Abstract:
A fuzzy logic based controller (FLC) has been developed to perform the function of the a power system stabilizer (PSS), in order to maintain the generator output voltage to 120 volts and frequency to 60 hertz by using the Frequency and AC voltages as the controller inputs variables to fuzzy inference system which created through the Matlab .
The complete range for the variation of each of the two controller inputs is represented by system rule base consist of (3x3) decision table 9 rules .the FLC design steps and a procedure for tuning its parameters are described Simulation studies for a variety of disturbances on the power system with the FLC based power system stabilizer demonstrate its effectiveness in improving system performance and the ability of the design to control the system to eliminate any non linearity resulting satisfied outputs .
