Cage Induction Machine Under Voltage Subharmonics Combined with Voltage Deviation

This work deals with a cage induction machine in the conditions of voltage deviation and occurrence of positive-sequence voltage sub harmonics. These conditions' effect on magnetic flux, currents, and winding temperature was analysed for various frequencies. For thermal computations, a hybrid field-circuit method was applied. The results of the numerical calculations and conducted empirical research are presented for a 3-kW, totally enclosed, fan-cooled machine.