PROBLEM OF SINGLE-PHASE INDUCTION MOTOR WITH ASYMMETRICALLY SPACED WINDINGS

Abstract

The dissertation deals with the performance-prediction of the single-phase Induction motor with two asymmetrical stator* windings not in space quadrature, -taking into account the effect of space-harmonies. Crossfield theory in a generaz.sod form has been applied as dealt in reference with a modification* A transformer analogue analyser type equiva.ent circuit is also developed. The m ,chine is shown to be equivalent to a machine with two at .i t or-winding s in space quadrature for full, i load ru~rning (i.e. near synchronous spe ds) and a simpler and handy equivalent circuit is determined, neglecting the space*» harmonics iitthout 'pprec.able error. The performance of a single phase induction motor bei having non#quadrature stator-windings has boon analysed$ with stress on start4.ng torque torque, starting- c p:,citor requirr3nt, suppression or reduc4ion of asynchronous dips in the torque-speed characteristic, running and plugging op3rations