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A three-phase modular isolated matrix converter

Nasir, Usman; Costabeber, Alessandro; Rivera, Marco; Wheeler, Pat; Clare, Jon

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Usman Nasir

Alessandro Costabeber

Marco Rivera

Jon Clare


This paper discusses the analysis, design and experimental validation of a Modular Isolated Matrix Converter (MIMC), including modulation, commutation and control. The MIMC topology is a single-stage high power density AC/AC converter which is attractive for traction applications and space-restricted LV or MV future distribution networks. The topology under study utilises bi-directional switches based dual-active-bridge cells as basic building blocks. A single-cell would have limited practical application as the output frequency is locked to the input one. On the contrary, the repetition of single cells proposed in the MIMC extending the matrix converter concept, achieves variable frequency operation while also providing a modular structure. However, the presence of Medium Frequency (MF) transformers in each cell poses additional challenges for modulation and safe-commutation that are discussed and solved in the paper. Experimental results from a proof-of-concept 6kW laboratory scale prototype validate the practical feasibility and the operation of the MIMC.

Journal Article Type Article
Acceptance Date Mar 29, 2019
Online Publication Date Apr 9, 2019
Publication Date Apr 9, 2019
Deposit Date Apr 17, 2019
Publicly Available Date Apr 18, 2019
Journal IEEE Transactions on Power Electronics
Print ISSN 0885-8993
Electronic ISSN 1941-0107
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 34
Issue 12
Pages 11760-11773
Keywords Direct AC/AC converters, Isolated Matrix Converter, Solid-State Transformers, Venturini Modulation, Commutation, Bi-directional switches
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