Peak power reduction and energy efficiency improvement with the superconducting flywheel energy storage in electric railway system

Hansang Lee, Seungmin Jung, Yoonsung Cho, Donghee Yoon, Gilsoo Jang

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

This paper proposes an application of the 100 kWh superconducting flywheel energy storage systems to reduce the peak power of the electric railway system. The electric railway systems have high-power characteristics and large amount of regenerative energy during vehicles' braking. The high-power characteristic makes operating cost high as the system should guarantee the secure capacity of electrical equipment and the low utilization rate of regenerative energy limits the significant energy efficiency improvement. In this paper, it had been proved that the peak power reduction and energy efficiency improvement can be achieved by using 100 kWh superconducting flywheel energy storage systems with the optimally controlled charging or discharging operations. Also, economic benefits had been assessed.

Original languageEnglish
Pages (from-to)246-249
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume494
DOIs
Publication statusPublished - 2013

Keywords

  • (SFES)
  • Electric railway system
  • Peak power reduction
  • Regenerative energy
  • Superconducting flywheel energy storage

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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