基于dSPACE的永磁同步电机低速无位置传感器控制系统

Low speed sensorless control system of permanent magnet synchronous motor based on dSPACE

在高性能的电气传动系统中,永磁同步电机因其特有的优势而被广泛的应用,传统的机械式传感器已不能满足控制系统的要求,而无位置传感器控制技术能消除机械传感器带来的不足。本文首先对脉振高频信号注入法进行理论分析,设计出PMSM位置与速度估计系统;其次,采用高频信号注入无位置传感器方法,在MATLAB/Simulink中搭建无位置传感器控制系统模型并仿真;最后,在设计的基于dSPACE的永磁同步电机控制系统上验证了零低速无位置传感器方法。仿真及实验结果表明了脉振高频信号注入低速无位置传感器控制系统具有良好的运行效果。

In the electric drive system of high performance,permanent magnet synchronous motors（PMSM）have some unique advantages and are widely used.Traditional mechanical sensors have been unable to meet requirements of the control system.A novel sensorless control method can eliminate shortages of mechanical sensors.In this paper,the theoretical analysis of a high frequency signal is firstly designed,and the position and the speed estimation system are designed.Secondly,the simulation model of the sensorless control system has been built by using high frequency signal injection method,and the simulation experiment has beeb done.Finally,experimental tests have been carried out on a prototype based on dSPACE system.Simulation and experimental results indicate that the prototype has high feasibility and validity,agood dynamic,static performance and the maintenance.