Analysis of the induction machine substituting circuit

Abstract

Identification of the induction machine substituting circuit parameters is very difficult despite the fact that induction machines are the simplest of all. This is caused by the fact that electrical quantities cannot be measured in the rotor cage. In addition there is proved in the literature, that classical Γ-network includes too much freedom degrees (i.e. 4), therefore it cannot be identified unequivocally. On the other hand, the G-network includes only 3 freedom degrees, and, based on this fact, it is identifiable absolutely unequivocally. Therefore there are derived equations for the exact mutual transformation of the parameters of individual substituting circuits (T-, Γ-, and inverse Ψ-network).