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首页> 外文期刊>Power Electronics, IET >Modified dual buck–boost AC/DC converter with self-balanced DC output voltages
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Modified dual buck–boost AC/DC converter with self-balanced DC output voltages

机译：具有自平衡直流输出电压的改装双降压 - 升压AC / DC转换器

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摘要

With wide applications of DC loads and renewable energy generation sources, the DC micro-grid becomes more and more attractive, especially regarding active AC/DC converters. Recently, a high-efficiency buck-boost AC/DC converter with three terminal outputs has been presented for DC micro-grid. However, the main drawback of this converter is that the output voltages become unbalanced in the case of unequal DC loads, which causes a challenge in practical applications. In this study, a modified buck-boost AC/DC converter with self-balanced DC output voltages is proposed. Equivalent circuits are used to analyse the operating principle of the proposed converter. As an important part of the proposed converter, the coupled inductor is designed, while the design procedure is described in detail. The dead-beat control method is adopted to shape the waveform of the coupled inductor current. A 220 V/50 Hz/1.5 kW prototype is developed, and detailed experiments are carried out to corroborate the validity of the proposed converter.
机译：随着DC负载和可再生能源源的广泛应用，DC微电网变得越来越有吸引力，特别是关于有源AC / DC转换器。最近，已经提出了一种具有三个端子输出的高效降压-Boost AC / DC转换器，用于DC Micro-Grid。然而，该转换器的主要缺点是在不平等的DC负载的情况下输出电压变得不平衡，这在实际应用中引起挑战。在该研究中，提出了一种具有自平衡直流输出电压的改进的降压-Boost AC / DC转换器。等效电路用于分析所提出的转换器的操作原理。作为所提出的转换器的重要部分，设计了耦合电感器，而设计过程详细描述。采用死区搏动控制方法以耦合电感器电流的波形形状。开发了220 V / 50 Hz / 1.5 kW原型，并进行了详细的实验以证实所提出的转换器的有效性。

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  • 来源
    《Power Electronics, IET》 |2019年第5期|1170-1178|共9页
  • 作者

    Wang Houqing; Wu Weimin; Gao Ning; He Yuanbin; Chung Henry Shu-hung; Blaabjerg Frede;

  • 作者单位

    Shanghai Maritime Univ Elect Engn Dept Shanghai Peoples R China;

    Shanghai Maritime Univ Elect Engn Dept Shanghai Peoples R China;

    Shanghai Maritime Univ Elect Engn Dept Shanghai Peoples R China;

    Hangzhou Dianzi Univ Res Inst Elect Engn & Automat Hangzhou Zhejiang Peoples R China;

    City Univ Hong Kong Dept Elect Engn Hong Kong Peoples R China;

    Aalborg Univ Energy Technol Dept Aalborg Denmark;

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