Voltage and Frequency control of wind diesel hybrid system with variable speed wind turbine

This paper deals with dynamic performance of wind diesel system with variable wind speed turbine. The quality of power supplied to the autonomous system is improved by controlling the frequency to the rated value. To improve the system characteristics, a variable speed operative wind generator: Doubly-Fed Induction Generator along with diesel generator in the isolated hybrid system is used. The simulation results of the proposed hybrid system are presented to demonstrate its effectiveness in meeting change in load demands along with change in wind speed. The system is also studied for a short circuit fault to ensure the stability. The performance of the proposed system is analyzed using MATLAB/SIMULINK and it is found that the fluctuations in power and frequency are minimum.