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Hybrid railway power conditioner based on half-bridge modular multilevel converter
Liu L.; Dai N.
Conference NameIEEE Energy Conversion Congress and Exposition (ECCE)
Source PublicationECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings
Conference DateSEP 18-22, 2016
Conference PlaceMilwaukee, WI
Author of SourceIEEE
PublisherIEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA

Hybrid railway power conditioner (HRPC) has been applied to compensating negative-sequence current, reactive power and harmonics in a traction power supply system. Single-phase back-to-back converter is used to implement power conditioning in a HRPC. Its operational voltage is lower than a conventional RPC since it is coupled to 25 kV feeder via a LC branch. However, multilevel converter was not used which is necessary if the HRPC is coupled to the feeder without transformer. A HRPC based on single-phase half-bridge back-to-back modular multilevel converter (MMC) is proposed in this paper. The center-split point of the DC bus is connected to one phase and provides compensating current. Since direct current tracking with hysteresis PWM is not applicable to MMC, proportional-integral (PI) current controller is selected to generate voltage reference. The circulating current is analyzed in detail and parameter design of the MMC is presented. The cell voltage balancing and dc bus voltage balancing of the MMC are studied. Simulation results are provided to verify the effectiveness of the proposed HRPC with its control method.

KeywordHalf Bridge Hybrid Railway Power Conditioner Modular Multilevel Converter Negative-sequence Current
URLView the original
Indexed BySCI
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Electrical & Electronic
WOS IDWOS:000400778403109
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Citation statistics
Cited Times [WOS]:3   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
AffiliationUniversidade de Macau
Recommended Citation
GB/T 7714
Liu L.,Dai N.. Hybrid railway power conditioner based on half-bridge modular multilevel converter[C]//IEEE:IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA,2016.
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