Due to the low voltage transmission (no more than 0.866) and weak anti-interference ability of the Four-leg Matrix Converter (4LMC), its application in grid-connected transformation is limited. Therefore, this paper proposes a new modulation strategy of the Four-leg Matrix Converter (4LMC) based on quasi-Z source (QZS). Firstly, the boost principle of QZS-4LMC and three-dimensional space vector modulation strategy are analyzed. Secondly, on the basis of the three-dimensional space vector modulation, the shoot-through zero vector is inserted into the three-dimensional space vector modulation by dividing the shoot-through zero vector into 16 equal parts by using the shoot-through state instead of some zero vectors, so as to obtain a new modulation strategy. Then, the simulation model of QZS-4LMC is built in MATLAB/Simulink to analyze the control strategy. Finally, the experimental results verify the correctness and effectiveness of this new modulation strategy. © 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

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基于准Z源三相四腿矩阵变换器的新型空间矢量调制策略研究

由于四脚矩阵变流器（4LMC）传输电压低（不大于0.866），抗干扰能力弱，限制了其在并网变电中的应用。因此，本文提出了一种基于准Z源（QZS）的四腿矩阵变换器（4LMC）的新调制策略。首先分析了QZS-4LMC的升压原理和三维空间矢量调制策略。其次，在三维空间矢量调制的基础上，代之以直通状态，将直通零矢量分成16等份，将直通零矢量插入到三维空间矢量调制中。一些零向量，从而获得新的调制策略。然后，在MATLAB/Simulink中建立QZS-4LMC的仿真模型，对控制策略进行分析。最后，实验结果验证了这种新调制策略的正确性和有效性。© 2022 日本电气工程师学会。由 Wiley Periodicals LLC 出版。