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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：使用全波电压倍增器的模块化非隔离式二开关均衡器，用于串联电池/超级电容器

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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大量开关和/或多绕组变压器，这在电路复杂性和可扩展性方面是不希望的。在这项研究中，提出了一种用于串联连接的锂离子电池/ SC的模块化非隔离式二开关电池均衡器。拟议的均衡器由一个非隔离式前端DC-DC转换器和一个全波电压倍增器电路组成。在没有耦合电感，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器电路使其可以灵活扩展到更多的电池/ SC电池。此外，它可以在没有电池监视电路的情况下在开环下工作，从而使其控制变得简单。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常规非隔离均衡器相比，它受益于更快的均衡速度和更低的均衡损耗。通过所有开关的零电压开关可实现高效率。提供实验结果以验证提出的均衡器的分析结果。

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