分时供电全桥Buck型双输入直流变换器  

Time-sharing power supply full-bridge buck mode dual-input DC-DC converter

作　　者：李钊钦 陈道炼 Li Zhaoqin;Chen Daolian(College of Electrical Engineering,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学电气工程学院,山东青岛266071

出　　处：《电子技术应用》2020年第4期93-98,共6页Application of Electronic Technique

摘　　要：在多种新能源联合供电的分布式发电系统中,用多输入直流变换器替代多个单输入直流变换器,能够简化电路结构,降低系统成本。分析研究了一种分时供电全桥Buck型双输入直流变换器的电路拓扑、最大功率输出能量管理控制策略和稳态原理特性,给出了实验结果。该电路拓扑是由两个并联分时选择支路和Buck型直流变换器级联构成的,该控制策略是通过控制输出电流瞬时值和双输入源输出功率之比间接地实现两个输入源的最大功率输出。设计并研制的3 kW双输入直流变换器具有体积重量小、成本低等性能,验证了理论分析的正确性与可行性。In the distributed generation system with multiple new energy joint supply,using a multi-input DC-DC converter instead of multiple single input DC-DC converters can simplify the circuit structure and reduce the cost.The circuit topology,maximum power output energy management control strategy and steady-state principle characteristics of the time-sharing power supply full bridge buck mode dual input DC-DC converter are analyzed and studied.The experimental results are given.The circuit topology is composed of two parallel selection branches and a buck mode converter in cascade.The control strategy indirectly realizes the maximum power output energy management control by controlling the instantaneous value of output current and the ratio of output power of two input sources.The 3 kW double input DC converter designed and developed has the advantages of small volume and weight,low cost and so on,which verifies the correctness and feasibility of the converter.

关 键 词：分时供电 全桥Buck 双输入直流变换器 能量管理 

分 类 号：TN86[电子电信—信息与通信工程]