Mathematical Model of PM Disc Generator with Iron Cores of Stator Coils

Modeling of Axial Flux Permanent Magnet Generators

“…The total number of tetrahedral elements (for the basic model mesh) was 857,643. The main features of considered AFPM machine with non-overlapping windings [29][30][31][32]: number of coils per phase p s , total number of stator coils 3 p s , number of magnets per 1 rotor disc 2p = 4p s , p / p s = 2, maximum angle of coil pitch ε max = 2π 3p s = 4π…”

“…Energies 2020, 13 Further analyses were carried out for four generator variants: two stator designs [30][31][32] and two ways of magnets arrangement. In case of amateur solutions, these design options are quite simple and often performed.…”

“…where: θ-it is the angular coordinate associated with the air-gap, ϕ-it is the angle of the rotor position with respect to the reference frame. The distribution of magnetic flux-density in the gap induced by permanent magnets can be approximated using the Fourier series [13,15,[29][30][31][32]:…”

“…where the Fourier spectrum contains harmonics of ς th order, which belong to the set The distribution of magnetic flux-density in the gap induced by permanent magnets can be approximated using the Fourier series [13,15,[29][30][31][32]:…”

“…2.1.2. Distribution of Flux-Density in a Machine with Real Shapes of a Magnetic Circuit An illustration of the methodology of deriving an analytical model of the magnetic flux density distribution in the air gap was made for the model with cores [32], presented in the coordinate system according to Figure 6. Basing on this model, any other shapes of the magnetic circuit can also be inserted.…”