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1. (WO2018022362) ELECTRIC MACHINE WITH STATOR HAVING EVEN SLOT DISTRIBUTION

Pub. No.:    WO/2018/022362    International Application No.:    PCT/US2017/042693
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Thu Jul 20 01:59:59 CEST 2017
IPC: H02K 1/16
H02K 3/48
Applicants: BORGWARNER INC.
Inventors: NEET, Kirk, E.
Title: ELECTRIC MACHINE WITH STATOR HAVING EVEN SLOT DISTRIBUTION
Abstract:
A multi-phase electric machine having plurality of windings are mounted on the stator core that define a plurality of phases wherein, for each phase, the windings include at least two parallel windings, each winding comprising a pair of continuous wires which are connected in series. For each pole, the parallel windings fill one or more central slots and two outer slots. Each winding fills each central slot twice the number of times that the winding fills each outer slot to thereby define a slot fill ratio of 2: 1 between central slots and outer slots and wherein each wire of the wire pair forming a winding fills the slots in a ratio that differs from the slot fill ratio. Phase shift end loops shift the windings from one outer slot to the other outer slot. Position change end loops alter the relative positions of the parallel windings.