Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Current Compensation Method of a Three Phase PWM Converter under Distorted Source Voltages
Authors Nae-Chun Park ; Hyung-Soo Mok ; Jun-Keun Ji ; Sang-Hoon Kim
Page pp.352-359
ISSN 1229-2214
Keywords Distorted source voltage; Current compensation; PWM converter; PLL
Abstract This paper deals with filter design for utility-interactive voltage-sourced PWM inverters built by single-phase half-bridge topology. By analyzing the relation between utility voltage and the ac output voltage of single-phase half-bridge inverters, the instantaneous voltage applied on the filter inductor is deduced qualitatively and quantitatively. Moreover, switching ripple current through the filter inductor is calculated from the filter inductor voltage. Based on the above mentioned analysis, filter design method is proposed by evaluating the percentage of the switching ripple current against the rated fundamental current. Proposed filter design method is verified by simulation and experiment.