自抗扰技术的电动汽车用永磁同步电机控制

Permanent Magnet Synchronous Motor Control in Electric Vehicle Based on the Auto-Disturbance Rejection Controller

为抑制负载、摩擦力矩和转动惯量的变化对永磁同步电机(PMSM)速度伺服系统的影响,将以上参数的变化视为伺服系统的扰动量,推导出速度环自抗扰控制的控制策略,并将其应用在电动汽车驱动上。基于MatLAB的仿真提出的自抗扰控制器均具有更好的动态和静态特性,能很好地实现额定转速以内的恒转矩运行和额定转速以上的恒功率运行。

In order to restrain the disturbances in PMSM control method based on ADRC techniques is presented servo drive caused by the changes of load, friction and rotor inertia, a speed Based on ADRC, these parameter changes are regarded as disturbances of the related loop in PMSM servo system. Then the ADRC is applied into the electric vehicle. The MatLAB simulation results show that the servo system has good static and dynamic response characteristics. And the constant torque within the rated speed and the constant power beyond the rated speed are achieved.