Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title The Modified Control Method of Boost Converter for PV System in DCM
Authors Young-Jin Lee ; Dong-Hwa Han ; Byeong-Joo Byen ; Jung-Muk Choi ; Dugarjav Bayasgalan ; Gyu-Ha Choe
DOI 10.6113/TKPE/2013.18.4.297
Page pp.297-304
ISSN 1229-2214
Keywords boost converter; hybrid controller; state feedback controller; discontinuous conduction mode
Abstract This paper presents a improved control technique to overcome disadvantage when the inductor current of boost converter in PV system becomes DCM(Discontinuous Conduction Mode) due to the low insolation. MPPT(Maximum Power Point Tracking) output reference voltage could not be exactly followed by conventional dual-loop PI control method used typically because of the error between the actual current and measured current. Therefore, in this paper, Hybrid controller that changes the control method in DCM and CCM(Continuous Conduction Mode), and single state feedback controller are used to compensate that problem. The proposed control technique was verified by simulation using PSIM 9.0 and experiments.