This study presents the full-bridge dc–dc converter (FBDC) operated with customised pulse width modulation (cPWM) for electric vehicle (EV) battery charging. The proposed cPWM retains all the benefits of the popular conventional phase shifted modulation (PSM) with minimal modification in the pulse width while further achieving the zero voltage switching for the active switches of the converter. The cPWM gating technique results in minimal circulating loss and switch conduction loss in comparison to PSM gating technique and higher efficiency. The detailed operation of the converter is presented with analysis. The theoretical waveforms of the converter and power loss analysis are discussed. A 540 W, 80 kHz experimental prototype is developed to validate the theoretical analysis. Finally, the comparison between PSM and cPWM is presented.

中文翻译：

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基于定制脉冲宽度调制的dc-dc转换器的设计和分析，用于EV电池充电应用

这项研究提出了全桥DC-DC转换器（FBDC），其通过定制的脉冲宽度调制（cPWM）运行，可为电动汽车（EV）电池充电。提出的cPWM保留了流行的传统相移调制（PSM）的所有优点，同时脉宽变化很小，同时还为转换器的有源开关实现了零电压开关。与PSM门控技术相比，cPWM门控技术可将循环损耗和开关传导损耗降至最低，并具有更高的效率。通过分析介绍了转换器的详细操作。讨论了转换器的理论波形和功耗分析。开发了540 W，80 kHz的实验原型以验证理论分析。最后，介绍了PSM和cPWM的比较。