Reluctance network modeling tubular linear alternator considering iron nonlinearities

This paper presents a nonlinear reluctance network modeling a tubular surface mounted permanents magnets linear alternator. The ferromagnetic materials saturation is considered. The topology and the reluctance values of the network are automatically computed. The linkage between rotor and stator network is modified for each rotor position. The model allows a transient study and presents a good accordance with finites elements method considering the magnetic fluxes view by the stator windings. The proposed model is developed to be used in a systemic modeling of a generator set to optimize the alternator for a low frequency application.