Power quality improvement in wind energy system using HEX-STATCOM [articol]

Abstract

This paper work concentrates on power quality enhancement in Wind Energy System (WES) using 3-Phase, Hexagram-Static Compensator (HEX-SC). In this surroundings, the Permanent Magnet Synchronous Generator (PMSG) based 3 kW wind energy system is employed to implement HEXSC. The main objective of this HEX-SC is to improve the power quality in the proposed system, when WES output changes with the wind speed and also the variation of load. Furthermore, the implementation of HEX-SC reduces the power loss during low wind velocity and also due to the presence of Total Harmonic Distortions (THD) with enhanced power factor. In this research approach, the proposed system performance parameters namely frequency, output voltage and THD levels are examined for various wind velocities and variable load conditions. In addition, the excellence of HEX-SC is analyzed with Space Vector Pulse Width Modulation techniques (SVPWM). The simulation has been carried out for the proposed system using Matlab/Simulink software tool. Moreover, installing a HEX-SC in the WES will increase power transfer capability by improving the voltage stability and retaining a smooth voltage profile under different wind speed and load conditions. Finally, it has the ability to perform active filtering and also very useful for improvements in power quality.