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dc.contributor.authorHe, Xiaoqiongen_US
dc.contributor.authorPeng, Junen_US
dc.contributor.authorHan, Pengchengen_US
dc.contributor.authorLiu, Zien_US
dc.contributor.authorGao, Shibinen_US
dc.contributor.authorWang, Pengen_US
dc.identifier.citationHe, X., Peng, J., Han, P., Liu, Z., Gao, S., & Wang, P. (2019). A novel advanced traction power supply system based on modular multilevel converter. IEEE Access, 7, 165018-165028. doi:10.1109/access.2019.2949099en_US
dc.description.abstractDue to the attractive advantages such as modularity, scalability and excellent power quality of modular multilevel converter (MMC), converters based on MMC could be a promising alternative solution for traction transformer. A novel MMC-based advanced co-phase traction power supply system is proposed in this paper to solve power quality issues and eliminate the neutral sections in the traditional traction power supply system. And in the proposed system, a DC power transmission system is designed, which provides convenient access for distributed energies benefiting the utilization of the natural resources such as solar energy and wind energy along railways. In order to ensure the normal operation of the proposed system, nearest-level modulation considering voltage balancing is designed for MMCs. The mathematic model three-phase MMC-based rectifier is derived in detail. Based on the mathematic model, dual current-loop control is designed for the rectifier. Besides, the parallel operating traction substations suffer circulating current issue. A droop control combining with double closed-loop control is designed to deal with the problem. The correctness and feasibility of the system and its modulation and control strategies is verified through simulation and a small-scale experiment.en_US
dc.relation.ispartofIEEE Accessen_US
dc.rights© 2019 IEEE. This journal is 100% open access, which means that all content is freely available without charge to users or their institutions. All articles accepted after 12 June 2019 are published under a CC BY 4.0 license, and the author retains copyright. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, as long as proper attribution is given.en_US
dc.subjectEngineering::Electrical and electronic engineeringen_US
dc.titleA novel advanced traction power supply system based on modular multilevel converteren_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsElectrified Railwayen_US
dc.subject.keywordsTraction Power Supply Systemen_US
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