Modelling of a magnetic gear considering rotor eccentricity

This paper presents a new topology for high torque high performance permanent magnetic gear. The proposed topology is extensively studied thought series of simulations with ANSYS Maxwell, an electromagnetic solver based in finite element method. Parametric analysis provides a first geometry to be optimized, searching which variables are the most important to achieve high torque values and robustness for rotor eccentricities. After an optimum design is achieved, the confrontation of torque and the response of each design to a rotor displacement are studied. The final optimized permanent gear can deliver 147kNm/m³, with less interference to static eccentricities.