In this article, a novel bidirectional dc–dc converter (BDC) consisting of an active switched-inductor (A-SL) cell, a zero current ripple cell and an auxiliary capacitor cell is proposed for the battery energy storage system. The proposed BDC integrates with the advantages of high voltage conversion ratio, low power switch voltage stresses, zero ripple current on the low voltage side (LVS), and constant potential difference between the grounds of LVS and high voltage side. Thanks to the use of synchronous rectification technology, the efficiency of the proposed BDC is increased. The operating principles, the characteristics analysis and the parameter design of the proposed BDC are given. In addition, to show the merits of the proposed BDC, a comparison study involves the proposed converter and other BDCs is demonstrated. Finally, some experimental results obtained using a 1000 W prototype are presented to valid the effectiveness of the proposed BDC. 96.43% and 96.67% maximum conversion efficiencies can be achieved in the step-up and step-down modes, respectively.

中文翻译：

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一种用于电池储能系统的高电压转换比、零纹波电流的双向DC-C变换器


在本文中，提出了一种用于电池储能系统的新型双向 DC-DC 转换器（BDC），该转换器由有源开关电感器（A-SL）单元、零电流纹波单元和辅助电容器单元组成。所提出的 BDC 集成了高电压转换比、低功率开关电压应力、低压侧 (LVS) 零纹波电流以及 LVS 和高压侧接地之间恒定电位差的优点。由于使用了同步整流技术，所提出的 BDC 的效率得到了提高。给出了BDC的工作原理、特性分析和参数设计。此外，为了展示所提出的 BDC 的优点，还演示了所提出的转换器和其他 BDC 的比较研究。最后，使用 1000 W 原型获得的一些实验结果验证了所提出的 BDC 的有效性。在升压和降压模式下可分别实现 96.43% 和 96.67% 的最大转换效率。