Patent US3079497A successfully refreshed from Google Patents.
US4132914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Six-phase winding of electric machine stator
Assignee: Individual
•
Filing: 1976-10-15
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Granted: 1979-01-02
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Expires: 1996-10-15
Abstract
Abstract An arrangement in multiphase electrical machines in which a six-phase winding is provided with reduced maximum voltage between the terminals in the end portion. Three-phase windings are wound in opposite directions such that if one three-phase winding is wound clockwise, then the other three-phase windings is wound counterclockwise. The terminals of the three-phase windings are brought out at different sides of the stator. The winding reduces the highest possible voltage in the phase zone junction.
Inventors
- 👤 Garri M. Khutoretsky
- 👤 Alexandr I. Vorontsov
- 👤 Larisa A. Drozdova
- 👤 Boris S. Yanik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:00
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
A six-phase winding in an electric machine stator comprising: two three-phase windings electrically shifted relative to each other, through 30 electrical degrees, like phases of said three-phase windings being wound in opposite directions so that one three-phase winding is wound clockwise while the other is wound counterclockwise, each phase winding being wound in one direction, a like phase being wound in another direction so that directions of separate phase windings alternate, leadouts of the three-phase windings being brought out at different sides of said stator, said windings being shifted both electrically and spatially relative to one another by 30°, said six-phase winding being a two-layer winding of a stator in a turbo generator, said leadout being brought out at opposite sides of said stator, each phase of the winding occupying circumferentially two-phase zone, the entire circumference being divided in two twelve phase zones, each phase zone having three slots, groups of coils of one-phase lodged in different phase zones being connected in parallel, voltage prevailing between the twin bars at a phase zone joint being substantially equal to the phase voltage, the highest possible voltage at a a phase long joint of said six-phase winding being reduced substantially to the phase voltage.
Claim 2
Dependent Claim
202 words
A six-phase winding in an electric machine stator comprising: two three-phase windings electrically shifted relative to each other, through 30 electrical degrees, like phases of said three-phase windings being wound in opposite directions so that one three-phase winding is wound clockwise while the other is wound counterclockwise, each phase winding being wound in one direction, a like phase being wound in another direction so that directions of separate phase windings alternate, leadouts of the three-phase windings being brought out at different sides of said stator, said windings being shifted both electrically and spatially relative to one another by 30°, said six-phase winding being a two-layer winding of a stator in a turbo generator, said leadout being brought out at opposite sides of said stator, each phase of the winding occupying circumferentially two-phase zone, the entire circumference being divided in two twelve phase zones, each phase zone having three slots, groups of coils of one-phase lodged in different phase zones being connected in parallel, voltage prevailing between the twin bars at a phase zone joint being substantially equal to the phase voltage, the highest possible voltage at a a phase long joint of said six-phase winding being reduced substantially to the phase voltage.
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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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |