Power Quality Improvement of Load Connected Grid Interfaced Inverter by Using FLC Merged Cascaded Current–Voltage Control Technique
|International Journal of Electrical and Electronics Engineering|
|© 2014 by SSRG - IJEEE Journal|
|Volume 1 Issue 9|
|Year of Publication : 2014|
|Authors : K.Jaganmohangoud , P.Varaprasada Reddy|
K.Jaganmohangoud , P.Varaprasada Reddy, "Power Quality Improvement of Load Connected Grid Interfaced Inverter by Using FLC Merged Cascaded Current–Voltage Control Technique" SSRG International Journal of Electrical and Electronics Engineering 1.9 (2014): 1-4.
K.Jaganmohangoud , P.Varaprasada Reddy,(2014). Power Quality Improvement of Load Connected Grid Interfaced Inverter by Using FLC Merged Cascaded Current–Voltage Control Technique. SSRG International Journal of Electrical and Electronics Engineering 1(9), 1-4.
This paper proposes wind energy generation utilization and its grid penetration in electrical grid is popular in world wide. The voltage control strategy is proposed for inverters to simultaneously improve the power quality of the inverter local load voltage and the current exchanged with the grid. And also it enables seamless transfer of the operation mode from stand-alone to grid-connected or vice versa. Fuzzy control scheme includes an inner voltage loop and an outer current loop with both controllers designed by using Fuzzy logic control (FLC) and H∞ repetitive control strategy. It leads to a very low THD in both the inverter local load voltage and the current exchanged with the grid at the same time. The proposed control strategy can be used to single-phase inverters and three-phase four-wire inverters. It enables grid-connected inverters to inject balanced clean currents to the grid even when the local loads (if any) are unbalanced and/or nonlinear. Simulation under different scenarios, with comparisons made to the current repetitive controller replaced with a current proportional–resonant controller, is presented to demonstrate the excellent performance of the proposed strategy.
. J. G. Slootweg and W. L. Kling, Wind power in power systems, John Wiley and Sons, Ltd., 2005.
. A. Morales and J.C. Maun: “Power quality responsibilities by grid impedance assessment at a wind power production”, CIRED, Barcelona, Spain, 12-15 May 2003.
. S. W. Mohod and M. V. Aware,” Power quality issues & its mitigation technique in wind energy conversion,” in Proc. of IEEE Int. Conf. Quality Power & Harmonic, Wollongong, Australia, 2008
. Dr. Rakesh Saxena, Sonali Barod, “Analysis of power Quality in power Supplies”, International Journal of Scientific & Engineering Research Volume 3, Issue 8, August-2012
. Power Quality issues standards and guide lines, IEEE, Vol-32, May96
. N. G. Hingorani and L. Gyugyi, Understanding FACTS: Concepts and Technology of Flexible AC Transmission Systems, New York: IEEE, 2000.
. A.P. Jayam, B.H. Chowdhury, “Improving the dynamic performance of wind farms with STATCOM”, IEEE, 2009.
. Daad-Saoud Z., “Application of STATCOMs to Wind Farms,” IEE Proc. Gener. Transm.Distrib.Vol.145, No.5, pp.511-517, 1998.
. F. Wang, “Design of SSSC Damping Controller to Improve Power System Oscillation Stability, “0-7803-5546- 6/99/$10.00 © 1999 IEEE.
. A.M Vural and M.Tumay, “Steady State Analysis of Unified Power flow controller: Mathematical Modeling and Simulation studies,” in Proceedings of the IEEE Power tech Conference June 23-, Bologna, Italy. 2003.
. Vibhor Gupta, “Study and Effects of UPFC and its Control System for Power Flow Control and Voltage Injection in a Power System,” International Journal of Engineering Science and Technology Vol. 2(7), 2010.
Harmonics, Power quality, FLC.