Design of a High Dynamic Performance Voltage Compensator for Diode Rectifiers

Series voltage compensation effectively improves the voltage quality of diode rectifiers, particularly in reducing high-frequency ripples, but the voltage quality can be seriously affected under dynamic operating conditions. To address this issue, dead beat control strategy with fast dynamic response capability is proposed and applied to series compensated voltage control. Based on the mathematical model of the compensator and the sampled values of circuit state variables at the current moment, the controller can control the output voltage quickly. And the accuracy of the controller is also improved by identifying the parameters of the capacitors and inductors in the circuit. A simulation model is established to verify the compensation effect of the compensator and the dynamic performance of the deadbeat control strategy.