Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Novel Control and Design Method for Wide Stability Range of Grid Connected Inverter with LCL Filter
Authors Kwon-Sik Park ; Byung-Jun Seo ; Hak-Soo Kim ; Eui-Cheol Nho
Page pp.440-445
ISSN 1229-2214
Keywords Grid-connected inverter ; LCL filter ; Active damping ; Passive damping
Abstract This study proposes a novel control and design method for a grid-connected inverter with an LCL filter without damping. The current resonance phenomenon must be considered when designing the grid-connected inverter system with an LCL filter. Passive or active damping is used in the inverter system to reduce the resonant current. However, passive damping reduces the efficiency of the system, and active damping methods are complex. If the resonant frequency is in a specific region, then the system will be unstable. This study examines the process of stabilizing the entire region without resonant damping. The validity of the proposed method is verified through simulation and experimentation.