Research on the modulation and control of multilevel matrix converter

Qu Jianglei; Xu Lie; Wang Lina; Hui Yannian

Research on the modulation and control of multilevel matrix converter

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Author(s): Qu Jianglei¹ ; Xu Lie² ; Wang Lina³ ; Hui Yannian¹
- Affiliations: 1: Beijing Aeronautical Science and Technology Research Institute of COMAC , Beijing , People's Republic of China ;
  2: The School of Electrical Engineering, Tsinghua University , Beijing , People's Republic of China ;
  3: The School of Automation Science and Electrical Engineering, Beihang University , Beijing , People's Republic of China
Source: Volume 2018, Issue 13, 2018, p. 614 – 621
DOI: 10.1049/joe.2018.0058 , Online ISSN 2051-3305

This is an open access article published by the IET under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/)

Received 25/01/2018, Accepted 02/02/2018, Published 09/02/2018

This paper discusses the effects of different space vector modulation (SVM) hexagon partition on common mode voltage suppression at high modulation index and presents an improved capacitor voltage balance strategy for multilevel matrix converter. Matrix converter is a compact designed converter which allows direct AC–AC power transfer without an intermediate DC link. Multilevel matrix converters, which utilises a multilevel structure on a traditional matrix converter, expand these characters to high-voltage and high-power situations. This paper is concerned with SVM of three-level matrix converter and concentrates on the comparison between different hexagon partitions; the improved balancing strategy is employed to improve the performance of flying capacitor voltage control. Simulation from Matlab/Simulink and results from a small-scale experimental prototype are presented to validate the theoretical results.

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