RT Conference Proceedings
T1 Minimization of the capacitor voltage fluctuations of a modular multilevel converter by circulating current control
A1 Picas, R.
A1 Pou, J.
A1 Ceballos, S.
A1 Agelidis, V. G.
A1 Saeedifard, M.
AB The modular multilevel converter (MMC) is one of the most potential converter topologies for medium/high power/voltage applications. One of the main technical challenges of an MMC is to eliminate/minimize the circulating currents within the legs. Circulating currents, if not properly controlled, increase the amplitude of capacitor voltage variations, rating values of the converter components and converter losses. This paper proposes a closed-loop circulating current control strategy for an MMC to specifically minimize the amplitude of capacitor voltage variations. The proposed strategy is based on adding an offset signal to the modulating signal of each arm. To minimize the amplitude of the capacitor voltage oscillations, an optimal circulating current component is determined and used as a reference signal for the current control of each MMC leg. Performance of the proposed control strategy is evaluated based on simulation studies in the MATLAB/Simulink environment. The reported study results demonstrate effectiveness of the proposed strategy to reduce the amplitude of the capacitor voltage oscillations.
SN 9781467324212
YR 2012
FD 2012
LK https://hdl.handle.net/11556/1603
UL https://hdl.handle.net/11556/1603
LA eng
NO Picas , R , Pou , J , Ceballos , S , Agelidis , V G & Saeedifard , M 2012 , Minimization of the capacitor voltage fluctuations of a modular multilevel converter by circulating current control . in Proceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society . , 6388984 , IECON Proceedings (Industrial Electronics Conference) , pp. 4985-4991 , 38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012 , Montreal, QC , Canada , 25/10/12 . https://doi.org/10.1109/IECON.2012.6388984
NO conference
DS TECNALIA Publications
RD 28 jul 2024