Static starting switch for a single-phase induction motor

Two types of switches are traditionally used to disconnect the auxiliary winding, after starting, in single-phase induction motors. There are many drawbacks inherent in the operation of these switches. In order to overcome such drawbacks, a static switch is developed. It incorporates a triac whose firing is controlled by either the rotor speed or the main winding current.IEEE, Communications Soc, New York, NY, USA, IEEE, Power Electronics Soc, New York, NY, USA, IEEE, Education Soc, US