Patent ID: 7459821
Filing Date: 2008-12-02
Classification: H01F,H02K

Abstract:
1. A permanent magnet assisted synchronous reluctance motor, comprising; a stator, on which coils are wound; a rotor rotatably installed within the stator; a plurality of flux barriers comprising outer flux barriers formed in outer portions of the rotor and inner flux barriers formed in inner portions of the rotor, wherein the outer flux barriers and inner flux barriers are formed along a radius of the rotor, wherein centers of the inner flux barriers are provided radially inward of centers of the outer flux barriers with respect to a central axis of the rotor; magnets inserted within corresponding outer openings defined by the outer flux barriers; and bridges are formed which traverse corresponding inner openings defined by inner flux barriers so that corresponding routes for magnetic flux are formed extending between opposing magnets inserted in the outer openings when the coil imposes a magnetic force on the magnets, wherein the magnets are inserted within first and second sides of each of the outer flux barriers, and the bridges are provided at first and second sides of each of the inner flux barriers at positions corresponding to the positions of the magnets, and wherein center portions of the outer flux barriers are empty, and wherein all the space of the inner flux barriers, excluding the bridges, are empty.