Modeling, Design, and Sensitivity Analysis of a Continuous Magnetic Gear Using Finite-Element Method

Abstract

Magnetic gears are considered to be an interesting alternative of mechanical torque transmission systems. They offer significant benefits compared with mechanical gears, such as reduced maintenance, improved reliability, inherent overload protection, and physical isolation between the input and output shafts. The continuous ratio for magnetic gears is an important factor that is very useful for many applications, such as wind turbines, electric vehicles, and other related applications in which continuous ratio of the gear box is essential. In this article, modeling and sensitivity analysis of a continuous magnetic gear is carried out. To this end, a continuous magnetic gear is modeled by a magnetic equivalent circuit, and then the output torque, speed, and magnetic field distribution inside the gear box are evaluated thorough the finite-element method.