P : electrical most of the requirements see above " 5 " P :电机的极对数请见项“五” 。
Change pole motor 变极电动机极对数可变
About the rotor , the rotor structure , the pm material characteristics , the option of the pole pairs and the shielding are analyzed 转子方面,主要对转子结构、永磁材料性能、极对数选取、防护罩性能等方面进行了研究。