COMPREHENSIVE METHOD FOR TRANSIENT MODELING OF SINGLE PHASE INDUCTION MOTORS INCLUDING THE SPACE HARMONICS

In this paper a method which enables the simulation of single phase induction machines during transient as well as steady state is presented. The approach, based on the winding functions, makes no assumption as to the necessity for sinusoidal MMF and therefore include all space harmonics in the machine. The parameters of the model are directly calculated from the geometry and winding layout of the machine. The results are shown to be in good agreement with the solution obtained by a conventional d-q model for symmetric conditions. However, the developed method is then extended to include the effect of skewing of the rotor bars. Furthermore, the effect of stator and rotor slot numbers on the single phase induction motor start-up is explored.