RT Conference Proceedings T1 SiC modular multilevel converters: Sub-module voltage ripple analysis and efficiency estimations A1 Perez-Basante, Angel A1 Ceballos, Salvador A1 Pou, Josep A1 De Muro, Asier Gil A1 Pujana, Ainhoa A1 Ibáñez, Pedro AB Two important technical challenges associated with the Modular Multilevel Converter (MMC) are the reduction of the voltage ripple of the Sub-Module (SM) capacitors and the reduction of the converter losses. This paper conducts a study focused on these two topics. Firstly, the effect of a circulating current with a predefined second harmonic on the SM voltage ripple is assessed. Secondly, an efficiency study for two different MMCs, one with silicon (Si) and the other with silicon carbide (SiC) devices is carried out. Results suggest that a SiC MMC converter with a circulating current including a second harmonic represent a good solution since it achieves a reduction of the SM capacitors together with a high efficiency operation. PB Mesago PCIM GmbH SN 9783800736034 SN 2191-3358 YR 2014 FD 2014 LK https://hdl.handle.net/11556/1542 UL https://hdl.handle.net/11556/1542 LA eng NO Perez-Basante , A , Ceballos , S , Pou , J , De Muro , A G , Pujana , A & Ibáñez , P 2014 , SiC modular multilevel converters : Sub-module voltage ripple analysis and efficiency estimations . in Proceedings - PCIM Europe 2014 : International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management . PCIM Europe Conference Proceedings , Mesago PCIM GmbH , pp. 1418-1425 , International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2014 , Nuremberg , Germany , 20/05/14 . NO conference DS TECNALIA Publications RD 30 jul 2024