Modal analysis of synchronous machine dynamics

A theory for the asymptotic modal decomposition of a linear multivariable feedback system subject to high gain output feedback has been developed and applied to the ideal synchronous machine by identifying the latter with such a high gain output feedback system. This new conceptualization leading to the asymptotic decoupling of machine modes brings a unified and rigorous understanding to synchronous machine dynamics. The numerical simulation runs show that the asymptotic decoupling approximation is highly accurate for a wide range of situations.