| 摘要 |
PROBLEM TO BE SOLVED: To provide field magnet type rotary electric equipment which effectively reduces cogging torque by precisely relating the number of stages and the shifting angle and suppressing occurrence of a counter electromotive force in a rotor which is made into a multistage skew structure through division of the rotor core axially into two or more stages and coupling each stage by shifting it in the circumferential direction. SOLUTION: In this field magnet type rotary electric equipment, where the rotor core 1 mounted on a rotor shaft is divided axially into n stages and several core split bodies 1a, 1b, and 1c are mounted, being shifted byθ°about its axis, the shift angleθis given byθ=360°/(A×n), where A is defined as the least common multiple between the number of slots and the number of poles. COPYRIGHT: (C)2004,JPO&NCIPI |
