Dynamics separation of induction machine models using gerschgorin's circles and singular perturbations

The authors present a development of reduced order models of the induction machine. The reduction is based on the application of Cerschgorin’s circles to separate the different dynamics. The siagular perturbation technique for determining the reduced models is applied. These twostages require well specified state matrix (dominant state matrix). Such matrix form is obtained by some algebraic transformations on the fundamental state matrix.