A Comparative Study of Brushless Non-salient Pole Monopolar Generators

This article presents the main results of the study of a brushless monopolar generator at various proportions of the main dimensions, as well as the experimental data necessary for the calculations. The design of the non-salient pole monopolar generator was used as a model; however, the main results can be applied to all three variants of the generator – with salient poles, nonsalient poles and the generator with longitudinal excitation. In the course of the study, a 3D model of the generator was used using finite elements; for better quality of the results and their clarity, the results are presented in 3D graphs for 3 parameters. The results generally confirmed the methodology of calculations, and also made it possible to compare different ratios of the length and diameter of the generators. The choice based on the length of the generator can be successfully made according to the formula, depending on the requested proportion of its dimensions. The dependence of losses in steel on the dimensions of a monopolar generator was revealed, which has implications for the generator efficiency studies.