Publication

Abstract : This paper focuses to develop a mathematical model for heavy duty gas turbine and to design appropriate secondary controller for the turbine to improve the system response. On the base of large single model suggested by Rowen, small signal model is developed in this work. As secondary controller, Proportional Integral Derivative (PID) and Fractional Order Proportional Integral Derivative (FOPID) controller is used in this paper. Ziegler Nichols' and Simulated Annealing is the tuning methologies adopted for tuning PID and FOPID controllers and are used under large and small signal model for retaining the speed and the frequency to nominal values. In this work, Simulated Annealing tuned FOPID controller responds at a faster rate with good response when compared to other controllers in both mathematical models of large and small signal of heavy duty gas turbine.