Dynamic Force Calculation and Experimental Verification of Axial Bearings

Authors

  • Mingqi Wang Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China
  • Jingjing Zhao Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China
  • Xingnan Liu Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China
  • Ni Mo Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China
  • Zhengang Shi Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China

DOI:

https://doi.org/10.13052/2022.ACES.J.370412

Keywords:

Axial bearing dynamic performance, gap,, resonance

Abstract

The axial bearing does not contain a laminated piece; so its dynamic performance is poor and often does not meet the load requirements. To accurately assess axial bearing performances during the design stage, it is necessary to accurately calculate the dynamic characteristics of the bearing, including amplitude, phase, and other parameters. Traditional studies have generally used the magnetic circuit method (MCM) or the finite element method (FEM) to analyze the dynamic performance of bearings, and few experimental measurements are carried out. Some experiments use a Guess meter to measure the magnetic field at local locations without directly measuring the electromagnetic force. In this paper, the dynamic force of axial bearing is measured by experiments, and the finite element calculation with Ansys Maxwell is carried out to study the influence of the gap, resonance, and other factors on the electromagnetic force. The comparison reveals a significant error in the calculation method using the initial gap because the gap between the stator and rotor changes with the dynamic force in the experiment. In this paper, the calculation method of “analyzing the dynamic performance of the bearing with the actual gap after the DC component is energized as the calculation gap” is proposed, which significantly reduces the calculation error and can ensure that the calculation error of amplitude and phase within 100 Hz is less than 5%. The method is of great significance for the engineering application of axial electromagneticbearings.

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Author Biographies

Mingqi Wang, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China

Mingqi Wang got her bachelor’s degree of Energy and Power Engineering in North China Electric Power University (Baoding) in 2019. She is now studying at Institute of Nuclear and New Energy Technology, Tinghua University, Beijing, China. Her research subject is magnetic bearing.

Jingjing Zhao, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China

Jingjing Zhao got her master’s degree of Precision Instrument and Machinery in Beihang University in 2005. She is now working in Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China. Her main research direction is the measurement and control of electromagnetic bearings.

Xingnan Liu, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China

Xingnan Liu got his PHD of Materials Science and Engineering in Tsinghua University in 2011. He is now working in Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China. His researching subject includes novel magnetic bearing, magnetic field analysis, rotor dynamics, auxiliary bearing and insulation of helium gas.

Ni Mo, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China

Mo Ni received the PHD degree in electrical engineering from Tsinghua University in 2009. He is currently working with the Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China. His research interest is magnetic bearing applications.

Zhengang Shi, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China

Zhengang Shi got his PHD of Nuclear Science and Technology in Tsinghua University in 2003. He is now working in Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China. Dr. Shi’s research subject is magnetic bearing.

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Published

2022-04-01

How to Cite

[1]
M. . Wang, J. . Zhao, X. . Liu, N. . Mo, and Z. . Shi, “Dynamic Force Calculation and Experimental Verification of Axial Bearings”, ACES Journal, vol. 37, no. 04, pp. 466–477, Apr. 2022.

Issue

2022: Vol 37 Iss 4

Section

Articles