一种双极性输出端口电压自平衡隔离型DC/DC变换器  

A Self-balancing Isolated DC/DC Converter With Bipolar Output Voltage

作　　者：邾玢鑫[1] 周丽娟 杨浴金 王凯宏 ZHU Binxin;ZHOU Lijuan;YANG Yujin;WANG Kaihong(Hubei Provincial Engineering Technology Research Center for Intelligent Energy Technology(Collage of Electrical Engineering&New Energy,China Three Gorges University),Yichang 443002,Hubei Province,China)

机构地区：[1]智慧能源技术湖北省工程研究中心(三峡大学电气与新能源学院),湖北省宜昌市443002

出　　处：《中国电机工程学报》2024年第14期5702-5713,I0022,共13页Proceedings of the CSEE

基　　金：国家自然科学基金(51707103);广西自治区重点研发计划(2022AB05028)。

摘　　要：隔离型DC/DC变换器通过多绕组变压器可方便地实现多路或双极性输出,但因交叉调整率问题,在负载不平衡时输出各端口电压存在较大偏差。针对该问题,该文基于反激变换器推导出一种双极性端口电压自平衡隔离型DC/DC变换器。所提方案结构简单、成本低,在不改变传统反激变换器驱动及控制电路设计的情况下能够较好的实现端口电压自平衡,且所提变换器结构具有可拓展性。文中首先详细阐述了所提变换器拓扑的推演过程,然后对变换器的工作原理、性能特点以及电压自平衡机理进行分析。最后,搭建了一台150 W的实验样机,验证了所提变换器理论分析的正确性和有效性。The isolated DC/DC converters can easily realize multiple or bipolar output through multi-winding transformers.However,due to the issue of cross-regulation,there is a large deviation between the output port voltages when the load is unbalanced.To solve this problem,a self-balancing isolated DC/DC converter with bipolar output voltage is derived based on flyback converter in this paper.The proposed scheme is simple in structure and low in cost.It can better achieve self-balancing of the port voltage without changing the drive and control circuit design of the traditional flyback converter.Moreover,the proposed converter structure is extensible.The paper first elaborates in detail the derivation process of the proposed converter topology,then analyzes the operating principle,performance characteristics,and the voltage self-balancing mechanism of the converter.Finally,a 150 W experimental prototype is built to verify the correctness and feasibility of the theoretical analysis of the proposed converter.

关 键 词：双极性 反激变换器 交叉调整率 电压自平衡 

分 类 号：TM46[电气工程—电器]