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access icon free Modular multilevel converters technology: a comprehensive study on its topologies, modelling, control and applications

© The Institution of Engineering and Technology
Received 11/01/2018, Accepted 01/11/2018, Revised 24/07/2018, Published 02/11/2018

A modular multilevel converter (MMC) is one of the perfect topologies for high power and medium-/high-voltage energy conversion systems. The MMC has attractive features such as modularity, voltage and current scalability, transformerless operation, fault blocking capability, reduced filter size, a reduced ripple of the output current, high efficiency, and low expense on redundancy. These features attracted industries over the past few years, notable research has been carried out on MMC topologies, their operation, and control. This study presents a review of MMC topologies and their mathematical models. Furthermore, their control schemes (classical as well as model predictive controls) and modulation techniques are discussed. Finally, MMC applications and their future challenges are highlighted.

Inspec keywords: power convertors; mathematical analysis

Other keywords: reduced filter size; ripple reduction; medium-high-voltage energy conversion systems; model predictive control schemes; modulation technique; filter size reduction; modular multilevel converter technology; mathematical models; fault blocking capability; MMC topology applications; transformerless operation

Subjects: Mathematical analysis; Mathematical analysis; Power convertors and power supplies to apparatus; Control of electric power systems

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http://iet.metastore.ingenta.com/content/journals/10.1049/iet-pel.2018.5734
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