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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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Capacitor balance issues of the diode-clamped multilevel inverter operated in a quasi two-state mode

Adam, Grain Philip and Finney, S.J. and Massoud, A. and Williams, B.W. (2008) Capacitor balance issues of the diode-clamped multilevel inverter operated in a quasi two-state mode. IEEE Transactions on Industrial Electronics, 55 (8). pp. 3088-3099. ISSN 0278-0046

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Abstract

A new operational mode for diode-clamped multilevel inverters termed quasi two-level operation is proposed. Such operation aims to avoid the imbalance problem of the dc-link capacitors for multilevel inverters with more than three levels and reduces the dc-link capacitance without introducing any significant voltage ripple at the dc-link nodes. The proposed operation can be generalized for any number of levels. The validity of the proposed multilevel inverter operational mode is confirmed by simulations and experiments on a prototype five-level diode-clamped inverter.