Sliding Mode ADRC Control Strategy for Three-Phase Vienna Rectifier

Abstract

Vienna rectifier is a nonlinear, strong coupling, multi-variable system. In order to improve the static and dynamic response of the Vienna rectifier output voltage performance, this paper adopts the combination of sliding mode and the ADRC(auto-disturbance rejection control) control strategy in the voltage outer loop. When the system is started, the output voltage can quickly track the given value without overshoot. When the load is switched, the output voltage fluctuates less and can quickly recover to the given value, which improves the anti-interference ability of the system. Simulation results verify the accuracy and effectiveness of the proposed control strategy.