Advanced Dynamic Voltage Restorer with Minimal Energy Control

Dynamic voltage restorer with minimal energy control strategy can reduce the consumption of active power , but it will bring the phase jump to load . This paper propose an advanced DVR topology structure that by parallelling with a TCR/TSC compensator at load side, it overcome the phase jumpe problem which it bring by traditional minimal energy control. According to the proposed DVR topology structure, firstly draw the phasor relationship chart of DVR injected voltage and the TCR/TSC ´s current , and it also deduced the mathmatical formulas between them. Secondly ,it adopt s-function to decide DVR work or not. Finally, the simulation results illustrate the effectiveness of the method in this paper , and it make a comparation between the method proposed in this paper and the traditional minimal energy control method in terms of the active power consumption.