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首页> 外文期刊>Power Electronics, IET >Wide ZVS operation of a semi-dual-bridge resonant converter under variable-frequency phase-shift control
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Wide ZVS operation of a semi-dual-bridge resonant converter under variable-frequency phase-shift control

机译：在变频相位换档控制下半双桥谐振转换器的宽ZVS操作

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摘要

A secondary phase-shifted dual-bridge converter with semi-active rectifier is able to perform buck–boost dc–dc conversion with soft-switching. However, it can not maintain zero-voltage switching (ZVS) operation for all switches in a wide load range. Besides, the root mean square/peak tank current increases inversely with the decreasing of load in the light load region. To alleviate these problems and extend its load range, a hybrid varying-frequency phase-shift (VFPS) control is proposed to manipulate the power for a semi-dual-bridge converter with the primary half-bridge and secondary semi-active rectifier topology. Steady-state analysis of the converter under VFPS control is performed using the fundamental harmonic approximation approach. A detailed design procedure is given then to find a full ZVS trajectory with a fixed ZVS margin at light load. Experimental results proved that the VFPS control can effectively extend the operation range with full ZVS and maintain high efficiency at light load for the semi-dual-bridge resonant converter.
机译：具有半主动整流器的二次相位移双桥转换器能够使用软切换执行降压 - 升压DC-DC转换。但是，它不能维护宽负载范围内所有开关的零电压切换（ZVS）操作。此外，根部均线/峰值罐电流随着光负荷区域中的负载的降低而增加。为了缓解这些问题并扩展其负载范围，提出了一种混合变化频率相移（VFPS）控制，以操纵具有初级半桥和次级半主动整流拓扑的半双桥转换器的电力。使用基本谐波近似方法进行VFPS控制下的转换器的稳态分析。给出了详细的设计过程，然后给出了在轻负载下具有固定ZVS余量的完整ZVS轨迹。实验结果证明，VFPS控制可以有效地将操作范围与全ZVS完全扩展，并在半双桥谐振转换器的轻负载下保持高效率。

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  • 来源
    《Power Electronics, IET》 |2020年第9期|1746-1755|共10页
  • 作者

    Shengzhi Zhou; Xiaodong Li; Zeran Zhong; Xinan Zhang;

  • 作者单位

    Macau University of Science and Technology Faculty of Information Technology Avenida Wai Long Taipa Macau People's Republic of China;

    Macau University of Science and Technology Faculty of Information Technology Avenida Wai Long Taipa Macau People's Republic of China;

    Macau University of Science and Technology Faculty of Information Technology Avenida Wai Long Taipa Macau People's Republic of China;

    Macau University of Science and Technology Faculty of Information Technology Avenida Wai Long Taipa Macau People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    DC-DC power convertors; switching convertors; bridge circuits; zero voltage switching; resonant power convertors;

    机译：DC-DC电源转换器;开关转换器;桥接电路;零电压切换;谐振电源转换器;

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