关键词: 联轴器, 永磁, 涡流, 大功率

Abstract: The working principles and advantages of permanent magnet eddy-current coupling were introduced for high-power couplings. The magnetic circuit was analyzed,torque of the coupling was calculated by reluctance method, the relationship among structural parameters（the thickness of copper, the thickness of magnetizer, the length of air gap, the thickness of permanent magnet, the number of permanent magnet , relative speed）with torque was obtained. The distribution of the magnetic field and eddy current of the coupling was obtained by Ansoft Maxwell, and the influences of the structural parameters on the torques and axial forces were analyzed.

Key words: coupling, permanent magnet, eddy-current, high-power