ABSTRACT

This paper proposes a non-isolated bipolar bidirectional DC–DC converter with an interleaved switched capacitor for bipolar DC micro-grids suitable for both low-power and high-power applications to achieve high-voltage gain. Interleaved structure on the low-voltage side is proposed to realise current sharing to reduce current ripple and switched capacitor topology on high-voltage side to achieve high-voltage gain. Soft switching, high efficiency and simple control make this converter employable in several applications such as electric vehicles, energy storage systems, etc. Simulation and hardware results are presented to highlight the merits of the proposed converter topology.

摘要

本文提出了一种用于双极直流微电网的具有交错开关电容器的非隔离双极双向 DC-DC 转换器，适用于低功率和高功率应用，以实现高压增益。低压侧采用交错结构实现均流，降低电流纹波，高压侧采用开关电容拓扑实现高压增益。软开关、高效率和简单的控制使该转换器可用于电动汽车、储能系统等多种应用。仿真和硬件结果突出了所提出转换器拓扑的优点。