COMPARATIVE ANALYSIS OF DIFFERENT WAYS OF STARTING OF CAGE INDUCTION MOTOR

Considered direct starting of cage induction motor, and also starting by means of thyristor voltage converter and transistor frequency converter. The specifics of the engine drives with semiconductor converters, consisting in nonsine supply voltage and changes the parameters of equivalent circuits associated with a change in the parameters of the supply voltage, and saturation of magnetic circuit and the displacement current in the rotor winding are taking into account. According to the results of calculations of energy consumed shows the advantage of frequency start. Correctness of the offered mathematical models is experimentally confirmed.