Patent ID: 6922000
Filing Date: 2005-07-26
Classification: H02K

Abstract:
1. A rotary electric machine comprising: a stator core having a three-phase armature winding; an inductor rotor disposed opposite said stator core via a first air gap; a field coil; and a magnetic circuit means for magnetically coupling said rotor with said stator core via a second air gap, wherein: said inductor rotor comprises a plurality of magnetically conductive portions, a plurality of permanent magnets and magnetically non-conductive portions that are parallelly disposed in the circumferential direction thereof between said first air gap and said second air gap so as to change magnetic flux flowing through said inductor when said inductor rotates; and said plurality of permanent magnets is magnetized to increase magnetic flux flowing through said inductor; and said magnetic circuit means comprises a cylindrical portion around which said inductor rotor is disposed and a base portion around which said field coil is wound and said cylindrical portion and said base portion are contiguous. wherein said plurality of permanent magnets is disposed in the circumferential direction of said inductor rotor at two magnetic pole-pitches.