Analysis and comparison of switched reluctance motors with different physical sizes using a 2D finite element method

Abstract

This paper investigates the influence of physical size of switched reluctance motor on its output performance. Three four-phase switched reluctance motors with different dimensions and power ratings are used for comparison. The magnetic characteristics of each motor are described using 2D finite element method. Field solutions from finite element calculation and analysis combined with the output equation are processed to give the energy conversion loop, ψ to approximately i trajectory, for each motor. The comparison of the output performance and ψ to approximately i loop for each motor provides the basis for the discussion on the relationship of output performance of switched reluctance motor to its physical size.