永磁同步电机单闭环自抗扰控制策略研究

Research on Single Closed Loop Active Disturbance Rejection Control Strategy of Permanent Magnet Synchronous Motor

针对传统永磁同步电机的控制驱动系统转矩脉动大、参数整定困难、鲁棒性差等缺点,提出一种基于自抗扰控制器转速单闭环直接转矩控制系统,将自抗扰控制器的输出直接作为系统期望转矩角正弦值,简化了系统结构,提高了系统的鲁棒性,设计编排了空间电压矢量调制算法流程,减小电机输出的转矩脉动,通过对比仿真实验证明了设计方法的合理性和有效性。

Aiming at the disadvantage of permanent magnet synchronous motor＇s torque control （DTC） system has large torque and its parameters are difficult to set. To solve these problems, a rotate speed single closed loop DTC system was proposed based on auto disturbance rejection controller which directly regards the output of the auto disturbance rejection controller as the system＇s expected torque angel to simplify the structure of the system. A voltage space vector flow modulation algorithm was designed, which reduced the torque. The method was proved to be correct by the simulation.