| Title |
Power Loss Analysis of Full-Bridge LLC Resonant Converter Using Enhanced Time Domain Analysis Method |
| Authors |
김건희(Keon-Hee Kim) ; 박수성(Su-Seong Park) ; 이동근(Dong-Geun Lee) ; 김래영(Rae-Young Kim) |
| DOI |
https://doi.org/10.5370/KIEE.2025.74.7.1237 |
| Keywords |
LLC Resonant Converter; WBG semiconductor; Power Loss Analysis; TDA method |
| Abstract |
This paper proposes a method for analyzing power loss in a full-bridge LLC resonant converter based on the enhanced Time-Domain Analysis (TDA) technique. The proposed enhanced TDA method demonstrates that the power loss in an LLC resonant converter can be expressed through a complete equation. The necessary initial values are represented in equations, showing a deviation of less than 5% compared to simulation results. Furthermore, based on an 8.4kW full-bridge LLC resonant converter prototype, the proposed method and experimental values are compared in terms of efficiency across different loads, with a maximum error of 1.7% under light loads, while exhibiting highly similar values in other regions. |