New high-speed induction motor driven by a commercial source

This paper described the structure and characteristics of a new high-speed induction motor. The motor has the magnetic combination of an induction motor and a magnetic frequency tripler and is called a "hybrid motor". When the three-phase to two-phase type tripler we proposed is adopted, this rotating-field type hybrid motor can be constructed. The motor has remarkable starting torque and operates near synchronous speed (10800rpm) by only an application of a 60 Hz commercial source. It is noted that the motor has no semiconductor device and a brushless structure.