A Study of the Influence of Quasi-Halbach Arrays on a Torus Machine

Abstract

This paper aims to analyze the influence of quasi-Halbach arrays on the performance of an axial-flux machine with slotless toroidal core (Torus machine). The analysis was performed using a 3-D finite-element simulation of two machines, with one machine equipped with a quasi-Halbach array and a second with a conventional design with axially magnetized permanent magnets. These simulations were carried out in order to compare their performance. It was observed that the employment of quasi-Halbach arrays increases the torque density and the effective no-load terminal voltage.