Vural,A.M.Bayindir,K.C.Department of Electrical & Electronics Engineering2024-07-052024-07-052010978-142446547-710.1109/TDC.2010.54842302-s2.0-77954793724https://doi.org/10.1109/TDC.2010.5484230https://hdl.handle.net/20.500.14411/3620STATCOM controlled power system shows highlynon-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. © 2010 IEEE.eninfo:eu-repo/semantics/closedAccessLead/lag compensatorMulti-parameter optimizationPI controllerSimplex algorithmSTATCOMStatic synchronous compensatorConference Object9