Voltage Stability Improvement of an Asynchronous Wind Turbine using Static Var Compensator with Single Input Fuzzy Logic Controller

In this paper an attempt has been made to analyze the behavior of an asynchronous wind turbine based on three-phase Self-Excited Induction Generator (SEIG) operating with a Static Var Compensator (SVC) as voltage regulator under close loop condition. The simulation results of the dynamic model developed in this work have shown that the proposed Single Input Fuzzy Logic Controller (SIFLC) can effectively select the proper value of the control parameter a and ensure a good management of reactive power flow between the system and the SVC FC-TCR type. The control strategy used has therefore reduced the voltage fluctuation and improved its stability under variable wind speed and load circumstances.