Design aspects of a high torque density machine for an aerospace traction application

In this paper, design aspects for the development of high torque density machines are addressed. The main aim of this paper is to describe the electro-magnetic design and optimisation procedures developed in order to achieve an optimal design. The procedures are investigated by considering a high performance, aerospace, electrical machine used for aircraft traction. The selection of the optimal machine technology and topology is introduced. An analytical method for the selection of the optimal machine topology is proposed and validated by finite element results. The same tool is also applied to obtain a reliable demagnetisation prediction tool. Experimental results, measured from a built prototype are used to validate the design and modelling techniques described.