Equivalent Circuit for a 3-phase Induction Motor & The Mechanical power is taken in the Equivalent Circuit.

       EQUIVALENT CIRCUIT OF INDUCTION MOTOR:


   
•    In the case of a transformer, the secondary values may be transferred to the primary and vice versa.

•     To shift the impedance from secondary to primary, it should be divided by K2.


•    To shift the impedance from primary to secondary, it should be multiplied by K2.

•    The equivalent circuit of an induction motor where all the values are transferred to primary i.e. stator as shown


Performance calculation

    Steady state analysis of the induction motor under variable frequency supply can be based on the equivalent circuit shown in fig:












 


























                                          





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