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This study suggests a novel and mathematical dynamic index for greatest coordinated control of Pulse
Width Modulation based AC link Series Compensator (PWMSC) and Power System Stabilizers (PSS) in
multi-machine networks. The planned new dynamic index is developed as a fitness function to reinforce
the oscillations damping under totally different loading conditions. A nonlinear constrained optimization
programming is applied for reducing the dynamic index based mostly fromcritical eigenvalues of the sys-
tems. The robustness of the coordinated control is reached directly through extending numerous loading
conditions from that of the nominal case. The best proficiency of the proposed control is showed through
simulations on a four-machine and sixteen-machine power networks for various conditions. Linear and
nonlinear analysis presents the high priority of the suggested dynamic index in tuning of the parameters
controller.
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