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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进型双降压-升压型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：随着直流负载和可再生能源的广泛应用，直流微电网变得越来越有吸引力，尤其是在有源交流/直流转换器方面。最近，针对直流微电网的具有三端输出的高效降压-升压型AC / DC转换器已被提出。但是，该转换器的主要缺点是在直流负载不相等的情况下输出电压变得不平衡，这在实际应用中带来了挑战。在这项研究中，提出了一种具有自平衡直流输出电压的改进型降压-升压型AC / DC转换器。等效电路用于分析所提出的转换器的工作原理。作为拟议转换器的重要组成部分，设计了耦合电感，同时详细介绍了设计过程。采用无差拍控制方法来整形耦合电感器电流的波形。开发了一个220 V / 50 Hz / 1.5 kW的原型，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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