A Three-Phase Modular Isolated Matrix Converter

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-restri...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2019-12, Vol.34 (12), p.11760-11773
Main Authors: Nasir, Usman, Costabeber, Alessandro, Wheeler, Patrick, Rivera, Marco, Clare, Jon
Format: Article
Language:English
Subjects:
Bidirectional switches
Bridge circuits
Commutation
Density measurement
direct ac–ac converters
Distribution management
isolated matrix converter
Low voltage
Matrix converters
Modular structures
Modulation
Power system measurements
solid-state transformers
Switches
Switching theory
Topology
venturini modulation
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Summary: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 low voltage (LV) or medium voltage (MV) future distribution networks. The topology under study utilizes bidirectional 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 transformers in each cell poses additional challenges for modulation and safe commutation that are discussed and solved in this paper. Experimental results from a proof-of-concept 6 kW laboratory scale prototype validate the practical feasibility and the operation of the MIMC.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2019.2909681