Patent ID: 6541887
Filing Date: 2003-04-01
Classification: B60K,B60W,H02K,Y10S

Abstract:
A motor-generator with a voltage stabilizer, comprising a multipolar permanent-magnet rotor mounted on a rotor shaft supported for rotation in a stator housing, a stator fixed to the housing with arranged around the rotor, and electromagnet coils fixed to axially opposing ends of the housing, each to each end, in opposition to axially opposing ends of the rotor, wherein the rotor is composed of a cylindrical magnetic path arranged around the rotor shaft and extended axially to areas confronting the electromagnet coils, a permeable member surrounding around the cylindrical magnetic path, and a permanent-magnet member of more than one permanent-magnet piece extended axially and arranged circumferentially around an outside periphery of the permeable member with N- and S-poles on either piece alternating in polarity circularly around the rotor, and wherein the cylindrical magnetic path includes an N-pole annular portion arranged confronting any one of the electromagnet coils, N-pole electromagnet magnetic paths stemming from the N-pole annular portion in opposition to the N-poles of the permanent-magnet pieces, an S-pole annular portion arranged confronting another of the electromagnet coils, and S-pole electromagnet magnetic paths stemming from the S-pole annular portion in opposition to the S-poles of the permanent-magnet pieces, the N-pole and S-pole electromagnet magnetic paths alternating in polarity circularly around the permanent-magnet member with nonmagnetic pieces being each interposed between any two adjacent electromagnet magnetic paths.