基于HPSO的三相PWM整流器ADRC参数整定

HPSO-based ADRC Parameter Tuning of Three-Phase PWM Rectifier

三相PWM整流器采用电流内环、电压外环的控制方式,将电压外环的PI控制器替换为自抗扰控制器ADRC使得输出的电压稳态精度更高、动态性能更优异。然而在Simulink软件中进行控制参数整定时,ADRC控制参数过多导致PSO对于多极值问题容易收敛到一个局部最优解,需要多次仿真,从而降低了整定效率。混合粒子群算法HPSO虽然相对于PSO收敛速度慢,但是可以很好地解决PSO收敛到局部最优解的问题。仿真结果验证了HPSO具有较强的全局和局部寻优能力,且整定的参数相对于PSO能使系统获得更好的动态性能。

Three-phase PWM rectifier adopts control mode of current inner loop and voltage outer loop.The PI controller of voltage outer loop is replaced by active disturbance rejection controller ADRC,which increases steady-state accuracy of output voltage and improves dynamic performance.However,when tuning control parameters in Simulink software,PSO is easy to converge to a local optimal solution for multi-extremum problems due to excessive ADRC control parameters,which requires multiple simulations and thus reduces efficiency.Hybrid particle swarm optimization(HPSO)has a slow convergence rate compared with PSO,and can well solve the problem of PSO converging to the local optimal solution.The simulation results verify that HPSO has strong global and local optimization ability,and the tuning parameters can make the system obtain better dynamic performance compared with PSO.