US3896320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed electric generator
Assignee: RTX Corp
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Filing: 1971-10-19
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Granted: 1975-07-22
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Expires: 1991-10-19
Abstract
Abstract A high speed, high voltage, square wave voltage, single slot per pole per phase, two phase, saturated rotary field AC generator having a rotary armature exciter, is comprised of noncompressible, rigid rotary coils utilizing oxided metal conductors having coolant fluid flowing therethrough, at least one surface of every electrical current conductor in the generator being in contact with flowing coolant fluid. The rotary structure is provided with a complete peripheral structural wrapping to oppose the centrifugal force generated in the coils due to high velocity. Rotary diodes between an exciter armature and the main generator, rotary field, a single static DC input and static AC output, and magnetic coupling comprising the sole energy coupling between the stator and the rotor, eliminate the need for slip rings or other electrical conduction through relatively moving parts. One embodiment utilizes turbine-like annular entrance of centrifugal pumping for coolant fluid in the rotary coils; in this embodiment, rotating diodes are mounted on coaxial shaft-like conductors. Another embodiment uses hollow radial conductors to carry coolant fluid, as well as electrical current, to the coils; in this embodiment the radial fluidcontaining electrical conductors are terminated in annular junctions connected to annular diode housings by longitudinal or axial conductors.
Inventors
- 👤 E Marston Moffatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:46
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/19; H02K11/00; H02K11/04; H02K11/042; H02K19/00; H02K19/16; H02K19/26
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
146 words
A rotary dynamo-electric machine comprising: a magnetic core having poles and slots thereon and adapted for rotation about the axis of said machine; a coil structure including electrical conductor means disposed to conduct current about a pole on said core, said conductor disposed with an exposed surface along substantially all of the differential elements of current carrying portions thereof; means disposed along the axis of said machine for providing a source of coolant fluid under pressure; and a pair of radial electrical conductor means extending from said fluid source radially outward to said coil structure, each of said conducting means being hollow and adapted to flow coolant fluid from said source to the exposed surfaces of said coil at one end thereof and from the other end of said coil structure back to said source, each conducting means electrically connected to one end of said coil.
Claim 2
Dependent Claim
146 words
A rotary dynamo-electric machine comprising: a magnetic core having poles and slots thereon and adapted for rotation about the axis of said machine; a coil structure including electrical conductor means disposed to conduct current about a pole on said core, said conductor disposed with an exposed surface along substantially all of the differential elements of current carrying portions thereof; means disposed along the axis of said machine for providing a source of coolant fluid under pressure; and a pair of radial electrical conductor means extending from said fluid source radially outward to said coil structure, each of said conducting means being hollow and adapted to flow coolant fluid from said source to the exposed surfaces of said coil at one end thereof and from the other end of said coil structure back to said source, each conducting means electrically connected to one end of said coil.
Claim 3
Dependent Claim
122 words
An alternating current generator comprising: a shaft adapted for rotation; an input direct current field stator; a rotary armature disposed for rotation on said shaft in proximity with said field stator, thereby to generate alternating current in said armature; a static two phase armature having two slots per pole; a plurality of rotary field coils disposed on said shaft for rotation with sAid rotary armature in proximity with said static armature; and electric current carrying means disposed on said shaft including rectifier means for rectifying the output of said rotary armature and applying the rectified current thereof to said field coils, whereby said static armature produces two phase AC electric power having square wave voltage and triangular current at the output thereof.
Claim 4
Dependent Claim
122 words
An alternating current generator comprising: a shaft adapted for rotation; an input direct current field stator; a rotary armature disposed for rotation on said shaft in proximity with said field stator, thereby to generate alternating current in said armature; a static two phase armature having two slots per pole; a plurality of rotary field coils disposed on said shaft for rotation with sAid rotary armature in proximity with said static armature; and electric current carrying means disposed on said shaft including rectifier means for rectifying the output of said rotary armature and applying the rectified current thereof to said field coils, whereby said static armature produces two phase AC electric power having square wave voltage and triangular current at the output thereof.
Claim 5
Dependent Claim
44 words
A generator system according to claim 2 further comprising second rectification means connected to said static armature for parametrically rectifying the output thereof, the output of said second rectification means comprising direct current power, the voltage and current of which includes substantially no ripple.
Claim 6
Dependent Claim
166 words
A rotary dynamo-electric machine comprising: a rotatable shaft; a rotary field structure disposed for rotation on said shaft, said structure including a slotted iron core and an electrical coil mounted in a substantially fluid tight can disposed in the slots of said core, said can having an aperture in each of two axially opposed ends thereof; a stationary annular conduit adapted to receive cooling fluid under pressure, said annular conduit having a plurality of fluid outlet apertures disposed in a radial plane thereof, said conduit disposed adjacent a first one of said ends of said coil structure in a manner so that fluid emanating therefrom impinges on said coil structure; and a plurality of vanes disposed on said coil structure in proximity with said aperture in a manner so that fluid emanating from said conduit impinges on said vanes, and said vanes, when rotating with said field structure, pumping said fluid through said coil structure to the aperture at the second one of said ends thereof.
Claim 7
Dependent Claim
166 words
A rotary dynamo-electric machine comprising: a rotatable shaft; a rotary field structure disposed for rotation on said shaft, said structure including a slotted iron core and an electrical coil mounted in a substantially fluid tight can disposed in the slots of said core, said can having an aperture in each of two axially opposed ends thereof; a stationary annular conduit adapted to receive cooling fluid under pressure, said annular conduit having a plurality of fluid outlet apertures disposed in a radial plane thereof, said conduit disposed adjacent a first one of said ends of said coil structure in a manner so that fluid emanating therefrom impinges on said coil structure; and a plurality of vanes disposed on said coil structure in proximity with said aperture in a manner so that fluid emanating from said conduit impinges on said vanes, and said vanes, when rotating with said field structure, pumping said fluid through said coil structure to the aperture at the second one of said ends thereof.
Claim 8
Dependent Claim
211 words
A rotary dynamo-electric machine comprising: an annular rotary shaft; a rotary exciter armature and a rotary generator field disposed for rotation on said annular rotary shaft; a pair of hollow, coaxial conductors disposed on the axis of said machine within the annulus of said shaft, the outer one of said conductors having holes therein to permit access to the inner one thereof, said conductors being rigidly disposed as a unit with said shaft and rotatable therewith; a plurality of diodes, each of said diodes having a first terminal of a first conductivity type and a second terminal of a second conductivity type, a first group of said diodes mounted to the inner one of said conductors and a second group of said diodes mounted to the outer one of said conductors, each diode connected to the inner one of said conductors having its first terminal connected thereto and each diode connected to the outer one of said conductors having its second terminal connected thereto; means electrically connecting each end of each coil in said armature to at least one of said first diodes and at least one of said second diodes; and electrical conduction means connecting said coaxial conductors to respective ends of a plurality of coils in said rotary field.
Claim 9
Dependent Claim
211 words
A rotary dynamo-electric machine comprising: an annular rotary shaft; a rotary exciter armature and a rotary generator field disposed for rotation on said annular rotary shaft; a pair of hollow, coaxial conductors disposed on the axis of said machine within the annulus of said shaft, the outer one of said conductors having holes therein to permit access to the inner one thereof, said conductors being rigidly disposed as a unit with said shaft and rotatable therewith; a plurality of diodes, each of said diodes having a first terminal of a first conductivity type and a second terminal of a second conductivity type, a first group of said diodes mounted to the inner one of said conductors and a second group of said diodes mounted to the outer one of said conductors, each diode connected to the inner one of said conductors having its first terminal connected thereto and each diode connected to the outer one of said conductors having its second terminal connected thereto; means electrically connecting each end of each coil in said armature to at least one of said first diodes and at least one of said second diodes; and electrical conduction means connecting said coaxial conductors to respective ends of a plurality of coils in said rotary field.
Claim 10
Dependent Claim
86 words
A rotary dynamo-electric machine rotor comprising: a slotted iron core; means comprising at least one rigid coil assembly mounted in the slots on said core, said coil assembly comprising a plurality of turns of a single conductor of circular cross section, said conductor consisting solely of a surface oxidized conductive metal, the oxide of said metal providing mechanically strong electrical insulation for said coil; and means for flowing a coolant fluid through the interstices between the respective turns of said coil assembly for cooling said conductor.
Claim 11
Dependent Claim
86 words
A rotary dynamo-electric machine rotor comprising: a slotted iron core; means comprising at least one rigid coil assembly mounted in the slots on said core, said coil assembly comprising a plurality of turns of a single conductor of circular cross section, said conductor consisting solely of a surface oxidized conductive metal, the oxide of said metal providing mechanically strong electrical insulation for said coil; and means for flowing a coolant fluid through the interstices between the respective turns of said coil assembly for cooling said conductor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |