Patent ID: 7288910
Filing Date: 2007-10-30
Classification: H02K,H02P

Abstract:
1. A motor system comprising: a stator, the stator having at least a first and a second multiphase winding, the first and second windings being electrically isolated from one another and non-interlaced with one another, the first and second windings occupy non-overlapping sector segments of the stator; a rotor mounted for movement relative to the stator about an axis, the rotor having at least one permanent magnet mounted thereon; a drive circuit including a power source and a commutation circuit, the drive circuit electrically connected to at least the first winding to, in use, provide electricity to the first winding to rotationally drive the rotor about the axis; and a rotor position recognition circuit connected to the second winding, the rotor position recognition circuit adapted to, in use, determine rotor position based on an electricity induced in the second winding when the rotor passes the second winding, the rotor position recognition circuit connected to the drive circuit for providing feedback information to the drive circuit regarding said determined rotor position.