Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Optimal Design of Resonant Network Considering Power Loss in 7.2kW Integrated Bi-directional OBC/LDC
Authors Seong-Il Song ; Jeong-Hun Noh ; Cheol-Ha Kang ; Jae-Eun Yoon ; Deog-Jae Hur
DOI 10.6113/TKPE.2020.25.1.21
Page pp.21-28
ISSN 1229-2214
Keywords Integrated bi-directional OBC/LDC; Power loss; Resonant network; SRC
Abstract Integrated bidirectional OBC/LDC was developed to reduce the volume for elements, avoid space restriction, and increase efficiency in EV vehicles. In this study, a DC-DC converter in integrated OBC/LDC circuits was composed of an SRC circuit with a stable output voltage relative to an LLC circuit using a theoretical method and simulation. The resonant network of the selected circuit was optimized to minimize the power loss and element volume under constraints for the buck converter and the battery charging range. Moreover, the validity of the optimal model was verified through an analysis using a theoretical method and a numerical analysis based on power loss at the optimized resonant frequency.