Affiliations: [a] School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan, Hubei, China | [b] School of Mechanical and Electronic Engineering, Henan Institute of Technology, Xinxiang, Henan, China | [c] Hubei Provincial Engineering Technology Research Center for Magnetic Suspension, China
Correspondence:
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Corresponding author: Wang Xiaoguang, School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China. Tel.: +86 13986172335; E-mail: 266742@whut.edu.cn
Abstract: The continuous development of magnetic bearing in areas of aerospace, military, turbine power generation and flywheel energy storage has raised higher requirement for the reliability of magnetic bearing system. However, the integrated armco iron structure adopted by traditional concentric axial redundant magnetic bearing stator causes more eddy current loss and temperature rise when working and is not reliable. For the purpose of reducing eddy current loss and improving the reliability of magnetic bearing, this paper proposes a laminated core type axial redundant magnetic bearing. The comparison of dual-ring axial redundant magnetic bearing and laminated core type axial redundant magnetic bearing regarding their carrying capacity and temperature rise performance showed that the latter was better in an obvious way.
Keywords: Axial magnetic bearing, laminated core, redundancy, temperature field, eddy current loss
