Abstract
The conductance of air-gaps with double-sided slotting is generally considered with the assumption that the flux lines are radially directed only. Calculations allowing for the two-dimensional nature of air-gap fields, however, show a different situation with regard to the effect of slotting, especially at the higher harmonic orders. Calculated curves and tables are presented to illustrate the correlation between these two ways of approach for two slot combinations under excitation by a single coil, and also to establish the way in which the harmonics vary with changing rotor position.
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