Compensation of non-linearities in diode-clamped multilevel converters

Minshull, S. and Bingham, Chris and Stone, D. A. and Foster, M. P. (2010) Compensation of non-linearities in diode-clamped multilevel converters. Industrial Electronics, IEEE Transactions on , 57 (8). pp. 2651-2658. ISSN 0278-0046

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Compensation of non-linearities in diode-clamped multilevel converters
The application of multilevel converters for exciting permanent magnet machines with low-phase inductance to DC-link voltage ratios facilitates a reduction in high frequency switching harmonics. However, converter non-linearities and, in-particular, on-state device voltage drops, create additional low-frequency harmonics. This paper therefore proposes a generic compensation scheme to accommodate the effects of such converter non-linearities and, in so doing, improve the harmonic quality of the machine phase currents. Experimental results gathered from a prototype 5-level diode clamped converter validate the benefits of the proposed scheme by showing quantitative reductions in low frequency harmonics.
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Full text URL: http://dx.doi.org/10.1109/TIE.2009.2023631

Abstract

The application of multilevel converters for exciting permanent magnet machines with low-phase inductance to DC-link voltage ratios facilitates a reduction in high frequency switching harmonics. However, converter non-linearities and, in-particular, on-state device voltage drops, create additional low-frequency harmonics. This paper therefore proposes a generic compensation scheme to accommodate the effects of such converter non-linearities and, in so doing, improve the harmonic quality of the machine phase currents. Experimental results gathered from a prototype 5-level diode clamped converter validate the benefits of the proposed scheme by showing quantitative reductions in low frequency harmonics.

Item Type:Article
Keywords:multilevel energy converters, Dead-time compensation, Permanent magnet synchronous motor, Space vector modulation
Subjects:H Engineering > H600 Electronic and Electrical Engineering
Divisions:College of Science > School of Engineering
ID Code:2868
Deposited By:INVALID USER
Deposited On:13 Jul 2010 15:11
Last Modified:28 Aug 2014 09:24

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