Vural, A. M.Bayindir, K. C.2024-10-062024-10-0620109781424465477https://hdl.handle.net/20.500.14411/8787STATCOM controlled power system shows highly non-linear characteristics. In such a structure, linear controllers are easy to apply but difficult to tune. Fine tuning of controller parameters is necessary to meet transient performance requirements. In this paper, control system parameters of a STATCOM which is constructed from two six-pulse voltage source based converters are optimized by Simplex algorithm which is a non-linear and non-gradient method. System objective function to be minimized is based on a performance index and expressed in terms of measured and desired values of system variables. After optimization, performance of STATCOM control system consisting of two PI controllers and two leag/lag compensators has been tested and verified through a number of simulation studies investigating step-response performance. Precise and quick responses have been observed with optimized parameters.eninfo:eu-repo/semantics/closedAccessStatic synchronous compensatorSTATCOMPI controllerlead/lag compensatormulti-parameter optimizationSimplex algorithmConference ObjectWOS:0002875308000352