Magnetic permeance of doubly-salient airgap geometry with finite slot depth and tapered teeth

Method of unaligned permeance determination for a doubly-salient rectilinea r airgap with infinite slot depth is used in order to cover a wider range o f gap geometry. The results are arranged in a more convenient form than is available in the literature. A set of new correction factor curves for fini te slot depth and taper are then obtained. These data can directly give the unaligned permeance of a rectilinear slotted geometry for given airgap pro portions (t/lambda and lambda/g, where lambda is the tooth pitch, t is the tooth width and g is the airgap length). A wide and useful range of airgap proportions are covered the aim having been to encompass all geometries lik ely to be of practical importance.