Armature winding for a dynamoelectric machine

Abstract

Abstract A dynamoelectric machine having a generally cylindrical armature, the armature having a core including a plurality of slots in the circumferential edge thereof, in which a plurality of coils are wound in a plurality of poles and phases, the coils having a plurality of separate individual strands, wherein the strands of the coils are overlapped in a plurality of levels with each strand being transposed along the length of the coils in relation to the other strands such that they are transposed in the slot sections by an angle of substantially 360 degrees divided by the number of segments or strand groups over which the strands are to be transposed, and are reverse transposed at the end connecting portions by an angle of substantially 360 degrees divided by twice the number of segments or strand groups over which the strands are to be transposed, such that a total transposition substantially equal to 360 degrees will be achieved across all the segments or strand groups, whereby even in devices with short armature cores, or a large number of strand levels, circulating currents between the strands can be effectively suppressed, and whereby the work of physically effecting the transposition is simplified, requiring less time and lower cost than prior modes of transposition.

Inventors

• 👤 Shigetaka Kawai

Bibliographic Details