Modeling and analysis of permanent magnetic driver with notched conductive plate

Path optimization for the eddy-current on the surface of conductor is of great importance because the transmission efficiency of the permanent magnetic driver depends on the excitation level generated by the induced current. In this paper we focus on a kind of permanent magnetic driver with notched conductive plate with which the current path is optimized, the current is made to flow radically and the stray current is eliminated. The distribution rules of 3D eddy-current field is analyzed, the effect of optimization is shown and the parameters are computed by building the 3D dynamic simulation model for the notched structure. The high efficiency of the notched structure is validated by comparing its torque characteristic curve with that of the non-notched one.