• POLOJU UMARANI
• S.YASODA KRISHNA

In this paper discussed, Power Quality Improvement for a Grid Connected Wind Turbine Energy System Employing Fuzzy Controllers. The Grid connected wind energy systems are required to comply with strict technical and regulatory frameworks to ensure safe, reliable and efficient operation of overall network. The extensive use of power electronics based equipment and non-linear loads at PCC generate harmonic currents, which may deteriorate the quality of power. The methods of harmonic current compensation play a crucial part in the performance of active power filter. Traditionally, active power filters have been controlled using pre tuned controllers, such as PI-type or adaptive, for the control of current as well as the dc-voltage loops. PI controllers must be designed based on the equivalent linear model. Predictive controllers use the nonlinear model, which is closer to real operating conditions in order to improve the performance and life of the power switches of voltage source inverter (VSI), reduces its switching frequency. An active power filter implemented with cascaded multilevel inverter using a fuzzy control scheme is presented in this paper. Fuzzy current control algorithm is based on the system model. The compensation performance of the proposed active power filter and the associated control scheme under steady state and Transient operating conditions is demonstrated through simulations using MATLAB/SIMULINK. The main aim of the paper is to achieve the maximum benefits with the interfacing inverters when wind turbine energy system is connected to the grid. The proposed methodology improves the quality of power at PCC.

Wind Energy Systems, Fuzzy, Power Quality at PCC.

"Improvement of Power Quality in Grid Connected Wind Energy System", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.162-168, June-2018, Available :http://www.jetir.org/papers/JETIR1806720.pdf

"Improvement of Power Quality in Grid Connected Wind Energy System", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp162-168, June-2018, Available at : http://www.jetir.org/papers/JETIR1806720.pdf