Review of dq Axis Current Decoupling Strategy for Permanent Magnet Synchronous Motor
This paper summarizes the control methods of dq axis current decoupling for permanent magnet synchronous motor(PMSM),analyzes the thought source,thread system and evolution process,and demonstrates the decoupling nature and internal relations of various decoupling methods.From a global and local perspective,this paper establishes a thinking framework about the decoupling problem.The decoupling methods are classified into three categories:diagonal decoupling,anti-interference decoupling and inverse dynamic decoupling,which reflects the trend of the reduced model dependence,robustness enhancement,and the complexity of algorithm,as well as shows the sign of the transition from model theory to cybernetics.This paper also discusses the robustness of various decoupling control methods under the condition of parameter uncertainty.It is pointed out that combining the decoupling method with advanced control algorithm,disturbance observation method,system identification method and artificial intelligence method,and making full use of known model information are beneficial to improving the effect of dq axis current decoupling,enhancing the robustness of the system,reducing the design difficulty and parameter tuning requirement of single observer,controller and filter,and even achieving the global optimum of the system.Finally,the paper prospects the key technologies,applications and development of dq axis current decoupling in PMSM.
permanent magnet synchronous motor(PMSM)current decouplingrobustnessobservertransfer function
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万方数据
维普
