EXPERIMENTAL ASSESSMENT OF A SINGLE PHASE-WINDING INDUCTION MOTOR
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ABSTRACT The performance characteristics of a single phase-winding induction motor are obtained from an extensive experimental investigation of the effect of air-gap asymmetry arising from the use of a stepped profile of each of its stator salient poles. Performance characteristics are given for a wide range of the ratio of the long-airgap to the short-airgap spans, as well as the ratio of airgap radial lengths, with the rotor cage-winding resistance being included as a further variable. The results indicate that this most simple of all motors may be designed eventually to be commercially viable for some applications presently utilizing shaded-pole motors, with the benefit of an increased efficiency. The latter advantage should extend the use of the simple motor to outputs beyond the present limit of shaded-pole motors.
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