Wu, Y., Bingham, Chris, Peel, D. and Howe, D. (2001) Active magnetic bearings for a flywheel peak power buffer for electric vehicles. International Journal of Applied Electromagnetics and Mechanics, 15 (1). pp. 201-206. ISSN 1383-5416
Full text not available from this repository.
Item Type: | Article |
---|---|
Item Status: | Live Archive |
Abstract
The performance of electric vehicles may be improved significantly by incorporating a flywheel peak power buffer into the power-train. An annular carbon fibre composite flywheel rim offers a high specific energy capability, although a high rotational speed is necessary for a high stored energy, whilst operation in a vacuum is conducive to a low aerodynamic loss, and necessitates the use of magnetic bearings. The electromagnetic design of such a flywheel system is described, and a dynamic analysis that predicts the free vibration modes and frequencies, is presented. Finally, the magnetic bearing control system is described, and it is shown that the vibration damping capability of the bearings is such that natural vibration frequencies within the flywheel operating speed range can be accommodated, and performance objectives commensurate with operation in a vehicle drive-train can be achieved.
Additional Information: | The performance of electric vehicles may be improved significantly by incorporating a flywheel peak power buffer into the power-train. An annular carbon fibre composite flywheel rim offers a high specific energy capability, although a high rotational speed is necessary for a high stored energy, whilst operation in a vacuum is conducive to a low aerodynamic loss, and necessitates the use of magnetic bearings. The electromagnetic design of such a flywheel system is described, and a dynamic analysis that predicts the free vibration modes and frequencies, is presented. Finally, the magnetic bearing control system is described, and it is shown that the vibration damping capability of the bearings is such that natural vibration frequencies within the flywheel operating speed range can be accommodated, and performance objectives commensurate with operation in a vehicle drive-train can be achieved. |
---|---|
Keywords: | magnetic bearings, Hybrid Electric Vehicles, flywheel energy storage |
Subjects: | H Engineering > H600 Electronic and Electrical Engineering |
Divisions: | College of Science > School of Engineering |
ID Code: | 2905 |
Deposited On: | 16 Jul 2010 13:42 |
Repository Staff Only: item control page