RING-SHAPED COIL TYPE THREE-PHASE CLAW POLE TYPE PERMANENT MAGNET TYPE ELECTRIC ROTARY MACHINE

摘要

PURPOSE: To reduce the cost of a ring-shaped coil type three-phase claw pole type permanent magnet type electric rotary machine, to increase an output thereof, to lower vibrations thereof and to improve resolution thereof. ;CONSTITUTION: A stator S1 is formed by connecting and arranging three pairs of stator sections being formed in annular coils and exciting magnetic plates forming pairs of pole teeth consisting of M claw poles at regular pitches in the rotor axial direction, and a cylindrical type permanent magnet rotor, in which 2M N-poles and S-poles in total are magnetized at regular pitches alternately on the surface, is used as a rotor R1 rotatably installed at a regular inteval from the pole tooth groups of the stator S1. Three pairs of the stator sections are formed in such a manner that the pole teeth of each phase are positioned at the same position in the circumferential direction and three points on the rotor R1 oppositely faced to the central sections of three pairs of each stator S1 are displaced successively at every 60° at electrical angles in the rotor axial direction and the rotor R1 (skew magnetization at a phase difference angle) magnetized in a skew shape is mounted, and vibrations are lowered.;COPYRIGHT: (C)1995,JPO