不平衡电网中三相单级PFC的改进占空比发电方案

2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI:10.1109/PEAC.2018.8590479

Tao Meng, Zhenduo Chen, H. Ben, Huishuang Fan

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引用次数: 0

摘要

本文提出并设计了一种改进的占空比发电方案，以克服三相PFC变换器在电网不平衡条件下基于隔离全桥拓扑的运行问题。根据平衡状态对该三相变流器在特殊不平衡状态下的输入电流进行分析，在此基础上对其占空比进行再生，使该变流器在电网不平衡状态下具有较好的三相功率因数。最后，通过仿真和实验验证了所提方案和分析的正确性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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An Improved Duty Cycle Generation Scheme for the Three-Phase Single-Stage PFC in Unbalanced-Grid

An improved duty cycle generation scheme is proposed and designed in this paper to overcome the operational problems of the three-phase PFC converter based on the isolated full-bridge topology in the unbalanced-grid condition. Input current of this three-phase converter in the special unbalanced condition is analyzed according to that in the balanced condition, based on which, its duty cycle is regenerated to achieve a better three-phase power factor of this converter in the unbalanced-grid condition. Finally, the proposed scheme and analysis are verified by the simulation and experiment.

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2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)

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