Browse > Article
http://dx.doi.org/10.5050/KSNVE.2010.20.8.717

Design of Low Power Consumption Hybrid Magnetic Bearing for Flywheel Energy Storage System  

Kim, Woo-Yeon (한국과학기술연구원 에너지메카닉스센터)
Lee, Jong-Min (한국과학기술연구원 에너지메카닉스센터)
Bae, Yong-Chae (한국전력공사 전력연구원)
Kim, Seung-Jong (한국과학기술연구원 에너지메카닉스센터)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.20, no.8, 2010 , pp. 717-726 More about this Journal
Abstract
For the application into a 1 kWh flywheel energy storage system(FESS), this paper presents the design scheme of radial and axial hybrid magnetic bearings which use bias fluxes generated by permanent magnets. In particular, the axial hybrid magnetic bearing is newly proposed in this paper, in which a permanent magnet is arranged in axial direction so that it can support the rotor weight as well as provide a bias flux for axial magnetic bearing. Such hybrid magnetic bearings consume very low power, compared with conventional electromagnetic bearings. In this paper, to stably support a 140 kg flywheel rotor without contact, design process is explained in detail, and magnetic circuit analysis and three-dimensional finite element analysis are carried out to determine the design parameters and predict the performance of the magnetic bearings.
Keywords
Hybrid Magnetic Bearing; Flywheel Energy Storage System; Permanent Magnetic Bearing; Outer-rotor Type;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Allaire, P. E., et al., 1990, “Permanent Magnet Biased Magnetic Bearings – Design, Construction and Testing,” Proceedings of the 2nd Int’l Symp. on Magnetic Bearings, Tokyo, Japan, July 12-14.
2 Fukata, S. and Yutani, K., 1998, “Characteristics of Electromagnetic Systems of Magnetic Bearings Biased with Permanent Magnets,” Proceedings of the 6th Int’l Symp. on Magnetic Bearings, USA, August 5-7.
3 No, S. K., Kim, J. S. and Choi, S. K., 1995, “PM/EM Hybrid Magnetic Bearing System for Flywheel Energy System,” Proceedings of the KSAS Annual Fall Conference, pp. 360-363.
4 Choi, S. K., Kim, Y. C., Yoon, K. C. and Kyung, J. H., 1998, “Rotor Dynamic Design and Analysis of the Rotor-bearing System of a 500Wh Flywheel Energy Storage Device,” Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 8, No. 1, pp. 81-86.
5 Kim, S.-J. and Okada, Y., 2001, “A Small Disk-type Hybrid Self-bearing Motor,” Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 11, No. 8, pp. 338-348.   과학기술학회마을