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An improved method of calculation is described which the eddy current reaction and the variable permeability of the solid pole are taken into account. At no-load, the saturation of the stator teeth is fully considered and shows that tooth-ripple harmonics are increased by it. On load, the stator MMF harmonics of integral-slot windings are determined and added with due regard of their phase shift.
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K. Oberretl (1972) studied this question.
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