新型同步磁阻电机电感参数的测量

Measurement for Inductance Parameter of New-style Synchronous Reluctance Motor

本文在介绍了应用直接负载法测量同步磁阻电机交、直轴电感原理的基础上,提出了一种利用光电脉冲编码器精确测量电机稳态运行时电压合成矢量与转子d轴的夹角,并结合相关公式,计算求得交、直轴电感值的方法。该方法对同步磁阻电机交、直轴电感的测量有较高的准确度。样机试验检测了同步磁阻电机在不同负载下的交、直轴电感值,并与有限元仿真计算的结果进行比较,两者比较吻合,验证了这种方法的可行性和准确性。

Based on the measurement principles of the direct and quadrature axis inductances of synchronous reluctance motor with direct load method. The paper proposes a method to measure intersection angle between synthesizing voltage vectors and rotor d axis with photoelectric encoder and then to calculate direct and quadrature axis inductances value in combination with the relative equations. The method has relative high precision of measurement for direct and quadrature axis inductances of synchronous reluctance motor. The experiment for the direct and quadrature axis inductances values of the prototype under the different loads is made. Test results are compared with the values of finite element simulation of the same motor and results are identical, so the method is proved to be feasible and precise.