Finite Element Analysis of a novel axial flux PM synchronous machine with excitation control

The paper presents the benchmarking work of a novel PM synchronous machine using a commercially available 3D FEA package for modelling. The novel synchronous machine uses permanent magnets in combination with a field winding incorporated within the main machine, allowing the field to be adjusted. Firstly, the machine hardware is described with the help of a few FEA plots and the machine operation explained for better understanding of the 3D model. The test results acquired by subjecting a prototype machine to a programme of intense and varied tests, are compared to quantities obtained through running the 3D model. Furthermore, some suggestions are presented in order to improve the software model and the paper ends with conclusions.