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Open AccessArticle

Flywheel vs. Supercapacitor as Wayside Energy Storage for Electric Rail Transit Systems

1
Electrical Engineering Department, Grove School of Engineering, City University of New York, City College, New York, NY 10017, USA
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Department of Electrical Engineering, Faculty of Engineering, Minia University, Minia 61512, Egypt
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Authors to whom correspondence should be addressed.
Inventions 2019, 4(4), 62; https://doi.org/10.3390/inventions4040062
Received: 13 June 2019 / Revised: 18 September 2019 / Accepted: 19 September 2019 / Published: 10 October 2019
Energy storage technologies are developing rapidly, and their application in different industrial sectors is increasing considerably. Electric rail transit systems use energy storage for different applications, including peak demand reduction, voltage regulation, and energy saving through recuperating regenerative braking energy. In this paper, a comprehensive review of supercapacitors and flywheels is presented. Both are compared based on their general characteristics and performances, with a focus on their roles in electric transit systems when used for energy saving, peak demand reduction, and voltage regulation. A cost analysis is also included to provide initial guidelines on the selection of the appropriate technology for a given transit system. View Full-Text
Keywords: electric rail transit system; energy storage system; flywheel; peak demand reduction; supercapacitor; voltage regulation electric rail transit system; energy storage system; flywheel; peak demand reduction; supercapacitor; voltage regulation
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MDPI and ACS Style

Khodaparastan, M.; Mohamed, A. Flywheel vs. Supercapacitor as Wayside Energy Storage for Electric Rail Transit Systems. Inventions 2019, 4, 62.

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