Design and Parametric Analysis of Dual Mechanical Port Field Excited Flux Switching Generator for Wind Turbine Applications

In this paper, a novel dual mechanical port field excited flux switching generator (DMPFEFSG), which incorporates inner and outer rotors, is proposed for wind turbine applications. The proposed DMPWFFSG is composed of a dual armature single tooth non-overlapped winding and shared toroidal field excitation coils wound on the stator yoke. As a result, a shortened flux path that improves electromagnetic performance is conceived. To further improve overall performance, parametric analysis is performed on geometric parameters based on finite element method (FEM). In comparison with initial design, the analysis reveals that that the inner machine armature flux can be improved by 7.39%, the back-EMF can be increased by 11.74% while cogging torque (
$T_{cog}$
) can be suppressed by 31.51%, whereas for the outer machine armature, the flux can be increased by 61.95%, the back-EMF can be increased 41.88% while
$T_{cog}$
can be suppressed by 36.63%.