关键词: 内置式永磁同步电机, 高频信号注入法, 电感辨识, 纯延时滤波器

Abstract: In order to improve the identification accuracy of the inductance parameters of the interior permanent magnet synchronous motor when running at low speed and zero speed, an interior permanent magnet synchronous motor model considering the saturation of magnetic circuit and the influence of cross-coupling was established. Under the condition that other parameters are unknown, the high-frequency voltage signal injection algorithm was used to analyze the high-frequency response currents extracted by the pure time-delay filter, and the inductance of d-axis and q-axis was obtained. The simulation results showed that the method was effective and the robustness of the system was improved when inductance parameters change.