DESIGN OF A FUZZY MODIFIED MODEL REFERENCE ADAPTIVE CONTROLLER FOR A GAS TURBINE ROTOR SPEED CONTROL USING 1-S FUZZY MECHANISM

Abstract

Gas turbine used as a prime mover in an integrated electric propulsion technology. The gas turbine mechanism is numerously used largely as this is more efficient and also latest in the field of energy conversion. Through this mechanism the high pressurized energy of gas turbine is converted into mechanical energy through rotary motion of turbine which results into production of electrical power. In power plants a control system is designed to stabilize output frequency and output electrical voltages in presence of variable power demand which acts as disturbance in transmission and distribution system An this dissertation, various control techniques are designed for Montazer Ghaem power plant gas turbine (GE9001E). While designing, the identified model (linear) is correlated through fuel flow with the aim of controlling rotor speed of turbine during startup and power demand variation. First PID control technique has been employed for turbine rotor speed control in order to maintain desired level of demand power along with produced power. Later fuzzy mechanism also applied by designing fuzzy controller and Fuzzy PID - controller to maintain desired speed. In order to improve transient response along with good steady state response Fuzzy model reference adaptive controller (FMRAC) has been designed for gas turbine. The output response of FMRAC is compared with MRAC. The simulation results obtained through MATLAB Simulink shows that proposed FMRAC gives better transient response as compared to other proposed controllers like PID controller, Fuzzy controller, Fuzzy PID controller, MRAC while maintaining desired rotor speed of turbine.