A new method to detect rotorcage fault of induction motor is presented, which monitors if the output power signal comprises a direct component and an alternating component or only a direct component.
In order to improve its starting performance, we derivated the calculating method of this kind of motor with double cagerotor and analysed its starting process.
为改善起动特性，还对双鼠笼转子的计算进行了推导，分析了整马力单相步电动机的起动过程。
3
The magnetic coupling function and equivalent relationship between reluctance rotor and cagerotor have been analyzed.