Development of Bidirectional Full-Bridge LLC Resonant Converter with Constant-On-Time and Variable-Frequency Control

• Main Authors: Hung-Ju Lin, 林宏儒
• Other Authors: Ching-Lung Chu
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/jb3am5

碩士 === 南臺科技大學 === 電機工程系 === 106 === In this thesis, a bidirectional full-bridge LLC resonant converter utilizes constant conduction time and variable frequency control is proposed. The control methods are Ts/Tr and Tr/Ts. In these two modes of operation, control the constant conduction time and variable frequency is capable to regulate the gain of the LLC resonant converter. Furthermore, the power direction and magnitude of the converter is capable to controlled by adjusting the converter gain. The operating modes Ts/Tr and Tr/Ts of the converter is analysis in this thesis. Observer the analysis results, the converter can be operated in suitable modes to control its bidirectional power, while the all power switches are achieve zero voltage conduction. At last, a bidirectional full-bridge LLC resonant converter with rated power of 1000W, low-voltage side battery voltage of 40-60V and high-voltage DC bus 200V is implemented in this thesis. The experimental results verify the feasibility of the proposed converter.