Six-phase winding of electric machine stator
First Claim
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1. 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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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.
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Citations
1 Claim
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1. 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.
- 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°
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Current AssigneeAlexandr I. Vorontsov, Boris S. Yanik, Garri M. Khutoretsky, Larisa A. Drozdova
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Original AssigneeAlexandr I. Vorontsov, Boris S. Yanik, Garri M. Khutoretsky, Larisa A. Drozdova
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InventorsKhutoretsky, Garri M., Drozdova, Larisa A., Vorontsov, Alexandr I., Yanik, Boris S.
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Primary Examiner(s)Skudy, R.
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Application NumberUS05/732,641Time in Patent Office809 DaysField of Search310/179, 310/71, 310/180, 310/184, 310/189, 310/198, 310/200-208, 318/225 R, 318/225 A, 321/7, 321/26US Class Current310/184CPC Class CodesH02K 3/28 Layout of windings or of co...
