Abstract
We studied a new type of three-phase induction motor excited by a single-phase power supply, and have succeeded in generating a three-phase rotating magnetic field in the stator of the motor. However, sufficient values for the output power and efficiency have not yet been obtained. This paper discusses the relationships between the stability of parametric oscillation and the magnetic flux density inside the outer magnetic path in the motor with a view to improving the output power of the motor. As a result, the condition of magnetic flux density distribution necessary for stable parametric oscillation is obtained.
