The vector diagrams of the induction machine, like those of a transformer, are constructed in accordance with the equivalent. T-circuit of the machine, which correspond to the physical working conditions of the machine. The above diagrams are plotted in this case for one phase of the machine with the rotor winding referred to its stator winding.
Motor operation. This condition, as was indicated previously, is the main operating condition of an induction machine. When the machine operates as motor energy is transmitted through the magnetic field from the primary side to the secondary as in a transformer. Therefore, the vector diagram of an induction machine during motor operation is quite similar to the vector diagram of a transformer.
