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Jonathan Bird, University of North Carolina at Charlotte

Abstract

A magnetic gearbox offers many advantages over its mechanical counterpart such as contact free torque production, no gear lubrication and inherent overload protection. Current magnetic gear designs use rare-earth magnet material. Unfortunately, for the foreseeable future, devices using large quantities of rare-earth material are not going to be cost competitive with existing gear technology. This paper investigates the performance of low cost flux focusing magnetic gears using ferrite magnets. Parameter optimizing as well as the influence of eddy current loss and demagnetization issues will be studied using JMAG.