Improving efficiency of flywheel energy storage system with a new system configuration

Author

Kim, Wan Ho ; Kim, Jong Soo ; Raek, J.W. ; Ryoo, H.J. ; Rim, Geun Hie

Author_Institution

Korea Electrotechnol. Res. Inst., Changwon, South Korea

Volume

1

fYear

1998

fDate

17-22 May 1998

Firstpage

24

Abstract

A novel flywheel energy storage system is proposed in this study. The converter for the flywheel energy storage system is composed of an AC/DC, a DC/AC and a motor/generator converter. In motoring mode (the line is on), the AC/DC converter lets the system deliver sinusoidal input current and boosts the DC link voltage. In generating mode (the line is off), the DC/AC supplies sinusoidal voltage to load. The Halbach array machine is selected for the design of a three-phase motor/generator for the flywheel energy storage system. The energy storage system consists of a composite wheel and a magnetic bearing resulting in the reduction of the system loss

Keywords

AC generators; AC motors; AC-DC power convertors; DC-AC power convertors; flywheels; AC/DC converter; DC link voltage boosting; DC/AC converter; Halbach array machine; composite wheel; flywheel energy storage system; magnetic bearing; motor/generator converter; motoring mode; sinusoidal input current; system loss reduction; three-phase motor/generator; AC generators; AC motors; Analog-digital conversion; DC generators; DC motors; DC-DC power converters; Energy storage; Flywheels; Voltage; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE

Conference_Location

Fukuoka

ISSN

0275-9306

Print_ISBN

0-7803-4489-8

Type

conf

DOI

10.1109/PESC.1998.701874

Filename

701874