Multi-Port and -Functional Power Conditioner and Its Control Strategy with Renewable Energy Access for a Railway Traction System

Fujun Ma, Yulin Kuang, Zhengwen Wang, Gelin Huang, Dexing Kuang and Cheng Zhang
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Fujun Ma: College of Electrical and Information Engineering, Hunan University, Changsha 410000, China
Yulin Kuang: College of Electrical and Information Engineering, Hunan University, Changsha 410000, China
Zhengwen Wang: State Grid Changde Electric Power Company, Changde 415000, China
Gelin Huang: College of Electrical and Information Engineering, Hunan University, Changsha 410000, China
Dexing Kuang: College of Electrical and Information Engineering, Hunan University, Changsha 410000, China
Cheng Zhang: College of Electrical and Information Engineering, Hunan University, Changsha 410000, China

Energies, 2021, vol. 14, issue 19, 1-20

Abstract: To relieve the contradiction between supply and demand, a multi-port power conditioner (MP-PC) and control strategy with renewable energy access for a railway traction system is presented, which is mainly composed of full-bridge-based MMC and isolated DC/DC converters. As for the full-bridge-based MMC, the equivalent model is established and its novel voltage control method is proposed, which can provide a medium/low-voltage DC-link. A renewable energy system is connected to the system through the DC-link, so the MP-PC can achieve on-site consumption and balance between the load power and output power of RESs. Meanwhile, with the proposed control strategy, MP-PC can achieve three-phase power balance control and improve the operation performance of the railway traction system. Finally, the traction power platform and simulation model are established in the lab, and the topology and control strategy of MP-PC are verified effectively.

Keywords: multi-port power conditioner; railway traction system; renewable energy system; power quality; feedforward control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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