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宽增益多模式的三相LLC谐振变换器 被引量:2

Three phase LLC resonant converter with wide gain and multiple modes
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摘要 为了使充电桩满足不同型号汽车的充电需要,针对充电桩的DC-DC部分,提出一种宽增益多模式的三相LLC谐振变换器拓扑。在传统三相LLC谐振变换器的逆变部分加入一个开关管,增加电路的自由度,使电路可以工作在低增益、中增益、高增益三种模式下,实现0.8~2.1倍增益。首先,对变换器的工作模式的工作原理进行分析。然后,推导等效电阻,基于基波分析法建立等效模型,推导增益公式并进行分析。最后搭建一台输入电压为400V,输出电压为160V~420V,功率为1.4kW的实验样机。实验结果表明变换器达到了预期增益,验证了理论分析的正确性和拓扑的可行性。
作者 孙晓钰 刘春喜 SUN Xiao-yu;LIU Chun-xi
出处 《制造业自动化》 北大核心 2023年第1期58-63,共6页 Manufacturing Automation
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