Analysis of a novel axial flux permanent magnet eddy-current coupling with a movable stator ring

A novel axial flux permanent magnet eddy-current coupling (PMECC) employing a new magnetic field adjustment (MFA) method is proposed in this paper. The structural feature and operation principle of the novel PMECC are illustrated. The magnetic equivalent circuit (MEC) model is built in this paper to analyze its electromagnetic characteristics efficiently. For improving the torque capability, the structure parameters effects on the air-gap magnetic field and output torque are investigated by FEM. The results derived from the finite element method (FEM) verifies the speed-adjustable capability of the proposed coupling equipped with the new MFA method.