Operational characteristics of energy storage high temperature superconducting flywheels considering time dependent processes

Istvan Vajda, Zalan Kohari, Tamas Porjesz, Laszlo Benko, V. Meerovich, Sokolovsky, W. Gawalek

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Technical and economical feasibilities of short-term energy storage flywheels with high temperature superconducting (HTS) bearing are widely investigated. It is essential to reduce the ac losses caused by magnetic field variations in HTS bulk disks/rings (levitators) used in the magnetic bearings of flywheels. For the HTS bearings the calculation and measurement of the magnetic field distribution were performed. Effects like eccentricity, tilting were measured. Time dependency of the levitation force following a jumpwise movement of the permanent magnet was measured. The results were used to setup an engineering design algorithm for energy storage HTS flywheels. This algorithm was applied to an experimental HTS flywheel model with a disk type permanent magnet motor/generator unit designed and constructed by the authors. A conceptual design of the disk-type motor/generator with radial flux is shown.

Original languageEnglish
Pages (from-to)1500-1505
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume372-376
Issue numberPART 3
DOIs
Publication statusPublished - Aug 1 2002

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Keywords

  • Energy storage
  • Flywheel
  • Superconductors

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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