Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)

  • 2001.05a
  • /
  • Pages.514-520
  • /
  • 2001
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

High Speed Operating Test of a 300Wh Flywheel Energy Storage System Using Superconductor Bearings

초전도베어링을 이용한 300 Wh급 플라이휠 에너지저장장치의 고속운전시험

  • 김영철 (한국기계연구원 회전체연구그룹) ;
  • 최상규 (한국기계연구원 회전체연구그) ;
  • 성태현 (한국전력연구원 전력계통연구) ;
  • 이준성 (한국전력연구원 전력계통연구) ;
  • 한영희 (한국전력연구원 전력계통연구실)
  • Published : 2001.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

A 300Wh class flywheel energy storage system using high Tc superconductor bearings(HTC SFES) is being developed by KIMM and KEPRI. HTC SFES consists of a flywheel rotor, superconductor bearings, a motor/generator and its controller, touch-down bearings, vacuum chamber, etc. Stiffness and damping values of superconductor bearings were experimentally estimated to be 67,700N/m and 29Ns/m respectively. The present HTC SFES was designed to have maximum operating speed of 33000 rpm, which is far above 2 rigid body mode critical speeds of 645rpm and 1,275rpm. Leaf-spring type touch-down bearing were utilized to have the system pass safely through the system critical speeds. It has been experimentally verified that the system can run stably up to 28,000 rpm so that HTC SFES is now expected to reach up to its maximum design speed of 33,000rpm without any difficulties. The Halbach array motor & generator has also been proven its effectiveness on transferring electrical energy to a rotaing composite flywheel in kinetic form.

Keywords