Analytical Open-Circuit Magnetic Field Distribution of Slotless Brushless Permanent-Magnet Machines With Rotor Eccentricity

作者：Rahideh A; Korakianitis T^*

来源：IEEE Transactions on Magnetics, 2011, 47(12): 4791-4808.

DOI：10.1109/TMAG.2011.2159987

• External rotor
• Halbach
• internal rotor
• magnetization
• modeling
• permanent magnet
• rotor eccentricity

Analytical expressions for the no-load magnetic field distribution of slotless brushless permanent-magnet (PM) machines with static, dynamic, and mixed rotor eccentricities are presented. The proposed analytical expressions can be used for slotless brushless PM machines with any radius-independent magnetization pattern. The analytical expressions and the results for six different magnetization patterns are presented. Based on the analytical magnetic field distribution, the line and phase back-electromotive force waveforms, local traction components and unbalanced magnetic forces are obtained. The analytical results are compared with those from finite-element analyses to validate the derived expressions.

• 出版日期2011-12