This report describes CSDL efforts on a NSF-sponsored study to conceptualize and develop advanced concepts for suspension and energy conversion systems for use in conjunction with flywheel energy storage. These flywheel and energy conversion studies were directed toward the utilization of flywheel energy storage for utility load-leveling during peak power periods, both at the residential and utility levels, for complementing windmill or photovoltaic systems, and for transportation systems. A detailed set of system requirements which would allow two-way power flow between a high-speed flywheel shaft and a 60-Az line was outlined. A study of existing conversion system types indicated that the system requirements could best be met with a new concept. Therefore, a special-purpose integrated rotating machine and power-switching stage were designed. Quantitative techniques were developed to analyze the energy conversion and control systems. An economic study of existing bearing types indicated that magnetic bearings have the greatest potential for development for use in stationary flywheel energy storage systems with long storage cycles, although a newly developed ball bearing would be superior for moving applications and some short storage cycle stationary applications. A special-purpose low-loss magnetic suspension system was designed which will allow efficient 24-hour cycle energy storage. A computer model of the flywheel and suspension system was developed to aid in the determination of critical suspension and control parameters and evaluation of system performance.

  • Corporate Authors:

    Draper (Charles Stark) Laboratory, Incorporated

    555 Technology Square
    Cambridge, MA  United States  02139
  • Authors:
    • Eisenhaure, D
    • Oberbeck, G
    • O'Dea, S
    • Stanton, W
  • Publication Date: 1977-11

Media Info

  • Pagination: 181 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00193775
  • Record Type: Publication
  • Source Agency: Energy Research Abstracts
  • Report/Paper Numbers: Final Rpt.
  • Files: TRIS
  • Created Date: May 26 1979 12:00AM