一种适用于波浪能发电系统的新型三端口DC/DC变换器

摘要

A novel three-port DC/DC converter for wave power generation system is proposed. The topology is a three-port full-bridge converter generated based on the two-port full-bridge converter by increasing a transformer secondary winding. The converter not only meet the demand of wide input range voltage application and high security, but also realize the buck-boost transformation. Adopting the soft switching technology, the topology is suitable for high-power application. Finally, in this paper the work states and operational modes are analyzed, and the theoretical analysis is verified by saber simulation.%提出了一种新型的三端口DC/DC变换器电路拓扑。在全桥变换器的基础上，增加一个变压器副边，形成三端口全桥变换器。该拓扑不仅输入电压变化范围宽，输入输出变比大，安全性高，实现了升降压变换；并且采用了软开关技术，适用于大功率场合。分析了该变换器的工作状态和开关模态，并通过Saber 仿真验证了理论分析的正确性。