摘要
研究了基于脉振高频信号注入法的永磁同步电机无传感控制,采用二次谐波法对转子极性进行辨识,以提高算法的收敛性。并基于Matlab/Simulink对永磁同步电机脉振高频注入法速度和电流双闭环控制进行了仿真。结果表明:小凸极比的PMSM转子位置解调困难、转矩抖动较大,因此在使用脉振高频电压注入法时,选取凸极比大的PMSM能够取得较好的控制效果。
By adopting the high frequency pulse injection method, a research has been conducted on the sensorless control of permanent magnet synchronous motors. The method of quadratic harmonics is used to identify the rotor polarity in order to improve the convergence of the algorithm. Based on Matlab/Simulink, a simulation test has been carried out of the high frequency injection method of PMSM, double loop speed and current closed loop control. The results show that the rotor position of PMSM with small saliency ratio is diffcult to demodulate, with a great jitter in the torque. Therefore, when the pulse frequency injection method is used, the PMSM with higher saliency ratio will be able to achieve a better control result.
出处
《湖南工业大学学报》
2017年第6期20-25,共6页
Journal of Hunan University of Technology
关键词
永磁同步电机
脉振高频信号注入法
凸极比
二次谐波法
permanent magnet synchronous motor （PMSM）
fluctuating high-frequency carrier signal injection method
saliency ratio
method of quadratic harmonics
