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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...
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7368842 |
Armature windings and dynamo-electric machine using the same
An armature winding includes a plurality of strand groups each having strands transposed and bound in at least two rows and multiple tiers, and a main insulator for covering the strand group. The...
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7348703 |
Monopole field electric motor-generator with switchable coil configuration
A pair of stators produce a magnetic field within a space between them a ferromagnetic toroidal rotor is rotationally mounted within the magnetic field. A plurality of windings are wound radially...
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7305752 |
Method for fabricating an inductive coil
A method of fabricating an inductive coil having inner and outer winding portions formed from one or more metal sheets. The method includes wrapping a fiber strand around an outer surface of the...
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7285889 |
Pulsed-inertial electric motor
The invention relates to electric motors, particularly to low-voltage gearless commutator motors, and can be used as motor-wheels in transportation vehicles and in other technologies. The aim of...
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7230358 |
Electrical resonance circuits for high efficiency direct current motors
Practically ideal electrical resonance is employed to soley provide armature power, and stator power if desired, to run DC motors. A practically ideal parallel resonant tank circuit (PIPRC) is used...
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6981308 |
Support members inside stator slots of a rotating electric machine and method of mounting these support members
A rotating electric machine ( 1 ) has a rotor, a stator ( 2 ), and stator windings ( 3, 4 ). The windings ( 3, 4 ) include high voltage cable drawn through slots ( 5, 6 ) in the stator ( 2 )....
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6975054 |
Electric motor
An electric motor includes a stator which carries permanent magnets, and a rotor which carries electromagnets. A particular arrangement of connecting up the windings of the electromagnets to the...
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6956313 |
Method and apparatus for reducing hot spot temperatures on stacked field windings
A method and apparatus for a generator coil includes a plurality of stacked windings in a rotor where individual turns are stacked in parallel sided radial slots in the rotor. Each successive turn...
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6936947 |
Turbo generator plant with a high voltage electric generator
In a plant containing a turbo-generator the magnetic circuit of the turbo-generator is included in an electric generator which directly supplies a high supply voltage of 20-800 kV, preferably...
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6919664 |
High voltage plants with electric motors
In a plant comprising one or more electric machines constructed with insulated conductors and connected for heavy current via insulated conductors, the magnetic circuit in at least one of these...
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6911759 |
Stator coil assembly for superconducting rotating machines
A stator for use in a rotating machine includes a first conductor; and a second conductor wound, in-hand, over the first conductor and along a longitudinal axis of the stator. The second conductor...
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6897593 |
Armature for an actuator
An armature for an actuator for applying vibration to a body along an axis, the armature having at least two parallel wound helical windings on the axis, and a terminal arrangement connected to the...
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6894416 |
Hydro-generator plant
The magnetic circuit of a generator in a hydro-generator plant is arranged to directly supply a high supply voltage of 20-800 kV, preferably higher than 36 kV. The generator is provided with solid...
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6882076 |
Rotary electric machine stator and method of manufacturing the same
In a rotary electric machine stator, a stator coil is formed of plural U-shaped conductor segments. Each of the conductor segments has a U-shaped turn portion disposed at one end of a stator core...
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6864613 |
Armature for an electromotive device
An inductive coil for an electromotive device includes a pair of concentric conductive sheet metal winding portions each comprising a plurality of axially extending conductive bands each being...
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6844649 |
Armature for a dynamo-electric machine having offsetting and overlapping coils
An armature includes a plurality of equalizing connectors for permanently electrically connecting pairs of commutator segments that should have the same electric potential, so that each of the...
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6822363 |
Electromagnetic device
An electromagnetic device comprises a magnetic field generating electrical circuit including a winding ( 1 ) having at least one electrical conductor ( 2 ). The winding comprises a solid insulation...
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6812610 |
Rotary electric machine, linear motor and stator thereof
One slot arranged between two slots containing a first armature winding contains a second armature winding for a phase different from a phase of the first armature winding; one slot arranged...
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6800980 |
Multi-pole commutator motor comprising bridge conductors
The invention relates to a multipole commutator motor ( 14 ) having at least four stator poles ( 16-19 ) and having armature coils ( 31-42 ) that work together with these stator poles and that, for...
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6798107 |
Rotating electric machines with magnetic circuit for high voltage and method for manufacturing the same
A rotating electric machine for direct connection to all types of high-voltage networks, in which the magnetic circuit adapted for high voltage comprises a rotor, stator and windings. The winding...
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6784586 |
Hybrid alternator with an axial end retainer for permanent magnets
The invention relates to a rotating electric machine, especially an alternator or alternator/starter for motor vehicles, including a stator surrounding a rotor ( 10 ) equipped with a pack of metal...
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6777835 |
Electrical power cooling technique
The apparatus for cooling a high power electrical transformer and electrical motors uses thermally conductive material interleaved between the turn layers of a high power transformer and iron core...
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6774530 |
Winding assemblies for electrical machines
Winding assemblies of electrical machines, such as electric motors, are provided which include a connector scheme having at least one conduit that is electrically coupled via a wave soldered...
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6741004 |
Creased armature winding insulator for dynamo-electric machine
A method includes the steps of forming a substantially U-shaped insulator having outwardly bent portions formed by bending the side portions thereof at bent parts so as to be apart from each other,...
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6703752 |
Stator winding bar for an electrical machine
In a stator winding bar for an electrical machine without end winding transposition and with transposition in the active part of 450°, the middle part of the active part, in order to compensate...
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6691556 |
Automatic data logging kit and method
An automatic data logging kit is used with a hydraulic integrity test kit for testing a liquid cooled stator bar system. The automatic data logging kit includes a spool piece having end connectors...
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6630764 |
High performance brushless motor and drive for an electrical vehicle motorization
The system includes a permanent magnet three-phase motor and an electronic current controlled inverter by pulse width modulation. The motor has twenty-two poles and twenty-four slots, three phases...
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6498415 |
High voltage stator coil having low loss insulator and electrode covering and method therefor
A high voltage stator bar 20 (FIG. 7 ) is used in a power generation system and includes a core section having a core 32 and stator coil 23 , including at least one coil involute. A ground...
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6437476 |
Multi-pole electric machine including flat winding for generator fields
A generator rotor includes a rotor body having defined pole regions with pole faces and parallel sides adjacent the pole faces. A winding module is fitted over the parallel sides of the rotor body,...
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6417593 |
Composite electrical insulation with contacting layer and method of making the same
An insulating material ( 10 ) for an electrical generator rotor and method of forming the same. An insulating substrate ( 12 ) is formed from a single layer of woven glass fabric ( 16 ) having a...
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6351052 |
Method of winding armature coil and coreless motor produced through such method
The present invention provides a method of winding an armature coil on a cylindrical resin insulator of coreless motors while improving magnetic flux efficiency of the coil. This method allows a...
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6252331 |
Brushless, separately-excited, variable-speed motor and AC generator/alternator with solenoid-wound, biphase AC rotor
A rotating electrical machine includes a two-phase rotor having two non-rotating solenoid-wound rotor coil assemblies and two interleaved pole assemblies. Each pole assembly is magnetically coupled...
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6252327 |
Stator having conductor bars and joint plates
A motor stator structure having a plurality of slots aligned with an axial direction of a stator core. The stator structure includes straight conductors having cross-sections that substantially...
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6201333 |
Method for producing conductor bars and stator winding for an electric machine
A conductor bar and a method for producing a conductor bar of a stator winding for an electric machine, in particular a generator, having a stator as well as a rotor disposed rotatably therein....
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6166463 |
Axial force electrical machines
The present invention resides in a radial air gap machine with a serrated air gap that can minimize external axial forces. This is accomplished by controlling the relationship between the air gap...
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6140732 |
Armature coil conductor and method of manufacture therefor
The lead portions have oval cross sections such that the dimensions of the cross sections of the lead portions parallel to the circumference of the armature are smaller than those of the straight...
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6008560 |
Inverter driven motor having winding termination reducing EMI
A motor with a switching power converter is connected to a power source for supplying power to the motor. The converter has a motor terminal selectively connected to a voltage bus. A stator core...
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5747910 |
Brushless motor
Brushless dynamoelectric machines utilizing conventional DC armature construction. The winding of the armature is modified by providing a set of three leads to its coil ring circuit at points...
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5704114 |
Armature coil conductor arraying apparatus
In an armature coil conductor arraying apparatus, a cylindrical coil guide tool 25 has a plurality of inner insertion holes or grooves 23a into which inner legs of coil conductors 2 are inserted...
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5661355 |
Direct-current electric motor and method of manufacturing this motor
This motor includes an armature winding (12) equipped with conducting coils (A1 to A4, B1 to B4, C1 to C4) distributed into three phases and into two, lower and upper, layers. The lower coils (A1,...
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5616978 |
Electroconductive article, having portions with variable resistance and a rotor produced therefrom
An electroconductive material has at least one portion in which the electrical resistance varies continuously along a gradient. Accordingly, since the material is not formed by directly bonding...
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5266858 |
Armatures and method for manufacturing such armatures
An armature for an electric motor has an improved integrated armature coil body. The integrated armature coil body includes an annular and substantially flat portion projecting a minimum distance...
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5247217 |
Safety system for a stepper-motor drive
In a safety system for a stepper-motor drive, a stepper motor for operating a throttle valve has poles with windings. Each pole winding is divided into part-windings, each of which is driven by a...
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5196752 |
System for supporting conductors for use in a dynamoelectric machine
A system for supporting conductors in a dynamoelectric machine having a stator assembly with a plurality of stationary armature elements spaced about a circumference positioned radially about a...
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5006745 |
Polyphase direct current motor
A three-phase direct-current motor has a field magnet having P field poles positioned as a circular array at angularly equally spaced intervals, and an armature having cores providing N slots with...
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4914335 |
Phase-displaced multiple polyphase dynamoelectric machine with wave windings
An armature of an AC generator includes a plurality of polyphase windings. Each of the polyphase windings is a wave winding passing about substantially the entire circumference of the armature. In...
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4893042 |
Rotor for DC motor
A rotor for a DC motor comprising an axial lamination of core sheets having a plurality of radially and inwardly extended slits, and armature coils wound around said lamination through said slits....
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4565939 |
Everted knitted tube insulation for windings of dynamoelectric machines
A knitted glass fiber tube is everted, or turned inside out to convert the usual outward flare which develops at the cut end thereof into a purse mouth which tends to urge the cut end inward...
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4467234 |
Armature of rotating machine with means to balance the mutual inductance of adjacent pairs of coils
A novel armature of an electric rotating machine is disclosed. The armature core is divided axially into two or more members. The coils of the armature winding are fixed on the armature core in...
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