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ABSTRACT
A method of analysis of shaded pole induction motors with ununiform airgap is described. For the analysis, a dq model of a generalised machine theory with any number of stator windings arranged in an arbitrary way on the stator and ununiform airgap is chosen. The analysis involves resolution into a harmonic series, together with complex matrix inversion. Results of computational study of the effect of changes of airgap profile on the performance characteristics are presented. It is shown that by increasing the airgap under the part of a pole which la opposite to the shading coils, an increased starting torque can be obtained.