基于内模控制的双闭环PWM整流器

传统的双闭环PWM整流器设计中常常采用常规PID调节方式来进行控制,但是由于PWM整流器具有非线性等特性,在较大的扰动情况下,使用PID调节方式较难以得到满意的调节效果。根据内模控制原理,针对双闭环PWM整流系统设计了一种内模控制器,取代了常规的PID调节器,优化了PWM整流系统。理论分析和试验结果表明,内模控制器能使系统获得优良的动态和静态性能,而且设计方法简单,控制器容易实现。

Double Closed-loop PWM Rectifier based on Internal Model Control

Double closed PWM rectifier is regulated by PID regulator in traditional design,because of the non-linear char-acter of PWM rectifiers,especially with the bigger interference the PID regulator couldn't achieve satisfactory results.This paper develops the design method of current regulator and voltage regulator based on internal model control(IMC) instead of normal PI adjustor,and this method is applied to regulators design for double closed-loop PWM rectify control system.The theory analysis and simulation results demonstrate the regulator based on IMC is convenient and efficient.