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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

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Modular multilevel inverter : pulse width modulation and capacitor balancing technique

Adam, Grain Philip and Anaya-Lara, O. and Burt, G.M. and Telford, D. and Williams, B.W. and McDonald, J.R. (2010) Modular multilevel inverter : pulse width modulation and capacitor balancing technique. IET Power Electronics, 3 (5). pp. 702-715. ISSN 1755-4535

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Abstract

Modular multilevel inverters have been proposed as a potential replacement for diode-clamped inverters in high-voltage, high-power applications as they can be extended to any number of levels without introducing significantly more complexity to the control system. This study discusses in detail the principle of operation, carrier-based pulse width modulation and a capacitors voltage balancing technique for three-level and five-level modular inverters. The modulation and balancing strategy presented are confirmed by simulations and the results are discussed.