Nonlinear Equivalent Circuit of Induction Machine

The paper deals with a construction of a nonlinear equivalent circuit of induction machines. There is presented a way of referring all electrical parameters between usually used equivalent circuits in form of T-circuit and Gamma-circuit. A nonlinearity in the equivalent circuit of induction machines is represented with a nonlinear magnetizing inductance dependent on an actual value of flux linkage. The flux linkage is strongly dependent on actual loading the machine, i.e., on the slip. An introduced theory is presented on a 2.2kW induction motor.