Performance evaluation of newly developed slotted modulator of Co-Axial magnetic gears

Abstract

A modulator and a connecting bridge make up the magnetic modulator ring in co-axial magnetic gears (CMG). This critical study examined the combined influence of modulator bridge configuration and varying magnetization on the functionality of a recently created slotted modulator of the CMG model. The magnetic flux density, and static torque of the CMG with various structural configurations of the slotted modulating rings are evaluated using the two-dimensional nonlinear finite element method. Based on the bird's-eye view of the review, the inner modulator bridge with Halbach array magnetization is the best combination to perform well among the other two combinations. When compared to the inner position, the slotted modulator bridge positions in the center and outer locations can reduce the magnetic flux density distribution by 4.5% and 9.9%, respectively. Furthermore, the greatest static torque obtained at the inner bridge position and Halbach magnetization was 169 Nm. As a result, this critical analysis recommends a thinner inner modulator bridge with a Halbach array for the best CMG performance.