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US4132914A Expired / Lapsed US ⏱️ 0.0 years remaining

Six-phase winding of electric machine stator

Assignee: Individual
•
Filing: 1976-10-15
•
Granted: 1979-01-02
•
Expires: 1996-10-15
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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 19:01
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.

References Cited (Backward Citations)

US2783403A Cited
US3187245A Cited
US3214717A Cited
US3430126A Cited
US3462667A Cited
US3549919A Cited
US3629684A Cited
US3868564A Cited
US3739213A Cited
US3878415A Cited

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

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