A compact HTS 5 kWh/250 kW flywheel energy storage system

被引：74

作者：

Werfel, Frank N. ^{[1
]}

Floegel-Delor, Uta

Riedel, Thomas

Rothfeld, Rolf

Wippich, Dieter

Goebel, Bernd

Reiner, Gerhard

Wehlau, Niels

机构：

[1] Adelwitz Technol Zentrum GmbH ATZ, Arzberg, Germany

[2] L 3 Commun Magnet Motor GmbH, D-82319 Starnberg, Germany

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2007年 / 17卷 / 02期

关键词：

damping; flywheel; HTS bearing; losses; stiffness;

D O I：

10.1109/TASC.2007.899252

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Flywheel energy storage systems (FESS) are expected to contribute to uninterruptible power supplies (UPS) and power quality tasks significantly. We present design and the component results of a compact 5 kWh/250 kW HTS flywheel whereby the rotor will be totally magnetically stabilized. The design is optimized for highly integrated functionality of rotor body, generator/motor and bearings. The heart of the FESS is an ironless; high power PM generator/motor delivering 250 kW. An advanced flywheel body manufactured from graphite fiber is stabilized by two magnetic bearings. A prototype 200 mm HTS bearing has been constructed and tested up to a load of 1 ton axially and 0.47 ton radially capable to carry the rotor weight of about 0.5 t. With a coefficient of friction (COF) of about 10(-6) the rotational drag was low. A passive PM bearing giving 80 N/mm radial stiffness/per pole was studied. HTS-PM damping response dependent on the temperature shows Lehr factors of 5-10% damping between 50 and 80 K. Eddy current dampers. could support rotor dynamic stability.

引用

页码：2138 / 2141

页数：4

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