Review of flywheel based energy storage systems

Author

Peña-Alzola, R. ; Sebastián, R. ; Quesada, J. ; Colmenar, A.

Author_Institution

Dept. of Electr., Electron. & Control Eng. (DIEEC), Spanish Univ. for Distance Educ. (UNED), Madrid, Spain

fYear

2011

fDate

11-13 May 2011

Firstpage

1

Lastpage

6

Abstract

In flywheel based energy storage systems, a flywheel stores mechanical energy that interchanges in form of electrical energy by means of an electrical machine with a bidirectional power converter. Flywheel based energy storage systems are suitable whenever numerous charge and discharge cycles (hundred of thousands) are needed with medium to high power (kW to MW) during short periods (seconds). The materials for the flywheel, the type of electrical machine, the type of bearings and the confinement atmosphere determine the energy efficiency (>;85%) of the flywheel based energy storage systems. Monitoring of state of charge is simple and reliable as only spinning speed is needed. Flywheel based energy storage systems are commercially available with more than a dozen of manufacturers. Amongst the applications of flywheel based energy storage systems are: uninterruptible power supplies, hybrid power systems, power grids feeding trains, hybrid vehicles and space satellites.

Keywords

electric machines; flywheels; machine bearings; power convertors; bearings; bidirectional power converter; electrical energy; electrical machine; energy storage systems; flywheel; hybrid power systems; hybrid vehicles; mechanical energy; power grids feeding trains; space satellites; spinning speed; uninterruptible power supplies; Batteries; Discharges; Flywheels; Materials; Spinning; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering, Energy and Electrical Drives (POWERENG), 2011 International Conference on

Conference_Location

Malaga

ISSN

2155-5516

Print_ISBN

978-1-4244-9845-1

Electronic_ISBN

2155-5516

Type

conf

DOI

10.1109/PowerEng.2011.6036455

Filename

6036455