Implementation of Full-Bridge LLC Resonant Converter with Series-Input/Parallel-Output Transformer

• Main Authors: TU,MING-YU, 涂明瑜
• Other Authors: ZHU,QING-LONG
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/dzftvt

碩士 === 南臺科技大學 === 電機工程系 === 107 === This thesis proposed a full-bridge LLC resonant converter with series-input/parallel-output transformer. Series resonant converter (SRC) is capable to achieve the converter's switches are operating in zero voltage switching (ZVS). Architecture of this proposed thesis is adopt a dual transformer, which is primary side is series connection as well as secondary side is parallel connection to obtain quite higher current. In this thesis, the converter will be detailed description in operation principle and state analysis. Otherwise, the operating range of converter will be designed which is depend on the analysis result and ensure the switches of converter are operating in ZVS to reduce the conduction loss. The dual transformer divides the output load current evenly, decrease the transformer bulk, and it will be result in high power application more easily. At last, a full-bridge LLC resonant converter with series-input/parallel-output transformer of 80 to 120 V, output voltage of 24 V and output power of 200 W are realized. The experimental results verify the feasibility of the proposed resonant converter.