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Title: A supercapacitor-based method to mitigate overvoltage and recycle the energy of pantograph arcing in the high speed railway
Authors: Xu, C 
Chen, Z 
Cheng, KWE 
Wang, X 
Ho, HF 
Keywords: High speed railway
Pantograph arcing
Issue Date: 2019
Publisher: Molecular Diversity Preservation International (MDPI)
Source: Energies, 2019, v. 12, no. 7, 1214 How to cite?
Journal: Energies 
Abstract: The pantograph arcing phenomenon may shorten the service life of a pantograph and even destroy onboard devices and instruments, due to the irregular motions of the train and the intermittent line–pantograph disconnection. This paper points out that abrupt inductive energy from the magnetizing inductance of the traction transformer can lead to an electromagnetic transient process with unexpected overvoltage across it. Further, a supercapacitor-based power electronic system is proposed, which can not only redirect the inductive energy to the supercapacitor pack through bidirectional converters but also mitigate the overvoltage across the main electrical equipment when pantograph arcing occurs. Simulation results show the overvoltage could be reduced and the energy stored in the supercapacitor which could also be used to provide energy for sensors or other devices.
EISSN: 1996-1073
DOI: 10.3390/en12071214
Rights: © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
The following publication Xu C, Chen Z, Cheng KWE, Wang X, Ho HF. A Supercapacitor-Based Method to Mitigate Overvoltage and Recycle the Energy of Pantograph Arcing in the High Speed Railway. Energies. 2019; 12(7):1214 is available at
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