TY - JOUR
T1 - Performance comparison of analytical models for rotor eccentricity
T2 - A case study of active magnetic bearing
AU - Cao, Zhi
AU - Huang, Yunkai
AU - Guo, Baocheng
AU - Dong, Jianning
AU - Peng, Fei
PY - 2020
Y1 - 2020
N2 - This paper applies two different analytical methods, i.e., the perturbation method and superposition method, to calculate the magnetic flux density distribution and the magnetic force of the active magnetic bearing (AMB) with the rotor eccentricity. These two methods are thoroughly analyzed, compared and validated by the finite element model (FEM). The perturbation method is theoretically complex while the superposition method is intuitive. The valid range of the superposition method is larger than the perturbation method. However, the superposition method requires longer computation time. The main contribution of this paper is assessing the effectiveness of two analytical methods for predicting the AMB performance with the rotor eccentricity and giving a comprehensive guideline for engineers to choose the proper analytical method to design AMB.
AB - This paper applies two different analytical methods, i.e., the perturbation method and superposition method, to calculate the magnetic flux density distribution and the magnetic force of the active magnetic bearing (AMB) with the rotor eccentricity. These two methods are thoroughly analyzed, compared and validated by the finite element model (FEM). The perturbation method is theoretically complex while the superposition method is intuitive. The valid range of the superposition method is larger than the perturbation method. However, the superposition method requires longer computation time. The main contribution of this paper is assessing the effectiveness of two analytical methods for predicting the AMB performance with the rotor eccentricity and giving a comprehensive guideline for engineers to choose the proper analytical method to design AMB.
KW - Active magnetic bearing (AMB)
KW - Analytical models
KW - Perturbation method
KW - Sub-domain method
KW - Superposition method
UR - http://www.scopus.com/inward/record.url?scp=85090720977&partnerID=8YFLogxK
U2 - 10.4283/JMAG.2020.25.2.285
DO - 10.4283/JMAG.2020.25.2.285
M3 - Article
AN - SCOPUS:85090720977
SN - 1226-1750
VL - 25
SP - 285
EP - 292
JO - Journal of Magnetics
JF - Journal of Magnetics
IS - 2
ER -