Progress in Superconductivity

The Korean Superconductivity Society (한국초전도학회)
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Experimental Evaluation of Superconductor Flywheel Energy Storage System with Hybrid Type Active Magnetic Bearing

하이브리드 AMB를 포함한 초전도 플라이휠 에너지 저장장치의 실험평가

  • Lee, J.P. (Kyungnam College of Information & Technology) ;
  • Kim, H.G. (Kyungnam College of Information & Technology) ;
  • Han, S.C. (Korea Electric Power Research Institute)
  • Received : 2012.03.16
  • Accepted : 2012.04.11
  • Published : 2012.04.30
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Abstract

In this paper, we designed Active Magnetic Bearing (AMB) for large scale Superconductor Flywheel Energy Storage System (SFESS) and PD controller for AMB. And we experimentally evaluated SFESS including hybrid type AMB. The radial AMB was designed to provide force slew rate that was sufficient for the unbalance disturbances at the maximum operating speed. The thrust AMB is a hybrid type where a permanent magnet carries the weight of the flywheel and an electromagnetic actuator generates the dynamic control force. We evaluated the design performance of the manufactured AMB through comparison of FEM analysis and the results of experimental force measurement. In order to obtain gains of PD controller and design a notch filter, the system identification was performed through measuring frequency response including dynamics for the AMBs, a power amp and a sensor using a sine swept test method after levitating the flywheel. Through measuring the current input of the AMBs and the orbit of a flywheel according to rotational speed, we verified excellent control performance of the AMBs with small amount current for the large scale SFESS.

Keywords

References

  1. D. J. You, S. M. Jang, J. P. Lee and T. H. Sung, "Dynamic performance Estimation of high-power SFESS using the operating torque of a PM synchronous Motor/generator", IEEE Trans. Magnetics, Vol. 44, No. 11, pp. 4155-4158, 2008 https://doi.org/10.1109/TMAG.2008.2002607
  2. J. P. Lee, B. J. Park, Y. H. Han, S. Y. Jung and T. H. Sung, "Energy loss by drag force of superconductor flywheel energy storage system with permanent magnet rotor", IEEE Trans. Magnetics, Vol. 44, No. 11, pp. 4397-4400, 2008 https://doi.org/10.1109/TMAG.2008.2002633
  3. E. H. Maslen and D. C. Meeker, "Fault Tolerance of Magnetic Bearings by Generalized Bias Current Linearization", IEEE Trans. Magnetics, vol. 31, pp. 2304-2314, May 1995. https://doi.org/10.1109/20.376229
  4. E. H. Maslen, P. Hermann, M. Scott, and R. R. Humphris, "Practical limits to the performance of magnetic bearing: peak force, slew rate, and displacement sensitivity", NASA Conference on Magnetic Suspension Technology, NASA Langley Research Center, Hampton, VA, 1988.
  5. C. Chen et al, "A Magnetic Suspension Theory and Its Application to the Heart Quest Ventricular Assist Device", Artif. Organs, vol. 26, pp. 947-951, 2002. https://doi.org/10.1046/j.1525-1594.2002.07125.x
  6. B. C. Park, S. Y. Jung, S. C. Han, J. P. Lee, Y. H. Han, and B. J. Park, "Simulation and Experimental Analysis of Magnetic Levitation Relative Stability for the Flywheel Energy Storage", Trans. KIEE. Vol. 59. No. 9, pp. 1605-1610, Sep 2010.
  7. S. Y. Yoo, C. H. Park, S. K. Choi, J. P. Lee and M. K. Nho, "Validation of Flexible Rotor Model for a Large Capacity Flywheel Energy Storage System", Trans. KSME. Vol. 32. No. 12, pp. 1096-1101, 2008.