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介绍了同步电机静态变频器变频启动时3种转子位置测量方法(用转子位置传感器测量、用大轴编码器测量、直接测量定子电压)的原理,并分别对这3种方法进行了比较。结论认为采用直接测量定子电压的方式是目前同步电机变频启动过程中测量转子位置最好的方法。
This paper introduces the principle of three kinds of rotor position measuring method (measuring with rotor position sensor, measuring with big shaft encoder and measuring stator voltage directly) in frequency conversion starting of synchronous motor static frequency converter, and compares the three methods respectively. The conclusion is that adopting the method of directly measuring the stator voltage is the best method to measure the position of the rotor during the process of frequency conversion starting of a synchronous motor.