Design, Simulation and Experimental Realization of Nonlinear Controller for GSC of DFIG System
In a wind power generator using doubly fed induction
generator (DFIG), the three-phase pulse width modulation (PWM)
voltage source converter (VSC) is used as grid side converter (GSC)
and rotor side converter (RSC). The standard linear control laws
proposed for GSC provides not only instablity against comparatively
large-signal disturbances, but also the problem of stability due to
uncertainty of load and variations in parameters. In this paper, a
nonlinear controller is designed for grid side converter (GSC) of a
DFIG for wind power application. The nonlinear controller is
designed based on the input-output feedback linearization control
method. The resulting closed-loop system ensures a sufficient
stability region, make robust to variations in circuit parameters and
also exhibits good transient response. Computer simulations and
experimental results are presented to confirm the effectiveness of the
proposed control strategy.
[1] S. Heier, Grid Integration of Wind Energy Conversion Systems, John
Wiley & Sons, LTD., Chichester, England, 1998.
[2] R. Pena, J.C. Clare, G.M. Asher, "Doubly fed induction generator using
back-to-back PWM converters and its application to variable-speed
wind-energy generation," IEE Proc. Electric Power Applications, Vol.
143, No. 3, pp. 231 - 241, May. 1996.
[3] 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," Proc. Inst. Elect. Eng., vol. 150, no.
3, pp. 343-352, May 2003.
[4] L. Xu and Y. Wang, "Dynamic modeling and control of DFIG-based
wind turbines under unbalanced network conditions," IEEE Trans. on
Power Systems, vol. 22, Issue-1, pp. 314-323, Yr. 2007.
[5] M.K.Das, S.Chowdhury, S.P.Chowdhury and C.T. Gaunt, "Dynamics
behaviour of a grid connected DFIG for wind energy conversion during
disturbances," Universities Power Engineering Conference (UPEC),
Proceedings of 44th International Publication, pp. 1-5, Yr. 2009.
[6] L.Shuhui, T.A. Haskew, and S.Mazari, "Integrating electrical and
aerodynamic characteristics for DFIG speed control study, Power Sys.
Conference and Exposition, PSCE-09, IEEE/PES, pp. 1-8, Yr. 2009.
[7] M. Kayikci and J.V. Milanovic, "Dynamic contribution of DFIG-based
wind plants to system frequency disturbances," IEEE Trans. on Power
Systems, vol. 24, Issue.2, pp. 859-867, Yr. 2009.
[8] L.Shuhui and T.A. Haskew, "Analysis of decoupled d-q vector control
in DFIG Back-to-Back PWM Converter," IEEE Power Engineering
Society General Meeting, pp. 1-7, Yr.-2007.
[9] Y.Wang and L.Xu, "Control of DFIG-based wind generation systems
under unbalanced network supply," IEEE International Electric
Machines and drives Conference, IEMDC-07," vol. 1, pp. 430-435,
Yr. 2007.
[10] B.Pokharel and G. Wenzhong, "Mitigation of disturbances in DFIGbased
wind farm connected to weak distribution using STATCOM,"
IEEE North American Power Symposium (NAPS)," pp. 1-7, Yr. 2010.
[11] G.Iwanski, and W.Koczara, "Rotor current PI controllers in the method
of output voltage control of variable speed standalone DFIG," IEEE
International Symposium on Industrial Electronics, ISIE-08, pp.2450-
2455, Yr. 2008.
[12] L. Xu, "Coordinated control of DFIG-s rotor and grid side converters
during network unbalance," IEEE Trans on Power Electronics, vol. 23,
Issue. 3, pp. 1041-1049, Yr. 2008.
[13] P. Zhou, Y.He and D.Sun, "Improved direct power control of a DFIGbased
wind turbine network unbalance," IEEE Trans. on Power
Systems, vol. 24, Issue-11, pp. 2465-2474, Yr. 2009.
[14] S.Mishra, Y.Mishra, L. Fangxing and Z.Y. Dong, "TS-Fuzzy controlled
DFIG based wind energy conversion systems," IEEE Power & Energy
Society General Meeting, PES-09, pp. 1-7, Yr. 2009.
[15] J. Kearney, M.F. Conlon and E.Coyle, "The integrated control of rotor
side and grid side converters in a DFIG to reduce both power and torque
pulsations during network voltage unbalance conditions," Proceedings
of 44thInternational Universities Power Engineering Conference
(UPEC), pp. 1-5, Yr. 2009.
[16] M.Zhixin, F.Lingling, D.Osborn and S.Yuvarajan, "Control of DFIGBased
wind generation to improve interarea oscillation damping, " IEEE
Trans on Energy Conversion, vol.24, Issue. 2, pp. 415-422, Yr. 2009.
[17] J.Hu, H.Nian, H.Xu and Y.He, "Dynamic modeling and improved
control of DFIG under distorted grid voltage conditions," IEEE Trans
on Energy Conversion, Issue-99, pp. 1-13, Yr. 2010.
[18] L.Qu and W.Qiao, "Constant power control of DFIG wind turbines with
supercapacitor energy storage," IEEE Trans. on Industry Appln, Issue-
99, pp.1, Yr. 2010.
[19] M.Mohesani, M. Meshah, S.Islam and M.A.S. Masoum, "A novel
current regulator for DFIG wind turbines with enhanced performance
under unbalance supply," IEEE Power and Energy Society General
Meeting, pp. 1-8, Yr. 2010.
[20] X. Zhang, H.Li and Y. Wang, "Control of DFIG-based wind farms of
power network frequency support," International Conference on Power
System Technology (POWERCON), pp. 1-6, Yr. 2010.
[21] J.P.DaCosta, H. Pinheiro, T.Degner and G.Arnold, "Robust controller
for DFIG of grid connected wind turbines," IEEE Trans. on Industrial
Electronics, Issue-99, pp. 1, Yr. 2010.
[22] N.C.Sahoo, B.K. Panigrahi, P.K. Dash and G.Panda, "Application of a
multivariable feedback lineraization scheme for STATCOM Control,"
Electric Power Systems Research, Elesevier Publ. Pp. 81-92, Yr..2002.
[23] S.Mishra, B.K. Panigrahi and M.Tripathy, "A hybrid adaptive-
bacterial-foraging and feedback linerization scheme based DSTATCOM,"
IEEE International conference on Power System
Technology, POWERCON, pp. 1-6, Yr. 2004.
[1] S. Heier, Grid Integration of Wind Energy Conversion Systems, John
Wiley & Sons, LTD., Chichester, England, 1998.
[2] R. Pena, J.C. Clare, G.M. Asher, "Doubly fed induction generator using
back-to-back PWM converters and its application to variable-speed
wind-energy generation," IEE Proc. Electric Power Applications, Vol.
143, No. 3, pp. 231 - 241, May. 1996.
[3] 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," Proc. Inst. Elect. Eng., vol. 150, no.
3, pp. 343-352, May 2003.
[4] L. Xu and Y. Wang, "Dynamic modeling and control of DFIG-based
wind turbines under unbalanced network conditions," IEEE Trans. on
Power Systems, vol. 22, Issue-1, pp. 314-323, Yr. 2007.
[5] M.K.Das, S.Chowdhury, S.P.Chowdhury and C.T. Gaunt, "Dynamics
behaviour of a grid connected DFIG for wind energy conversion during
disturbances," Universities Power Engineering Conference (UPEC),
Proceedings of 44th International Publication, pp. 1-5, Yr. 2009.
[6] L.Shuhui, T.A. Haskew, and S.Mazari, "Integrating electrical and
aerodynamic characteristics for DFIG speed control study, Power Sys.
Conference and Exposition, PSCE-09, IEEE/PES, pp. 1-8, Yr. 2009.
[7] M. Kayikci and J.V. Milanovic, "Dynamic contribution of DFIG-based
wind plants to system frequency disturbances," IEEE Trans. on Power
Systems, vol. 24, Issue.2, pp. 859-867, Yr. 2009.
[8] L.Shuhui and T.A. Haskew, "Analysis of decoupled d-q vector control
in DFIG Back-to-Back PWM Converter," IEEE Power Engineering
Society General Meeting, pp. 1-7, Yr.-2007.
[9] Y.Wang and L.Xu, "Control of DFIG-based wind generation systems
under unbalanced network supply," IEEE International Electric
Machines and drives Conference, IEMDC-07," vol. 1, pp. 430-435,
Yr. 2007.
[10] B.Pokharel and G. Wenzhong, "Mitigation of disturbances in DFIGbased
wind farm connected to weak distribution using STATCOM,"
IEEE North American Power Symposium (NAPS)," pp. 1-7, Yr. 2010.
[11] G.Iwanski, and W.Koczara, "Rotor current PI controllers in the method
of output voltage control of variable speed standalone DFIG," IEEE
International Symposium on Industrial Electronics, ISIE-08, pp.2450-
2455, Yr. 2008.
[12] L. Xu, "Coordinated control of DFIG-s rotor and grid side converters
during network unbalance," IEEE Trans on Power Electronics, vol. 23,
Issue. 3, pp. 1041-1049, Yr. 2008.
[13] P. Zhou, Y.He and D.Sun, "Improved direct power control of a DFIGbased
wind turbine network unbalance," IEEE Trans. on Power
Systems, vol. 24, Issue-11, pp. 2465-2474, Yr. 2009.
[14] S.Mishra, Y.Mishra, L. Fangxing and Z.Y. Dong, "TS-Fuzzy controlled
DFIG based wind energy conversion systems," IEEE Power & Energy
Society General Meeting, PES-09, pp. 1-7, Yr. 2009.
[15] J. Kearney, M.F. Conlon and E.Coyle, "The integrated control of rotor
side and grid side converters in a DFIG to reduce both power and torque
pulsations during network voltage unbalance conditions," Proceedings
of 44thInternational Universities Power Engineering Conference
(UPEC), pp. 1-5, Yr. 2009.
[16] M.Zhixin, F.Lingling, D.Osborn and S.Yuvarajan, "Control of DFIGBased
wind generation to improve interarea oscillation damping, " IEEE
Trans on Energy Conversion, vol.24, Issue. 2, pp. 415-422, Yr. 2009.
[17] J.Hu, H.Nian, H.Xu and Y.He, "Dynamic modeling and improved
control of DFIG under distorted grid voltage conditions," IEEE Trans
on Energy Conversion, Issue-99, pp. 1-13, Yr. 2010.
[18] L.Qu and W.Qiao, "Constant power control of DFIG wind turbines with
supercapacitor energy storage," IEEE Trans. on Industry Appln, Issue-
99, pp.1, Yr. 2010.
[19] M.Mohesani, M. Meshah, S.Islam and M.A.S. Masoum, "A novel
current regulator for DFIG wind turbines with enhanced performance
under unbalance supply," IEEE Power and Energy Society General
Meeting, pp. 1-8, Yr. 2010.
[20] X. Zhang, H.Li and Y. Wang, "Control of DFIG-based wind farms of
power network frequency support," International Conference on Power
System Technology (POWERCON), pp. 1-6, Yr. 2010.
[21] J.P.DaCosta, H. Pinheiro, T.Degner and G.Arnold, "Robust controller
for DFIG of grid connected wind turbines," IEEE Trans. on Industrial
Electronics, Issue-99, pp. 1, Yr. 2010.
[22] N.C.Sahoo, B.K. Panigrahi, P.K. Dash and G.Panda, "Application of a
multivariable feedback lineraization scheme for STATCOM Control,"
Electric Power Systems Research, Elesevier Publ. Pp. 81-92, Yr..2002.
[23] S.Mishra, B.K. Panigrahi and M.Tripathy, "A hybrid adaptive-
bacterial-foraging and feedback linerization scheme based DSTATCOM,"
IEEE International conference on Power System
Technology, POWERCON, pp. 1-6, Yr. 2004.
@article{"International Journal of Electrical, Electronic and Communication Sciences:55135", author = "R.K. Behera and S.Behera", title = "Design, Simulation and Experimental Realization of Nonlinear Controller for GSC of DFIG System", abstract = "In a wind power generator using doubly fed induction
generator (DFIG), the three-phase pulse width modulation (PWM)
voltage source converter (VSC) is used as grid side converter (GSC)
and rotor side converter (RSC). The standard linear control laws
proposed for GSC provides not only instablity against comparatively
large-signal disturbances, but also the problem of stability due to
uncertainty of load and variations in parameters. In this paper, a
nonlinear controller is designed for grid side converter (GSC) of a
DFIG for wind power application. The nonlinear controller is
designed based on the input-output feedback linearization control
method. The resulting closed-loop system ensures a sufficient
stability region, make robust to variations in circuit parameters and
also exhibits good transient response. Computer simulations and
experimental results are presented to confirm the effectiveness of the
proposed control strategy.", keywords = "Doubly fed Induction Generator, grid side converter,machine side converter, dc link, feedback linearization.", volume = "5", number = "8", pages = "1021-8", }
