Slanted and saw-toothed stator poles for improved performance of doubly salient permanent magnet motor - art. no. 10Q514

摘要

This paper presents the results of extensive finite element analyses conducted on doubly salient permanent magnet motor (DSPM) for improving the torque characteristics by novel methods; namely (i) slanted stator pole and (ii) saw-toothed stator pole. In the first method, stator poles are given a slant at the pole face; the slant in a direction opposite to the rotation of the motor has resulted in 7.33 and 71.45 increase in the average and maximum torques, respectively, when compared with the motor with original stator poles. With appropriate saw-tooth shaped stator poles, various permanent magnet torque and static torque profiles can be achieved. (c) 2005 American Institute of Physics.