Performance prediction of a single-phase capacitor-run axial flux induction motor under static eccentricity

摘要

Nowadays single-phase axial flux induction motors are widely used in home applications. This increasing usage is because of their distinct advantages over conventional induction motors. Some of these advantages are their planar and adjustable air gap, better power to weight and diameter to length ratio, compact construction, better efficiency, high utilisation of the active materials and thus a favourable power density. This paper deals with analysis and experiment of a single-phase capacitor-run axial flux induction motor (AFIM). The mathematical model of studied motor in transient and steady-state is investigated based on d-q axis theory. In particular, the proposed model takes into account the effect of core saturation, supply voltage and eccentricity. An experimental test setup is built to calculate core B-H curve. Also, a new definition for static eccentricity in direct drive systems is presented and its definition in shaft-coupled axial flux machines is improved. Finally, the studied AFIM is fabricated and tested. The simulation results are in good agreement with experimental data obtained from the prototype motor.