Title :
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
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;
Conference_Titel :
Electric Machines and Drives, 1999. International Conference IEMD '99
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5293-9
DOI :
10.1109/IEMDC.1999.769160
