Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title A Current Controller with the Compensation of the Input Voltage Unbalance and Distortion for Three Phase PWM Rectifier
Authors Hee-Keun Shin ; Hag-Wone Kim ; 烈Kwan-Yuhl Cho ; 林Byung-Kuk Lim
DOI 10.6113/TKPE/2011.16.6.594
Page pp.594-601
ISSN 1229-2214
Keywords PWM recitifier; MRAS observer; Unbalance compensation; Distortion compensation
Abstract In this paper, a new current controller with the compensation of an unbalance and distorted grid voltages has been proposed. Generally, in the three-phase power system, single phase or nonlinear loads can be connected with the 3 phase linear load simultaneously on the same point of common coupling. Therefore, The source voltage unbalance and distortion problem can be occurred. Under these unbalance and distorted grid voltage conditions, the input current of 3 phase PWM rectifiers also have unbalance and distortion. In this paper, a current controller with the simple Model Reference Adaptive System based unbalance and distorted voltages observer is proposed to get a sinusoidal input current. The performance of the proposed algorithm is verified through the simulation and the experiment.