Using the circuit theory to derive the mathematical models of AC machines. a review

Modeling of ac machines with predetermination of dynamic operation even in design stage appears a real necessity. On this base only, one can perform an accurate determination of parameters and constructive solutions of machine. In the paper, the hypotheses in which is possible a simple utilization of circuit theory, which operates with lumped parameters are underlined. It shows that is possible to take into account the basic processes of machine, as well as magnetic saturation and saliency (for synchronous machines). The paper presents significant results of simulation using the models proposed by authors, based on above considerations.