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基于通用伏秒平衡模型的三相隔离式AC-DC矩阵变换器准对称SVPWM方案

Quasi-Symmetrical SVPWM Scheme Based on General Volt-Second Balance Model for a Three-Phase Isolated AC–DC Matrix Converter

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中文摘要

针对三相隔离式AC-DC矩阵变换器(3P-IMC)在对称运行模式下存在大量冗余开关动作导致损耗增加的问题,本文提出了一种通用伏秒平衡模型,并设计了一种准对称空间矢量脉宽调制(SVPWM)方案,旨在优化开关策略并降低开关损耗。

English Abstract

Since all of the three-phase isolated ac–dc matrix converters (3P-IMC) must be strictly limited to the symmetrical operation modes to maintain volt-second balance, there could be a lot of symmetrical but redundant switching actions to increase the switching loss. Hence, a generalized volt-second balance model is summarized for 3P-IMC in this article, and a quasi-symmetrical space vector pulsewidth...
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SunView 深度解读

该研究提出的准对称SVPWM方案通过优化开关序列降低损耗,对阳光电源的组串式逆变器及储能变流器(PCS)具有参考价值。虽然矩阵变换器在当前主流光伏逆变器中应用较少,但其高功率密度和隔离特性与未来高频化、小型化的储能变流器发展趋势契合。建议研发团队关注该调制策略在降低功率器件开关损耗方面的潜力,特别是在提升PowerTitan等储能系统效率及热管理优化方面进行可行性探索。