Analytical modeling of shaded pole motors with non-uniform air gap

The great utilization of non-uniform gap shaded pole motors has imposed the creation of a method to simulate its performance. This work has as proposal the introduction of an analytical-method to simulate the performance of non-uniform gap shaded pole motors. In the analytical section, it is proposed a method that employs an equivalent electrical circuit and the non-uniformity of the gap is taking in account by the decomposition of self and mutual inductances of and between each winding in harmonic components. The interactions between components of different harmonic orders are also considered. Lastly, it is described a proceeding to introduce the iron material permeability and its losses as function of the power source and the motor slip.