Equivalent Circuit of Single Phase Induction Motor

February 24, 2020

Equivalent Circuit of Single Phase Induction Motor

 

Based on Double revolving field theory, the equivalent circuit of the single-phase induction motor can be drawn. The circuit is drawn at two positions – standstill rotor condition blocked rotor condition.

The motor with blocked rotor condition acts as a transformer with its secondary winding short-circuited.

equivalent circuit of single phase induction motor
equivalent circuit of single-phase induction motor

In standstill rotor conditions, two rotating magnetic fields are in opposite directions with equally divided magnitudes and appear as connected in series.

single phase induction motor circuit in standstill rotor condition
single-phase induction motor circuit in standstill rotor condition

 

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