Design and Simulation on a Novel UPQC Topology & its Control Strategy

A novel single-phase Unified Power Quality Controller (UPQC) topology is proposed in this paper, which can effectively solve some kinds of power quality problems from the load or from the power side. The new topological structure of single-phase UPQC and its working principle are introduced firstly. Then, the control methods especially for the load voltage compensation and grid harmonic current compensation are discussed. Finally, simulation models are built up with SimPower Systems Blockset of MATLAB/SIMULINK and results verify the effectiveness of this new topology and control strategy.