Investigation of the flux leakage effects in transverse-flux magnetic gear

The purpose of this paper is to investigate the flux leakage effects in the transverse-flux magnetic gear (MG), in which two typical flux leakage phenomena are identified and analyzed, namely, end leakage and fringing leakage. By using the JMAG 12.1 software, the three-dimensional finite element analysis (3D-FEA) modeling surrounded by some blocks with setting as different material properties are built to comparatively analyze the flux leakage effects. Based on the established 3D-FEA models, the influence of main dimension parameters on the stall torque in the analyzed transverse-flux MG with taking the flux leakage effects into account compared with that without flux leakage effects are studied. And the torque-angle characteristics comparison is also conducted. The results show that there is a significant reduction for the torque capability due to the flux leakage effects in the analyzed transverse-flux MG.