Comparative Analysis of a Coaxial Magnetic Gear With a Flux Concentration Rotor and Consequent Pole Rotor Typology

摘要

This paper presents the performance comparison between a flux concentration (FC) and triple-permanent magnet (PM) consequent pole (CP) magnetic gear (MG) rotor typology with the same 7.5:1 gear ratio. The triple PM CP MG is unique in that it can create torque change through two field heterodyning pole combinations. The performance with respect to volumetric and mass torque density is considered. It is shown that the FC typology can operate with a higher mass and volumetric torque density, even when using a low FC ratio rotor.