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7622842 |
Rotary electric machine and stator for rotary electric machines
In a rotary electric machine, output ends of first and second three-phase windings of first and second sets included in a first group are separated from those of third and fourth three-phase...
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7615906 |
Joint structure of electric wire, stator of rotary electric machine, method for manufacturing the same
When electric wires (joint conductors) are disposed adjacent each other in a peeled state of coatings, a gap corresponding to the total thickness of both conductors' insulating films as skin layers...
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7605513 |
Electric tool having electric motor with first and second coils having first and second coil bundles of different innermost peripheral length
A first coil includes a first inner-coil bundle and a first outer-coil bundle. The first outer-coil bundle is positioned radially outwardly of the first inner-coil bundle in a radial direction of a...
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7602093 |
Vehicle alternator and stator for vehicle alternator
A vehicle alternator and a stator for the vehicle alternator are disclosed wherein a stator winding includes a plurality of base segments wound on slots of the stator, each of the base segments...
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7600311 |
Method for producing a magnetically excitable core comprising a core winding for an electric machine
A method for producing a magnetically excitable core for an electrical machine, by which in a method step (S 1 ), the core, having a substantially parallelepiped shape with slots extending parallel...
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7598648 |
2/6 pole single-phase induction motor having shared windings
A multi-speed single-phase induction motor including a stator having a main winding selectively adapted for 2n-pole operation and 6n-pole operation, where n is an integer. The main winding includes...
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7598646 |
Electric motor with Halbach arrays
Electric motor configurations are provided with Halbach arrays. In one example, an electric motor includes a first plurality of magnets arranged in a first Halbach array. The first plurality of...
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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...
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7557483 |
Rotating electrical machine and manufacturing method thereof
A stator coil is configured of a first group of six turns of conductive wire, and a second group also of six turns, with the first group of six turns being wound on a spool, leaving a gap the same...
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7555893 |
Aircraft propulsion system
To provide an aircraft propulsion system which can secure the optimum thrust and thrust vector for flight conditions, as well as the optimum sectional area for the engine, and which is highly...
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7554238 |
Multi-winding motor with reduced impedance unbalance
The present invention provides a multi-winding motor. Two three-phase exciting windings Sa, Sb are wound on each of the magnetic pole sections of divided cores 9 . Two kinds of discrete winding...
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7545125 |
Generator for a motor vehicle having a B12 rectifier
The present invention relates to a six-phase generator for a motor vehicle having two three-phase systems displaced with respect to one another by 30°, the phase windings of one of the three-phase...
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7545070 |
Commutator motor having a number of field winding groups
A commutator motor, which has a series excitation or shunt excitation and which, in particular, is suited for use as a drive motor for a washing drum of a laundry treatment device. The stator of a...
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7545069 |
Electric machine winding arrangement
Rotational electric machine stator winding arrangement characterized, inter alia, by at least one coil of each parallel circuit being discontinuous with the other coils of the corresponding...
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7538460 |
Integrated resolver for high pole count motors
An AC synchronous motor, also known as a stepper motor, uses its magnetics and drive coils to produce both motion and excitation for sets of position sensing coils. Each drive phase is equipped...
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7531935 |
Polyphase electricturning machine such as an alternator or an alterno-starter, particular for a motor vehicle
A polyphase electric turning machine such as an alternator or an alterno-starter, particularly for a motor vehicle. The machine comprises a stator surrounding a rotor inside a case; the stator...
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7521835 |
Permanent magnet machine with windings having strand transposition
This document discusses, among other things, a stator with transposition between the windings or coils. The coils are free from transposition to increase the fill factor of the stator slots. The...
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7518332 |
Brushless synchronous motor and driving control apparatus therefor
A brushless synchronous motor is provided in a simple configuration and at a low cost. The brushless synchronous motor comprises a rotor having salient magnets arranged in a circumferential...
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7514834 |
Permanent magnet type three-phase ac generator
A permanent magnet type three-phase ac generator includes a stator having 3n (n is an integer) teeth and a tree-phase armature winding and a rotor having 4n magnetic poles each of which has a...
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7501735 |
Self-magnetized motor and stator structure thereof
A self-magnetized motor includes a stator adapted to rotate by electromagnetic interaction with a rotator, a plurality of slot teeth formed on and surrounding a through-hole of the stator, and an...
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7498709 |
Method and apparatus for winding segments of a segmented wound member of an electromechanical device
In certain embodiments, an electromechanical device is provided with N sets of stator segments, each segment comprising a respective, separate bobbin, the N sets of segments being wound with a...
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7495363 |
Maximum conductor motor and method of making same
A stator assembly is provided for a multi-phase motor. The stator assembly includes a stator with a plurality of teeth and a plurality of slots defined between the teeth. In addition, the stator...
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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...
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7425783 |
Linear motor
A stator portion of a linear motor includes a U-phase coil portion ( 10 U), a V-phase coil portion ( 10 V), and a W-phase coil portion ( 10 W) through which currents with phases different by 120...
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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,...
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7408281 |
Stator and brushless motor
A technique of facilitating a coil winding work by continuously winding coils in the same direction, in a stator in which a plurality of coils constituting a coil group of the same phase are...
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7402934 |
High performance air core motor-generator winding
A motor-generator for converting between electrical and rotational energy includes a rotor mounted for rotation about an axis of rotation relative to a stationary a stator that magnetically...
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7397156 |
Tandem rotary electric machine
A tandem rotary electric machine for vehicles is equipped with a primary rotary electric machine and a secondary rotary electric machine arranged in tandem mechanism, namely, of a dual stator-rotor...
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7391138 |
High-voltage electric rotating machine
The present invention relates an electric rotating machine comprising a plurality of phase coils each composed of a plurality of partial coils each made by connecting segments each composed of an...
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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...
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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...
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7370402 |
Method for producing stator packs for long-stator linear motors of magnetic levitation railways
A method for producing stator packs for long-stator linear motors of magnetic levitation vehicles is described. At first steel sheets are stacked to form a sheet stack, cross members are inserted...
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7365472 |
Electric 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...
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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....
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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...
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7360303 |
Method manufacturing for a winding assembly of a rotating electrical machine
There are proposed a manufacturing method of a winding assembly of a rotating electrical machine using a rotation block and a fixed block and a manufacturing apparatus used for the same. The...
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7352097 |
Motor or generator and method of producing the same
A plurality of slots are provided at a stator core. A coil component is produced by winding conductor wires around a forming tool several times. The coil component is cut off at a predetermined...
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7348705 |
Multi-phase fractional slot windings for electric machines having segmented bar-shaped windings
An electric machine comprises a stator core defining a plurality of slots. Multi-phase fractional slot windings are positioned in the slots of the stator core. The multi-phase winding include a...
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7342340 |
Alternator with identical conductor segments
In an automotive alternator according to the present invention, conductor segments of an inner winding portion and conductor segments of an outer winding portion have substantially the same shape.
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7327063 |
Rotary electric machine for vehicles
A rotary electric machine, such as a vehicular AC generator, including a rotor rotatably driven; and a stator having a stator iron core disposed to face the rotor and stator windings mounted at the...
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7323844 |
Circuit and method for control of a stepper motor
A circuit for the control of a stepper motor having a rotor configured as a permanent magnet and a stator configured of at least first and second energized excitation coils enclosing the rotor....
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7304397 |
Fuel cell system
A fuel cell based system for the generation of electrical energy employs a drive unit that includes at least two electric motors sharing a common rotor which is mechanically coupled to drive a...
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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...
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7291954 |
Dynamoelectric machine
In a dynamoelectric machine according to the present invention, a first three-phase wye-delta hybrid winding and a second three-phase wye-delta hybrid winding are installed in a stator core having...
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7288868 |
Motor generator
A motor generator is provided with a stator having a winding around each of a plurality of stator teeth, and a rotor having a plurality of permanent magnets by the number larger than that of the...
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7276831 |
Split-pole field-match motor
An electric motor having a plurality of rotor and stator poles, the poles of one element being alternately polarized and neutralized due to the use of direct current and alternating current...
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7276830 |
Flux impulse motor
A motor ( 1 ) has a stator ( 2 ) and a rotor ( 10 ) mounted for rotation in the stator. A commutating salient pole ( 11 ) of the stator as a winding ( 7 ), and a field-producing salient pole ( 12 )...
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7269890 |
Slotless rotary electric machine and manufacturing method of coils for such a machine
In a slotless permanent magnet rotary electric machinery, comprising a substantially cylindrical rotor ( 53 ) incorporated with a permanent magnet ( 52 ), a stator iron core ( 54 ) surrounding the...
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7268513 |
Motor/generator unit
A motor/generator unit in which a motor/generator and an invertor part are integrated and the wiring of a field circuit part for supplying current to a winding on a rotor is rationalized. In a...
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7268455 |
4-layer type of stator winding formed of sequentially connected segments located in respective slot pairs, and method of manufacture thereof
A phase winding of a stator winding comprises one or more pairs of interconnected partial coil, each partial coil formed of sequentially connected U-shaped segment pairs, each pair comprising a...
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