Abstract
A solution to the conflicting requirements in induction motor modeling is to use pseudo-stationary finite element methods from complex currents and potentials, together with a slip-frequency transformation in the rotor. The coupling impedance method provides a powerful tool for modeling which relies upon the calculation of `mutual impedances' which link the current flowing in each circuit in the machine to the voltage it induces in itself and in every other circuit. The models used in control algorithms have to be very simple in order to facilitate real-time execution and to trade accuracy for simplicity and computational convenience in which the space vector method has the advantages.