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首页> 外文期刊>Power Electronics, IET >Implementation and analysis of ultracapacitor charger in hybrid energy-storage system for electric-vehicle applications
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Implementation and analysis of ultracapacitor charger in hybrid energy-storage system for electric-vehicle applications

机译：电动汽车应用混合能量储存系统超容量充电器的实施与分析

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摘要

The light rail vehicles (commonly known as tramways or lightly laid railways) offer environmental advantages and have evoked an impressive attraction. The hybrid energy-storage systems efficiently supply energy for the light rail vehicles during the travel. This study implements and analyses an ultracapacitor charger in hybrid energy-storage system for electric-vehicle applications. Moreover, an ultracapacitor charger based on a full-bridge DC–DC converter that utilises a synchronous-rectification technique and high charging-current capability is presented. The proposed converter's current-doubler synchronous rectification reduces the secondary circulating current and recycles the energy of the leakage current to the power-source lead to further increase conversion efficiency. A prototype of this ultracapacitor charger, with an input voltage of 380 V and an output voltage of 14.6 V, has been implemented; the measured efficiency is 92.1% at a full load of 1 kW. In addition, the experimental results show the highest efficiency is 93.4% at an output power of 600 W. Furthermore, an ultracapacitor of 250 F is charged by the presented converter with a charging current of 65 A, and experimental waveforms illustrate that the charging time of the ultracapacitor voltage from 0 to 14.6 V is within 1 min.
机译：轻轨车辆（俗称电车轨道或轻型铺设铁路）提供了环境优势，并唤起了令人印象深刻的吸引力。混合能量储存系统在旅行期间有效地为轻轨车辆提供能量。该研究实施并分析了用于电动汽车应用的混合能量储存系统中的超容量充电器。此外，介绍了基于具有同步整流技术和高充电电流能力的全桥DC-DC转换器的超超容量充电器。所提出的转换器的电流 - 倍增器同步整流减少了次级循环电流，并回收漏电流的能量，以进一步提高转换效率。这种超容器充电器的原型，输入电压为380V，输出电压为14.6V，已经实现;测量效率在1 kW的满负荷下为92.1％。此外，实验结果表明，最高效率为600W的输出功率为93.4％。此外，由呈现的转换器充电的电流为65a的充电电流，实验波形表示充电时间Ultacapacitor电压为0至14.6 V在1分钟内。

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