基于MRAS的PMSM无传感器矢量控制研究

Research on Speed Sensor-less Vector Control of PMSM Based on MRAS

通过对模型参考自适应(MRAS)理论的研究,设计了一种基于MRAS理论的高精度永磁同步电机无速度传感器矢量控制算法。借助Matlab/Simulink工具对此控制系统进行了仿真研究,得到了与理论分析一致的仿真波形。为进一步检验控制策略的可行性,在额定功率为2.2 k W、型号为SMTP100L1-50-22-4的永磁同步电机上进行验证实验,并与有速度传感器矢量控制相对比。实验结果表明,基于MRAS理论的无速度传感器控制可以替代光电编码器,很好地完成电机调速。

The precision speed sensor-less vector control algorithm based on model reference adaptive theory （MRAS） for permanent magnet synchronous motor （PMSM） was presented through the study of MRAS. The control system was simulated using Matlab/Simulink, and the emulational waves turned out to be consistent with the theory analysis. Verification test had been accomplished on a PMSM with the rated power of 2.2 kW, in the type of SMTP100L1-50-22-4, compared to the speed sensor vector control. The result indicates that the speed sensor-less control theory based on MRAS can replace optical encoder with a good performance for motor speed control.