Frequency reduction schemes for back-to-back connected, diode-clamped multilevel converters

Minshull, S. and Bingham, Chris and Stone, D. A. and Foster, M. P. (2010) Frequency reduction schemes for back-to-back connected, diode-clamped multilevel converters. Power Electronics, IET , 3 (1). pp. 65-74. ISSN 1755-4535

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Official URL: http://dx.doi.org/10.1049/iet-pel.2008.0215

Abstract

Two new switching schemes for back-to-back connected diode-clamped multilevel converters that reduce the devices switching frequency while maintaining capacitor balancing are presented. Comparisons are made between a previously reported `optimal` balancing strategy and the two proposed switching techniques using data gathered from a prototype five-level, back-to-back connected, diode-clamped multilevel converter. The proposed schemes are shown to allow as much as 35` reduction in switching frequency when compared to the optimal balancing case while also balancing the voltages across the series connected DC-link capacitors. The back-to-back connected, multilevel converter excites a permanent magnet synchronous motor to obtain the experimental data and verify the proposed switching schemes.

Item Type:Article
Additional Information:Two new switching schemes for back-to-back connected diode-clamped multilevel converters that reduce the devices switching frequency while maintaining capacitor balancing are presented. Comparisons are made between a previously reported `optimal` balancing strategy and the two proposed switching techniques using data gathered from a prototype five-level, back-to-back connected, diode-clamped multilevel converter. The proposed schemes are shown to allow as much as 35` reduction in switching frequency when compared to the optimal balancing case while also balancing the voltages across the series connected DC-link capacitors. The back-to-back connected, multilevel converter excites a permanent magnet synchronous motor to obtain the experimental data and verify the proposed switching schemes.
Keywords:multilevel energy converters
Subjects:H Engineering > H660 Control Systems
Divisions:College of Science > School of Engineering
ID Code:2902
Deposited By:INVALID USER
Deposited On:16 Jul 2010 08:38
Last Modified:18 Jul 2011 16:28

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