A general-purpose turbo-alternator model

Effects of system nonlinearities on synchronous machine control

“…Park's equations (96,97), is the use of analog computers and provides a more detailed representation of the synchronous machine (2,3,10,13,79,87,109,110,115,116,118,119).…”

“…The Increasing complexity, both in design and operations, of the present day power systems requires more detailed system models and one of the many ways of providing the necessary detail is to include, in one form or another, the system nonlinearities (57,89,91,94,104,108,109,116,119,136,142).…”

“…While various authors neglect saturation com pletely, others represent saturation only in the direct axis of the machine and a few represent saturation in both the direct and quadrature axes (14,25,36,57,72,89,90,91,94,108,109,119).…”

“…Hence representing saturation effects in the direct and quadrature axes is still to be considered an approximation (108,109,119).…”

“…Several authors have emphasized the need to represent some or all of these nonlinearities in stability and related studies (14,25,36,40,57,72,89,91,94,108,109,119,131,143).…”