摘  要：提出了一种提高交流主轴伺服电动机恒功率运行最高转速的设计方法。这种设计方法就是把提高交流主轴伺服电动机恒功率运行最高转速转变为提高交流主轴伺服电动机最大转矩倍数。论文把这种方法应用于二种规格交流主轴伺服电动机的电磁方案设计，同时给出了Ansoft电机快速设计软件的有关仿真结果。仿真结果表明，该文提出和采用的方法具有明显实际效果。
关键词：交流主轴伺服电动机；恒功率最高转速；最大转矩；Ansoft RMxprt

Abstract: This paper presented a method to extend the speed of AC spindle motors at constant outputs. The maximum torque of an AC spindle motor was increased so as to extend the speed. The method was used to design two types of the AC spindle motors, and Ansoft RMxprt was employed to simulate the characteristics，which demonstrate that the method is significant and useful.
Key Words: AC spindle motor; Maximum speed at constant output; Maximum torque; Ansoft RMxprt