SiC modular multilevel converters: Sub-module voltage ripple analysis and efficiency estimations

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URI: https://hdl.handle.net/11556/1542
ISSN: 2191-3358
ISBN: 9783800736034
Publication date
2014
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Mesago PCIM GmbH
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Abstract
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.
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Electrical and Electronic Engineering , SDG 7 - Affordable and Clean Energy
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conference output
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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 .
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