NEW INVERTER-DRIVEN DESIGN AND CONTROL METHOD FOR 2-PHASE INDUCTION-MOTOR DRIVES

A simple inverter circuit is proposed for driving symmetrical and unsy mmetrical two-phase induction motors. The inverter provides two-phase independently controlled variable-frequency variable voltages to the p rimary and auxiliary windings of an induction motor. The dynamic model of the two-phase induction motor driven by the inverter is establishe d. An experimental prototype, which consists of a single-chip micropro cessor-based controller, the inverter, and the motor and load, is cons tructed. Both computer simulation and experimental results show the ef fectiveness of the proposed inverter-driven motor in achieving higher performance, such as less torque and speed pulsation and reduced vibra tion and noise, than the conventional motors.