Abstract—The effectiveness of power system stabilizer (PSS) in providing damping and improving the dynamic response is well established. In this paper, the performance of single machine infinite bus is studied with fuzzy power system stabilizer (FPSS). The generator is represented by the standard K-coefficients as second order system. The mechanism to discuss the rules is described and the performance is investigated for trapezoidal, triangular and gaussian membership functions of input and output variables. For FPSS, speed deviation and acceleration deviation are taken as input. The system is simulated in SIMULINK environment and performance is investigated for transients due to change in input of varying magnitude.

Index Terms—Power System Stabilizer, Synchronous Machine, Single Machine Infinite Bus System, Fuzzy Logic, Simulink.

Neeraj Gupta (email: neeraj5822@gmail.com) and Sanjay K. Jain (email : skjain@thapar.edu) are with Electrical & Instrumentation Engineering Department, Thapar University, Patiala, India.

Cite: Neeraj Gupta and Sanjay K. Jain, "Comparative Analysis of Fuzzy Power System Stabilizer Using Different Membership Functions," International Journal of Computer and Electrical Engineering vol. 2, no. 2, pp. 262-267, 2010.