Damping of Power Oscillations in Salient-Pole Machines with Static Exciters

Effects of system nonlinearities on synchronous machine control

“…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).…”

“…The "induced" damping is usually not enough to combat the problems of stability and control of a power system. An evidence of this is the existence of extensive literature on how to best produce "forced" damping (14,34,44,57,59,77,91,(111)(112)(113)(114)(115)(116)136).…”

“…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).…”

Effects of system nonlinearities on synchronous machine control

“…At present there is no general agreement concerning representation of machine saturation. 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).…”

“…Comparison of results for model IV and the slow exciter with Tj^ constant and a step change in 108 13 Comparison of results for model IV and the fast exciter with T^jj constant and a step change in v^gf 109 14 Average values of and Xq in per unit for typical synchronous machines 118 15 Excitation system parameters 160 Table 29 230 29…”