Stator Slotting Effect on the Magnetic Field Distribution of Salient Pole Synchronous Permanent-Magnet Machines

Influence of Stator Slotting on the Performance of Permanent-Magnet Machines With Concentrated Windings

“…13 illustrates the air gap flux density including slotting effect, but excluding fringing. While curve (2) (11) where, l m is the length of magnet and b s is the slot opening.…”

“…Equations (7) and (8) can be found in [7], [28], while (9) was given by Carter in [4]. Equation (10) is given by [29] for PM machines, while (11) can be found in [7], [8]. Almost all the equations above have been derived using conformal transformations.…”

“…In [10], the influence of the slot opening on the harmonics of the magnetomotive force of concentrated windings was investigated. In [11], [12], the authors used finite-elementmethod (FEM) computations to study the slotting effect on the air gap flux density.…”

“…In [11], Dajaku and Gerling proposed an analytical model for the case of double-side slotting. All methods based on analytical solutions including conformal transformations have a limitation, namely that they cannot consider the influence of magnetic saturation.…”

Comparison of higher harmonic contents in salient pole synchronous generator with different rotor construction

“…The distribution of the magnetic flux density in the air gap of a salient pole synchronous generator has an influence on the occurrence of higher harmonics in voltage induced in the stator windings [1][2][3][4][5][6][7][8]. The shape of the stator and rotor magnetic surfaces has an influence on the distribution of the magnetic flux density along the air gap circumference, and the magnetic flux density:…”