鼠笼异步电机起动性能的时步有限元计算

Transient starting performance of squirrel cage induction motor with time-stepping FEM

时步有限元方法是计算鼠笼异步电机暂态起动特性的一种有效方法,本文针对当前该方法在工程应用中存在的问题展开了研究。在转子转动的处理方面,通过对现有方法进行改进,得到了一种新的处理有限元运动问题的方法——边界耦合法,解决了现有方法存在的效率低、通用性不强和时间步长不确定等问题。本文还讨论了转子电路方程的建立和电磁转矩计算等方面的问题。

The time-stepping FE method is used for calculating the transient starting performance of the squirrel cage induction motor. The existing method to deal with the rotor's movement is improved. In the new method, efficiency, universal property and time-step size have all been increased. The circuit equation of the squirrel bar and the calculation of the electromagnetic torque are studied also.