Comparison on Performance of Grid Connected DFIG-WT System using B2BC and NSC


Subir Datta,Subhasish Deb,Ksh. Robert Singh,





This paper presents a comparative study of the performances of a doubly fed induction generator (DFIG) based grid connected wind turbine (WT) system using back-to-back converter (B2BC) and nine-switch converter (NSC). The time domain simulink results of the system variables, under varying wind velocity, are presented and analyzed all the results in details. Results show that the B2BC- used with DFIG-WT system can be replaced by NSC under any wind speed.


I.A. M. Hava, R. Kerkman, and T. A. Lipo, “Carrier-based PWM-VSI over modulation strategies: analysis, comparison, design,” IEEE Transactions on Power Electronics, Vol. 13, no.4, July 1998, pp. 674–689.

II.B. H. Chowdhury, S. Chellapilla, “Double Fed Induction Generator Control for VariableSpeed Wind Power Generation,” Elsevier Power System Research, Vol.76, pp: 786-800, 2006.

III.C. Liu, B. Wu, N. R. Zargari, D. Xu, and J. Wang, “A novel three phase three-leg ac/ac converter using nine IGBTs,” IEEE Trans. Power Electron., vol. 24, pp. 1151–1160, 2009.

IV.C. Liu , B.Wu, N.Zargari and D.Xu, “A novel nine-switch PWM rectifier-inverter topology for three-phase UPS applications, ” Journal of European Power Electronics (EPE), vol. 19, pp. 1 -10, 2009.

V.C. Klumpner and F. Blaabjerg, “Experimental evaluation of ride-through capabilities for a matrix converter under short power interruptions,” IEEE Trans. Industrial Electronics, Vol. 49, pp. 315-324, 2002.

VI.F. Blaabjerg, S. Freysson, H. H. Hansen, and S. Hansen, “A new optimized space-vector modulation strategy for a component-minimized voltage source inverter,” IEEE Trans. Power Electron., vol. 12, pp. 704–714, 1997.

VII.F. Gao, L. Zhang, D. Li, P.C. Loh,Yi Tang and H. Gao, “Optimal pulse-width modulation of nine-switch converter, ” IEEE Transaction on PowerElectronics, vol. 25, pp. 2331-2343, 2010.

VIII.G. Li, M. Yin, M. Zhou and C. Zhao, “Decoupling control for multi terminal VSC HVDC based wind farm interconnection,” IEEE Power Engineering Society General Meeting, pp.1-6, 2007.

IX.Gui-Jia Su Hsu, J.S., “A five-leg inverter for driving a traction motor and a compressor motor,” IEEE Transactions on Power Electronics, vol. 21, pp. 687 -692, 2006.

X.H. Nikkhajoei, R. H. Lasseter, “Power quality enhancement of a wind-turbine generator under variable wind speeds usingmatrix converter,” Power Electronic Specialists Conference, pp. 1755-1761, 2008.

XI.Lie Xu, “Coordinated Control of DFIG’s Rotor and Grid Side Converters during Network Unbalance,” IEEE Trans. on Power Electronics, Vol. 23, pp.1041-1049, 2008.

XII.L. Holdsworth, X. G. Wu, J. B. Ekanayake and N. Jenkins, “Comparison of fixed speed and doubly-fed induction wind turbines during power system disturbances,” IEE Proc. Gener. Transm. Distrib., Vol. 150, pp. 343-352, 2003.

XIII.M.V.A. Nunes, H.H. Zurn, U.H. Bezerra, J.A. Pecas Lopes, R.G. Almeida, “Influence of the variable Speed wind Generators in Transient Stability Margin of the Conventional Generators Integrated in Electrical Grids,” IEEE Transactions on Energy Conversion, Vol. 21, pp257-264, 2006.

XIV.M. Jones, S. N. Vukosavic, D. Dujic, E. Levi, and P. Wright, “Five-leg inverter PWM technique for reduced switch count two-motor constant power applications,” IET Proc. Electric Power Application, vol. 2, pp. 275–287, 2008.

XV.O. Ojo, “The generalized discontinuous PWM scheme for three phase voltage source inverters,” IEEE Trans. Ind. Electron., vol.51, pp.1280-1289, 2004.

XVI.P. C. Loh, F. Blaabjerg, F. Gao, A. Baby, and D. A. C. Tan, “Pulse width modulation of neutral-point-clamped indirect matrix converter,” IEEE Trans. Ind. Application, vol. 44, pp. 1805–1814, 2008.

XVII.R.G. Almeida, E.D. Castronuovo, J.A. Pacas Lopes, “Optimum Control in Wind Parks when Carrying out system Operator Requests,” IEEE Transactions Power System. Vol.19, pp 1942-1950, 2006.

XVIII.R. Cardenas, R. Pena, G. Tobar, J. Clare, P. Wheeler, G. Asher, “Stability Analysis of a Wind Energy Conversion System Based Doubly Fed Induction Generator Fed By a Matrix Converter,” IEEE Trans. on Industrial Electronics, Vol. 56, pp.4194-4206, 2009.

XIX.S. Datta, J. P. Mishra and A. K. Roy, “Modified Speed Sensor-less Grid Connected DFIG based WECS”, Indian Journal of Science of Technology, Vol. 8, Issue No. 16, pp.1-12, 2015.

XX.S. Datta, J. P. Mishra and A. K. Roy, “Operation and control of a DFIG-based grid-connected WECS using NSC during grid fault and with unbalanced non-linear load”, International Journal of Ambient Energy, Vol.39, No.7, pp.732-742, 2018.

XXI.T. Kominami and Y. Fujimoto, “A novel nine-switch inverter for independent control of two three-phase loads,” IEEE Industry Applications Society Annual Conference (IAS), pp. 2346-2350, 2007.

XXII.Y. Lei, A. Mullane, G. Lightbody, R. Yacamini, “ Modeling of the wind turbine with a Doubly fed Induction Generator for Grid Integration Studies,” IEEE Transactions on Energy Conversion, Vol. 21, pp.257-264, 2006.

XXIII.Z. Lei, P. C. Loh and F. Gao, “An integrated nine-switch power conditioner for power quality enhancement and voltage sag mitigation,” IEEE Transaction on Power Electronics, vol. 27, pp. 1177-1190, 2012.

Subir Datta, Subhasish Deb, Ksh. Robert Singh View Download