A sinusoidal charging strategy for battery energy storage systems use in light electric vehicles

2016 IEEE Industry Applications Society Annual Meeting Pub Date : 2016-10-01 DOI:10.1109/IAS.2016.7731822

Y. Chuang, H. Chuang, Jyun-Han Wu

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引用次数: 2

Abstract

This work develops a novel sinusoidal charging strategy for use in light electric vehicles (LEVs). To generate a sinusoidal charging current, the switching frequency of the series-resonant converter is less than half of the resonant frequency. Thus, the series-resonant converter is operated in discontinuous current mode (DCM) to achieve the zero-current-switching (ZCS) condition. As a result, high energy conversion is ensured. Novel sinusoidal charging topologies with a simple structure, low cost, easy control, and high efficiency are presented for the battery energy storage systems (BESSs) of LEVs. The operating principles and design procedure of the novel sinusoidal charger circuits will be analyzed in detail. The optimal properties of the resonant components are derived from the novel sinusoidal charger circuit configuration. Simulation and experimental results are obtained for a laboratory prototype and demonstrate the feasibility of the proposed strategy. Finally, prototypes of the novel sinusoidal charger circuit that is designed for LEVs with a 48V-12Ah lead-acid BESS are constructed and tested to confirm the theoretical predictions. The maximum charging efficiency of the charging period is 95.95%. Experimental results reveal the satisfactory performance of the novel high-frequency sine-wave charging strategy, which is particular appropriate for BESSs in LEVs.

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轻型电动汽车电池储能系统的正弦充电策略

这项工作开发了一种用于轻型电动汽车(lev)的新型正弦充电策略。为了产生正弦充电电流，串联谐振变换器的开关频率小于谐振频率的一半。因此，串联谐振变换器工作在断续电流模式(DCM)下，实现零电流开关(ZCS)状态。因此，保证了高能量转换。提出了一种结构简单、成本低、易于控制、效率高等正弦充电拓扑结构。详细分析了新型正弦充电电路的工作原理和设计过程。谐振元件的最佳性能来源于新型正弦充电电路结构。在实验室样机上进行了仿真和实验，验证了该策略的可行性。最后，构建了用于具有48V-12Ah铅酸BESS的lev的新型正弦充电电路原型，并对其进行了测试，以验证理论预测。充电周期的最大充电效率为95.95%。实验结果表明，新型高频正弦波充电策略具有良好的性能，特别适用于低电压车辆的bess充电。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 IEEE Industry Applications Society Annual Meeting

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