Electro-Magnetic Characteristics of a Single-phase Induction Motor without a Rotor

摘要

The present paper examines a permanent-split capacitor single-phase induction motor that does not contain a rotor. The stator of this motor is capable of generating an elliptical magnetic field inside the stator core of the motor housing by exciting two stator windings. Varying the capacitance of the capacitor, which is connected in series with the auxiliary winding, can vary the shape of the magnetic field. Equations for the magnetic field were derived by the method that based on an analysis of the magnetic circuit of the induction motor. These equations were used to calculate the Lissajous figure of the magnetic field inside the stator core of the motor housing. The calculated results were in good agreement with the Lissajous figures obtained experimentally using an oscilloscope.