RESEARCH ON SYNCHRONIZATION DEADBEAT CONTROL ALGORITHM FOR UNIFIED POWER QUALITY CONDITIONER

This paper presents a novel Control Algorithm for Unified Power Quality Conditioner. The proposed algorithm treats the series inverter and the parallel inverter of UPQC as a unified unit, the reference of both part are simultaneously computed. To be digitalized and compensate the delay caused by a great deal of computation, deadbeat control and SVM (Space Vector Modulation) are employed to control the switch of UPQC so that the compensated current and the compensated voltage of UPQC are been exactly equal to its reference. A reduced order predictive state observer is used to reduce the number of sensors. The robustness of the deadbeat control algorithm is also discussed in this paper. The simulation results verify the viability and effectiveness of the control algorithm.