Title :
A control method of three-level PWM rectifier under the imbalanced three-phase grid voltage
Author :
Zhou, Jinghua ; Hou, Qingliang ; Zhang, Xiaowei ; Li, Zhengxi
Author_Institution :
Power Electron. & Motor Drives Eng. Center, North China Univ. of Technol., Beijing, China
Abstract :
To help the three-level PWM rectifier maintain good performance when the three-phase grid voltage is imbalanced, this paper analyzes the influence of grid voltage imbalance on the input current and the output voltage of PWM rectifier. On the basis of analyzing the instant reactive power and active power of the system, this paper adopts a method of the dual current regulations to control the imbalance; meanwhile, this control method has been tested and verified by computer simulation.
Keywords :
Harmonic analysis; Power harmonic filters; Pulse width modulation; Reactive power; Rectifiers; Voltage control; grid voltage imbalance; positive-and-negative sequence current; the dual current regulations; three-level PWM rectifier;
Conference_Titel :
Power Electronics for Distributed Generation Systems (PEDG), 2010 2nd IEEE International Symposium on
Conference_Location :
Hefei, China
Print_ISBN :
978-1-4244-5669-7
DOI :
10.1109/PEDG.2010.5545807
