Analysis of a novel pressure-resistant permanent magnetic coupler

In this paper, a novel coupler based on permanent magnet, which is high-pressure and high-temperature durable, is developed and analyzed. The working principle of the proposed coupler is given. The generation of the magnetic force of the coupler is qualitatively explained by the reluctance theory. A theoretical model based on electromagnetic theory is built and solved in FEA code. The magnetic force on the armature and the magnetic torque on the permanent magnet are simulated with the permanent magnet being at different angular position. The influence of the physical dimension of the coupler is also studied. Finally, experiments are carried out to validate the theoretical work and exploit additional engineering features of the coupler.