ANFIS based soft-starting and speed control of AC voltage controller fed induction motor

An intelligent AC voltage controller is proposed for the control of induction motor. It controls the motor speed by adjusting the firing angles of the thyristors. Adaptive network fuzzy inference system (ANFIS) based controller was designed for open-loop sensor less control. The results obtained were satisfactory and promising. In addition to simplicity, stability, and high accuracy such controller gives soft starting. It is suitable to control induction motor as a soft starter and speed adjustment in compressors, blowers, fans, pumps, and many other applications