Class 310/156.54 - Induced flux return poles

Subclass of Class 310 - Electrical generator or motor structure
Definition: Subject matter including induced flux return poles formed
No. of patents: 35
Last issue date: 09/16/2008

Number	Title	Issue Date
7425786	Permanent magnet type rotating electrical machine A permanent magnet type rotating electrical machine that is capable of producing a higher output and is suitable for high-speed rotation. A pair of nonmagnetic portions are formed in a rotor core at opposite ends of each pole. The waveform of induced voltage and a m...	09/16/2008
7362025	Internal permanent magnet rotor having improved configuration of magnetic flux barriers At each permanent magnet in a rotor of an IPM rotary electric machine, each of a pair of flux barriers respectively disposed adjoining circumferentially opposed side faces of the magnet is formed with a trench portion that extends farther from a circumferential face...	04/22/2008
7356906	Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same A method of manufacturing a radial core type double rotor brushless direct-current motor is provided. A double rotor structure is employed with inner and outer rotors which are doubly disposed such that a stator core is completely divided. A rotational shaft is rota...	04/15/2008
7345393	Cored motor A cored motor includes a rotor (21), having a rotor hub (2), a shaft (1) fixed to the rotor hub (2), a rotor yoke (5) in ring shape and a ring magnet (6) fixed to an inner circumferential surface of the rotor yoke (5)...	03/18/2008
7282827	Permanent magnet motor A permanent magnet motor has permanent-magnet-holding slots 5 formed in those parts of a rotor core 2A which correspond to sides of an approximately regular polygon centered on an axis of the rotor core 2A, permanent magnets 4 inserted in...	10/16/2007
7233090	Electric machine, in particular brushless synchronous motor An electrical machine, in particular a brushless synchronous motor has a stator (14) and a rotor (12) with salient poles (18) disposed distributed over its circumference, each of which poles has an enclosed permanent magnet (11) and a pol...	06/19/2007
7215055	Vehicle A rotating electric machine comprises a stator having stator salient poles, three-phase windings wound around said stator salient poles, a rotor rotatable held inside the said stator, and permanent magnets inserted into said rotor and positioned opposite to said sta...	05/08/2007
7196447	Rotating electric machine A rotating electric machine comprises a stator having stator salient poles, three-phases windings wound around the stator salient poles, a rotor rotatable held inside the stator, and permanent magnets inserted into the rotor and positioned opposite to the stator sal...	03/27/2007
7163072	Motor-driven vehicle drive control apparatus and method thereof A vehicle drive control apparatus including a motor, a battery, an inverter having a direct current supplied from the battery, wherein the inverter converts the direct current into an alternating current and supplies the alternating current to the motor and a contro...	01/16/2007
7122930	Electric motor An electric motor including a stator with a plurality of coils wound around a ring-shaped iron core, and a rotor rotatably disposed inside the stator is provided. The rotor includes a rotor shaft and a yoke. The yoke is provided near its periphery with a plurality o...	10/17/2006
7105971	Permanent-magnet rotor for an inner rotor type electric rotary machine and magnet-saving type rotor for a synchronous motor A total of three permanent magnets, installed in a rotor core closely to an outer cylindrical surface of the rotor core, are disposed at predetermined angular pitches in the circumferential direction of the rotor core. All of the permanent magnets are magnetized in ...	09/12/2006
7102264	Synchronous induction motor and manufacturing method and drive unit for the same, and hermetic electric compressor A synchronous induction motor features improved assemblability of a rotor, significantly reduced production cost, and improved operation performance of the motor. A plurality of die-cast secondary conductors is provided around a rotor yoke constituting the rotor of ...	09/05/2006
7088029	Generator An electric generator 10 of the present invention comprises a permanent magnet 14, a coil 30, a yoke 20, and attracted means 19 composed of a plurality of attracted pieces 18 which are arranged radially around the rotation a...	08/08/2006
7078838	Passive magnetic bearing for a motor-generator Conductive lap windings are interleaved with conventional loops in the stator of a motor-generator. The rotor provides magnetic induction lines that, when rotated, cut across the lap windings and the loops. When the rotor is laterally displaced from its equilibrium ...	07/18/2006
7057323	Modular flux controllable permanent magnet dynamoelectric machine A modular assembly for an electromagnetic machine is disclosed. The modular assembly includes a rotor assembly and a flux controlling assembly. The rotor assembly has a shaft and has a plurality of rotor laminations mounted on the shaft. The rotor laminations define...	06/06/2006
7005770	Permanent-magnet rotor for an inner rotor type electric rotary machine and magnet-saving type rotor for a synchronous motor A total of three permanent magnets, installed in a rotor core closely to an outer cylindrical surface of the rotor core, are disposed at predetermined angular pitches in the circumferential direction of the rotor core. All of the permanent magnets are magnetized in ...	02/28/2006
6949856	Permanent magnet rotating electric machine and electrically driven vehicle employing same A rotating electric machine comprises a stator having stator salient poles, three-phases windings wound around said stator salient poles, a rotor rotatable held inside the said stator, and permanent magnets inserted into said rotor and positioned opposite to said st...	09/27/2005
6919662	Motor A motor including: a rotor including a permanent magnet type rotor unit having a plurality of permanent magnets and a reluctance type rotor unit having a plurality of salient pole portions, the rotor units being coupled to each other in an axial direction; and a sta...	07/19/2005
6919663	Internal rotor motor A low-ripple multi-phase internal rotor motor has a slotted stator (28) separated by an air gap (39) from a central rotor (36). The rotor has a plurality of permanent magnets (214), preferably neodymium-boron, arranged in pockets (204	07/19/2005
6911756	Rotor core with magnets on the outer periphery of the core having a sine or trapezoidal wave A rotor for a motor includes a body formed by multiple silicon steel sheets securely abutting one another. Each silicon steel sheet has a series of apertures defined in an outer periphery thereof to define multiple grooves in an outer periphery of the body for recei...	06/28/2005
6906444	Permanent magnet motor Each permanent magnet formed in an open-letter shape is divided into a plurality of parts, the divided magnets are respectively fitted in open letter-shaped inserting portions, and ribs are respectively provided in dividing portions of the permanent magnets. Accordi...	06/14/2005
6891295	Flywheel magneto generator A flywheel magneto generator which comprises a rotor having a magnet attached to an outer circumferential side of a flywheel and a stator constructed by winding a generating coil around a core having a magnetic pole portion opposed to a magnetic pole of the rotor, w...	05/10/2005
6727623	Reduced impedance interior permanent magnet machine An interior permanent magnet machine is disclosed that, in one exemplary embodiment, includes a stator defining a number of stator poles, a rotor, a number of permanent magnets positioned within the interior of the rotor and at least two impedance reduction slits as...	04/27/2004
6707208	Flux diode motor An electric motor utilizing permanent magnets, wherein the permanent magnets produce a flux circuit in a first direction and shunt elements whereby the magnets and shunt elements rotate relative to each other wherein the shunt elements sequentially interrupt the mag...	03/16/2004
6396181	Rotating maching with advanced excitation means A rotary electrical machine, comprising a stator (100) having at least one armature winding (140) mounted in slots which define stator poles, and a rotor (200) mounted for rotation inside the stator, the rotor having at its outer periphery magnetic poles ...	05/28/2002
6127764	Electric machine An electric machine comprising a ferromagnetic first part (11) having a plurality of teeth (11C) arranged in a row, a ferromagnetic second part (12) having a plurality of poles (16, 17) arranged in a pole row confronting the row of teeth (11C) of the firs...	10/03/2000
6057622	Direct control of air gap flux in permanent magnet machines A method and apparatus for field weakening in PM machines uses field weakening coils (35, 44, 45, 71, 72) to produce flux in one or more stators (34, 49, 63, 64), including a flux which counters flux normally produced in air gaps between the stator(s) (34...	05/02/2000
5994814	Reluctance motor having magnetic poles formed by laminating steel plates in circumferential direction Directional electromagnetic steel plates are laminated, and a plurality of stator and rotor core segments are produced by generating into an approximate U-shape so as to provide a U-shaped cross section of the lamination. The direction of high magnetic pe...	11/30/1999
5864191	Efficient permanent magnet rotor for brushless motor An efficient permanent magnet rotor for a brushless motor has a yoke (2) formed by laminating many steel sheets (4) so as to provide an even number of magnetic poles projected externally, filed permanent magnets (3) inserted in the magnetic poles, bridges...	01/26/1999
5818139	Brushless DC motor Permanent magnet housing spaces 3b and spaces 3c for flux barrier are formed within a rotor 3. A minimum value of a distance from a portion on a boundary face of the permanent magnet housing space in a rotor surface side which portion corresponds to an ed...	10/06/1998
5811904	Permanent magnet dynamo electric machine In order to realize a permanent magnet dynamo electric machine which permits a high speed of rotation, the permanent magnet dynamo electric machine includes a stator 20 having a stator iron core 22 in which a stator winding 24 is wound, and a rotor 30 fac...	09/22/1998
5679995	Permanent magnet rotor of brushless motor A brushless motor includes a stator and a rotor rotatably supported within the stator. The rotor includes a yoke which is formed by laminating many steel sheets so as to provide an even number of magnetic poles projected externally and slots provided in e...	10/21/1997
5508576	Rotor for brushless electromotor A rotor having permanent magnets for a brushless electromotor includes a yoke formed from a plurality of silicon steel sheets laminated together and provided along its outer periphery with even number of, at least four magnetic poles. The magnetic poles a...	04/16/1996
5369325	Rotor for brushless electromotor and method for making same A rotor having permanent magnets for a brushless electromotor includes a yoke formed from a plurality of silicon steel sheets laminated together and provided along its outer periphery with even number of, at least four magnetic poles. The magnetic poles a...	11/29/1994
5223759	DC brushless motor with solid rotor having permanent magnet A DC brushless motor which includes a hollow cylindrical stator (2) having a plurality of exciting coils (6) secured to an inside thereof; a solid cylindrical rotor (7) provided within the stator and having at least two permanent magnets (30) therein so a...	06/29/1993

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Class 310/156.54 - Induced flux return poles