基于改进自抗扰控制的非对称六相双永磁同步电机串联系统控制

针对PI控制器存在的超调及跟踪速度慢的问题,以非对称六相永磁同步电机(PMSM)双电机串联系统为研究对象,采用自抗扰控制(ADRC)替代传统PI控制进行速度补偿,提高系统的抗干扰能力。基于传统自抗扰模块多参数整定的复杂性,引入遗传算法对其参数寻优,以最小超调量为优化判据通过交叉迭代的方式改进ADRC调节器。搭建基于改进ADRC的非对称六相双PMSM串联系统,并进行仿真。结果表明:与传统PI控制相比较,所用方法具备快速调节性能和精确的跟踪效果,同时可以削弱谐波电流的影响和转矩脉动,验证了所提控制策略的实用性。

Control of Asymmetric SixPhase Dual Permanent Magnet Synchronous Motor Series System Based on Improved ADRC

When using PI controller, overshoot of speed was prone to occur during the motor startup process. To solve the problems of overshoot and slow tracking in the startup process of series multiphase motor system, an improved active disturbance rejection controller (ADRC) to substitute PI controller in the series system of asymmetric sixphase dual permanent magnet synchronous motors (PMSMs) was studies. Then, the genetic algorithm was introduced to optimize the module parameter of proposed method by optimization criterion of minimum overshoot. Finally, an asymmetric sixphase dual PMSM series system based on improved ADRC was built in MATLAB/Simulink. The simulation results showed that the method used had fast adjustment and accurate tracking effect, compared with the traditional PI control. In the meantime, the influence of harmonic current and torque ripple could be well weakened. All of these verified the practicability of this control strategy.