Abstract
The active magnetic bearing (AMB) is an ideal solution of the rotor support in the space reactor. The AMB are complete exemption of lubrication and well-adapted to the high temperature and intense radiation of the space reactor. Auxiliary bearings are utilized for temporary support and displacement limitation. When power outage happens, the rotor loses its support and drops down to the auxiliary bearing. The collision state at each moment is random and the interaction between the rotor and the auxiliary bearings is difficult to evaluate. Constrained by the structure, it’s hard to install force sensors. A preliminary method is proposed to evaluate the interaction between the rotor and the auxiliary bearings by analyzing the displacement signals of each DOF of the rotor based on specific contact conditions. The method can make up for the shortage that force sensors of the auxiliary bearing cannot be installed in the test rig and evaluate indirectly the force state of the rotor and the auxiliary bearings. It is beneficial to verify the reliability of the auxiliary bearings and can provide a certain theoretical basis for the application of the AMB-rotor system in the space reactor.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Xu, Y., Zhao, L., Yu, S., et al.: Study of safety and reliability design for active magnetic bearing-a survey. The first Chinese Academic Conference on Electromagnetic Bearings, Bei**g (2005)
Schweitzer, G., Bleuler, H., Traxler, A.: Active magnetic bearings: basics, properties and application of active Magnetic Bearings. Switzerland: ETH (2010)
Yang, G., Yu, S.: Preliminary study on rotor dynamics of magnetic bearing for 10 MW high temperature gas-cooled reactor. Nuclear Power Engineering 24(6), 514–516 (2003)
Keogh, P.S., Yong, W.Y.: Thermal assessment of dynamic rotor/auxiliary bearing contact events. J. Tribol. 129(1), 143–152 (2007)
Nelson, F.C.: Rotor dynamics without equations. Int. J. COMADEM 10(3), 2–10 (2007)
Fumagalli, M., Schweitaer, G.: Measurements on a rotor contacting its housing, in 6th International Conference on Vibration in Rotating Machinery, IMechE Conference Transactions, Oxford, pp. 779–788 (1996)
Kang, X., Yang, G., Yu, S.: Dynamic behavior of the AMB’s vertical arranged rotor during its drop process. In: 22th International Conference on Nuclear Engineering, Prague, Czech (2014)
Zhu, C.: Transient response of rotor drop on a rolling element backup bearing in a flexible rotor supported on active magnetic bearings. Acta Aeronautica et Astronautica Sinica 26(3), 349–355 (2005)
Masala, A., Vannini, G., Ransom, D., et al.: Numerical simulation and full scale landing test of a 12.5Mw vertical motorcompressor levitated by active magnetic bearings. In: Proceedings of ASME Turbo Expo, Vancouver, Canada (2011)
Su, Y., Gu, Y., Keogh, P.S., et al.: Nonlinear dynamic simulation and parametric analysis of a rotor-AMB-TDB system experiencing strong base shock excitations. Mech. Mach. Theory 155, 104071 (2021)
Vannini, G., Camatti, M., Masala, A., et al.: Full load testing of a 12.5Â Mw vertical high speed subsea motor compressor. In: Proceedings of the Fortieth Turbomachinery Symposium, Houston, Texas (2011)
Lee, J.G., Palazzolo, A.: Catcher bearing life prediction using a rainflow counting approach. Journal of Tribology 134(3), 31101(15) (2012)
Sun, Z., Yan, X., Zhao, J., et al.: Dynamic behavior analysis of touchdown process in active magnetic bearing system based on a machine learning method. Science and Technology of Nuclear Installations (2017)
Liu, X., Zhou, Y., Yan, X., et al.: Experimental study on the novel rolling-sliding integrated auxiliary bearing in active magnetic bearing during rotor drop. Ann. Nucl. Energy 136, 107044 (2020)
Liu, T., Lyu, M., Wang, Z., et al.: An identification method of orbit responses rooting in vibration analysis of rotor during touchdowns of active magnetic bearings. J. Sound Vib. 414, 174–191 (2018)
Lyu, M., Liu, T., Wang, Z., et al.: A control method of the rotor re-levitation for different orbit responses during touchdowns in active magnetic bearings. Mech. Syst. Signal Process. 105, 241–260 (2018)
Zhao, Y., Yang, G., Liu, X., et al.: Research on dynamics and experiments about auxiliary bearings for the helium circulator of the 10 MW high temperature gas-cooled reactor. Ann. Nucl. Energy 95, 176–187 (2016)
Acknowledgements
This paper is supported by Heilongjiang Province Postdoctoral Research Foundation (LBH-Q21094) and the Characteristic discipline construction project of the Harbin Institute of Technology. Thanks are due to Professor Zhao, Lei and Associate Professor Yang, Guojun for assistance with the experiments and valuable discussion.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Zhao, Y., Ding, H., Zhang, G., Cheng, K., Zhang, H. (2023). Preliminary Evaluation of Impact Forces in Rotor Drop of the AMB-rotor System in Space Reactor. In: Liu, C. (eds) Proceedings of the 23rd Pacific Basin Nuclear Conference, Volume 2. Springer Proceedings in Physics, vol 284. Springer, Singapore. https://doi.org/10.1007/978-981-19-8780-9_39
Download citation
DOI: https://doi.org/10.1007/978-981-19-8780-9_39
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-19-8779-3
Online ISBN: 978-981-19-8780-9
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)