基于改进静止频率响应试验的同步电机参数辨识

针对同步电机参数辨识问题，以全电流为状态变量，研究同步电机d、q轴磁链与定子电流及励磁电压的关系，建立电机的数学模型。通过分析静止频率响应试验曲线，获得不同频率下各测试参数的增益和相位，替换d、q轴电磁参数特性传递函数方程中的相关部分，简化电机数学模型及其状态空间方程。基于励磁和定子回路开路时电机状态的分析结果，改进数据处理过程，辨识电机参数，对比采用其它方法测取的结果，有较好的一致性，所提参数辨识方法的有效性得以验证。

Magnetic Parameter Estimation of Synchronous Machine Based on an Enhanced Standstill Frequency Response Test

In order to identify the parameters of synchronous machine, the relationship between the d, q-axis flux and stator current and excitation voltage were studied, the model of synchronous machine was built by using current as variables. The gain and phase of different parameters with range frequencies were obtained by analyzing the standstill frequency response curves. The model and the state-space equations of synchronous machine were simplified with the gain and phase to replace the relevant term in characteristic transfer functions which represented d, q-axis electromagnetic parameters. The experimental data process method was improved and the parameters of the machine were identified based on the status analysis of the machine at the open field winding and the open stator winding. The parameters have a good consistency to the measured parameters with another test method, and the effectiveness of the proposed parameter identification method is verified.