基于PM RSM模型解耦的电流控制器性能研究

Current controller design and performance based on PM RSM model decoupling

永磁同步磁阻电机(PM RSM)是一个多变量、非线性、强耦合的控制对象,即使在同步坐标系下对电机的磁场电流和转矩电流进行解耦,也无法实现d轴电压直接控制d轴电流,q轴电压直接控制q轴电流.通过在电机中添加控制模块,把速度电压和互感项去掉,将交直轴分量的控制转化成两个独立通道的控制系统,实现电机本体解耦,并在此基础上,设计一种电流控制器,应用于PMRSM的电流控制中.仿真结果表明,该电流控制器具有较好的鲁棒性和动态响应性能.

The PM RSM（permanent magnet reluctance synchronous machine） is a controlled object of multi-variable,nonlinearity and strong coupling.The fact that d-axis current can be controlled by d-axis voltage directly,same as the q-axis current,can not be realized even if the field current and torque current have been decoupled in the synchronous coordinates.The speed voltage and mutual inductance voltage are subtracted in the machine model proposed.Therefore,the control of d and q axis components is changed to single-loop independent control system,to realize the decoupling for the electrical model,and based on the method,a current controller is designed,which is applied to the current control of PM RSM.The result from simulation shows that it is of high performance of dynamic and robustness.