Electronic Science and Technology ›› 2022, Vol. 35 ›› Issue (5): 74-80.doi: 10.16180/j.cnki.issn1007-7820.2022.05.012

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Control Strategy of Supercapacitor Based on Train Braking Energy Recovery

ZENG Guang1,2,YANG Jian1,SONG Ruigang1   

  1. 1. School of Urban Railway Transportation,Shanghai University of Engineering Science,Shanghai 201600,China
    2. Shanghai MetroIT Co., Ltd.,Shanghai 200233,China
  • Received:2020-11-24 Online:2022-05-25 Published:2022-05-27
  • Supported by:
    High-Speed Railway Joint Fund(U1834201)


In view of the problem of recovery and utilization of energy feedback from train electric braking, this study analyzes train operation characteristics and focuses on the relationship between train operation process and traction network voltage fluctuations. Combining the dynamic mismatch between the power supplied by the traction substation and the electric power of the train, a vehicle-mounted braking energy recovery and utilization system is adopted, and a super capacitor charging and discharging control strategy based on the dynamic change of the electric power of the train is proposed. The program is mainly composed of super capacitor series-parallel energy storage units and bidirectional DC-DC converters. MATLAB is used for modeling and simulation analysis. The simulation experiment results show that the control strategy can effectively recover and utilize the braking energy of the train while restraining the voltage fluctuation of the traction network, which provides an effective solution for the recovery and utilization of the braking energy of the train.

Key words: electric braking, energy recovery, super capacitor, converter, voltage fluctuation, energy storage, charge and discharge, control strategy

CLC Number: 

  • TP271