Analytical modeling and analysis of magnetic field and torque for novel axial flux eddy current couplers with PM excitation

oleh: Zhao Li, Dazhi Wang, Di Zheng, Linxin Yu

Format: Article
Diterbitkan: AIP Publishing LLC 2017-10-01

Deskripsi

Rotational permanent magnet eddy current couplers are promising devices for torque and speed transmission without any mechanical contact. In this study, flux-concentration disk-type permanent magnet eddy current couplers with double conductor rotor are investigated. Given the drawback of the accurate three-dimensional finite element method, this paper proposes a mixed two-dimensional analytical modeling approach. Based on this approach, the closed-form expressions of magnetic field, eddy current, electromagnetic force and torque for such devices are obtained. Finally, a three-dimensional finite element method is employed to validate the analytical results. Besides, a prototype is manufactured and tested for the torque-speed characteristic.