The PR Control with Load Current Feed-forward for Vienna Rectifier

The traditional PI control of the VIENNA rectifier is difficult to track zero-error of the AC side and it is slowly to track the dynamic response of the DC side. In order to achieve zero-error control of the AC side, the proportional resonant (PR) controller is applied in the Vienna rectifier current loop, and the system's anti-jamming capability and fast performance are improved by introducing load current feed-forward control. The analytic expression of feed-forward function is derived, the influence of feed-forward factor on the dynamic response of the system is analyzed, and the selection basis of feed-forward factor is given. The simulation and experiment results show that the scheme boasts validity and correctness.