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首页> 外文期刊>Power Electronics, IET >Modularised non-isolated two-switch equaliser using full-wave voltage multiplier for series-connected battery/super-capacitor
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Modularised non-isolated two-switch equaliser using full-wave voltage multiplier for series-connected battery/super-capacitor

机译：模块化非隔离的双开关均衡器，使用全波电压倍增器用于串联电池/超级电容

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摘要

Conventional battery/super-capacitor (SC) cell voltage equalisers require numerous switches and/or a multi-winding transformer, which are not desired in terms of circuit complexity and extendibility. In this study, a modularised non-isolated two-switch cell voltage equaliser for series-connected lithium-ion battery/SC is proposed. The proposed equaliser consists of a non-isolated front-end dc-dc converter and a full-wave voltage multiplier circuit. Without coupled-inductor, multi-winding transformer and multiple active switches, the proposed equaliser uses only two active switches and two magnetic components, thus it benefits from reduced complexity and circuit volume. Meanwhile, the modularised full-wave voltage multiplier circuit makes it flexible to extend to more battery/SC cells. Furthermore, it can work under open-loop without cell monitoring circuit, which makes its control simple. The equalisation current of the proposed equaliser can be limited automatically. Compared with conventional non-isolated equalisers using half-wave voltage multiplier, it benefits from faster equalisation speed and lower equalisation loss. High efficiency is achieved by zero voltage switching of all switches. Experimental results are provided to verify analysis results of the proposed equaliser.
机译：传统的电池/超级电容器（SC）电池电压均衡器需要许多开关和/或多绕组变压器，而是在电路复杂性和可扩展性方面不需要。在该研究中，提出了一种用于串联连接的锂离子电池/ SC的模块化非隔离的两开关电池电压均衡器。所提出的均衡器包括非隔离的前端DC-DC转换器和全波电压乘法器电路。在没有耦合电感器，多绕组变压器和多个有源开关的情况下，所提出的均衡器仅使用两个有源开关和两个磁性元件，因此它受益于降低的复杂性和电路体积。同时，模块化的全波电压倍增电路使其灵活地延伸到更多电池/ SC单元。此外，它可以在没有单元格监测电路的开环下工作，这使其控制简单。所提出的均衡器的均衡电流可以自动限制。与使用半波电压倍增器的传统非隔离均衡器相比，它受益于更快的均衡速度和较低的均衡损耗。通过所有开关的零电压切换实现高效率。提供了实验结果以验证所提出的均衡器的分析结果。

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