A New Approach of DVR Control with Minimised Energy Injection

A new controller for a dynamic voltage restorer (DVR) is proposed in this paper. The controller allows minimisation of DVR injected active power, and stabilisation of DC side voltage. It allows also recharging a DC side using no extra recharging circuit. The controller works according to the progressive phase advance strategy, and since it does not require complicated numerical computations, the controller unit is very simple. Simulation results of a single-phase numerical model are presented in the paper. It has been shown that a DVR controlled according to the presented solution works satisfactorily