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| Number | Title | Issue Date |
| 8183734 | Hybrid winding configuration of an electric machine An electric machine system includes an electric machine and a companion device. The electric machine has a stationary member and a movable member that, by interaction of magnetic fields, at least one of moves relative to the stationary member or generates electricit... | 05/22/2012 |
| 8174160 | Group of three stator windings for a stator of an electric machine, a stator arrangement, a generator, and wind turbine A group of three stator windings for a stator of an electric machine, a stator arrangement, a generator, and wind turbine are provided. The first winding head segments of the three stator windings differ in form such that the first winding head segments of at least ... | 05/08/2012 |
| 8174159 | Optimized multi-phase armature winding An electrical motor or generator asymmetrical armature winding configuration generating a multi-phase balanced power output. Each winding group for each pole, and the conductors constituting each winding group, are chosen individually according to their magnetomotiv... | 05/08/2012 |
| 8154166 | Dual layer winding pattern A dual-winding layer arrangement for a three-phase, four pole motor is provided. ... | 04/10/2012 |
| 8093777 | Group of three stator windings for a stator of an electric machine, a stator arrangement, a generator, and wind turbine In one aspect, a stator is provided having a first cylindrical surface with a plurality circumferentially spaced winding slots, each winding slot extending along an axial length of the first cylindrical surface and formed to embed a segment of a single stator windin... | 01/10/2012 |
| 8018113 | 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... | 09/13/2011 |
| 8013491 | Stator for an electric drive motor The invention relates to a stator (1) for an electric drive motor having a number of stator teeth separated by grooves, wherein the stator teeth are wound by a multi-strand winding, and wherein one strand comprises several coils (5, 6), and wherein ind... | 09/06/2011 |
| 8008828 | Electric rotating machine The electric rotating machine includes a rotor around which a field coil is wound, and a stator including a stator core around which an armature winding is wound. The armature winding includes a first three-phase winding whose phase coils are delta-connected to form... | 08/30/2011 |
| 8008829 | Armature for a rotating electrical machine In an armature, the upper and lower coil pieces in one half of the parallel circuits are located at the 1st, 4th, 6th, 7th, 9th, 12th and 14th positions, and the upper and lower coil pieces in remaining half of the parallel circuits are located at the 2nd, 3rd, 5th,... | 08/30/2011 |
| 7982354 | Electric motor A DC motor, has a stator housing accommodating a permanent magnet stator; a rotor, rotatably mounted confronting the stator, the rotor having a shaft, a rotor core fitted to the shaft and having laminations forming salient poles, a commutator fitted to the shaft adj... | 07/19/2011 |
| 7863794 | Armature winding of rotating electrical machine There is provided a 3-phase 2-layer armature winding of a rotating electrical machine. The lead-out connection conductor connected to the output terminal is connected to a coil piece positioned at least farther than a first coil piece inside the phase belt counted f... | 01/04/2011 |
| 7834508 | Slot positions for a three-phase two-pole armature winding with a seventy-two slot armature core In an armature, the upper and lower coil pieces in the first and third parallel circuits are located at the 1st, 4th, 6th, 7th, 10th and 12th positions, and the upper and lower coil pieces in the seco... | 11/16/2010 |
| 7821170 | Electric motor A DC motor, has a stator housing accommodating a permanent magnet stator; a rotor, rotatably mounted confronting the stator, the rotor having a shaft, a rotor core fitted to the shaft and having laminations forming salient poles, a commutator fitted to the shaft adj... | 10/26/2010 |
| 7772737 | Two conductor winding for an induction motor circuit An electrical induction motor has a main winding formed with two electrical conductors having different electrical resistivities. The motor includes a stator having a structure about which a winding is formed, and the winding includes a first electrical conductor ha... | 08/10/2010 |
| 7705507 | Electrical machine having a three-phase winding system The electrical machine has a stator, which comprises thirty-six slots and thirty-six teeth with an alternating sequence and a winding system (10) which is arranged at least partially in the slots and has three winding phases (34, 35, 36). The winding s... | 04/27/2010 |
| 7692351 | Winding structure of rotating electric machine A stator winding has series coils and the series coils are connected in parallel. One of the series coil includes series-connected U phase coils and the other series coil includes series-connected U phase coils. A part of a wire connecting U phase coils of that one ... | 04/06/2010 |
| 7638917 | Electrical rotating machine An electrical rotating machine with permanent magnets which is configured such that the ratio of the number of magnetic poles of permanent magnets 3 to the number of magnetic poles of coils 12 is at 10:9 or 8:9. The coils 12 are configured such ... | 12/29/2009 |
| 7619344 | Armature of rotary electric machine and manufacturing method thereof In a rotary electric machine, coils to be wound around an armature are wound so as to have a good magnetic balance. In a rotary electric machine formed with four poles, ten slots, and twenty commentator segments, a pair of coils that respectively conduct an electric... | 11/17/2009 |
| 7602092 | Electrical machine having symmetrical coil sections The invention relates to an electrical machine (10), and to a method for producing such an electrical machine, especially for adjusting mobile parts in a motor vehicle. Said machine comprises a rotor (20) on which a bipolar electrical winding (25 | 10/13/2009 |
| 7592731 | DC rotary electric machine having balance winding for reducing variations in magnetizing force between respective field magnet poles In a rotary electric machine having a field winding wound on field magnet iron cores, and an armature with an armature winding connected in series with the field winding through a pair of brushes and a corresponding pair of connecting leads that are electrically con... | 09/22/2009 |
| 7579736 | Three-phase DC brushless motor and winding method A three-phase DC brushless motor and coil winding method provide a coil winding enabling consistent starting with PWM sensorless driving by suppressing the DC offset component of the induced voltage resulting from an imbalance in the motor coil windings. The method ... | 08/25/2009 |
| 7567007 | Motor and method for manufacturing the motor Object of the invention is to provide an improved technique for winding a wire to form an armature winding between a commutator and an armature. Representative motor is provided with a motor with an armature having slots, a commutator, and segments on the commutator... | 07/28/2009 |
| 7432626 | Dynamoelectric machine having reduced magnetic noise and method An automotive alternator including a rotor having a plurality of poles; a plurality of phases in operable communication with the plurality of poles; and a stator core in operable communication with the rotor, the stator having a number of slots defined by: ... | 10/07/2008 |
| 7430796 | Method for winding the stator of a multiphase electric motor In a method for winding the stator of a multiphase electric motor a plurality of mutually spaced stator teeth are assigned to each phase, wherein all the teeth of the stator are wound without a break in the winding wire, and wherein the winding wire is taken via a c... | 10/07/2008 |
| 7417351 | Rotary machine A rotary machine having a stator composed of a stator iron core having a plurality of slots formed in the direction of the rotation axis and stator windings inserted into the plurality of slots, wherein the stator windings are composed of a plurality of conductors r... | 08/26/2008 |
| 7388312 | Power tool It is an object of the invention to provide an improved technique for controlling the output characteristic of a motor. Representative power tool includes a tool bit and a motor. The motor drives the tool bit and includes an armature, a coordinator, a plurality of s... | 06/17/2008 |
| 7388311 | Redundant windings with current limiting means for electric machines An electric machine comprises a rotor assembly and a stator assembly adjacent the rotor assembly. The stator assembly includes windings disposed around a plurality of teeth, with each phase of the winding including at least one pair of coils wrapped in opposite dire... | 06/17/2008 |
| 7382071 | Rotating electric machine A variable-speed rotating electric machine includes at least two armatures having respective armature coils for multiple phases, and a rotor having permanent magnets. The armatures are arranged concentrically with each other in such a manner that electrical angular ... | 06/03/2008 |
| 7365456 | Positioning apparatus and charged-particle-beam exposure apparatus A positioning apparatus including a movable member for transmitting a driving force in a driving-axis direction to a stage, a first electromagnet for driving the movable member in the driving-axis direction by forming a magnetic path between the movable member and t... | 04/29/2008 |
| 7365468 | Motor stator having transposed winding layers An electric motor is provided with a multi-layered winding stator core configuration. A plurality of individual layers of wire strands are successively formed on each stator pole of a pole pair. Each winding layer is fabricated of the same relatively thin wire gauge... | 04/29/2008 |
| 7365467 | Low noise stator winding having a phase angle shift A stator for an electric machine includes a generally cylindrically-shaped stator core having a plurality of core teeth that define a plurality of core slots, the core slots extend between first and second ends of the stator core. A stator winding has a plurality of... | 04/29/2008 |
| 7362031 | Electric motor An electric motor has an armature rotatably accommodated inside a motor housing and a pair of magnets fixed to an inner surface of the motor housing so as to face the armature. The armature has an armature core 17 fixed to a rotating shaft 16, and ten ... | 04/22/2008 |
| 7352100 | Direct-current motor A stator of a direct current motor includes six magnetic poles. An armature of the direct current motor includes an armature core having eight slots, a plurality of windings wound around the armature core as concentrated windings, and a commutator having twenty-four... | 04/01/2008 |
| 7342335 | Magnetoelectric generator and method for manufacture thereof A magnetoelectric generator includes: a generating coil that is constituted by: a generating coil main body in which a conducting wire is wound onto respective teeth of a stator core; and an output wire that is led axially outward from the generating coil main body;... | 03/11/2008 |
| 7321176 | Multi pole electrical machine with reduced cogging force A multi pole electrical machine includes an armature and a stator. The armature is movable in a direction of armature motion with regard to said stator and includes armature pole pairs. These armature pole pairs follow each other in the direction of armature motion.... | 01/22/2008 |
| 7312550 | Architecture for electric machine In one aspect, an alternator is described which includes a current control apparatus including a stator winding and a control winding, wherein current control in the control winding regulates the stator winding. In another aspect, a gas turbine engine includes a mul... | 12/25/2007 |
| 7309938 | Rotary power converter A rotary power converter apparatus for coupling power between a prime driver and plural generators. The apparatus includes a frame having a first and second bearing aligned along an axis of rotation and a rotor assembly supported thereby. The rotor assembly includes... | 12/18/2007 |
| 7301310 | Excitation controlled synchronous permanent magnet machine The present invention provides an apparatus and methods for providing constant voltage from a permanent magnet generator at varying prime mover speeds or under varying loads. A constant voltage permanent magnet generator includes a housing, a magnetized rotor, a pri... | 11/27/2007 |
| 7291958 | Rotating back iron for synchronous motors/generators The present invention relates to systems and methods for a synchronous motor/generator including at least one back iron element which is rotated along with a rotor of the motor/generator. Rotation of the back iron(s) mitigates eddy current losses and improves effici... | 11/06/2007 |
| 7291933 | Double alternator and electrical system for a vehicle A double alternator for a vehicle and a vehicle electrical system employing the double alternator. ... | 11/06/2007 |
