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Hybrid railway power conditioner based on chopper cell modular multilevel converter with four legs
Liu L.2; Dai N.2; Zeng X.1
2017-10-02
Conference Name20th International Conference on Electrical Machines and Systems (ICEMS)
Source Publication2017 20th International Conference on Electrical Machines and Systems, ICEMS 2017
Conference Date11-14 Aug. 2017
Conference PlaceSydney, NSW
CountryAustralia
Author of SourceIEEE
PublisherIEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Abstract

A hybrid railway power conditioner (HRPC) is developed based on chopper cell modular multilevel converter (MMC) with four legs. The HRPC is able to compensate unbalance currents and reactive power. Its operational voltage at one phase is much lower than the voltage of the railway supply system. This phase of the MMC is connected to the 27.5kV bus without coupling transformer by using a MMC. The application of the MMC to the HRPC also brings the benefits of lower current distortion, removing extra filtering capacitor as well as better expansion and flexibility. The circulating current control of the MMC is studied in detail since bulky active power is transferred from one phase to the other phase in the back-to-back MMC. Simulation results are provided to show the validity of the HRPC and its control.

KeywordModular Multilevel Converter Railway Power Conditioner Unbalance
DOI10.1109/ICEMS.2017.8055962
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000425241600048
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Citation statistics
Document TypeConference paper
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.Zhuhai Wanlida Electrical Automation Co., Ltd.
2.Universidade de Macau
Recommended Citation
GB/T 7714
Liu L.,Dai N.,Zeng X.. Hybrid railway power conditioner based on chopper cell modular multilevel converter with four legs[C]//IEEE:IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA,2017.
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