Authors:Maheswari Muthusamy,A.K. Parvathy,
Keywords:Doubly Fed Induction Generator,LVRT,ANFIS,Computational Intelligence,
AbstractWind energy is increasingly used as renewable energy worldwide. According to grid codes, wind turbines (WT) should essentially be coupled to grid throughout as well as following fault and source reactive power toward the grid with an objective of maintaining grid voltage. Doubly fed induction generator (DFIG), a wind turbine type enabling speed adjustment, is getting established currently in wind industry. Many DFIGs employ crowbar-based system to shelter the converter at the rotor side during disturbed and/or distorted grid voltage circumstances. Although it helps in protecting the generator, it does not warrant an appropriate grid support. This shortcoming led to designing anew coordinated controller that excludes or even cancels the need of a crowbar. This paper proposes fault confrontation controller (FCC) design to augment the feature -of low voltage ride through (LVRT) in this turbine. Considering the system’s nonlinear nature, an attractive FCC was constructed using computational intelligence (CI) techniques, namely fuzzy logic, back propagation network (BPN) and adaptive neuron fuzzy inference system (ANFIS).The simulation study demonstrates that the ANFIS system gives the best results for the proposed system.
I. Abad. G, López. J, Rodríguez. M, Marroyo. L, Iwanski. G. “Doubly Fed Induction Machine: Modeling and Control for Wind Energy Generation Applications,” Wiley-IEEE Press, 2011.
II. A.Causebrook, D. J. Atkinson, and A. G. Jack, “Fault ride-through of large wind farms using series dynamic braking resistors (March 2007),” IEEE Trans. Power Syst., vol. 22, no. 3, pp.966-975, Aug.2007.
III. Chrstian Wessels, Fabian Gebhardt and Friedrich Wilhelm Fuchs. “Fault Ride Through of DFIG Wind Turbine Using a Dynamic Voltage Restorer During Symmetrical and Asymmetrical Grid Faults,”IEEETrans.Power Electron, vol.26,no.3 pp.807-815, March 2011.
IV. Erlich, H. Wrede, and C. Feltes, “Dynamic behavior of DFIG-based wind turbines during grid faults,” in Proc. Power Convers. Conf, Nagoya, Japan, Apr. 2-5, 2007.
V. GWEC,Global Wind 2014 Report, Technical Report, The Global Wind Energy Council, 2015, Available: http://www.gwec.net/publications/ (online).
VI. http://www.cwet.tn.nic.in/html/information_wcw.html (accessed August 2018)
VII. Hu S, LinX,KangY,ZouX.An improved low-voltage ride through control strategy of doubly fed induction generator during grid faults. IEEE Trans Power Electron 2011;26(12):3653–65.
VIII. Jadhav HT, Roy R. A comprehensive review on the grid integration of doubly fed induction generator, Electr Power Energy Syst 2013:49:8-18.
IX. J. Yang, John E. Fletcher, and J. O’Reilly “A Series-Dynamic-Resistor-Based Converter Protection Scheme for Doubly-Fed Induction Generator During Various Fault Conditions” IEEE Trans. Energy. Conv, vol. 25, NO. 2, June 2010.
X. K. Protsenko and D. Xu, “Modeling and control of brushless doubly-fed induction generators in wind energy applications,” IEEE Trans. Power Electron., vol. 23, no. 3, pp. 1191–1197, May 2008.
XI. M. Liserre, R. Cardenas, M. Molinas, and J. Rodriguez, “Overview of multi-MW wind turbines and wind parks,” IEEE trans.Ind.Electron.,vol.58,no.4,pp.1081-1095,Apr.2011.
XII. M. Tsili and S. Papathanassiou, “A review of grid code Technical requirements for wind farms,” IET Renew.PowerGener., vol.3,no.3,pp.308-332,Sep.2009.
XIII. Noureldeem O. Behavior of DFIG wind turbines with crowbar protection under short circuit. Int J ElectrComputSci, IJECS-IJENS 2012;12(3):32–7.
XIV. Pannel G, Atkinson DJ, Zahawi B. Minimum-threshold crowbar for a fault-ride- through grid-code-compliant DFIG windturbine, IEEETrans Energy Convers 2010;25(3):750–9.
XV. QiaoW, Venayagamoorthy GK, Harley RG. Real-time implementation of a STATCOM on a wind farm equipped with doubly fed induction generators. IEEE TransIndAppl2009; 45(1):98–107.
XVI. Z.Chen, J.M.Guerrero, and F.Blaabjerg, “A review of the state of the art of power electronics for wind turbines,” IEEE Trans.Power Electron., vol.24, no.8,pp.1859-1875, Aug 2009.