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Pole-restraining control for npc three-level inverter

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5 Author(s)
Seifert, M. ; Avasition GmbH, Dortmund, Germany ; Heising, C. ; Bartelt, R. ; Staudt, V.
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State-of-the-art control approaches often neglect the time-variant characteristics of power-electronic systems in favour of a time-averaged approach. In consequence, the resulting system is partly instable, thus, not optimally controlled. The pole-restraining control (PRC) removes the inherent instability, giving considerably improved dynamic behaviour. In this paper, the PRC approach is applied to the 3-level npc converter topology. The major extension is related to the instantaneous DC-link voltage balancing. These improvements are demonstrated for three-phase Active Front Ends (AFE) in npc three-level topology.using simulation results.

Published in:

Energy Conference and Exhibition (ENERGYCON), 2012 IEEE International

Date of Conference:

9-12 Sept. 2012