Current Control Method of Vehicle Permanent Magnet Synchronous Motor Based on Active Disturbance Rejection Control

Due to the frequently changing working conditions and complex operating environment of electric vehicle permanent magnet synchronous motor(PMSM), motor parameters change dramatically. However, performance PI current regulator, which is most widely used, sensitive has weak robustness, will lead deterioration control system performance. To address this problem, active disturbance rejection (ADRC) technology applied PMSM loop control. Firstly, traditional ADRC regulator designed, parameter tuning laws extended state observer are analyzed by method frequency domain analysis. Then, algorithm improved in three aspects: observation error compensation, utilization model information anti-windup. After that, simulations bench test validation performed. The simulation results show that more robust face changes. torque step fast dynamic response without overshoot high robustness when change. load, speed change, anti-windup measures designed can effectively overcome integral saturation phenomenon.