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首页> 外文期刊>IEEE Transactions on Industrial Electronics >A Single-Stage Power Electronic Transformer for a Three-Phase PWM AC/AC Drive With Source-Based Commutation of Leakage Energy and Common-Mode Voltage Suppression
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A Single-Stage Power Electronic Transformer for a Three-Phase PWM AC/AC Drive With Source-Based Commutation of Leakage Energy and Common-Mode Voltage Suppression

机译：单相功率电子变压器，用于三相PWM AC / AC驱动器，具有基于源的泄漏能量换向和共模电压抑制

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摘要

This paper presents a novel topology for the generation of adjustable frequency and magnitude pulsewidth-modulated (PWM) three-phase ac from a balanced three-phase ac source with a high-frequency ac link. The proposed single-stage power electronic transformer (PET) with bidirectional power flow capability may find application in compact isolated PWM ac drives. This topology along with the proposed control has the following advantages: 1) input power factor correction; 2) common-mode voltage suppression at the load end; 3) high-quality output voltage waveform (comparable with conventional space vector PWM); and 4) minimization of output voltage loss, common-mode voltage switching, and distortion of the load current waveform due to leakage inductance commutation. A source-based commutation of currents associated with energy in leakage inductance (termed as leakage energy) has been proposed. This results in soft-switching of the output-side converter and recovery of the leakage energy. The entire topology along with the proposed control scheme has been analyzed. The simulation and experimental results verify the analysis and advantages of the proposed PET.
机译：本文提出了一种新颖的拓扑结构，该拓扑结构用于通过带有高频交流链路的平衡三相交流电源生成可调频率和幅度的脉宽调制（PWM）三相交流电。所提出的具有双向潮流能力的单级电力电子变压器（PET）可能会在紧凑型隔离式PWM交流驱动器中找到应用。这种拓扑结构与所建议的控制方法具有以下优点：1）输入功率因数校正； 2）负载端的共模电压抑制； 3）高质量的输出电压波形（与传统的空间矢量PWM相比）； 4）最小化输出电压损耗，共模电压切换以及由于漏感换向而导致的负载电流波形失真。已经提出了与泄漏电感中的能量（称为泄漏能量）相关的电流的基于源的换向。这导致输出侧转换器的软开关和泄漏能量的恢复。分析了整个拓扑以及提出的控制方案。仿真和实验结果验证了所提出的PET的分析和优点。

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