Browse > Article

Design of 5kWh Flywheel Energy Storage System to Improve Dynamics  

Park, Cheol-Hoon (Intelligent Manufacturing Systems Research Division, KIMM)
Choi, Sang-Kyu (Intelligent Manufacturing Systems Research Division, KIMM)
Ham, Sang-Yong (Intelligent Manufacturing Systems Research Division, KIMM)
Lee, Sung-Whee (Intelligent Manufacturing Systems Research Division, KIMM)
Yun, Dong-Won (Intelligent Manufacturing Systems Research Division, KIMM)
Han, Young-Hee (Superconductivity & Applications Group, KEPRI)
Publication Information
Journal of the Korean Society for Precision Engineering / v.25, no.10, 2008 , pp. 99-106 More about this Journal
Abstract
5kWh FESS(Flywheel Energy Storage System) using AMB(Active Magnetic Bearing) has been under development and 1st trial system has been finished and run the operating test. Unfortunately, the test result was not satisfactory because FESS could increase the rotational speed up to 9,000 rpm only although the target rotational speed is 18,000rpm. It's because 1st bending mode frequency of flywheel shaft was too low and imbalance response was too big. To achieve the target speed, 1st bending mode and imbalance response must be improved and the whole FESS needed to be designed again. This paper presents the newly designed FESS and what has been changed from the 1st trial FESS to improve 1st bending mode and imbalance response. The experimental results to see how much 1st bending mode frequency was improved are presented, too.
Keywords
FESS; AMB; Rotor Dynamics; Imbalance Response; Xlrotor;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Park, C. H., Choi, S. K., Lee, J. P. and Han, Y. H., "On the Dynamic Behavior of a 5kWh FESS Mounted on AMBs," the 11th International Conference on Mechatronics Technology, pp. 416-420, 2007
2 Vance, J. M., "RotorDynamics of TurboMachinery," A Wiley-Interscience Publication, pp. 116-130, 1988
3 Ahrens, M., Kucera, L. and Larsonneur, R., "Performance of a magnetically suspended flywheel energy storage device," IEEE Transactions on control systems technology, Vol. 4, No. 5, pp. 404-502, 1996   DOI   ScienceOn
4 EPRI-DOE Handbook Supplement, "Energy Storage for Gird Connected Wind Generation Applications," EPRI, ch. 13-14, 2004
5 Hawkins, L. A., Murphy, B. T. and Kajs, J., "Analysis and Testing of a magnetic bearing energy storage flywheel with gain-scheduled, MIMO control," Proceedings of ASME TURBOEXPO2000, 2000-GT-405, 2000