This paper proposes the excitation system control of three phase
synchronous generator for improving the step response using an adaptive fuzzy
controller. The dynamic model and simulation of 3-phase synchronous generator
are proposed. The open loop voltage control responses under no-load and full-load
conditions are proposed too. The PI closed loop controller of excitation system is
illustrated as a conventional control method, which gives an acceptable operation
behavior of synchronous generator terminal voltage. An adaptive fuzzy inference
system is proposed in this paper as a close loop controller, which gives an ideal
performance in both of no-load and full-load conditions as compared with PI
controller to control the 3-phase synchronous generator excitation system.
Simulation results show the effectiveness of the proposed fuzzy controller schem.e
Which gives in fuzzy controller; rise time= 0.3 sec., overshot= 0%, settling time=
0.3 sec., and steady state error= 0%. Whereas, in PI controller; rise time= 0.55
sec., overshot= 20%, settling time= 2.8 sec., and steady state error= 0%.