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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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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.