Flywheel peak power buffer for electric/hybrid vehicles

Author

Howe, D. ; Mason, P. ; Mellor, P.H. ; Wu, Z.Y. ; Atallah, K.

Author_Institution

Dept. of Electron. & Electr. Eng., Sheffield Univ., UK

fYear

1999

fDate

36281

Firstpage

508

Lastpage

510

Abstract

Kinetic energy storage systems have considerable potential for use as peak power buffers in drive-trains for electric and hybrid vehicles, as a means of enhancing their performance and improving efficiency. The paper describes a flywheel system based around a cylindrical fibre composite rim, which is supported on magnetic bearings and incorporates an integral motor/generator. Particular consideration is given to minimising power losses, by appropriate choice of magnetic circuit design and magnetic materials, so as to obtain a high `round-trip´ efficiency and limit the temperature rise of the rim

Keywords

brushless machines; electric generators; electric vehicles; flywheels; magnetic bearings; permanent magnet machines; power supplies to apparatus; traction motor drives; cylindrical fibre composite rim; drive-trains; electric/hybrid vehicles; flywheel peak power buffer; integral motor/generator; kinetic energy storage systems; magnetic bearings; magnetic circuit design; magnetic materials; performance; power losses minimisation; rim temperature rise; round-trip efficiency; Buffer storage; Energy storage; Flywheels; Hybrid electric vehicles; Kinetic energy; Magnetic circuits; Magnetic levitation; Magnetic materials; Optical buffering; Vehicle driving;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Machines and Drives, 1999. International Conference IEMD '99

Conference_Location

Seattle, WA

Print_ISBN

0-7803-5293-9

Type

conf

DOI

10.1109/IEMDC.1999.769160

Filename

769160