Direct current (DC) system flywheel energy storage technology can be used as a substitute for batteries for providing backup power to an uninterruptible power supply (UPS) system. Although the initial cost will usually be higher, flywheels offer a much longer life, reduced maintenance, a smaller footprint, and better reliability compared to a battery. The combination of these characteristics will generally result in a lower life-cycle cost for a flywheel compared to a battery. This paper describes the technology, its variations, and installation requirements, as well as provides application advice. One Federal application is highlighted as a “case study,” followed by an illustrative life-cycle cost comparison of batteries and flywheels. A list of manufacturers, with contact information is also provided.
Revised: January 17, 2011 |
Published: November 12, 2003
Citation
Brown D.R., and W.D. Chvala. 2003.Flywheel Energy Storage -- An Alternative to Batteries for UPS Systems. In Energy and High Performance Facility Sourcebook / Proceedings of the 26th World Energy Engineering Congress (WEEC)., edited by Katrina Buff, 487-497. Lilburn, Georgia:Fairmont Press.PNNL-SA-39377.