永磁体助磁的双转子双鼠笼异步电机研究

摘要

Aiming at the low power factor of asynchronous motor, a novel type of motor—the dual-rotor permanent magnet induction motor ( PMIM) with double squirrel cage was studied. The basic structure and working principle of the motor was introduced, the structure of the double squirrel cage was innovatively designed and the influence of the yoke thickness on the performance of the motor was analyzed. Then the finite element method was used to simulate the motor, the PMIM with single squirrel cage and the common induction motor respectively. The starting ability, efficiency and power factor were studied by comparing the running state of the three kinds of motor under different load. The simulation results indicate that compares with the common induction motor and the PMIM with single squirrel cage, the PMIM with doub-le squirrel cage has higher power factor and efficiency. And it also has better starting performance than that with single squirrel cage.%针对异步电机功率因数低的问题,对一种新型电机—永磁体助磁的双转子双鼠笼异步电机进行了研究.介绍了该电机的基本结构和工作原理,创新性地采用了双鼠笼的结构,并对笼间磁轭厚度对电机性能的影响进行了分析.利用有限元分析方法对该电机和双转子单鼠笼异步电机及普通异步电机分别进行了仿真分析,通过比较3种电机在不同负载下的运行状况来研究电机的起动能力和稳态运行性能.仿真研究结果表明,永磁体助磁的双转子双鼠笼异步电机较双转子单鼠笼异步电机和普通异步电机具有更高的功率因数和效率,较双转子单鼠笼异步电机具有更好的起动性能.