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7605515 |
Variable reluctance dynamo-electric rotary machine provided with united magnetic, electric and polarising circuits and method for production thereof
A monophase transverse circuit has two rows of cylindrical air gaps which are provided with conductors between terminal pairs, the terminal pairs are rotated at a quarter turn in order, a coil in...
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7605512 |
Method of designing a reluctance resolver
A method of designing a reluctance resolver, and the resolver comprises a stator and a rotor, and an exciting coil and two sets of outputting wires wind around the tooth portion of the stator. The...
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7605500 |
Miniature generator
A miniature generator includes a carrier having a tubular shaft on the inside, a substantially C-shaped permanent magnet mounted on the tubular shaft inside the carrier, a match mounted on the...
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7579734 |
Apparatus and method that prevent flux reversal in the stator back material of a two-phase SRM (TPSRM)
A TPSRM may include a stator, having a plurality of poles and a ferromagnetic or iron back material, and a rotor having a plurality of poles and a ferromagnetic or iron back material. A current...
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7569964 |
Variable reluctance type angle detector
The variable reluctance type angle detector has a stator and a rotor. The rotor is provided rotatably with respect to the stator. The stator has a plurality of tooth members disposed in a circle....
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7560843 |
Vehicle drive system including a rotating electric machine and vehicle incorporating the same
A rotating electric machine includes a stator and a rotor. The tip of a salient pole portion of the rotor is bilaterally asymmetrically provided with a cut. The effect of the cut reduces torque...
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7541761 |
Electric motor with integral regulator inductance
An apparatus and a method of manufacture of a DC electric motor operable over a range of voltage by virtue of a DC-DC regulator having an inductance provided by one or more windings on the stator...
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7521826 |
Power tools with switched reluctance motor
A method of assembling a power tool, a power tool, a method of assembling an electrical device, and an electrical device includes a switched reluctance motor. The electrical device is preferably a...
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7482718 |
Enhanced internal electrical generator powered by hand-crank
Enhanced internal electrical generators are provided which include pole pieces that form air gaps flanked with conductive wire coils. Rotatable armatures supporting permanent magnets are arranged...
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7467456 |
Method of arranging a resolver
A method of arranging a resolver comprises the steps of: a, setting stator magnetic poles number of the resolver N s as a number being in integral multiples (t) of a phase number q; b, figuring...
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7459822 |
Rotating electric machine having switched or variable reluctance with flux transverse to the axis of rotation
An electric machine, such as a switched reluctance motor (SRM), having one or more transverse flux axes is described. The rotor and stator of the electric machine have more than one phase, not...
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7432704 |
Inductor-type resolver
An inductor-type resolver capable of reducing a residual voltage by providing a correction winding inside the resolver is provided. Two magnetic pole portions 11 and 15 include winding portions...
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7429840 |
Control of an electrical reluctance machine
An electrical machine having stator ( 30 ) and rotor ( 31 ) is disclosed. The motor has field windings (F) and armature windings (A) energized by a suitable power electronic controller ( 401 ). A...
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7425808 |
Vehicle drive system and vehicle provided with the same
A rotor is provided with slits each of which serves as a flux barrier blocking a magnetic flux. A direction shown by an arrow is a forward direction along which the rotor rotates when a vehicle...
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7385330 |
Permanent-magnet switched-flux machine
A permanent-magnet switched-flux (PMSF) apparatus comprises a plurality of permanent-magnet switched-flux (PMSF) devices, wherein each of the plurality of PMSF devices comprises a ferromagnetic...
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7312549 |
Transverse flux machine with stator made of e-shaped laminates
In order to improve the torque per weight ratio in electrical machines for a lower price it is proposed to use a segmented stator design. The segmented stator design is based on general E shaped...
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7279815 |
Swing motor
A swing motor having an opening formed asymmetrically inside a stator. The swing motor is formed with an asymmetrical opening, in particular in a semicircular shape inside the stator. The opening...
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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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7250734 |
High performance switched reluctance machine
Certain exemplary embodiments can provide a switched reluctance machine, comprising a rotor; and a stator encircling said rotor and comprising a plurality of radially distributed stator poles, each...
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7230360 |
Switched reluctance machine
A switched reluctance machine (SRM) having a rotor and stator pole numerical relationship of S number of stator poles and R number of rotor poles, where R=2S−2, when S is greater than 4; provides...
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7205694 |
Control of a switched reluctance drive
A switched reluctance machine has a stator which has an array of alternate wide and narrow poles around its inner circumference. Coils are wound around the wide poles only. The rotor includes...
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7157820 |
Resolver
Plurality of air gaps are formed in a torus-shaped stator body of the resolver. If a straight line were drawn from a center point of the stator body toward the outside in the radial direction of...
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7148599 |
Iron core winding, method of winding an iron core, and variable reluctance angle detector
An iron core winding is such that a winding of a given polarity is coiled in series so that the beginning of each coiling and the ending of each coiling cross on a magnetic pole that is positioned...
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7135860 |
Variable reluctance resolver including rotor with multiple detection portions
A variable reluctance resolver has a rotor with magnetic poles with 2× or greater axis combination angles, and is structured so that reliable and accurate zero point detection can be carried out....
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7119536 |
Two-resolver deviation angle detector having serially connected output windings
A deviation angle detector enlarges the application range by enlarging the detectable deviation angle range. The deviation angle detector has two resolvers, which have rotors, stators, and single...
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7088025 |
Variable-reluctance resolver and rotational angle sensor using same
A variable-reluctance resolver includes a rotor and a stator. The rotor includes axially connected first and second rotor portions. The first rotor portion has n salient poles provided about a...
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7078840 |
Brushless rotary electric machine having tandem rotary cores
A brushless rotary electric machine includes a stator having an annular armature core with first radial teeth at the outer periphery thereof and second radial teeth at the inner periphery thereof...
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7078839 |
Self-bearing step motor and its control method
The present invention relates to a self-bearing step motor, and more particularly, to self-bearing step motor system and a control method thereof, wherein a rotor can be supported by magnetic force...
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7064462 |
Power tools with switched reluctance motor
A method of assembling a power tool, a power tool, a method of assembling an electrical device, and an electrical device includes a switched reluctance motor. The electrical device is preferably a...
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7015615 |
Apparatus and method that prevent flux reversal in the stator back material of a two-phase SRM (TPSRM)
A TPSRM may include a stator, having a plurality of poles and a ferromagnetic or iron back material, and a rotor having a plurality of poles and a ferromagnetic or iron back material. A current...
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7005771 |
Variable reluctance resolver
A variable reluctance resolver is provided with an output winding having a reduced effect from externally introduced leakage magnetic flux. A variable reluctance resolver is provided with a...
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6958602 |
High-accuracy 1X variable-reluctance resolver
A high-accuracy, 1X VR resolver includes a first rotor portion having (N−1) salient poles, where N is an arbitrary integer not less than 3, a second rotor portion having N salient poles, a first...
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6930423 |
Rotation angle detector
According to the present invention, when using a pair of annular stators stacked together, they are deviated from each other so that the projected poles may not overlap each other, whereby...
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6903477 |
Induction machine with motor and generator operation modes
An electric machine selectively operates as a generator mode or a motor mode. The electric machine includes a stator core, a multi-phase armature winding, a field coil, a moving core having a...
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6894484 |
Wheel rotation detecting device
A wheel rotation detecting device including a sensor unit that is supported on a stationary ring which does not rotate even when the wheel is in use, and the rotation of the wheel that is attached...
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6870295 |
Oscillating motor and motor control apparatus and method
An oscillating motor is provided which can be reciprocally rotated within a predetermined rotation region without any conversion device for changing to a linear movement, and which can be simply...
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6867522 |
Asynchronous machine
A synchronous machine ( 10 ), in particular, for a starter-generator of an internal combustion engine, includes a stator, a rotor ( 22 ) having a rotor shaft ( 24 ), a stack of sheets ( 28 ), and...
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6849983 |
Rotary machine having bypath magnetic path blocking magnetic barrier
The rotary machine is composed of the rotor having magnetic poles and the stator having the stator yoke portion constituting the iron core tooth portion wound by the stator winding and the flux...
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6838794 |
Bearing assembly with electric power generator
To provide a bearing assembly having an electric power generating capability, that can be assembled compact in size and easily incorporated in a drive transmission system of an internal combustion...
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6836045 |
Electrical motor
An electric motor is equipped with a rotor having multiple rows of slits arranged along a radial direction. A permanent magnet is buried only in some of the slits, namely the ones closest to the...
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6836028 |
Segmented arc generator
A segmented arc generator is adapted to convert mechanical power such as wind or water power into electrical power at a wide range of wind or shaft speeds. A rotor has a plurality of salient poles...
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6806609 |
Single phase induction motor and hermetic reciprocal compressor having a single phase induction motor
A single phase induction motor and a compressor utilizing the single phase induction motor wherein the motor has a stator having a plurality of slots; a rotor being rotated by a magnetic field...
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6794791 |
Motor/generator with energized reluctance and coil in the air gap
The invention concerns a machine forming a motor or generator including a stator and a rotor. The rotor is a passive rotor, consisting of two ferromagnetic discs whereof at least one is toothed....
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6788013 |
Permanent magnet electric motor and method of making same
A motor for reducing torque ripple includes a shaft having a shaft axis, a rotor positioned about the shaft, a first magnet ring positioned on the rotor, the first magnet ring having magnets each...
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6787958 |
Electrical machines
An electrical motor or generator comprises a rotor 79 without windings, a stator 78 having armature windings comprising at least two coils A 1 , A 2 having active portions positioned within...
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6781273 |
Multi-circular flux motor
An invention is a new type of motor, a multi-circular flux motor. The invention has simple structure and comprises of a salient pole rotor and the silent pole stator. The stator pole is subdivided...
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6777844 |
Brushless motor
A vacuum cleaner assembly includes a motor having a rotor and a stator for providing motive power to the assembly. The rotor and stator each include armatures having tips. In one aspect, the widths...
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6777843 |
Resolver integrated type motor
A resolver-integrated motor has a radial irregular shape which is formed at an end on a non-load side of its motor shaft. This radial irregular shape is used as a resolver rotor. The radial...
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6769167 |
Method of manufacturing a rotor for a synchronous reluctance motor
A rotor for a synchronous reluctance motor of flux barrier type and manufacturing method thereof constructs a rotor for a synchronous reluctance motor by forming a magnetic core steel plate of disc...
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6727618 |
Bearingless switched reluctance motor
A switched reluctance motor has a stator with a first set of poles directed toward levitating a rotor horizontally within the stator. A disc shaped portion of a hybrid rotor is affected by the...
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