• A. L. L. F. Murari
  • J. A. T. Altuna
  • K. A. C. Chirapo
  • A. Pelizari
  • A. J. Sguarezi Filho




Electromagnetic core analysis, DFIG, Power controller


The energy demand by modern society grows every day that allied with sustainable development requires the use of alternative sources in the new energy matrix. In this context, the wind energy as source by using a doubly-fed induction generator stands out due to its operational savings but still faces some conflicts in its power control. This paper proposes a state feedback plus integral controller for rotor current control. In order to verify the controller operation, an electromagnetic finite element analysis simulation of the interior of the machine was carried  out, assuring the non-saturation of the core, which would lead to a control instability and it can increase the machine losses. For this, a machine modeling was presented into state equations in order to establish a power control diagram. The results of electromagnetic simulation and the experimental bench results when united ensure the correct functioning of the proposed system and the satisfactory efficiency of the controller. In this way, it can be concluded that the use of this control technique in counterpart with the conventional PI increases the response time of the system without affecting the electromagnetic dynamics of the generator.


[1] G. Abad, J. López, M. A. Rodríguez, L. Marroyo, and G. Iwanski, Doubly Fed Induction Machine: Modeling and Control
for Wind Energy Generation Application. Wiley-IEEE Press, 2011.
[2] R. Zhu and Z. Chen, “Closure to discussion on ”virtual damping flux-based lvrt control for dfig-based wind turbine,”
IEEE Transactions on Energy Conversion, vol. 31, no. 1, pp. 408–409, March 2016.
[3] B. Hopfensperger, D. J. Atkinson, and R. A. Lakin, “Stator-flux-oriented control of a doubly-fed induction machine with
and without position encoder,” IEEE Proc.-Electr. Power Applications, vol. 47, no. 4, pp. 241–250, April 2000.
[4] B. H. Chowdhury and S. Chellapilla, “Double-fed induction generation control for variable speed wind power
generation,” Electric Power System Research, vol. 76, pp. 786–800, June 2006.
[5] A. Tapia, G. Tapia, J. X. Ostolaza, and J. R. Saenz, “Modeling and control of a wind turbine driven doubly fed induction
generator,” IEEE Transactions on Energy Conversion, vol. 18, no. 2, pp. 194–204, June 2003.
[6] F. Poitiers, T. Bouaouiche and M. Machmoum, “Advanced control of a doubly-fed induction generator for wind energy
conversion,” Electric Power Systems Research, vol. 79, no. 7, pp.1085–1096, July 2009.
[7] A. L. L. F. Murari, J. A. T. Altuna, R. V. Jacomini, C. M. R. Osorio, J. S. S. Chaves, and A. J. Sguarezi Filho, “A proposal
of project of pi controller gains used on the control of doubly-fed induction generators,” IEEE Latin America
Transactions, vol. 15, no. 2, pp. 173–180, Feb 2017.
[8] M. Mohseni, S. M. Islam, and M. A. S. Masoum, “Enhanced hysteresis-based current regulators in vector control of DFIG
wind turbines,” IEEE Transactions on Power Electronics, vol. 26, no. 1, pp. 223–234, Jan 2011.
[9] Z. Xin-Fang, X. Da-Ping, and L. Yi-Bing, “Predictive functional control of a doubly fed induction generator for variable
speed wind turbines,” In IEEE World Congress on Intelligent Control and Automation, vol. 4, pp. 3315–3319, June 2004.
[10] J. Morren and S. W. H. de Haan, “Ride through of wind turbines with doubly-fed induction generator during a voltage
dip,” IEEE Transactions on Energy Conversion, vol. 20, no. 2, pp. 435–441, June 2005.
[11] X. C. Guo, and Y. Gong, “Decoupled control of active and reactive power for a grid-connected doubly-fed induction
generator,” In Third International Conference on Electric Utility Deregulation and Restructuring and Power
Technologies DRPT 2008, pp 2620–2625, April 2008.
[12] S. Mishra, Y. Mishra, Fangxing Li, and Z.Y. Dong, “Ts-fuzzy controlled dfig based wind energy conversion systems,”
IEEE Power Energy Society General Meeting PES ’09, pp. 1–7, July 2009.
[13] E. Kamal, M. Oueidat, A. Aitouche, and R. Ghorbani, “Robust scheduler fuzzy controller of DFIG wind energy systems,”
IEEE Transactions on Sustainable Energy, vol. 4, no. 3, pp. 706–715, July 2013.
[14] A. J. Sguarezi Filho and E. Ruppert Filho, “Model-based predictive control applied to the doubly-fed induction generator
direct power control,” IEEE Transactions on Sustainable Energy, vol. 3, no. 3, pp. 398–406, July 2012.
[15] R. V. Jacomini, F. S. Trindade, A. J. Sguarezi Filho, and E. Ruppert Filho, “Decoupled power control for doubly-fed
induction generator using sliding-mode control,” Przeglad Elektrotechniczny, vol. 8, no. 89, pp. 100–105, August 2013.
[16] A. Susperregui, M. I. Martinez, I. Zubia, and G. Tapia, “Design and tuning of fixed switching-frequency second-order
sliding-mode controller for doubly fed induction generator power control,” IET Electric Power Applications, vol. 6, no.
9, pp. 696–706, December 2012.
[17] T. D. Strous, X. Wang, H. Polinder, and J. A. Ferreira, “Saturation in brushless doubly-fed induction machines,” In 8th
IET International Conference on Power Electronics, Machines and Drives (PEMD 2016), pp. 1–7, April 2016.
[18] X. Wang, T. D. Strous, D. Lahaye, H. Polinder, and J. A. Ferreira, “Finite element modeling of brushless doubly-fed
induction machine based on magneto-static simulation,” In 2015 IEEE International Electric Machines Drives
Conference (IEMDC), pp. 315–321, May 2015.
[19] W. Leonhard, Control of Electrical Drives. Springer-Verlag Berlin Heidelberg New York Tokyo, 1985.
[20] J. Holtz, J. Quan, J. Pontt, J. Rodríguez, P. Newman, and H. Miranda, “Design of fast and robust current regulators for
high-power drives based on complex state variables,” IEEE Transactions Industrial Applications, vol. 40, no. 5, pp. 1388–
1397, September/October 2004.
[21] A. J. Sguarezi Filho and E. Ruppert Filho, “The complex controller for three-phase induction motor direct torque control,”
SBA Controle e Automação, vol. 20, no.2, pp. 256–262, 2009.
[22] K. Ogata, Engenharia de Controle Moderno. LTC, 2000.
[23] R. C. Dorf and R. H. Bishop, Modern Control Systems Analysis & Design. Addison Wesley, 1998.




How to Cite

A. L. L. F. Murari, J. A. T. Altuna, K. A. C. Chirapo, A. Pelizari, & A. J. Sguarezi Filho. (2020). ELECTROMAGNETIC CORE ANALYSIS OF A DFIG STATE-FEEDBACK POWER CONTROLLER. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), 18(3), 343–357. https://doi.org/10.1590/2179-10742019v18i31497



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