Identification of a solid-core active magnetic bearing in current and voltage drive modes

Zhou, Liang; Li, Lichuan

doi:10.1177/0954406215619950

Cited by 1 publication

(3 citation statements)

References 22 publications

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“…Equations ( 8) to (10) indicate that the open-loop HTMB is an unstable dynamic system. Position feed-back control of the bearing based on the model expressed in equation ( 8) can be designed to stabilize the rotor at the equilibrium point.…”

Section: Modelling Of the Bearingmentioning

confidence: 99%

“…2,3 Therefore, it is being extensively used in the high-speed rotating machineries, such as flywheel energy storage systems, 4–6 high-speed motors, 7 turbo machinery, 8,9 and precision machine spindles. 10,11…”

Section: Introductionmentioning

confidence: 99%

“…2,3 Therefore, it is being extensively used in the high-speed rotating machineries, such as flywheel energy storage systems, [4][5][6] high-speed motors, 7 turbo machinery, 8,9 and precision machine spindles. 10,11 In general, the TMBs are classified into three categories: active, passive, and hybrid TMBs. Hybrid thrust magnetic bearings (HTMBs) are widely used in industrial applications.…”

Section: Introductionmentioning

confidence: 99%

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A novel permanent magnet bias hybrid thrust magnetic bearing with extremely simple structure for high-speed rotating machinery

Wang

Liu

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper presents a novel permanent magnet (PM) bias hybrid thrust magnetic bearing (HTMB), which can be used to replace the traditional thrust magnetic bearings (TMBs) for high-speed rotating machinery. By adding two PM rings and by reducing the number of the control coils by half, this HTMB eliminates the bias current, reduces the number of amplifiers, and minimizes the magnetic bearing’s structure complexity and power consumption. The analytical modelling method of the HTMB is presented in this paper. Mathematical models for calculating the magnetic force capacity and the stiffnesses of this bearing are derived as simplified formulae, which can be used for the design, analysis, and control of this bearing. Electromechanical characteristics of the HTMB are analyzed, which is compared to the traditional TMB to demonstrate the advantages of the HTMB. The prototype of the HTMB is designed, analyzed, and fabricated, whereas, the 2-D FEM is used to verify the design and the analytical model. Finally, an experimental setup is constructed and tested. The analytical and experimental results indicate that the proposed novel topology of this HTMB is feasible and the presented analytical model is accurate.

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Section: Modelling Of the Bearingmentioning

confidence: 99%