Design and Testing of a Flywheel Battery for a Transit Bus
1999-01-1159
03/01/1999
- Event
- Content
- The University of Texas at Austin Center for Electromechanics (UT-CEM) has designed and tested a flywheel energy storage system conventionally referred to as a flywheel battery (FWB) for power averaging on a hybrid electric transit bus. The system incorporates a high speed (40,000 rpm) 150 kW permanent magnet motor generator with magnetic bearings to levitate a 2 kWh composite flywheel. This paper summarizes: design goals, required operating parameters, system design, analysis completed prior to fabrication, and initial performance testing completed in the laboratory.The paper includes information on the motor/generator, power electronics, magnetic bearing sensors and controls, and FWB subsystems (including containment). Finally, recommendations for continued testing are made along with recommendations for improvements to the existing design.
- Pages
- 11
- Citation
- Hayes, R., Kajs, J., Thompson, R., and Beno, J., "Design and Testing of a Flywheel Battery for a Transit Bus," SAE Technical Paper 1999-01-1159, 1999, https://doi.org/10.4271/1999-01-1159.