Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title LCL Filter Design for Grid-connected PCS Using Total Harmonic Distortion and Ripple Attenuation Factor
Authors Jong-Hyoung Park ; Min-Hun Chi ; Heung-Geun Kim ; Tae-Won Chun ; 魯Eui-Cheol Nho
DOI 10.6113/TKPE/2010.15.3.235
Page pp.235-243
ISSN 1229-2214
Keywords LCL Filter Design; Ripple Current; Total Harmonics Distortion; Ripple Attenuation; Three-phase Inverter
Abstract This paper describes a design method of LCL filter for grid-connected three-phase PWM inverter. First, by analyzing the ripple component of phase voltages and currents according to the PWM pattern of grid-connected three-phase inverter, the RMS value of the current ripple can be calculated. Then based on the analysis, the current THD in the inverter-side can be defined. After that by analyzing the dependency between the current THD of the system and the current ripple attenuation, the parameter of LCL filter can be designed. Finally, the described LCL filter design method is verified by showing a good agreement between the target current THDg and the actual one through the simulation and experiment.