887 | MOTOR AND RECORDING DISK DRIVING DEVICE INCLUDING THE SAME - There is provided a spindle motor capable of having improved coupling strength between components by adhering the components to each other using an adhesive containing a metal powder. The spindle motor includes: a shaft; and a rotor case fixedly mounted to the shaft to thereby rotate together therewith, wherein an adhesive containing a metal powder is interposed in a portion at which the rotor case is fixedly mounted to the shaft. | 01-24-2013 |
20130026863 | METHOD OF MANUFACTURING ANISOTROPIC BONDED MAGNET AND MOTOR USING THE SAME MAGNET - A method of manufacturing anisotropic bonded magnets includes four steps. The first step fills a compressing metal mold with a compound chiefly made of flaky anisotropic magnetic particles. The second step forms a compression molded substance by molding the compound in the metal mold within an orientation magnetic field. The third step couples the compressing metal mold to a molding metal mold together. The fourth step moves the compression molded substance from the compressing metal mold to the molding metal mold, and then deforms and molds the compression molded substance into a given shape. This method allows controlling the anisotropy of the anisotropic bonded magnet. | 01-31-2013 |
20130147287 | CORE FORMED FROM POWDER AND MOTOR FOR VEHICLE USING THE SAME - A core formed from powder, such as a stator core for use in a motor for a vehicle, wherein the core is formed from metallic powder and includes an outer part disposed at an outside of the motor, an inner part disposed at an inside of the motor, and a winding part which connects the outer part and the inner part and on which a wire is wound, and to a motor for a vehicle using the same. The winding part is formed to have rounded corners and a height lower than the height of the inner part, and a connection part is obliquely formed between the winding part and the inner part so that the winding part and the inner part are naturally connected. | 06-13-2013 |
20130147288 | Electrical Rotary Machine Assembly With Stator Core Sections - An electrical, rotary machine may include a first stator core section being substantially circular and including a plurality of teeth, a second stator core section being substantially circular and including a plurality of teeth, a coil arranged between the first and second circular stator core sections, and a rotor including a plurality of permanent magnets. The first stator core section, the second stator core section, the coil and the rotor are encircling a common geometric axis, and the plurality of teeth of the first stator core section and the second stator core section are arranged to protrude towards the rotor. Additionally the teeth of the second stator core section are circumferentially displaced in relation to the teeth of the first stator core section, and the permanent magnets in the rotor are separated in the circumferential direction from each other by axially extending pole sections made from soft magnetic material. | 06-13-2013 |
20130162064 | LAMINATED CORE AND METHOD FOR MANUFACTURING THE SAME - Disclosed herein is a laminated core used for a motor such as an electric motor, including: a unit laminate laminated in at least one layer and formed of a soft magnetic composite, wherein each powder particle forming the soft magnetic composite is insulation-coated. The preferred embodiments of the present invention can improve the mechanical strength of the core of the soft magnetic composite by manufacturing the core using the laminating method of the soft magnetic composite and reduce core loss by performing insulation coating on powder particles forming the soft magnetic composite. | 06-27-2013 |
20130181551 | PERMANENT MAGNET ROTOR WITH FLUX CONCENTRATING POLE PIECES - A permanent magnet machine is provided including a stator and a rotor, the rotor being adapted to rotate relative to the stator, the rotor including a plurality of permanent magnets separated in the circumferential direction from each other by radially extending rotor pole pieces for concentrating the magnetic flux from the permanent magnets, the stator having a structure that defines radial limits of an air gap between the stator and the rotor for communicating magnetic flux between the stator and the rotor, wherein at least some of the permanent magnets extend radially outside the radial limits of the air gap as defined by the stator structure. | 07-18-2013 |
20130187488 | ROTATING ELECTRICAL MACHINE - In a rotating electrical machine of axial-gap type in which a stator and a rotor are opposed to each other in arrangement and winding axis is parallel with a rotating shaft direction, the stator has an “m” protruding in the rotating shaft direction are distributed along a circumferential direction thereof, in which the winding pole is formed of a magnetic member having a plurality of teeth in a circular-arc shape in a diameter direction, and wherein the rotor is formed of a magnetic member having a plurality of teeth in a circular-arc shape in a diameter direction, and the number of the teeth of the stator and the rotor are arranged in a manner opposite to each other through air gap so as to be engaged with each other. The stator and the rotor are opposed on both sides of the rotor and the stator. | 07-25-2013 |
20130221771 | HYBRID EXCITATION ROTATING ELECTRICAL MACHINE - A hybrid excitation machine comprising a rotor having first and second rotor cores with a gap between in an axial direction, wherein first magnetic poles excited by a permanent magnet and second magnetic poles not excited by the permanent magnet are alternately arranged in a circumferential direction in each rotor core. The first magnetic poles of the first and second rotor cores have different polarities, and the first magnetic poles of one rotor, core face the second magnetic poles of the other rotor core in the axial direction. A stator generating a magnetic field rotating the motor is placed radially outward of the rotor and an exciting coil exciting the second magnetic poles is placed in the gap, wherein the stator has, in the axial direction, first stator cores on both sides and a second stator core having lower magnetic resistance than the first stator core, in a center. | 08-29-2013 |
20130234540 | DC BRUSHLESS MOTOR AND METHOD FOR CONTROLLING THE SAME - This DC brushless motor ( | 09-12-2013 |
20130257186 | Flexible Magnet Directional Stiffening Methods - Magnets and methods of their manufacture are disclosed for use in flywheel assemblies, such that the magnets comprise oriented fibers, such as, for example, axially-oriented fibers in a flexible rotor magnet composition to predictably allow the magnet to expand dimensionally upon rotation only in a predetermined and predictable fashion while maintaining critical contact with a rotor surface. | 10-03-2013 |
20130264894 | AMORPHOUS MAGNETIC COMPONENT, ELECTRIC MOTOR USING SAME AND METHOD FOR MANUFACTURING SAME - An amorphous magnetic component for use in a high-power, high-speed electric motor, in which amorphous metal materials are powdered, compressed, and molded, to be easily molded into magnetic components of a complex shape, and crystalline metal powder of excellent soft magnetic properties is added to the amorphous alloy powder, to promote improvement of a magnetic permeability and improvement of a packing density at the time of compression molding. A method of manufacturing the amorphous magnetic component; includes the steps of: pulverizing ribbons or strips of amorphous alloys to obtain plate-shaped amorphous alloy powder; classifying the amorphous alloy powder, and mixing the amorphous alloy powder with spherical soft magnetic powder, in order to improve magnetic permeability and packing density, to obtain mixed powder; mixing the mixed powder with a binder, to be molded into a shape of the magnetic components; and sintering the molded magnetic components to implement magnetic properties. | 10-10-2013 |
20130285483 | AXIAL FLUX PERMANENT MAGNET MOTOR - Disclosed herein is an axial flux permanent magnet (AFPM) motor including: a stator including a stator core, a magnet wire wound around the stator core, a shaft, and a stator core supporting member fixedly supporting the stator core to the shaft; and a rotor including a rotor case having a space part formed therein so as to receive the stator core therein, a magnet fixedly coupled to an inner side portion of the rotor case so as to face the stator core, and a bearing rotatably supporting the rotor case to the shaft. | 10-31-2013 |
20130293037 | ROTATING ELECTRIC MACHINE - The disclosed is a rotating electric machine, comprising a magnetic iron stator and a surface permanent magnet type rotor, wherein a wire-winding axis and a rotating axial core of the stator cross each other orthogonally, and inner diameter portion of the stator is provided with an iron core having m wire-winding salient-poles arrayed circumferentially, and becomes gradually smaller from one side to another side in its axial direction, wherein the rotor has n poles with an arrangement that north poles and south poles are arrayed alternately in its circumferential direction, peripheral portion of the rotor becomes gradually smaller from one side to another side in its axial direction, and the stator and the rotor are engaged rotatably via a tapered air gap, wherein m is a positive integer of two or more, and n is a positive even number. | 11-07-2013 |
20130293038 | BONDED MAGNET AND MOTOR PROVIDED WITH SAME - A bonded magnet of the present invention has a configuration that it contains at least a magnetic powder and a binder, and in which the magnetic powder and the binder are mixed such that a content of the magnetic powder is 98 mass % or more and a content of the binder is more than 0 mass % and 2 mass % or less. Accordingly, a bonded magnet having good magnetic characteristics and high heat resistance can be attained. | 11-07-2013 |
20130313922 | AMORPHOUS STATOR, AND ELECTRIC MOTOR USING SAME - Provided is an amorphous stator for use in a high-power, high-speed electric motor, and an electric motor using the amorphous stator, in which amorphous alloy powder is compressed and molded into a number of unit split cores, to then be assembled with bobbins, and to thus be easily molded into a core of a complex shape, and a core loss is minimized by using the amorphous alloy powder, to thus promote improvement of an efficiency of the motor. The electric motor includes: a stator in which a coil is wound on bobbins respectively formed in a number of unit split cores, and the number of unit split cores are assembled in an annular form by an integral or split bobbin; and a rotor that is rotated by an interaction with the stator, wherein the unit split cores are molded with mixed powder made of plate-shaped amorphous alloy powder and spherical soft magnetic powder. | 11-28-2013 |
20140001891 | PERMANENT MAGNET MOTOR | 01-02-2014 |
20140070634 | CONTAINMENT BAND FOR PERMANENT MAGNET GENERATOR - A rotor has a rotor body for rotation about a shaft. A plurality of permanent magnets are spaced circumferentially about the rotor body. A containment band is positioned radially outwardly of the permanent magnets. The containment band has a containment band coefficient of thermal expansion. The permanent magnets have a permanent magnet coefficient of thermal expansion, taken parallel to a magnetic alignment. A ratio of the containment band coefficient of thermal expansion to the permanent magnet coefficient of thermal expansion is less than or equal to 1.15. | 03-13-2014 |
20140117790 | ROTATING ELECTRICAL MACHINE - An electrical machine having high torque and reliability and low cost, has a stator and rotor facing each other via an air gap, and a bracket at each of both shaft-direction end surfaces of the stator and rotor. The stator core is formed of a dust core, and a stator side guide portion projecting in the shaft direction concentrically with an inner peripheral portion of the stator, is provided on each of both side surface portions of the stator core, a bracket side guide portion, which is fitted to the stator side guide portion, is provided at each of the brackets, and the air gap is secured by making the stator side guide portion fitted to the bracket side guide portion. | 05-01-2014 |
20140125154 | POLY GAP TRANSVERSE FLUX MACHINE - The present invention relates to an improved electric machine which, when operating in motor mode, produces rotational torque without using alternating magnetic polarity, but rather magnetic flux that utilizes coils arranged in a dipolar manner around an axial plane and independently removable stators. | 05-08-2014 |
20140217836 | ARRANGEMENT HAVING AT LEAST ONE ELECTRICAL WINDING AND ELECTRIC MACHINE WITH THIS ARRANGEMENT - An arrangement has at least one electrical winding having a one-part or multi-part component produced from a soft-magnetic powder composite material, which component conducts an electromagnetic flow of the winding, at least in certain regions, and has a recess provided in the region of this flow conduction, and having a one-part or multi-part, particularly metallic connector part, which has a greater mechanical strength and/or electrical conductivity and/or thermal conductivity as compared to the component, and projects into the recess of the component. In order to achieve particular thermal, mechanical and/or electrical properties, the recess penetrates the component in the region of its flow conduction, and the connector part that projects through this recess forms a mechanical, electrical and/or thermal bridge that bridges the component. | 08-07-2014 |
20150015092 | Electric Machine - An electric machine, especially a transversal flux machine, the stator being composed of a stack of phase segments, each phase segment having at least one stator segment and one stator winding, especially a single winding, each stator segment having an annular stator bridge, on which pole shoes are premolded, which in particular extend radially inward, and/or which extend in the direction of the rotor and/or which are situated between the rotor and the annular stator bridge, the pole shoes having the same shape, in particular, the axial width of the pole shoe decreasing with increasing radial clearance, the associated profile being disposed between a first and a second profile, the first profile being a linear function of the radial clearance, the pole back associated with the first profile being a planar area, in particular, the second profile being a circular function, in particular a circular segment function, the pole back associated with the second profile being a cylindrical section area, in particular. | 01-15-2015 |
20150015093 | Rotor and Reluctance Motor - A rotor for an electrical machine, in particular synchronous reluctance machine, is provided. The rotor is formed as a cylindrical structure having a magnetically soft element formed with an even number of salient magnetic poles openings for forming magnetic flux barriers. The openings are at least partially filled with a diamagnetic and/or paramagnetic medium and the diamagnetic and/or paramagnetic medium may axially and tangentially fix the magnetically soft element relative to the rotor. A method for producing such a rotor and apparatus using the rotor, including a reluctance motor, in particular a synchronous reluctance motor, that uses the rotor are provided. | 01-15-2015 |
20150048696 | DISC ROTOR MOTOR - A disc rotor motor is demonstrated, having at least one stator that has at least one electrical stator winding and stator teeth, which have a tooth neck composed of a soft magnetic powder composite, and having at least one disc-shaped rotor, which has permanent magnetic poles composed exclusively of ferrite magnets at least for producing torque, with the rotor and stator oriented parallel to each other and spaced apart from each other by an axial gap. In order to find an optimum between costs, weight, and overall size as well as power and torque density, the invention proposes that the stator teeth each end in a tooth end that adjoins their tooth neck and is composed of a soft magnetic powdered composite, which tooth end widens out in its cross-sectional area in comparison to the tooth neck. | 02-19-2015 |
20150054360 | MOTOR ROTOR SUPPORT AND METHOD FOR MANUFACTURING SAME - An object of the present invention is to provide a motor rotor support suitable for an axial gap motor and a method for manufacturing the same. The motor rotor support for supporting a magnetic body disposed on a rotor of the motor is configured by laminating single materials each formed from a hot-worked material or a cold-worked material preferably composed of an 18Mn-18Cr nonmagnetic steel. | 02-26-2015 |
20150091397 | SPINTRONIC GENERATOR - A spintronic generator that provides electrical power with the motive force of natural electron spin. The utilization of natural electron spin can be enhanced with carefully matched materials, weights, and magnetic waveforms which provide precise pulsed frequencies in resonance with the materials. This resonance of the magnetic pulses provides clean abundant power. A utilization of the Zero Point Energy results in a local environment temperature drop which can be one of the sources of motive force. The harvesting of electricity can be in standard induction pick up coils controlled by direct current motor controllers using an LRC tank circuit. | 04-02-2015 |
20160056671 | FLUX SWITCHING MODULATED POLE MACHINE - A stator for a flux switching modulated pole machine, the stator including a stator core, a coil, and at least two permanent magnets, the stator core including at least four coaxial annular stator core members, each including a respective set of radially protruding teeth, the teeth of each annular stator core member being distributed along a circumferential direction, wherein the annular stator core members are axially displaced relative to each other, and wherein the teeth of each annular stator core member are circumferentially displaced relative to the teeth of each adjacent annular stator core member; wherein the coil is arranged coaxial with the annular stator core members and axially sandwiched between two of the sets of teeth; and wherein the permanent magnets are axially magnetized and axially sandwiched between two of the annular stator core members. | 02-25-2016 |
20160079821 | ROTOR OF AN ELECTRIC MACHINE HAVING A SQUIRREL CAGE PRODUCED FROM A GRANULATE - A rotor has a rotor core which is made of a core material and has grooves which extend substantially in a direction of a rotor axis. The rotor core has at each axial end of the grooves an annular recess which is disposed concentrically with respect to the rotor axis and connects the grooves. The rotor core has a diffusion layer which has a diffusion material and which at least partially covers at least the respective surface of the grooves and/or the annular recess. A granulate of an electrically conductive material is introduced into the grooves and/or the annular recess and, while heat being supplied and while pressure being exerted, is connected by cohesive bonding to the rotor core. | 03-17-2016 |
20160086702 | PERMANENT MAGNET, MOTOR, AND GENERATOR - The embodiments provide a high-performance permanent magnet. The permanent magnet includes a sintered body having a composition expressed by a composition formula R | 03-24-2016 |
20160172917 | CORE FORMED FROM POWDER AND MOTOR FOR VEHICLE USING THE SAME | 06-16-2016 |
20160190874 | SINGLE STATOR AND MOTOR COMPRISING SAME - A single stator includes: a stator core; a bobbin wrapped on an outer circumferential surface of the stator core; and a coil wound on an outer circumferential surface of the bobbin. The stator core comprises: a plurality of integration type core portions that are integrally formed by metal powders, and on which a coil is wound; and a lamination type core portion that is formed in an annular shape by laminating a plurality of iron pieces, and that has at least one press-fit groove is formed in which each of the plurality of integration type core portions is press-fitted into and combined with the at least one press-fit groove. | 06-30-2016 |