Patent ID: 7521832
Filing Date: 2009-04-21
Classification: B60L,H02K,Y02T

Abstract:
1. A permanent magnet electric rotating machine, comprising: a stator; a rotor having a rotor iron core and being arranged opposite said stator with a rotation air gap therebetween; a plurality of magnetic poles in said rotor iron core and arranged in a peripheral direction of said rotor in which polarity is alternately arranged; a plurality of auxiliary magnetic pole portions arranged in the peripheral direction between said magnetic poles; and bridge portions which connect magnetic pole piece portions formed between said magnetic poles and a surface of said rotor with said auxiliary magnetic pole portions, wherein each said magnetic pole has two permanent magnets of common polarity and in a V-shape arrangement opening towards said stator, a core portion of said rotor iron core and a first magnetic gap are provided between each of the inner ends of said two permanent magnets, said core portion being provided to connect said magnetic pole piece portions with said rotor iron core radically inward of said magnetic poles, and second magnetic gaps are provided between outer ends of said two permanent magnets and said bridge portions.