Digitized Feedforward Compensation Method for High-Power-Density Three-Phase Vienna PFC Converter
Digitized Feedforward Compensation Method for High-Power-Density Three-Phase Vienna PFC Converter
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DOI：
10.1109/tie.2012.2222851
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发表时间：
2013-04
影响因子：
7.7
通讯作者：
L. Hang;Ming Zhang;L. Tolbert;Zheng-yu Lu
中科院分区：
文献类型：
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作者：
L. Hang;Ming Zhang;L. Tolbert;Zheng-yu Lu
提出了一种基于三电平双向开关维也纳拓扑的前端三相AC/DC功率因数校正整流器。一方面，整流器被设计为在全功率下以连续导通模式（CCM）操作。然而，在降低负载时，它以不连续导通模式（DCM）工作。另一方面，随着输入电感的降低，即使整流器以全功率工作，也会出现DCM模式。本文提出了一种数字化前馈补偿方法，用于整流器，以减少DCM和CCM之间切换的影响。对该方法进行了理论分析，并给出了控制器的设计策略。采用数字控制的维也纳整流器进行了实验，验证了所提出的补偿方法的有效性。
This paper presents a front-end three-phase ac/dc power factor correction rectifier, which is based on the three-level bidirectional-switch Vienna topology. On one hand, the rectifier is designed to operate in continuous-conduction mode (CCM) at full power. However, at reduced load, it operates in discontinuous-conduction mode (DCM). On the other hand, with reduced input inductance, the DCM mode occurs even when the rectifier operates at full power. In this paper, the digitized feedfoward compensation method is proposed for the rectifier to reduce the impact of the switch between DCM and CCM. The theoretical analysis of the proposed method is deduced; furthermore, the control design strategy is given. The experimental results are obtained by using a digitally controlled Vienna rectifier, which validated the proposed compensation method.