统一电能质量调节器H∞控制器设计研究

In allusion to the low-robustness of Unified Power Quality Conditioner(UPQC) using routine control methods at present, this paper adopts a unified math model, which contains electric power and load, to design an H∞- controller. In this design, the robust stability problem of UPQC system is converted to a standard H∞-control problem for a linear dynamic output feedback rule. The theoretically analysis and emulation result shows, the H∞-control method can effectively carry out the synthetically compensate function of UPQC and get preferable control effect in improving power quality.