Modular Multilevel Converter leg-energy controller in rotating reference frame for voltage oscillations reduction

Gilbert Bergna Diaz 1 Jean-Claude Vannier 1 Pierre Lefranc 1 Amir Arzandé 1 E. Berne 2 P. Egrot 2 M. Molinas 3
1 E3S - Supélec Sciences des Systèmes [Gif-sur-Yvette]
2 EDF R&D - EDF R&D
3 NTNU - Norwegian University of Science and Technology [Trondheim]
Abstract : This work consists of the presentation of a regulation strategy capable of controlling the energy stored in the DC capacitors of the upper and lower arms of a Modular Multilevel Converter (MMC) for each phase. This is achieved by regulating the positive, negative and zero sequences in dqo coordinates of the differential current using a rotating reference frame at twice the fundamental value. Active and reactive components of the differential current are used to eliminate the oscillations of the three-phased leg-energy which reduces significantly the capacitor voltage oscillations, while the zero sequence component is used to regulate the whole system energy at a given value. All feed-forwards equations are demonstrated, and cross-coupled leg-energy terms are introduced.
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Conference papers
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Contributor : Stéphanie Douesnard <>
Submitted on : Thursday, December 13, 2012 - 1:57:17 PM
Last modification on : Saturday, September 22, 2018 - 1:15:27 AM

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Gilbert Bergna Diaz, Jean-Claude Vannier, Pierre Lefranc, Amir Arzandé, E. Berne, et al.. Modular Multilevel Converter leg-energy controller in rotating reference frame for voltage oscillations reduction. 2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG), Jun 2012, Aalborg, Denmark. pp.698-703, ⟨10.1109/PEDG.2012.6254078⟩. ⟨hal-00764825⟩

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