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Vector control of a modular multilevel matrix converter operating over the full output-frequency range

Diaz, Matias; Cardenas, Roberto; Espinoza, Mauricio; Hackl, Christoph M.; Rojas, Felix; Clare, Jon C.; Wheeler, Patrick

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Matias Diaz

Roberto Cardenas

Mauricio Espinoza

Christoph M. Hackl

Felix Rojas

Jon C. Clare


The Modular Multilevel Matrix Converter ( M 3 C ) is an ac-to-ac converter topology suitable for the control of high-power variable-speed drives. The control of this converter is complex, particularly when the two ac system frequencies are similar or identical because large voltage oscillations can be produced in the floating capacitors within the M 3 C . This paper proposes a new Vector Control System based on nested controllers to regulate the M 3 C over the full-range of frequencies. The proposed control scheme is especially useful to mitigate or eliminate the oscillations that arise when the frequencies are similar. An extensive discussion of the model and control of the M 3 C is presented in this work. The effectiveness of the proposed Vector Control System is demonstrated through simulation studies and experimental validation tests conducted with a 27-cell-5kW M 3 C prototype.

Journal Article Type Article
Acceptance Date Aug 27, 2018
Online Publication Date Sep 20, 2018
Publication Date 2019-07
Deposit Date Feb 8, 2019
Publicly Available Date Feb 11, 2019
Journal IEEE Transactions on Industrial Electronics
Print ISSN 0278-0046
Electronic ISSN 1557-9948
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 66
Issue 7
Pages 5102-5114
Keywords Voltage control; Capacitors; Oscillators; Control systems; Frequency control; Matrix converters; Topology
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