Patent ID: 6703744
Filing Date: 2004-03-09
Classification: H02K

Abstract:
A generator-motor for generating electric power and starting an engine of a vehicle including a rotor to be connected to the engine and having a rotor core and a plurality of permanent magnets and a stator having a stator core and an armature winding disposed in said stator core; whereinsaid rotor core has a plurality of axially extending through-holes disposed at equal intervals in a circumferential direction thereof to accommodate said permanent magnets and to increase circumferential magnetic reluctance thereof thereby forming a plurality of auxiliary pole portions between said through holes; said stator core has a plurality of teeth radially extending at equal intervals in a circumferential direction to face said rotor core; and each of said auxiliary poles has a circumferential width that is 30%-55% of a circumferential width of each of said teeth.