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5844345 |
Homopolar motor with dual rotors
A homopolar motor (10) has a field rotor (15) mounted on a frame (11) for rotation in a first rotational direction and for producing an electromagnetic field, and an armature rotor (17) mounted for...
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5821659 |
Homopolar transformer for conversion of electrical energy
The DC voltage of electrical energy applied to a homopolar machine, is corted by transformer windings in response to rotor rotation within the magnetic field of the homopolar machine, to a...
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5731645 |
Integrated motor/generator/flywheel utilizing a solid steel rotor
A flywheel energy conversion device provides highly efficient conversion between kinetic and electrical energy. The flywheel produces increased output by providing armature coils in an air gap...
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5703426 |
Field system assembly of commutator motor, commutator motor having field system assembly, and method for manufacturing field system assembly
A field system assembly of a double pole commutator motor includes a pair of yokes each having a connecting portion at both ends thereof, and a pair of poles each having a connecting portion which...
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5587618 |
Direct current homopolar machine
This invention relates to a homopolar machine. The homopolar machine can be used as a generator or a motor. In one embodiment, the homopolar machine has a conductive shaft which orbits around two...
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5530309 |
Homopolar machine
An improved homopolar machine in which a solid sliding current collector, or brush, is provided for contact with a flat, annular contact surface of a rotor. The flat plane of the contact surface is...
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5504382 |
Field controlled permanent magnet alternator
An alternator, or the like including a stator assembly and a rotor assembly within the stator assembly, wherein the stator assembly includes a pair of axially spaced core sections with a stationary...
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5481149 |
Homopolar dynamoelectric machine
A homopolar dynamoelectric machine comprises a solenoid coil for generating a magnetic field, having a cavity formed around an axis thereof. A rotating shaft, which constitutes a rotor, is...
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5451825 |
Voltage homopolar machine
A homopolar machine for use as a motor or a generator. The machine includes an elongated shaft rotatable about a longitudinal axis, a barrier disposed about the shaft, and first and second...
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5434462 |
High-power electrical machinery
An electrical machine having a stator formed from a pair of cup-shaped permanent magnets symmetrically disposed on opposite sides of a conductive, disk-shaped rotor. The magnets are polarized such...
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5426338 |
High-power electrical machinery with toroidal permanent magnets
A pair of hollow permanent magnets mounted to form a toroidal stator having cylindrical gaps and opposed cavities. The magnets are polarized such that their magnetic flux passes in one direction...
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5278470 |
Homopolar machine which acts as a direct current (DC) high voltage generator or motor
A homopolar machine for producing high voltage, direct current. The machine comprises a stator which supports the homopolar machine, a plurality of excitation coils disposed within the stator for...
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5241232 |
Homopolar motor-generator
A homopolar motor-generator comprising two homopolar machines in series with a conductive belt transmitting current between the rotors of the machines which are caused to rotate in synchronism in...
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5144179 |
Superconducting brushless homopolar motor with multiple winding rotor
A brushless homopolar dynamoelectric machine motor (1) has a rotor (3) with a least one winding (5) having multiple turns. The rotor is inductively charged using a flux pump or a rectifier....
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5068561 |
Homopolar rotary machine with flux bypass
A homopolar rotary dynamoelectrical machine used as motor or generator has a dense magnetic flux area and sparse magnetic flux area in the air gap between the confonting pole of the main field...
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H000994 |
Transposed air core homopolar generator conductors
Current state of the art air core homopolar generators employ large time ying magnetic fields (4 Tesla Range). These high fields are required for proper voltage, but also induce significant eddy...
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5049771 |
Electrical machine
An electrical machine which has a rotor positioned within a housing. The rotor has a pair of spaced-apart engagement portions, which, preferably, are tapered. The engagement portions are engaged by...
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5032748 |
Superconducting DC machine
A superconducting DC machine includes a superconductive field winding housed in a cryostat. A magnetic shield is arranged outside the cryostat. An armature drum is rotatably supported between the...
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5001378 |
Rotor with reduced windage losses
A homopolar, transverse pole rotor (14) having a central cylindrical body (24) with a set of circumferentially spaced, axially extending salient poles (28) at each end thereof, is constructed to...
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4975609 |
Homopolar dynamoelectric machine with plural independent outputs and improved rotor conductor
A homopolar dynamoelectric machine is provided with plural independent output terminals for selectable external interconnection to yield a variable output. Each output terminal is associated with a...
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H000838 |
Variable resistivity slip ring
The series wound, air core (SWAC) homopolar generator includes a pair of ls connected in series with a rotor having a pair of slip rings joined by conductive bars. To reduce eddy currents induced...
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4935650 |
Magnetohydrodynamic turbomachine construction for electric motors and generators
A MHD turbomachine includes a rotary ferromagnetic rotor, a stationary ferromagnetic stator surrounding the rotor and defining axially-spaced annular cavities which extend circumferentially about...
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4916346 |
Composite rotor lamination for use in reluctance hompolar, and permanent magnet machines
In a homopolar, switched reluctance, or interior permanent magnet motor, formed rotor laminations are employed to reduce eddy current losses in the pole faces and body of the rotor. The homopolar...
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4862757 |
Translatory drive linkage type of power transmission apparatus
An improved translatory drive linkage type of power transmission apparatus, which, in one preferred form, comprises an improved tape drive type of power transmission apparatus primarily for...
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4858304 |
Method of constructing a rotor assembly for homopolar generator
A homopolar generator (HPG) having the stator and an inner brush mechanism housed within the machine support structure utilizes a rotor separated into halves electrically insulated from each other,...
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4816709 |
Energy density homopolar generator
An improved energy density homopolar generator is disclosed. The generator includes a stator assembly for generating a magnetic field within an interior region and a rotor responsive to the input...
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4803391 |
Unipolar motor and mechanical conversion system and method
The electro-mechanical converter, that can be considered a unipolar motor, includes a rotatable rotor made of conductive but low permeability material having two axially spaced, radially protruding...
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4800311 |
Rotor assembly for homopolar generator
A homoplanar generator (HPG) having the stator and an inner brush mechanism housed within the machine support structure utilizes a rotor separated into halves electrically insulated from each...
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4767957 |
Liquid metal collector for acyclic generator
A plurality of circumferentially spaced, compliant, braided metal filament brushes are mounted by the stator of an acyclic generator for extension from the stator collector surface across the...
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4716328 |
Magnetic field compensated liquid metal current collector for acyclic generator
Active compensation in the form of a pair of trim coils and passive compensation in the form of a solenoidal-shaped magnetic shunt are disclosed for shaping the magnetic field existing in the...
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4712032 |
Liquid metal circulation in an acyclic generator collector
To minimize the effects of magnetohydrodynamic surge forces acting on the liquid metal in the collector gap of an acyclic generator, fluid flow impedance members in the form of annular, axially...
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4712033 |
Acyclic generator with liquid metal current collectors having circulating current barriers
Current barriers are incorporated in the liquid metal collector region of an acyclic generator to increase the impedance of the lossy circulating current paths therein, thereby to reduce...
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4710666 |
Homopolar generator with variable packing factor brushes
A homopolar dynamoelectric machine is provided with a rotor having a central axis and being mounted for relative rotation with a stator structure that supports a field coil encircling the rotor and...
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4710665 |
Homopolar dynamoelectric machine with self-compensating current collector
A homopolar dynamoelectric machine is provided with current collecting structures which produce a peripheral, circumferential component of load current for self-excitation. The current collection...
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4710660 |
Solenoidal homopolar generator
A solenoidal homopolar dynamoelectric machine is provided with inner and outer field coils positioned on opposite sides of a current collecting zone of a rotor which is mounted for rotation with...
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4698540 |
Brush assembly for a homopolar generator
A brush assembly for use in a homopolar dynamoelectric machine includes a plurality of contact elements extending into slots of a movable brush holder. Resilient tubular members extend through each...
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4692644 |
Fluid cooled acyclic generator rotor having a copper conductor diffusion bonded to a magnetic steel core
An internally cooled rotor for an acyclic generator has a ferromagnetic steel core to which is diffusion bonded a cylindrical copper conductor in which is embedded a multiplicity of cooling tubes...
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4691133 |
Iron-free rotary disk electrical machine
A rotary electrical machine having one or more rotor elements comprising non-magnetic conductors extending outwardly from the drive shaft axis and electrically coupled together at terminal...
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4686405 |
Homopolar dynamoelectric machine with externally actuated brushes
A homopolar dynamoelectric machine is provided with a stator structure having an interior surface defining an internal space for receiving a generally cylindrical rotor which is mounted for...
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4629922 |
Gas recirculator for acyclic machines
A cover gas recirculator in an acyclic generator having liquid metal collors for reducing entrainment of the liquid metal in the gas. Radial passages in the stator housing provide natural...
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4628221 |
Homopolar motor with pressurized liquid metal contact
A homopolar machine having a hollow cylindrical conductor integral with an iron magnetic coupler forms a rotor ring which encircles one end of a rotor. The rotor ring spins within a hermetically...
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4602179 |
Homopolar dynamoelectric machine with an auxiliary field coil
A drum type homopolar dynamoelectric machine includes a rotor, a main field coil and an auxiliary field coil. The field coils encircle different portions of the rotor and are supported by a stator...
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4602177 |
Homopolar generators with thermosyphons for improved cooling
A high current density component of a dynamoelectric machine rotor is cooled by the use of thermosyphons that carry heat from the heat generating element to a cooler part of the rotor. A homopolar...
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4581555 |
Homopolar dynamoelectric machine with a shielded stator excitation coil
A drum-type homopolar dynamoelectric machine includes a rotor and an annular field coil encircling a portion of the rotor. The field coil is supported by a stator structure having a main pole piece...
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4566744 |
Current collector for rotating shaft
A current collector having a housing which has a rotatably supported electrical contact shaft having a projecting end that is engageable with a rotating drive shaft, the housing including a mercury...
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4562368 |
Brush mechanism for a homopolar generator
A homopolar generator includes a stator producing a magnetic field and a rotor which rotates in the stator magnetic field to generate electrical discharge current. The current is available from a...
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4550283 |
Unipolar rotational speed transducer
Minaturized unipolar low power rotational speed transducers or tachometer generators are disclosed, one of which is comprised of coaxial housing and pole members of magnetic material and a...
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4544874 |
Homopolar generator power supply system
A high-energy, high-current homopolar generator pulsed power supply system that is compact and field portable. The power supply system includes a hompolar generator (HPG), an auxiliary supply and...
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4521709 |
Direct current dynamoelectric machines with auxiliary equalizer poles
In a rotating machine, for example heteropolar, auxiliary poles (14) are placed in practically the field poles (4) and close to the peripheral of a salient section (δ) of rotor (2), the same...
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4514653 |
Commutatorless direct current machine
A commutatorless DC machine has axially oriented magnetic flux in the air gaps between interleaved stator and rotor disks, and the rotor disks carry one or more radially oriented armature winding...
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