Open AccessDesign and analysis of permanent magnet biased radial magnetic bearing with external rotor for vacuum tube
Author(s) -
Ying Wang,
Lei Mei
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1650/2/022081
Subject(s) - magnet , magnetic bearing , electromagnet , magnetic flux , magnetic field , rotor (electric) , magnetic circuit , electropermanent magnet , mechanics , magnetic energy , finite element method , materials science , mechanical engineering , physics , permanent magnet synchronous generator , engineering , magnetization , thermodynamics , quantum mechanics
A permanent magnet biased radial magnetic bearing with external rotor for vacuum tube was introduced, and the configuration and operating principle were analyzed. The parameter design method based on the total magnetic flux was established to deduce the calculation formulas of the parameters of the permanent magnet radial magnetic bearing. The magnetic flux leakage coefficient and the magnetic resistance coefficient were considered, and the calculations were constrained to the degree of magnetic flux density unsaturation of the internal magnetic field of the soft magnetic material. Finite element software was used to execute simulation analysis and modeling of the permanent magnet biased radial magnetic bearing. The results show that the design method is reasonable and efficient, and the design magnetic bearing is compact and easy to control, which is more suitable for the liner motion with low power consumption.