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    Assessment study of shunt FACTS devices for improving dynamic behavior of induction motors

    , Article Sixth International Conference on Power Electronics and Drive Systems, PEDS 2005, Kualu Lumpur, 28 November 2005 through 1 December 2005 ; Volume 2 , 2005 , Pages 1352-1355 ; 0780392965 (ISBN); 9780780392960 (ISBN) Hedayati, M ; Oraee, H ; Sharif University of Technology
    An assessment study of two different shunt FACTS devices for compensating disturbances due to voltage variation in power systems is presented in this paper. Namely, Static Compensator (STATCOM) and Static Var Compensator (SVC) are Considered in this study. Eigen Value analysis and nonlinear time domain simulations for starting motor, motor in load varying state and short circuit on motor terminals show that STATCOM DC Voltage regulation has a better performance Compared to that of SVC. The result that will be presented in the paper will prove the superiorly of STATCOM over SVC in increasing motor speeding up and improving system voltage profile particularly at starting. © 2005 IEEE  

    Power system stability improvement using self-tuning fuzzy logic controlled STATCOM

    , Article EUROCON 2007 - The International Conference on Computer as a Tool, Warsaw, 9 September 2007 through 12 September 2007 ; December , 2007 , Pages 1444-1449 ; 142440813X (ISBN); 9781424408139 (ISBN) Ghafouri, A ; Zolghadri, M. R ; Ehsan, M ; Sharif University of Technology
    This paper presents the application of a fuzzy logic controlled Static Compensator (STATCOM) to improve stability of power system. The nonlinear fuzzy logic controller is used to overcome the problems generated by different uncertainties exist in power systems. Different input variables are used to design the controller. Parameters of the proposed controller are adjusted by means of Neural Network techniques to improve performance of the system. Proposed controller is implemented on a single machine infinite bus system to confirm the performance of the controller through simulation results