The Effect of Modulating Ring Design on Magnetic Gear Torque

An investigation into a magnetic gear modulating ring design geometry and the performance of a magnetic gear is presented. Modulating ring construction is one of the more difficult aspects of magnetic gear design, and a compromise between magnetic performance, losses in conductive supporting parts, and manufacturability is often required. Three possible designs for modulating rings are presented, and their magnetic performance compared with an ideal but unrealistic case of independent modulating parts.