频域法辨识同步机参数

Identification of parameters of synchronous machine by frequency response tests

提供和比较了静态频率响应法（ＳＳＦＲ）和在线频率响应法（ＯＬＦＲ）两种测定同步机参数的方法。两种方法都能提供ｄ轴和ｑ轴的参数，并都经过实验验证，ＳＳＦＲ方法简单易行，获得的数据与设计值接近。ＯＬＦＲ法先进、可靠；由于考虑了饱和与转子阻尼等影响，其参数更接近于实际运行工况时的结果。

Two new methods for determination of parameters of synchronous machines havebeen presented and compared in this paper. One of the methods is standstill frequency response test (SSFR). Another is on-line frequency response test(OLFR). Two tests providecomplete data for both the direct and quadrature axes by the test in the laboratory. The SSFR test method is simple and esay to be performed. It shows that the parameters obtainedfrom SSFR are generally targer than those from OLFR. The parameters are more close tothe design values. The results from OLFR test consider the saturation effect and rotor'sdamping effect and, therefore, the parameters are more close to those during actual operation.