Analytical Approach for Air-gap Modeling of Field-Excited Flux-Switching machine: No-load Operation

Benjamin Gaussens (1)

1 SATIE - Systèmes et Applications des Technologies de l'Information et de l'Energie

This paper presents a general and accurate approach to determine the no-load flux of field-excited flux-switching (FE-FS) machines. These structures are inherently difficult to model due to their doubly-slotted air-gap. This analytical approach is based on MMF-permeance theory. The analytical model developed is extensively compared to field distribution obtained with 2D Finite Element (2D FE) Simulations. The good agreement observed between analytical model and 2D FE results emphasizes the interest of this general approach regarding the computation time. Hence, this analytical approach is suitable for optimization process in presizing loop. Furthermore, based on the field model, classical electromagnetic performances can be derived, such as flux-linkage and back-electromotive force (back-EMF) and also, unbalanced magnetic force. Once again, FE results validate the analytical prediction, allowing investigations on several stator-rotor combinations, or optimization of the back-EMF.

Domaines: Electromagnétisme

Benjamin Gaussens. Analytical Approach for Air-gap Modeling of Field-Excited Flux-Switching machine: No-load Operation. IEEE Transactions on Magnetics, 2012, pp.X. ⟨hal-00880919⟩