Entries |
Document | Title | Date |
20080246359 | Motor and drum washing machine having the same - Disclosed are a motor and a drum washing machine having the same. The motor includes external stators and internal stators, which are respectively disposed in a ring shape and are separated from each other in a radial direction, and rotors, which are disposed in a ring shape and are rotatably installed between the external stators and the internal stators such that the rotors are rotated due to interaction with the external stators and the internal stators, thus being capable of generating a high rotary force while maintaining a uniform length in an axial direction. | 10-09-2008 |
20080252164 | Variable speed motor - Shift gears of a variable speed motor is no longer needed for a set of gears, but multiple layers disks with magnets fit over an axle rotated by a multiple layers annular opening of a housing, where winding coils wound along inside each annulus seperately. When electrifying each winding coils on each annulus, each corresponding disk can rotate the axle at a fixed ratio to output an extreme high speed or a high torque at low or moderate speed. Such disks and annuli are arranged according to their decrement diameters from the opening to a top of the housing; thereby, each disk is corresponding to each annulus with winding coils in one-to-one relationship. However, magnets disposed to a perimeter of each disk, which is made from magnetic insulation material, such as aluminum alloys, to avoid from interference among each disk. | 10-16-2008 |
20080284267 | Rotor assembly - Devices and methods are provided for a rotor assembly and an electric motor. One embodiment for a rotor assembly includes a first rotor including a first interface surface and a second rotor including a second interface surface corresponding to the first interface surface. Also, the first rotor is positioned with the first interface surface in direct physical contact with the second interface surface of the second rotor. | 11-20-2008 |
20090001831 | Axial Field Electric Motor and Method - A hybrid field, brushless, permanent magnet electric motor utilizing a rotor with two sets of permanent magnets oriented such that the flux produced by the two sets of magnets is perpendicular to each other. A plurality of axial flux permanent magnets are positioned radially interiorly of a plurality of radial flux permanent magnets. Axial stators interact with the axial flux permanent magnets. A radially positioned stator interacts with radial flux permanent magnets. In one configuration, an electronic feedback system is created that magnetically clamps and holds the hybrid rotor in its axially centrally aligned position, thereby reducing axial vibrations. | 01-01-2009 |
20090218898 | MULTI FUNCTION ENGINES - This disclosure describes an arrangement of axially-aligned motors and tubular or solid drive shafts enabling multiple motors and drive shafts to operate within a compact volume. The motors are axially-aligned to each other and each motor comprises a drive shaft that is axially-aligned to the motor and to the other drive shafts. At least one drive shaft is tubular thus allowing one or more drive shafts to fit within each other just as a telescoping apparatus operates. Drive shafts can thus encompass virtually the same space while rotating at the same or different speeds and directions and can have the same or different torques imparted upon them. | 09-03-2009 |
20090273251 | Synchronous Machine - A magnet wheel and a stator winding which are necessary for an excitation device are included in a synchronous machine. Energy is transferred to the magnet wheel through inductivity, preferably, energy to a super-conductive coil, by the excitation device. Protection against the magnetic field produced by the current in the winding head is provided in the form of a specific system which is used to reduce the corruptions of the interfering fields of stator and rotor winding. | 11-05-2009 |
20100019593 | POLYPHASIC MULTI-COIL GENERATOR - A polyphasic multi-coil generator includes a drive shaft, at least first and second rotors rigidly mounted on the drive shaft so as to simultaneously synchronously rotate with rotation of the drive shaft, and at least one stator sandwiched between the first and second rotors. A stator array on the stator has an array of electrically conductive coils mounted to the stator in a first angular orientation about the drive shaft. The rotors each have an array of magnets which are circumferentially equally spaced around the rotor and located at the same radially spacing with respect to the centre of the rotor and the drive shaft at a first angular orientation relative to the drive shaft. The arrays of magnets on adjacent rotors are off-set by an angular offset relative to one another. | 01-28-2010 |
20100052450 | DRIVE ARRANGEMENT FOR MOLDING MACHINES AND EXTRUDER HAVING TWO DRIVES - A drive arrangement with a first motor and a second motor is described, the first and second motor being coupled via a first coupling unit. The first motor is provided to generate uniform low-frequency movements and the second motor performs a higher frequency alternating movement to be overlapped. The total movement is transmitted from the second motor to a machine component coupled via a second coupling unit. The first coupling unit is configured to transfer the uniform low-frequency movement of the first motor to the second motor, wherein a transmission of the higher frequency alternating movement of the second motor to the first motor is suppressed. | 03-04-2010 |
20100084935 | PERMANENT MAGNET SYNCHRONOUS MOTOR AND DRIVE SYSTEM - A hybrid motor for powering a compressor of a chiller system includes a first rotor portion and a first stator portion configured as a permanent magnet motor and a second rotor portion and a second stator portion configured as a reluctance motor. The second rotor portion includes a reluctance-type rotor, and the second stator portion includes electromagnetic windings capable of inducing a rotary magnetic field. The first rotor portion and the second rotor portion are attached to a common drive shaft. The reluctance motor is arranged to generate start-up torque and initiate rotation of the drive shaft until the drive shaft achieves a predetermined rotational speed. The permanent magnet motor is arranged to power the drive shaft between the predetermined rotational speed and a maximum rotational speed. | 04-08-2010 |
20100187929 | MOTOR ASSEMBLY WITH COAXIAL SHAFTS - A motor assembly with coaxial shafts is provided which can be produced at low costs and in which a plurality of motors can be disposed with their respective rotary shafts arranged coaxially to one another with high coupling and assembling accuracy in a simple structure. Each motor includes a housing member and ball bearings to rotatably support the rotary shaft and two adjacent motors are fixedly coupled together such that the respective housing members of the adjacent motors are fitted with each other. | 07-29-2010 |
20100219707 | Electric motor - An electric motor, said electric motor comprising: a motor first section, said motor first section including a first section stator, said first section stator including a plurality of coils disposed in a substantially annular configuration therearound, and a first section rotor, said first section rotor including a plurality of permanent magnets disposed in a substantially annular configuration therearound, said first section rotor being rotatable with respect to said first section stator; a motor second section, said motor second section including a second section stator, said second section stator including a plurality of coils disposed in a substantially annular configuration therearound, and a second section rotor, said second section rotor including a plurality of permanent magnets disposed in a substantially annular configuration therearound, said second section rotor being rotatable with respect to said second section stator; said first and second section rotors being substantially coaxial and facing each other, said first and second section rotors being rotatable independently from each other; said first and second section rotors being magnetically coupled to each other so that a rotation of a first one of said first and second section rotors causes a rotation of the other one said first and second section rotor. | 09-02-2010 |
20100237733 | HYBRID AIRCRAFT ELECTRICAL ARCHITECTURE WITH BOTH VARIABLE AND CONSTANT FREQUENCY GENERATORS - An electrical generation system utilizes a variable frequency generator operating in combination with a constant frequency generator. Also disclosed and claimed are an aircraft electrical architecture, and a gas turbine engine incorporating the above electrical generation system. | 09-23-2010 |
20110095635 | Various motor assembly - A various motor assembly comprises at least one single motor allowing to enter a coding position at instant; a single-layer circular or cylindrical motor unit comprised of the at least one single motor; a multi-layer cylinder motor set piled from the single-layer circular or cylindrical motor unit, and including piled and horizontal cylinders, circular cylinders and conical cylinders, wherein the conical cylinders are numbered and located at aligned or unaligned positions. | 04-28-2011 |
20110140560 | METHOD AND APPARATUS FOR COMPENSATING A LINE SYNCHRONOUS GENERATOR - A three-phase line synchronous generator with an exciter and generator stage. The exciter stage includes an exciter stator having n poles and an exciter rotor having n poles and disposed for rotation within the exciter stator, and the generator stage includes a generator stator having n poles and a generator rotor having n poles. The generator rotor being mechanically coupled to the exciter rotor and disposed for rotation within the generator stator, wherein the poles of the stators, or the poles of the rotors, are angularly displace by one pole pitch. | 06-16-2011 |
20120133227 | MOTOR DRIVE SYSTEM ARRANGEMENT TO REDUCE TORQUE RIPPLE - A vehicle motor drive system having a first motor and a second motor connected by a common rotatable shaft, wherein the shaft is in operable engagement with a first and second wheel. The first motor is coupled to the first end of the rotatable shaft member and the second motor is coupled to the second end of the rotatable shaft member. The first motor and the second motor are mounted ninety electrical degrees out of phase from one another to minimize lorque ripple. | 05-31-2012 |
20120200184 | RELATIVE DRIVING DEVICE, MOVING VEHICLE, AND ROBOT - A relative driving device includes a stator; a first rotor; and a second rotor, in which the stator includes a first electromagnetic coil and a first control unit that controls current supplied to the first electromagnetic coil, the first rotor includes a first magnet and a second magnet, the second rotor includes a second electromagnetic coil and a second control unit that controls current supplied to the second electromagnetic coil, the first electromagnetic coil and the first magnet are disposed so as to face each other to form the first driving mechanism, and the second electromagnetic coil and the second magnet are disposed so as to face each other to form the second driving mechanism. | 08-09-2012 |
20120206001 | MAGNETIC FIELD FOCUSING FOR ACTUATOR APPLICATIONS - A switched reluctance motor includes a stator and a rotor, the stator having stator poles supporting a magnetic field focusing device such as a near field plates on each stator pole tip. An example near field plate has a spatially modulated surface reactance configured so as to focus magnetic flux extending from each pole tip within at least one region of increased magnetic field proximate the pole tip. | 08-16-2012 |
20130181561 | METHOD AND APPARATUS FOR COMPENSATING A LINE SYNCHRONOUS GENERATOR - A three-phase line synchronous generator with an exciter and generator stage. The exciter stage includes an exciter stator having n poles and an exciter rotor having n poles and disposed for rotation within the exciter stator, and the generator stage includes a generator stator having n poles and a generator rotor having n poles. The generator rotor being mechanically coupled to the exciter rotor and disposed for rotation within the generator stator, wherein the poles of the stators, or the poles of the rotors, are angularly displace by one pole pitch. | 07-18-2013 |
20130249338 | TANDEM ELECTRIC MACHINE ARRANGEMENT - The tandem electric machine arrangement comprises an outside rotor having two axially spaced-apart sets of circumferentially-disposed permanent magnets. It also comprises an inside stator having at least two electrically-independent windings, the at least two windings axially spaced apart from one another and disposed relative to the magnet sets to thereby be magnet coupled to a respective one of the sets of permanent magnets during rotation of the rotor. One of the rotor and the stator is provided in two separate pieces, each piece supported from opposite axial sides of the electric machine relative to one another. The other of the rotor and the stator is supported from substantially centrally of the two pieces. | 09-26-2013 |
20130270947 | HIGH ACCELERATION ROTARY ACTUATOR - A high acceleration rotary actuator motor assembly is provided comprising a plurality of phase motor elements provided in tandem on a shaft, each phase element including a rotor carrying magnets which alternate exposed poles, the rotor being connected to the shaft and surrounded by a stator formed of a plurality of interconnected segmented stator elements having a contiguous winding to form four magnetic poles, the stator being in electrical communication with a phase electric drive unit, wherein each of the poles exert a magnetic force upon the magnets carried by the rotor when the poles are electrically charged by the phase electric drive unit. The rotors and magnets of each phase motor element are offset about the shaft from one another. In addition, the phase motor elements are electrically isolated from one another. | 10-17-2013 |
20130328428 | Cross-interlocked multi-set switch type DC brushless electric machine system having auxiliary excitation winding set - The present invention relates to a multi-set switched DC brushless electric machine having its rotary part of electric machine being installed with an auxiliary excitation winding set, for being connected in series with a magnetic field winding set of electric machine of another electric machine through the auxiliary excitation winding set installed on the rotary part of electric machine, such that the excitation can be variable through altering the current of the magnetic field winding set of electric machine of the another electric machine thereby changing the operational characteristic of the electric machine. | 12-12-2013 |
20140139062 | MODULATING CURRENT IN A DUAL GENERATOR SYSTEM - A dual-generator assembly includes a first generator configured to generate a first current and a second generator configured to generate a second current modulated based on harmonic current in the first current. | 05-22-2014 |
20140145536 | METHOD AND APPARATUS FOR COMPENSATING A LINE SYNCHRONOUS GENERATOR - A three-phase line synchronous generator with an exciter and generator stage. The exciter stage includes an exciter stator having n poles and an exciter rotor having n poles and disposed for rotation within the exciter stator, and the generator stage includes a generator stator having n poles and a generator rotor having n poles. The generator rotor being mechanically coupled to the exciter rotor and disposed for rotation within the generator stator, wherein the poles of the stators, or the poles of the rotors, are angularly displace by one pole pitch. | 05-29-2014 |
20140175927 | DRIVE DEVICE FOR ELECTRIC VEHICLE - An electric vehicle drive device includes a casing; and a plurality of motor generators mounted in the casing, each of the motor generators including a plurality of fastening portions at which a stator of the motor generator is fixed to the casing, and a number of the fastening portions of one of the motor generators being coprime to a number of the fastening portions of at least one of the rest of the motor generators. | 06-26-2014 |
20140191606 | MULTI-CHANNEL WOUND-FIELD SYNCHRONOUS MACHINE - A multi-channel wound-field synchronous machine and method of assembling a multi-channel axial-flux wound-field synchronous machine are described. The machine includes an even number of stators and a plurality of field-excitation windings, each of the plurality of field-excitation windings being associated with a respective one of the stators. The machine also includes an exciter to feed all of the plurality of field-excitation windings. | 07-10-2014 |
20140232228 | POWER TRANSMISSION APPARATUS - A rotational difference is generated between a first and a second rotor and a third rotor, which causes an induced current to flow in a first rotor winding. This causes a torque to act between the first rotor and the third rotor. The rotary magnetic field generated by the induced current flowing through a second rotor winding interacts with a second stator, which in turn generates an induced electromotive force in a second stator winding. The induced electromotive force is applied via a phase adjustment circuit to a first stator winding, which generates a rotary magnetic field and causes a torque to act between the first stator and the third rotor. The rotary magnetic field generated by the second rotor winding and the induced current flowing in the second stator winding causes a torque to act between the second stator and the second rotor. | 08-21-2014 |
20140265693 | INTEGRATED STARTER GENERATOR - An integrated starter-generator (ISG) system includes a flux-regulated permanent magnet machine (PMM), a wound-field synchronous machine, and a control coil controller. The flux-regulated PMM includes a stationary portion having a control coil and a plurality of permanent magnets, and a rotating portion that includes rotating armature windings. The wound-field synchronous machine includes a stationary portion that includes a main armature winding and a rotating portion that includes a main field winding that receives excitation from the flux-regulated PMM. The control coil controller controls current supplied to the control coil of the flux-regulated PMM to selectively control magnetic flux presented to the rotating armature windings. | 09-18-2014 |
20140265694 | ELECTRIC ROTARY MACHINE UNIT - One embodiment provides an electric rotary machine unit including: a first electric rotary machine having a first stator; and a second electric rotary machine having a second stator. A coil configured by plural coil segments is disposed in each of the first and second stators. The first and second stators are disposed so that connecting portions of the coil segments or joint portions of leg portions of the coil segments are positioned between the stator cores thereof. First and second feeding portions are interposed between the first and second stators in the axial direction and spaced apart from each other in the circumferential direction. | 09-18-2014 |
20140292130 | HETEROGENEOUS MOTOR - The present invention provides an anomalous electric machinery including an armature component and a magnetic pole component which perform a relative movement around a common axis. The armature component and the magnetic pole component constitute a magneto-electricity system unit which can form an axisymmetric anomalous curved shape around the common axis. The axisymmetric anomalous curved shape of the magneto-electricity system unit is not a plane that is perpendicular to the common axis or appears to be approximately perpendicular to the common axis. The present invention innovates in the structure and the structure and shape of the magneto-electricity system unit to adapt to the requirements of special application space and to raise space utilization rate. | 10-02-2014 |
20140312728 | DRIVING DEVICE - A driving device is provided with a gear unit and a plurality of motors. The gear unit includes a plurality of input shafts supported by a supporting member, and a driven member to which the plurality of input shafts is engaged. Each motor rotor is respectively attached to a corresponding one of the input shafts. Each motor stator is attached to a housing that is detachably attached to the supporting member. When the housing is attached to the supporting member, phase angles of the rotors of all of the motors are equal. | 10-23-2014 |
20140312729 | MOTOR HAVING INTEGRAL STATOR CORE - Provided is a motor having an integral stator core, which includes: stators including a plurality of split stator cores that are annularly disposed, bobbins that are surrounded on respective outer circumferential surfaces of the stator cores, and coils wound on an outer circumferential surface of each bobbin; and rotors that are arranged with a gap from each stator, in which the stator core is integrally molded to include a yoke around which the coils are wound, and a first flange and a second flange that are formed at both ends of the yoke, and in which coil winding grooves that are formed at height lower than those of the upper and lower surfaces of the first and second flanges, are formed on the upper and lower surfaces as well as the left and right surfaces of the yoke in order to reduce height of the stator core, to thereby enable the motor to be slimmed. | 10-23-2014 |
20140319949 | HIGH ACCELERATION ROTARY ACTUATOR - A high acceleration rotary actuator motor assembly is provided comprising a plurality of phase motor elements provided in tandem on a shaft, each phase element including a rotor carrying magnets which alternate exposed poles, the rotor being connected to the shaft and surrounded by a stator formed of a plurality of interconnected segmented stator elements having a contiguous winding to form four magnetic poles, the stator being in electrical communication with a phase electric drive unit, wherein each of the poles exert a magnetic force upon the magnets carried by the rotor when the poles are electrically charged by the phase electric drive unit. The rotors and magnets of each phase motor element are offset about the shaft from one another. In addition, the phase motor elements are electrically isolated from one another. | 10-30-2014 |
20140339942 | ELECTRIC PROPULSION SYSTEM - An electric propulsion system with at least two shafts, includes at least two electric motors, at least one first motor 3 and at least one second motor 4. Each motor includes a stator “S” and a rotor “R”. The propulsion system includes, a fixing system 5, adapted to lock the stators “S” of the motors to one another. The first motor 3 is a motor in which the stator “S” is arranged in an inner position with respect to the rotor “R”, which is arranged on the outside of the stator “SH, and the second motor 4 is a motor in which the stator “S” is arranged in an outer position with respect to the rotor “R”, which is arranged on the inside of the stator “S”. | 11-20-2014 |
20150108864 | COAXIAL DIRECT DRIVE SYSTEM - A coaxial direct drive system includes at least two prime movers mounted to a motor carrier member about a common axis. Each prime mover includes a stator affixed to the motor carrier member, and each prime mover further includes a rotor which can rotate about the common axis. Each rotor has a driven member affixed to it, which rotates with the respective rotor, and to which driven objects, such as aero foil blades, etc. can be affixed. The motor carrier member can be directly mounted to an object to be propelled by the coaxial direct drive system, or can be hollow to receive a support mast which is mounted to the object to be driven. The driven objects can have different rotational senses, such that when the prime movers counter rotate, the driven objects generate trust in the same direction. | 04-23-2015 |
20160254737 | Electromagnetic Angular Acceleration Propulsion System | 09-01-2016 |