a design approach for coaxial magnetic gear and determination of torque capability

This paper presents a time-saving methodology for design and sizing the magnetic gear sets. some new design parameters similar to mechanical gears are defined to calculate the torque capacity based on these. finite-element analysis is extensively used to calculate the variation of gear set torque capacity due to changes in different geometric parameters of a set. different design curves are obtained by which the design and sizing of the gears can routinely be accomplished. optimal performance of magnetic gear wasn’t the main target of this research and just this method helps gear designers to decide on parameters such as scale of gears, magnet thickness, stack length and pole pair numbers and come up with a close to optimum geometry design.