Title :
A new current controller of three-level rectifier by H∞ optimization
Author :
Su, Weifeng ; Liu, Congwei ; Sun, Xudong ; Li, Fahai
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
Current control strategy is a key step in the control of rectifiers. Based on the discrete modeling of current control of rectifier, a novel current controller designed by discrete H∞ optimization is presented in this paper, which can minimize the effect of parameter variation and control period. The simulation and experimental results show that the novel controller operates robustly with parameters variation, and also produces better dynamic performance in various control periods, compared with classic PI controller and cross-coupling controller.
Keywords :
AC-DC power convertors; H∞ control; control system analysis; control system synthesis; discrete systems; electric current control; rectifying circuits; robust control; H∞ optimization; control design; control period; control simulation; discrete modeling; dynamic performance; parameter variation; parameters variation robustness; three-level rectifier current controller; Closed loop systems; Design optimization; Equivalent circuits; Power system modeling; Reactive power; Rectifiers; Robust control; Sun; Transfer functions; Voltage control;
Conference_Titel :
Electric Machines and Drives Conference, 2003. IEMDC'03. IEEE International
Print_ISBN :
0-7803-7817-2
DOI :
10.1109/IEMDC.2003.1210691
