Patent ID: 11183890

Abstract:
A permanent magnet electric motor for a vehicle comprises a stator comprising a round wire defining N portions and a stator lamination defining an inner surface, N slots, and N/2 alternating, full-slot-width apertures in the inner surface, wherein the N portions of the round wire are disposed in the N slots, respectively, and a rotor comprising M permanent magnet assemblies defining M respective poles, each of the M permanent magnet assemblies comprising a pair or bar magnets arranged in a V-shaped configuration with respect to each other, wherein N equals 6 and M equals 4 or N and M equal respective double multiples thereof, and a rotor lamination having the M permanent magnet assembles disposed therein and defining, for each of the M permanent magnet assemblies, at least three sets of air pockets disposed proximate to the respective permanent magnet assembly.