A suggested rotor flux locus concept of single-phase induction-motor operation

THE cross field theory and the revolving field theory are the 2 commonly accepted bases for analytieal treatment of the single phase squirrel cage induction motor. For the purpose of quantitative analysis as well as to explain why and how the motor runs, the first mentioned theory resolves fluxes, voltages, and currents into components in 2 axes fixed with reference to the stator; whereas the second theory resolves the flux into 2 rotating components — one rotating in a positive direction at synchronous speed, and the other rotating in a negative direction at synchronous speed.