一种新型三相buck型整流器及其分析

2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI:10.1109/PEAC.2018.8590284

Xiao Hongxia, Zhang Cuijie, L. Bin, Cai Jinqi, Liu Jun

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引用次数: 0

摘要

介绍了一种新型三相buck型PFC整流器。由于只有两个开关工作在高频状态，而其余开关处于低频状态，因此效率得到了提高。首先，分析了PFC整流器的各种开关状态，说明了两个高频开关的工作规律。一方面，这两个高频开关作为普通BUCK电路的性能保证了输出电压的稳定性，另一方面，通过调节高频开关的占空比来控制三相输入电流。然后，对调制进行了讨论，并给出了相应控制器的设计。最后，通过仿真和实验验证了buck型PFC整流器的有效性。

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A Novel Three-phase Buck-type Rectifier and Its Analysis

A new three-phase buck-type PFC rectifier is presented in this paper. The efficiency is improved since only two of the switches are working at high frequency while the rest are in the low-frequency state. Firstly, the various switching states of the PFC rectifier are analyzed and the working rules of the two high-frequency switches are illustrated. On one hand, the two high-frequency switches performance as the ordinary BUCK circuit to guarantee the stability of the output voltage, on the other hand, by adjusting duty ratios of high-frequency switches, the three-phase input current is controlled. Then, the modulation is discussed and the design of corresponding controller is given. Finally, the effectiveness of the buck-type PFC rectifier is verified through simulations and experiments.

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

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