Rotational Loss Analysis of Thrust Bearing using a Superconducting Coil for Flywheel Energy Storage

被引：1
|
作者：
Ohsaki, H. [1 ]
Komi, Y. [1 ]
Sekino, M. [1 ]
Kubota, M. [2 ]
Yamauchi, Y. [2 ]
机构：
[1] Univ Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778561, Japan
[2] Cent Japan Railway Co, Aichi 4850801, Japan
来源：
2008 INTERNATIONAL SYMPOSIUM ON POWER ELECTRONICS, ELECTRICAL DRIVES, AUTOMATION AND MOTION, VOLS 1-3 | 2008年
关键词：
eddy current loss; flywheel energy storage; superconducting coil; thrust bearing;
D O I：
10.1109/SPEEDHAM.2008.4581205
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A 50 kWh/1 MW class flywheel energy storage system has been developed. The system has a steel flywheel, a thrust bearing using a superconducting coil and iron cores, and active magnetic bearings for stabilization in the radial direction. FEM analysis of electromagnetic characteristics of the thrust bearing was performed for studying rotational losses caused by eddy currents induced in the rotor core. The results indicate that under the force balance condition between vertical magnetic force and rotor weight the eddy current loss is slightly dependent on the superconducting coil current, and therefore the rotor weight almost determines the eddy current loss for a given lateral displacement.
引用
收藏
页码：1341 / +
页数：2
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