Integrated Radial-axial Magnetic Bearing with Variable Permanent-Magnet Bias Flux In Situ

Xu, Shilei; Li, Jiajing; Wang, Zhipeng; Sun, Jinji; Ren, Hongliang

doi:10.1007/s42835-023-01742-2

Cited by 1 publication

(1 citation statement)

References 19 publications

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“…Nowadays, magnetic levitation (maglev) technology has been widely commercialized in high-speed machinery due to its advantages of no friction, micro-vibration, long life, high precision, and so on. As a core component for rotating machinery, magnetic bearings are generally applied to support high-speed rotor contactless, such as maglev flywheels, maglev control moment gyroscopes, and maglev motors [1][2][3][4]. Regarding linear motion, the magnet and linear motors are combined and applied; the magnet realizes levitation and the linear motor is used for propulsion, such as the maglev train and the maglev elevator.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of a Novel Levitation Magnet with Damping Coils for High-Speed Maglev Train

Fu,

Deng,

Han

et al. 2024

Sustainability

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In this work, a novel levitation magnet with damping coil is proposed to address the existing issues and improve reliability. The fault mechanism of the existing magnet is analyzed and validated using a coupling model combined with inductive voltage experiments. The magnetic yoke with damping coils is designed and the equivalent magnetic circuit (EMC) model of the magnet is established. The nonlinearity of magnetic materials and the magnetic flux fluctuation due to the tooth-slot effect are considered in the EMC model. Simultaneously, the transient finite element (FEM) model is built. The magnetic flux of yoke, the inductive current of the damping coil, and the magnetic force are analyzed. A good agreement is found between EMC and FEM. Additionally, the static magnetic force is tested on the magnet test platform to validate EMC and FEM models. Results reveal that compared with the existing magnet, the magnetic flux fluctuation with damping coils is significantly reduced, and the inductive voltages with the damping coil are significantly decreased. The novel magnet with damping coils featuring excellent magnetic characteristics is more advantageous for the system’s security and durability.

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Section: Introductionmentioning

confidence: 99%