Affiliations: [a] School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu, China | [b] School of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, Shandong, China | [c] School of Electrical and Information Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
Correspondence:
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Corresponding author: Xiaodong Sun, School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China. E-mail:xdsun@ujs.edu.cn
Abstract: This paper presents a suspension force modeling method of
BPMSMs based on Maxwell stress tensor method. By deducing the magnetic flux
density of the airgap in BPMSMs using magnetic circuit analytic approach,
the suspension force model with rotor eccentricity is established. And then
the suspension force of a surface-mounted BPMSM is computed by the finite
element method. Furthermore, in order to confirm the performance of the
BPMSM and the magnetic suspension in real time, a prototype machine and its
control scheme is set up and then corresponding experimental study is
carried on. Rotor stabilization with magnetic levitation by using Maxwell
tensor modeling method is verified by the simulation and experimental
results.
Keywords: Bearingless permanent magnet synchronous motor, magnetic levitation, suspension force, maxwell stress tensor method, finite element
