Patent ID: 9203289
Filing Date: 2015-12-01
Classification: H02K

Abstract:
1. A stator of a rotary electric machine with a plurality of poles, comprising: a stator core having teeth that define therebetween a plurality of slots; and polyphase coils provided in the slots, each phase of the polyphase coils having a plurality of coils that are formed for each pole and connected in parallel, wherein when winding in which a coil pitch is equal to number of the slots divided by number of the poles is termed full-pitch winding, when winding in which a coil pitch is larger than the coil pitch of the full-pitch winding is termed long-pitch winding, and when winding in which a coil pitch is smaller than the coil pitch of the full-pitch winding is termed short-pitch winding, at least two of the coils of each phase are formed on the stator core by wave winding so as to alternate between the long-pitch winding and the short-pitch winding along a circumferential direction of the stator core, wherein each of the coils connected in parallel is provided by a seamless conducting wire and has a pair of lead wires extending from portions that form the short-pitch winding, length of at least one of the paired lead wires being the same or smaller than length of the coil pitch of the short-pitch winding.