Overview of control systems for the operation of DFIGs in wind energy applications

IEEE Transactions on Industrial Electronics

Volumn 60, Issue 7, 2013, Pages 2776-2798

  Cardenas, Roberto ^a   Pena, Rubén ^b   Alepuz, Salvador ^c   Asher, Greg ^d  

^a UNIVERSITY OF CHILE   (Chile)

^b UNIVERSITY OF CONCEPCIÓN   (Chile)

^c UNIVERSITAT POLITÈCNICA DE CATALUNYA   (Spain)

^d UNIVERSITY OF NOTTINGHAM   (United Kingdom)

Author keywords

Control strategies; crowbar; doubly fed induction generator (DFIG); low voltage ride through (LVRT); reactive support; robust controller; voltage unbalance; wind turbine

Indexed keywords

ASYNCHRONOUS GENERATORS; CONTROL SYSTEMS; ELECTRIC FAULT CURRENTS; WIND TURBINES;

CONTROL STRATEGIES; CROWBAR; DOUBLY FED INDUCTION GENERATORS; LOWVOLTAGE RIDE THROUGH (LVRT); REACTIVE SUPPORT; ROBUST CONTROLLERS; VOLTAGE UNBALANCES;

WIND POWER;

EID: 84874831311     PISSN: 02780046     EISSN: None     Source Type: Journal    
DOI: 10.1109/TIE.2013.2243372     Document Type: Article

References (228)

1. W. Leonhard, Control of Electrical Drives. New York, NY, USA: Springer-Verlag, 2001.
2. B. Bose, Modern Power Electronics and AC Drives. Englewood Cliffs, NJ, USA: Prentice-Hall, 2002.
3. 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.
4. Web site "The wind Power Net," Accessed on May 2012. [Online]. Available: http://www.thewindpower.net
5. L. H. Hansen, L. Helle, F. Blaabjerg, E. Ritchie, and S. Munk-Nielsen, "Conceptual survey of Generators and Power Electronics for Wind Turbines," Risø Nat. Lab., Roskilde, Denmark, Tech. Rep., 2001.
6. H. Li, Z. Chen, and H. Polinder, "Optimization of multibrid permanentmagnet wind generator systems," IEEE Trans. Energy Convers., vol. 24, no. 1, pp. 82-92, Mar. 2009.
7. H. Polinder, F. F. A. van der Pijl, G.-J. de Vilder, and P. J. Tavner, "Comparison of direct-drive and geared generator concepts for wind turbines," IEEE Trans. Energy Convers., vol. 21, no. 3, pp. 725-733, Sep. 2006. (Pubitemid 46445161)
8. H. Polinder, F. F. A. van der Pijl, G.-J. de Vilder, and P. Tavner, "Comparison of direct-drive and geared generator concepts for wind turbines," in Proc. IEEE Int. Conf. Elect. Mach. Drives, 2005, pp. 543-550. (Pubitemid 44461360)
9. Enercon. (2010). ENERCON wind energy converters Technology & Service, Aurich, Germany. [Online]. Available: http://www.enercon.de/p/downloads/EN-Eng- TandS-0710.pdf
10. V. Delli Colli, F. Marignetti, and C. Attaianese, "Analytical and multiphysics approach to the optimal design of a 10-MW DFIG for directdrive wind turbines," IEEE Trans. Ind. Electron., vol. 59, no. 7, pp. 2791-2799, Jul. 2012.
11. C. Xia, Q. Geng, X. Gu, T. Shi, and Z. Song, "Input-output feedback linearization and speed control of a surface permanent-magnet synchronous wind generator with the boost-chopper converter," IEEE Trans. Ind. Electron., vol. 59, no. 9, pp. 3489-3500, Sep. 2012.
12. J. M. Espi and J. Castello, "Wind turbine generation system with optimized DC-link design and control," IEEE Trans. Ind. Electron., vol. 60, no. 3, pp. 919-929, Mar. 2013.
13. Vestas, Last Accesed on Sep. 2012. [Online]. Available: http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview.aspx#/ vestas-univers
14. Clipper, Last Accessed on September 2012. [Online]. Available: http://www.clipperwind.com/productline.html
15. R. Pena, J. C. Clare, and G. M. Asher, "Doubly fed induction generator using back-to-backPWMconverters and its application to variable-speed wind-energy generation," Proc. Inst. Elect. Eng.-Elect. Power Appl., vol. 143, no. 3, pp. 231-241, May 1996. (Pubitemid 126760209)
16. R. Pena, J. C. Clare, and G. M. Asher, "A doubly fed induction generator using back-to-back PWM converters supplying an isolated load from a variable speed wind turbine," Proc. Inst. Elect. Eng.-Elect. Power Appl., vol. 143, no. 5, pp. 380-387, Sep. 1996. (Pubitemid 126760218)
17. S. Muller, M. Deicke, and R. W. De Doncker, "Doubly fed induction generator systems for wind turbines," IEEE Ind. Appl.Mag., vol. 8, no. 3, pp. 26-33, May/Jun. 2002. (Pubitemid 34630524)
18. F. Barati, H. Oraee, E. Abdi, S. Shao, and R. McMahon, "The brushless doubly-fed machine vector model in the rotor flux oriented reference frame," in Proc. 34th Annu. IEEE IECON, 2008, pp. 1415-1420.
19. M. Boger and A.Wallace, "Performance capability analysis of the brushless doubly-fed machine as a wind generator," in Proc. 7th Int. Conf. Elect. Mach. Drives (Conf. Publ. No. 412), 1995, pp. 458-461.
20. L. Xu, B. Guan, H. Liu, L. Gao, and K. Tsai, "Design and control of a high-efficiency Doubly-Fed Brushless machine for wind power generator application," in Proc. IEEE ECCE, 2010, pp. 2409-2416.
21. S. Tohidi, H. Oraee, M. R. Zolghadri, S. Shao, and P. Tavner, "Analysis and enhancement of low-voltage ride-through capability of brushless doubly fed induction generator," IEEE Trans. Ind. Electron., vol. 60, no. 3, pp. 1146-1155, Mar. 2013.
22. M. Ruviaro, F. Runcos, N. Sadowski, and I. M. Borges, "Analysis and test results of a brushless doubly fed induction machine with rotary transformer," IEEE Trans. Ind. Electron., vol. 59, no. 6, pp. 2670-2677, Jun. 2012.
23. H. T. Jadhav and R. Roy, "A critical review on the grid integration issues of DFIG based wind farms," in Proc. 10th Int. Conf. Environ. Elect. Eng., 2011, pp. 1-4.
24. M. Tazil, V. Kumar, R. C. Bansal, S. Kong, Z. Y. Dong, and W. Freitas, "Three-phase doubly fed induction generators: An overview," IET Elect. Power Appl., vol. 4, no. 2, pp. 75-89, Feb. 2010.
25. M. S. Marhaba, S. Farhangi, and M. A. Paymani, "Comparison of power fluctuation between OptiSlip and DFIG controlled wind turbines," in Proc. 3rd PEDSTC, 2012, pp. 290-295.
26. L. Lin, F. Sun, Y. Yang, and Q. Li, "Comparison of reactive power compensation strategy of wind farm based on OptiSlip wind turbines," in Proc. Int. Conf. SUPERGEN Supply, 2009, pp. 1-6.
27. M. R. Khadraoui and M. Elleuch, "Comparison between OptiSlip and fixed speed wind energy conversion systems," in Proc. 5th Int. Multi- Conf. SSD, 2008, pp. 1-6.
28. V. Inc., Vestas V90-1.8MW and V90-2.0MW, product brochure. [Online]. Available: http://www.vestas.com/en/media/brochures.aspx
29. G. Abad, M. A. Rodriguez, G. Iwanski, and J. Poza, "Direct power control of doubly-fed-induction-generator-based wind turbines under unbalanced grid voltage," IEEE Trans. Power Electron., vol. 25, no. 2, pp. 442-452, Feb. 2010.
30. H. Akagi and H. Sato, "Control and performance of a doubly-fed induction machine intended for a flywheel energy storage system," IEEE Trans. Power Electron., vol. 17, no. 1, pp. 109-116, Jan. 2002. (Pubitemid 34307398)
31. J. Arbi, M. J.-B. Ghorbal, I. Slama-Belkhodja, and L. Charaabi, "Direct virtual torque control for doubly fed induction generator grid connection," IEEE Trans. Ind. Electron., vol. 56, no. 10, pp. 4163-4173, Oct. 2009.
32. I. Cadirci and M. Ermis, "Double-output induction generator operating at subsynchronous and supersynchronous speeds: Steady-state performance optimisation and wind-energy recovery," Proc. Inst. Elect. Eng.-Elect. Power Appl., vol. 139, no. 5, pp. 429-442, Sep. 1992. (Pubitemid 23598170)
33. V. Flores Mendes, C. V. de Sousa, S. R. Silva, J. Rabelo, and W. Hofmann, "Modeling and ride-through control of doubly fed induction generators during symmetrical voltage sags," IEEE Trans. Energy Convers., vol. 26, no. 4, pp. 1161-1171, Dec. 2011.
34. P. G. Holmes and N. A. Elsonbaty, "Cycloconvertor-excited dividedwinding doubly-fed machine as a wind-power convertor," Proc. Inst. Elect. Eng.-Elect. Power Appl., vol. 131, no. 2, pp. 61-69, Mar. 1984. (Pubitemid 14525947)
35. J. Hu, H. Nian, B. Hu, Y. He, and Z. Q. Zhu, "Direct active and reactive power regulation of DFIG using sliding-mode control approach," IEEE Trans. Energy Convers., vol. 25, no. 4, pp. 1028-1039, Dec. 2010.
36. J. Hu, J. Zhu, Q. Ma, and Y. Zhang, "Predictive direct virtual torque control of doubly fed induction generator for grid synchronization," in Proc. ICEMS, 2011, pp. 1-6.
37. S. Li, T. A. Haskew, K. A. Williams, and R. P. Swatloski, "Control of DFIG wind turbine with direct-current vector control configuration," IEEE Trans. Sustain. Energy, vol. 3, no. 1, pp. 1-11, Jan. 2012.
38. Z. Liu, O. A. Mohammed, and S. Liu, "A novel direct torque control of doubly-fed induction generator used for variable speed wind power generation," in Proc. IEEE Power Eng. Soc.Gen.Meeting, 2007, pp. 1-6.
39. B. B. Pimple, V. Y. Vekhande, and B. G. Fernandes, "A new direct torque control of doubly-fed induction generator under unbalanced grid voltage," in Proc. 6th Annu. IEEE APEC Expo., 2011, pp. 1576-1581.
40. L. Qizhong, Y. Lan, and W. Guoxiang, "Comparison of control strategy for Double-Fed Induction Generator (DFIG)," in Proc. 3rd ICMTMA, 2011, vol. 1, pp. 741-744.
41. B. C. Rabelo, W. Hofmann, J. L. da Silva, R. G. de Oliveira, and S. R. Silva, "Reactive power control design in doubly fed induction generators for wind turbines," IEEE Trans. Ind. Electron., vol. 56, no. 10, pp. 4154-4162, Oct. 2009.
42. D. Santos-Martin, J. L. Rodriguez-Amenedo, and S. Arnalte, "Direct power control applied to doubly fed induction generator under unbalanced grid voltage conditions," IEEE Trans. Power Electron., vol. 23, no. 5, pp. 2328-2336, Sep. 2008.
43. G. A. Smith, "Static Scherbius system of induction-motor speed control," Proc. Inst. Elect. Eng., vol. 124, no. 6, pp. 557-560, Jun. 1977. (Pubitemid 8553652)
44. G. A. Smith and K. A. Nigim, "Wind-energy recovery by a static Scherbius induction generator," Proc. Inst. Elect. Eng.-Gen., Transmiss. Distrib., vol. 128, no. 6, pp. 317-324, Nov. 1981. (Pubitemid 12506016)
45. E. Tremblay, S. Atayde, and A. Chandra, "Comparative study of control strategies for the doubly fed induction generator in wind energy conversion systems: A DSP-based implementation approach," IEEE Trans. Sustain. Energy, vol. 2, no. 3, pp. 288-299, Jul. 2011.
46. M. Y. Uctug, I. Eskandarzadeh, and H. Ince, "Modelling and output power optimisation of a wind turbine driven double output induction generator," Proc. Inst. Elect. Eng.-Elect. Power Appl., vol. 141, no. 2, pp. 33-38, Mar. 1994.
47. K. C.Wong, S. L. Ho, and K.W. E. Cheng, "Direct control algorithm for doubly fed induction generators in weak grids," IET Elect. Power Appl., vol. 3, no. 4, pp. 371-380, Jul. 2009.
48. G. Xiao-Ming, S. Dan, H. Ben-Teng, and H. Ling-Ling, "Direct power control for wind-turbine driven doubly-fed induction generator with constant switch frequency," in Proc. ICEMS, 2007, pp. 253-258.
49. L. Xu and P. Cartwright, "Direct active and reactive power control of DFIG for wind energy generation," IEEE Trans. Energy Convers., vol. 21, no. 3, pp. 750-758, Sep. 2006. (Pubitemid 46445164)
50. M. Yamamoto and O. Motoyoshi, "Active and reactive power control for doubly-fed wound rotor induction generator," IEEE Trans. Power Electron., vol. 6, no. 4, pp. 624-629, Oct. 1991. (Pubitemid 21716209)
51. D. Zhi and L. Xu, "Direct power control of DFIG with constant switching frequency and improved transient performance," IEEE Trans. Energy Convers., vol. 22, no. 1, pp. 110-118, Mar. 2007. (Pubitemid 46487483)
52. C. Kramer, "Neue methode zur regelung von asynchronen motoren," Elektrotech.Z., vol. 29, p. 734, 1908.
53. A. Lavi and R. J. Polge, "Induction motor speed control with static inverter in the rotor," IEEE Trans. Power App. Syst., vol. PAS-85, no. 1, pp. 76-84, Jan. 1966.
54. M. Machmoum, M. Cherkaoui, R. le Doeuff, and F. M. Sargos, "Steady state analysis and experimental investigation of a doubly-fed induction machine supplied by a 'current-source' cycloconverter in the rotor," in Proc. 4th Int. Conf. Power Electron. Variable-Speed Drives, 1990, pp. 81-86. (Pubitemid 20728043)
55. A. Tapia, G. Tapia, J. X. Ostolaza, and J. R. Saenz, "Modeling and control of a wind turbine driven doubly fed induction generator," IEEE Trans. Energy Convers., vol. 18, no. 2, pp. 194-204, Jun. 2003.
56. R. Cardenas, R. Pena, G. Tobar, J. Clare, P. Wheeler, and G. Asher, "Stability analysis of a wind energy conversion system based on a doubly fed induction generator fed by a matrix converter," IEEE Trans. Ind. Electron., vol. 56, no. 10, pp. 4194-4206, Oct. 2009.
57. R. Pena, R. Cardenas, E. Reyes, J. Clare, and P. Wheeler, "A topology for multiple generation system with doubly fed induction machines and indirect matrix converter," IEEE Trans. Ind. Electron., vol. 56, no. 10, pp. 4181-4193, Oct. 2009.
58. J. A. Santisteban and R. M. Stephan, "Vector control methods for induction machines: An overview," IEEE Trans. Educ., vol. 44, no. 2, pp. 170- 175, May 2001. (Pubitemid 32609836)
59. G. Escobar, M. F. Martinez-Montejano, A. A. Valdez, P. R. Martinez, and M. Hernandez-Gomez, "Fixed-reference-frame phase-locked loop for grid synchronization under unbalanced operation," IEEE Trans. Ind. Electron., vol. 58, no. 5, pp. 1943-1951, May 2011.
60. R. Pena, R. Cardenas, J. Proboste, J. Clare, and G. Asher, "Wind-diesel generation using doubly fed induction machines," IEEE Trans. Energy Convers., vol. 23, no. 1, pp. 202-214, Mar. 2008. (Pubitemid 351392315)
61. R. Peña, R. Cardenas, J. Proboste, G. Asher, and J. Clare, "Sensorless control of doubly-fed induction generators using a rotor-current-based MRAS observer," IEEE Trans. Ind. Electron., vol. 55, no. 1, pp. 330- 339, Jan. 2008.
62. B. Rabelo and W. Hofmann, "Power flow optimisation and grid integration of wind turbines with the doubly-fed induction generator," in Proc. IEEE Power Electron. Spec. Conf., 2005, pp. 2930-2936. (Pubitemid 46379595)
63. B. Andresen and J. Birk, "A high power density converter system for the Gamesa G10x 4, 5 MW wind turbine keywords," in Proc. Eur. Conf. Power Electron. Appl., 2007, pp. 1-8.
64. T. Zhang and A. Zain, "Modular converter system reliability & performance analysis in design," in Proc. 2nd IEEE Int. Symp. Power Electron. Distrib. Gen. Syst., Jun. 2010, pp. 252-258.
65. J. Llorente, A. Bjorn, and J. Birk, "Method for operation of a converter system," Gamesa Patent 754 505 2B2, May 14, 2008.
66. N. R. N. Idris, C. L. Toh, and M. E. Elbuluk, "A new torque and flux controller for direct torque control of induction machines," IEEE Trans. Ind. Appl., vol. 42, no. 6, pp. 1358-1366, Nov./Dec. 2006. (Pubitemid 44824035)
67. F. Bonnet, P.-E. Vidal, and M. Pietrzak-David, "Dual direct torque control of doubly fed induction machine," IEEE Trans. Ind. Electron., vol. 54, no. 5, pp. 2482-2490, Oct. 2007.
68. G. Abad, M. A. Rodriguez, J. Poza, and J. M. Canales, "Direct torque control for doubly fed induction machine-based wind turbines under voltage dips and without crowbar protection," IEEE Trans. Energy Convers., vol. 25, no. 2, pp. 586-588, Jun. 2010.
69. G. Abad, M. A. Rodriguez, and J. Poza, "Two-level VSC based predictive direct torque control of the doubly fed induction machine with reduced torque and flux ripples at low constant switching frequency," IEEE Trans. Power Electron., vol. 23, no. 3, pp. 1050-1061, May 2008. (Pubitemid 351756682)
70. ABB, ABB low voltage wind turbine converters ACS800-67, 0.6 to 2.2 MW, Zurich, Switzerland, 2012. [Online]. Available: http://www05.abb.com/global/ scot/scot201.nsf/veritydisplay/d971c93658b48422c1257799002541f5/$file/ acs800-67-wind%20turbine%20converter-flyer-3aua0000086088-en-rev%20a.pdf
71. T. Noguchi, H. Tomiki, S. Kondo, and I. Takahashi, "Direct power control of PWM converter without power-source voltage sensors," IEEE Trans. Ind. Appl., vol. 34, no. 3, pp. 473-479, May/Jun. 1998. (Pubitemid 128740176)
72. G. Escobar, A. M. Stankovic, J. M. Carrasco, E. Galvan, and R. Ortega, "Analysis and design of Direct Power Control (DPC) for a three phase synchronous rectifier via output regulation subspaces," IEEE Trans. Power Electron., vol. 18, no. 3, pp. 823-830, May 2003.
73. M. Malinowski, M. P. Kazmierkowski, S. Hansen, F. Blaabjerg, and G. D. Marques, "Virtual-flux-based direct power control of three-phase PWM rectifiers," IEEE Trans. Ind. Appl., vol. 37, no. 4, pp. 1019-1027, Jul./Aug. 2001. (Pubitemid 32829686)
74. R. Datta and V. T. Ranganathan, "Direct power control of grid-connected wound rotor induction machine without rotor position sensors," IEEE Trans. Power Electron., vol. 16, no. 3, pp. 390-399, May 2001. (Pubitemid 32534596)
75. R. Cardenas, R. Pena, M. Perez, J. Clare, G. Asher, and P. Wheeler, "Control of a switched reluctance generator for variable-speed wind energy applications," IEEE Trans. Energy Convers., vol. 20, no. 4, pp. 781- 791, Dec. 2005. (Pubitemid 41830054)
76. E. Echenique, J. Dixon, R. Cardenas, and R. Pena, "Sensorless control for a switched reluctance wind generator, based on current slopes and neural networks," IEEE Trans. Ind. Electron., vol. 56, no. 3, pp. 817- 825, Mar. 2009.
77. M. A. Abdullah, A. H. M. Yatim, C. W. Tan, and R. Saidur, "A review of maximum power point tracking algorithms for wind energy systems," Renew. Sustain. Energy Rev., vol. 16, no. 5, pp. 3220-3227, Jun. 2012.
78. R. Cardenas and R. Pena, "Sensorless vector control of induction machines for variable-speed wind energy applications," IEEE Trans. Energy Convers., vol. 19, no. 1, pp. 196-205, Mar. 2004.
79. C. Evangelista, P. Puleston, F. Valenciaga, and L. M. Fridman, "Lyapunov-designed super-twisting sliding mode control for wind energy conversion optimization," IEEE Trans. Ind. Electron., vol. 60, no. 2, pp. 538-545, Feb. 2013.
80. Y. Xia, K. H. Ahmed, and B. W. Williams, "Wind turbine power coefficient analysis of a new maximum power point tracking technique," IEEE Trans. Ind. Electron., vol. 60, no. 3, pp. 1122-1132, Mar. 2013.
81. F. Yao, Z. Y. Dong, K. Meng, Z. Xu, H. H. Iu, and K. P. Wong, "Quantum-inspired particle swarm optimization for power system operations considering wind power uncertainty and carbon tax in Australia," IEEE Trans. Ind. Informat., vol. 8, no. 4, pp. 880-888, Nov. 2012.
82. A. Mirecki, X. Roboam, and F. Richardeau, "Comparative study of maximum power strategy in wind turbines," in Proc. IEEE Int. Symp. Ind. Electron., 2004, pp. 993-998.
83. L. G. González, E. Figueres, G. Garcerá, and O. Carranza, "Dynamic response analysis of small wind energy conversion systems (WECS) operating with torque control versus speed control," in Proc. ICREPQ, 2009, pp. 1-5.
84. G. Tapia and A. Tapia, "Wind generation optimisation algorithm for a doubly fed induction generator," Proc. Inst. Elect. Eng.-Gen. Transmiss. Distrib., vol. 152, no. 2, pp. 253-263, Mar. 2005. (Pubitemid 40497034)
85. H. Camblong, I. M. de Alegria, M. Rodriguez, and G. Abad, "Experimental evaluation of wind turbines maximum power point tracking controllers," Energy Convers. Manage., vol. 47, no. 18/19, pp. 2846- 2858, Nov. 2006. (Pubitemid 44069605)
86. M. A. Abdullah, A. H. M. Yatim, and C. Wei, "A study of maximum power point tracking algorithms for wind energy system," in Proc. IEEE Conf. CET, 2011, pp. 321-326.
87. C. Patsios, A. Chaniotis, M. Rotas, and A. G. Kladas, "A comparison of maximum-power-point tracking control techniques for low-power variable-speed wind generators," in Proc. ELECTROMOTION, Jul. 1-3, 2009, pp. 1-6.
88. T. Brekken, N. Mohan, and T. Undeland, "Control of a doubly-fed induction wind generator under unbalanced grid voltage conditions," in Proc. Eur. Conf. Power Electron. Appl., 2005, p. 10.
89. T. K. A. Brekken and N. Mohan, "Control of a doubly fed induction wind generator under unbalanced grid voltage conditions," IEEE Trans. Energy Convers., vol. 22, no. 1, pp. 129-135, Mar. 2007. (Pubitemid 46487485)
90. M. I. Martinez, G. Tapia, A. Susperregui, and H. Camblong, "DFIG power generation capability and feasibility regions under unbalanced grid voltage conditions," IEEE Trans. Energy Convers., vol. 26, no. 4, pp. 1051-1062, Dec. 2011.
91. R. Peña, R. Cárdenas, E. Escobar, J. Clare, and P. Wheeler, "Control system for unbalanced operation of stand-alone doubly fed induction generators," IEEE Trans. Energy Convers., vol. 22, no. 2, pp. 544-545, Jun. 2007. (Pubitemid 46845657)
92. R. Pena, R. Cardenas, and E. Escobar, "Control strategy for a doublyfed induction generator feeding an unbalanced grid or stand-alone load," Elect. Power Syst. Res., vol. 79, no. 2, pp. 355-364, Feb. 2009.
93. V.-T. Phan and H.-H. Lee, "Improved predictive current control for unbalanced stand-alone doubly-fed induction generator-based wind power systems," IET Elect. Power Appl., vol. 5, no. 3, pp. 275-287, Mar. 2011.
94. G. Iwanski and W. Koczara, "Sensorless direct voltage control of the stand-alone slip-ring induction generator," IEEE Trans. Ind. Electron., vol. 54, no. 2, pp. 1237-1239, Apr. 2007. (Pubitemid 46591045)
95. V.-T. Phan and H.-H. Lee, "Performance enhancement of stand-alone DFIG systems with control of rotor and load side converters using resonant controllers," IEEE Trans. Ind. Appl., vol. 48, no. 1, pp. 199-210, Jan./Feb. 2012.
96. G. H. Ghorashi, S. Murthy, B. P. Singh, and B. Singh, "Analysis of wind driven grid connected induction generators under unbalanced grid conditions," IEEE Trans. Energy Convers., vol. 9, no. 2, pp. 217-223, Jun. 1994.
97. E. Muljadi, T. Batan, D. Yildirim, and C. P. Butterfield, "Understanding the unbalancedvoltage problem in wind turbine generation," in Conf. Rec. IEEE IAS Annu. Meeting, Phoenix, AZ, USA, 1999, pp. 1359-1365. (Pubitemid 30544141)
98. Y. Zhou, P. Bauer, J. A. Ferreira, and J. Pierik, "Operation of gridconnected DFIG under unbalanced grid voltage condition," IEEE Trans. Energy Convers., vol. 24, no. 1, pp. 240-246, Mar. 2009.
99. L. Xu and Y. Wang, "Dynamic modeling and control of DFIG-based wind turbines under unbalanced network conditions," IEEE Trans. Power Syst., vol. 22, no. 1, pp. 314-323, Feb. 2007. (Pubitemid 46437741)
100. T. Brekken and N. Mohan, "A novel doubly-fed induction wind generator control scheme for reactive power control and torque pulsation compensation under unbalanced grid voltage conditions," in Proc. 34th IEEE Annu. Power Electron. Spec. Conf., Acapulco, Mexico, 2003, pp. 15-19.
101. Y.Wang, L. Xu, and B.W.Williams, "Compensation of network voltage unbalance using doubly fed induction generator-based wind farms," IET Renew. Power Gen., vol. 3, no. 1, pp. 12-22, Mar. 2009.
102. J. Hu, Y. He, L. Xu, and B. W. Williams, "Improved control of DFIG systems during network unbalance using PI-R current regulators," IEEE Trans. Ind. Electron., vol. 56, no. 2, pp. 439-451, Feb. 2009.
103. J. Hu and Y. He, "Reinforced control and operation of DFIG-based windpower- generation system under unbalanced grid voltage conditions," IEEE Trans. Energy Convers., vol. 24, no. 4, pp. 905-915, Dec. 2009.
104. V.-T. Phan, S.-H. Kwak, and H.-H. Lee, "An improved control method for DFIG-based wind system supplying unbalanced stand-alone loads," in Proc. IEEE ISIE, 2009, pp. 1081-1086.
105. V.-T. Phan and H.-H. Lee, "Control of an unbalanced stand-alone DFIGbased wind system using predictive current control method," in Proc. IEEE ECCE, 2010, pp. 2521-2528.
106. J. P. da Costa, H. Pinheiro, T. Degner, and G. Arnold, "Robust controller for DFIGs of grid-connected wind turbines," IEEE Trans. Ind. Electron., vol. 58, no. 9, pp. 4023-4038, Sep. 2011.
107. B. Singh and S. Sharma, "Design and implementation of four-leg voltage-source-converter-based VFC for autonomous wind energy conversion system," IEEE Trans. Ind. Electron., vol. 59, no. 12, pp. 4694- 4703, Dec. 2012.
108. R. Cardenas, C. Juri, R. Pena, J. Clare, and P. Wheeler, "Analysis and experimental validation of control systems for four-leg matrix converter applications," IEEE Trans. Ind. Electron., vol. 59, no. 1, pp. 141-153, Jan. 2012.
109. R. Cardenas, R. Pena, P. Wheeler, and J. Clare, "Experimental validation of a space vector modulation algorithm for four-leg matrix converters," IEEE Trans. Ind. Electron., vol. 58, no. 4, pp. 1282-1293, Apr. 2011.
110. H. Xu, J. Hu, and Y. He, "Operation of wind-turbine-driven DFIG systems under distorted grid voltage conditions: Analysis and experimental validations," IEEE Trans. Power Electron., vol. 27, no. 5, pp. 2354-2366, May 2012.
111. Y. Wang and L. Xu, "Coordinated control of DFIG and FSIG-based wind farms under unbalanced grid conditions," IEEE Trans. Power Del., vol. 25, no. 1, pp. 367-377, Jan. 2010.
112. P. Zhou, Y. He, and D. Sun, "Improved direct power control of a DFIGbased wind turbine during network unbalance," IEEE Trans. Power Electron., vol. 24, no. 11, pp. 2465-2474, Nov. 2009.
113. R. Pena, R. Cardenas, G. M. Asher, J. C. Clare, J. Rodriguez, and P. Cortes, "Vector control of a diesel-driven doubly fed induction machine for a stand-alone variable speed energy system," in Proc. 28th Annu. IEEE IECON, 2002, vol. 2, pp. 985-990.
114. R. Pena, R. Cardenas, J. Clare, and G. Asher, "Control strategy of doubly fed induction generators for a wind diesel energy system," in Proc. 28th Annu. IEEE IECON, 2002, vol. 4, pp. 3297-3302.
115. R. Cardenas, R. Pena, J. Proboste, G. Asher, and J. Clare, "MRAS observer for sensorless control of standalone doubly fed induction generators," IEEE Trans. Energy Convers., vol. 20, no. 4, pp. 710-718, Dec. 2005. (Pubitemid 41830046)
116. A. Griffo, D. Drury, T. Sawata, and P. H. Mellor, "Sensorless starting of a wound-field synchronous starter/generator for aerospace applications," IEEE Trans. Ind. Electron., vol. 59, no. 9, pp. 3579-3587, Sep. 2012.
117. M. Abolhassani, P. Niazi, H. Tolivat, and P. Enjeti, "A sensorless Integrated Doubly-Fed Electric Alternator/Active filter (IDEA) for variable speed wind energy system," in Conf. Rec. 38th IEEE IAS Annu. Meeting, 2003, pp. 507-514.
118. R. Datta and V. T. Ranganathan, "A simple position-sensorless algorithm for rotor-side field-oriented control of wound-rotor induction machine," IEEE Trans. Ind. Electron., vol. 48, no. 4, pp. 786-793, Aug. 2001. (Pubitemid 32780047)
119. L. Morel, H. Godfroid, A. Mirzaian, and J. M. Kauffmann, "Doublefed induction machine: Converter optimisation and field oriented control without position sensor," Proc. Inst. Elect. Eng.-Elect. Power Appl., vol. 145, no. 4, pp. 360-368, Jul. 1998. (Pubitemid 128728086)
120. E. Bogalecka and Z. Krzeminski, "Sensorless control of a double-fed machine for wind power generators," in Proc. EPE-PMC, Dubrovnik and Cavtat, Croatia, 2002, [CD-ROM].
121. B. Hopfensperger, D. J. Atkinson, and R. A. Lakin, "Stator-flux- oriented control of a doubly-fed induction machine with and without position encoder," Proc. Inst. Elect. Eng.-Elect. Power Appl., vol. 147, no. 4, pp. 241-250, Jul. 2000.
122. O. A. Mohammed, Z. Liu, and S. Liu, "A novel sensorless control strategy of doubly fed induction motor and its examination with the physical modeling of machines," IEEE Trans. Magn., vol. 41, no. 5, pp. 1852- 1855, May 2005. (Pubitemid 40963601)
123. L. Xu and W. Cheng, "Torque and reactive power control of a doubly fed induction machine by position sensorless scheme," IEEE Trans. Ind. Appl., vol. 31, no. 3, pp. 636-642, May/Jun. 1995.
124. C. Schauder, "Adaptive speed identification for vector control of induction motors without rotational transducers," IEEE Trans. Ind. Appl., vol. 28, no. 5, pp. 1054-1061, Sep./Oct. 1992. (Pubitemid 23555887)
125. R. Ghosn, C. Asmar, M. Pietrzak-David, and B. De Fornel, "A MRASsensorless speed control of doubly fed induction machine," in Proc. Int. Conf. Elect. Mach., 2002, pp. 26-28.
126. R. Ghosn, C. Asmar, M. Pietrzak-David, and B. De Fornel, "A MRAS Luenberger sensorless speed control of doubly fed induction machine," in Proc. Eur. Power Electron. Conf., 2003, [CD-ROM].
127. R. Cardenas, R. Pena, G. Asher, J. Clare, and J. Cartes, "MRAS observer for doubly fed induction machines," IEEE Trans. Energy Convers., vol. 19, no. 2, pp. 467-468, Jun. 2004.
128. R. Cardenas, R. Pena, J. Proboste, G. Asher, and J. Clare, "Rotor current based MRAS observer for doubly-fed induction machines," Electron. Lett., vol. 40, no. 12, pp. 769-770, Jun. 2004.
129. M. Pattnaik and D. Kastha, "Comparison of MRAS based speed estimation methods for a stand-alone doubly fed induction generator," in Proc. ICEAS, 2011, pp. 1-6.
130. Y. Guofeng, L. Yongdong, C. Jianyun, and J. Xinjian, "A novel position sensor-less control scheme of Doubly Fed Induction Wind Generator based on MRAS method," in Proc. IEEE PESC, 2008, pp. 2723-2727.
131. M. S. Carmeli, M. Iacchetti, and R. Perini, "A MRAS observer applied to sensorless doubly fed induction machine drives," in Proc. IEEE ISIE, 2010, vol. 1, pp. 3077-3082.
132. D. G. Forchetti, G. O. García, S. Member, and M. I. Valla, "Adaptive observer for sensorless control of stand-alone doubly fed induction generator," IEEE Trans. Ind. Electron., vol. 56, no. 10, pp. 4174-4180, Oct. 2009.
133. R. Cardenas, R. Pena, J. Clare, G. Asher, and J. Proboste, "MRAS observers for sensorless control of doubly-fed induction generators," IEEE Trans. Power Electron., vol. 23, no. 3, pp. 1075-1084, May 2008. (Pubitemid 351756684)
134. R. Cardenas, R. Pena, J. Proboste, G. Asher, J. Clare, and P. Wheeler, "MRAS observers for sensorless control of doubly-fed induction generators," in Proc. 4th IET Conf. PEMD, 2008, pp. 568-572.
135. F. Castelli-Dezza, G. Foglia, M. F. Iacchetti, and R. Perini, "An MRAS observer for sensorless DFIM drives with direct estimation of the torque and flux rotor current components," IEEE Trans. Power Electron., vol. 27, no. 5, pp. 2576-2584, May 2012.
136. R. Pena, R. Cardenas, J. Proboste, G. Asher, and J. Clare, "Sensorless control of a slip ring induction generator based on rotor current MRAS observer," in Proc. 36th IEEE PESC, 2005, pp. 2508-2513. (Pubitemid 46379530)
137. D. Forchetti, G. O. Garcia, and M. I. Valla, "Sensorless control of standalone doubly fed induction generator with an adaptive observer," in Proc. IEEE ISIE, 2008, pp. 2444-2449.
138. K. Ohyama, G. Asher, and M. Sumner, "Comparative analysis of experimental performance and stability of sensorless induction motor drives," IEEE Trans. Ind. Electron., vol. 53, no. 1, pp. 178-186, Feb. 2005.
139. M. F. Iacchetti, "Adaptive tuning of the stator inductance in a rotorcurrent- based MRAS observer for sensorless doubly fed inductionmachine drives," IEEE Trans. Ind. Electron., vol. 58, no. 10, pp. 4683- 4692, Oct. 2011.
140. M. S. Carmeli, F. Castelli-dezza, M. Iacchetti, and R. Perini, "Effects of mismatched parameters in MRAS sensorless doubly fed induction machine drives," IEEE Trans. Power Electron., vol. 25, no. 11, pp. 2842- 2851, Nov. 2010.
141. B. Mwinyiwiwa, Y. Zhang, B. Shen, and B.-T. Ooi, "Rotor position phase-locked loop for decoupled P-Q control of DFIG for wind power generation," IEEE Trans. Energy Convers., vol. 24, no. 3, pp. 758-765, Sep. 2009.
142. B. Shen, B. Mwinyiwiwa, Y. Zhang, and B.-T. Ooi, "Sensorless maximum power point tracking of wind by DFIG using rotor Position Phase Lock Loop (PLL)," IEEE Trans. Power Electron., vol. 24, no. 4, pp. 942- 951, Apr. 2009.
143. K. Gogas, G. Joos, B. T. Ooi, Y. Z. Zhang, and B. Mwinyiwiwa, "Design of a robust speed and position sensorless decoupled P-Q controlled doubly-fed induction generator for variable-speed wind energy applications," in Proc. IEEE Canada EPC, 2007, pp. 62-67.
144. G. D. Marques and D. M. Sousa, "Air-gap-power-vector-based sensorless method for DFIG control without flux estimator," IEEE Trans. Ind. Electron., vol. 58, no. 10, pp. 4717-4726, Oct. 2011.
145. G. D. Marques and D. M. Sousa, "A DFIG sensorless method for direct estimation of slip position," in Proc. IEEE Region 8 Int. Conf. Comput. Technol. Elect. Electron. Eng. (SIBIRCON), 2010, pp. 818-823.
146. G. D. Marques, V. F. Pires, S. Sousa, and D. M. Sousa, "A DFIG sensorless rotor-position detector based on a hysteresis controller," IEEE Trans. Energy Convers., vol. 26, no. 1, pp. 9-17, Mar. 2011.
147. G. D. Marques, V. F. Pires, S. Sousa, and D. M. Sousa, "Evaluation of a DFIG rotor position-sensorless detector based on a hysteresis controller," in Proc. Int. Conf. POWERENG Energy Elect. Drives, 2009, pp. 113-116.
148. S. Georges, G. Ragi, P.-D. Maria, and D. F. Bernard, "A comparison of sensorless speed estimation for a doubly fed induction machine," in Proc. Eur. Conf. Power Electron. Appl., 2005, p. 9.
149. J. Holtz, "Sensorless control of induction machines; With or without signal injection?" IEEE Trans. Ind. Electron., vol. 53, no. 1, pp. 7-30, Feb. 2005.
150. C. Luo, H. G. Far, H. Banakar, P. Keung, B. Ooi, and L. Fellow, "Estimation of wind penetration as limited by frequency deviation," IEEE Trans. Energy Convers., vol. 22, no. 3, pp. 783-791, Sep. 2007. (Pubitemid 47323594)
151. H. Banakar, C. Luo, B. T. Ooi, L. Fellow, A. A. G. C. Feedback, and L. Time, "Impacts of wind power minute-to-minute variations on power system operation," IEEE Trans. Power Syst., vol. 23, no. 1, pp. 150-160, Feb. 2008. (Pubitemid 351292099)
152. C. Luo, S. Member, B. Ooi, and L. Fellow, "Frequency deviation of thermal power plants due to wind farms," IEEE Trans. Energy Convers., vol. 21, no. 3, pp. 708-716, Sep. 2006. (Pubitemid 46445159)
153. Z.-S. Zhang, Y.-Z. Sun, J. Lin, and G.-J. Li, "Coordinated frequency regulation by doubly fed induction generator-based wind power plants," IET Renew. Power Gen., vol. 6, no. 1, pp. 38-47, Jan. 2012.
154. X. Zhang, H. Li, and Y. Wang, "Control of DFIG-based wind farms for power network frequency support," in Proc. Int. Conf. POWERCON, 2010, pp. 1-6.
155. J. Morren, S. W. H. de Haan, W. L. Kling, and J. A. Ferreira, "Wind turbines emulating inertia and supporting primary frequency control," IEEE Trans. Power Syst., vol. 21, no. 1, pp. 433-434, Feb. 2006. (Pubitemid 43204745)
156. M. Tsili and S. Papathanassiou, "A review of grid code technical requirements for wind farms," IET Renew. Power Gen., vol. 3, no. 3, pp. 308- 332, Sep. 2009.
157. Grid Code: High and Extra High Voltage, E. ON Netz GmbH, Bayreuth, Germany, 2006.
158. A. Mullane and M. OMalley, "The inertial response of inductionmachine- based wind turbines," IEEE Trans. Power Syst., vol. 20, no. 3, pp. 1496-1503, Aug. 2005. (Pubitemid 41300963)
159. M. Fazeli, G. M. Asher, C. Klumpner, and L. Yao, "Novel integration of DFIG-based wind generators within microgrids," IEEE Trans. Energy Convers., vol. 26, no. 3, pp. 840-850, Sep. 2011.
160. I. A. Gowaid, A. El-Zawawi, and M. El-Gammal, "Improved inertia and frequency support from grid-connected DFIG wind farms," in Proc. IEEE/PES PSCE, 2011, pp. 1-9.
161. M. Kayikci and J. V. Milanovic, "Dynamic contribution of DFIG-based wind plants to system frequency disturbances," IEEE Trans. Power Syst., vol. 24, no. 2, pp. 859-867, May 2009.
162. B. Khaki, M. H. Asgari, R. Sirjani, and A. Mozdawar, "Contribution of DFIG wind turbines to system frequency control," in Proc. Int. Conf. SUPERGEN Supply, 2009, pp. 1-8.
163. X. Zhu, Y. Wang, L. Xu, X. Zhang, and H. Li, "Virtual inertia control of DFIG-based wind turbines for dynamic grid frequency support," in Proc. IET Conf. RPG, 2011, pp. 1-6.
164. F. M. Hughes, O. Anaya-lara, N. Jenkins, and G. Strbac, "Control of DFIG-based wind generation for power network support," IEEE Trans. Power Syst., vol. 20, no. 4, pp. 1958-1966, Nov. 2005. (Pubitemid 41700549)
165. D. Gautam, S. Member, L. Goel, R. Ayyanar, and S. Member, "Control strategy to mitigate the impact of reduced inertia due to doubly fed induction generators on large power systems," IEEE Trans. Power Syst., vol. 26, no. 1, pp. 214-224, Feb. 2011.
166. G. Ramtharan, J. B. Ekanayake, and N. Jenkins, "Frequency support from doubly fed induction generator wind turbines," IET Renew. Power Gen., vol. 1, no. 1, pp. 3-9, Mar. 2007. (Pubitemid 46610162)
167. L.-R. Chang-Chien, W.-T. Lin, and Y.-C. Yin, "Enhancing frequency response control by DFIGs in the high wind penetrated power systems," IEEE Trans. Power Syst., vol. 26, no. 2, pp. 710-718, May 2011.
168. I. D. Margaris, S. A. Papathanassiou, S. Member, N. D. Hatziargyriou, A. D. Hansen, and P. Srensen, "Frequency control in autonomous power systems with high wind power penetration," IEEE Trans. Sustain. Energy, vol. 3, no. 2, pp. 189-199, Apr. 2012.
169. L.-R. Chang-Chien and Y. Yin, "Strategies for operating wind power in a similar manner of conventional power plant," IEEE Trans. Energy Convers., vol. 24, no. 4, pp. 926-934, Dec. 2009.
170. S. El Itani and G. Joos, "Assessment of inertial potential of variablespeed wind turbines," in Proc. IEEE ECCE, 2011, pp. 851-856.
171. C. Luo, H. Banakar, B. Shen, and B. Ooi, "Strategies to smooth wind power fluctuations of wind turbine generator," IEEE Trans. Energy Convers., vol. 22, no. 2, pp. 341-349, Jun. 2007. (Pubitemid 46845632)
172. M. Fazeli, G. M. Asher, C. Klumpner, L. Yao, and M. Bazargan, "Novel integration of wind generator-energy storage systems within microgrids," IEEE Trans. Smart Grid, vol. 3, no. 2, pp. 728-737, Jun. 2012.
173. M. Fazeli, G. M. Asher, C. Klumpner, S. Bozhko, L. Yao, and M. Bazargan, "Wind turbine-energy storage control system for delivering constant demand power shared by DFIGs through droop characteristics," in Proc. 13th Eur. Conf. EPE Appl., 2009, pp. 1-10.
174. M. Shahabi, S. Member, M. R. Haghifam, S. Member, and M. Mohamadian, "Microgrid dynamic performance improvement using a doubly fed induction wind generator," IEEE Trans. Energy Convers., vol. 24, no. 1, pp. 137-145, Mar. 2009.
175. "Wind energy barometer 2011," Systemes Solaires - Le Journal de l'Éolien, vol. 10, no. 8, pp. 80-107, Feb. 2011.
176. Red Eléctrica, "The Spanish Electricity System. Summary 2008," last accessed Feb. 2013. [Online]. Available: http://www.ree.es/ ingles/sistema-electrico/informeSEE-2008.asp
177. Red Eléctrica, "The Spanish Electricity System. Summary 2009," last accessed Feb. 2013. [Online]. Available: http://www.ree.es/ ingles/sistema-electrico/informeSEE-2009.asp
178. Red Eléctrica, "The Spanish Electricity System. Summary 2010," last accessed Feb. 2013. [Online]. Available: http://www.ree.es/ ingles/sistema-electrico/informeSEE-2010.asp
179. Red Eléctrica, "Press release: Record share of wind energy in demand coverage," last accessed Feb. 2013. [Online]. Available: http://www.ree.es/ingles/sala-prensa/web/notas-detalle.aspx?id-nota=255
180. M. Altýn, O. Göksu, R. Teodorescu, P. Rodriguez, B.-B. Jensen, and L. Helle, "Overview of recent grid codes for wind power integration," in Proc. 12th Int. Conf. OPTIM Elect. Electron. Equip., 2010, pp. 1152-1160.
181. F. Blaabjerg, R. Teodorescu, M. Liserre, and A. V. Timbus, "Overview of control and grid synchronization for distributed power generation systems," IEEE Trans. Ind. Electron., vol. 53, no. 5, pp. 1398-1409, Oct. 2006. (Pubitemid 44593490)
182. J. Lopez, P. Sanchis, X. Roboam, and L. Marroyo, "Dynamic behavior of the doubly fed induction generator during three-phase voltage dips," IEEE Trans. Energy Convers., vol. 22, no. 3, pp. 709-717, Sep. 2007. (Pubitemid 47323587)
183. Red Eléctrica, "Procedimiento de operación P.O. 12.3: Requisitos de respuesta frente a huecos de tensión de las instalaciones de producción en régimen especial," 2006. Last accessed Feb. 2013. [Online]. Available: http://www.ree.es/operacion/pdf/po/PO-resol-12.3- Respuesta-huecos-eolica.pdf
184. Energinet, "Technical regulation 3.2.5 for wind power plants with a power output greater than 11 kW," 2010. Last accessed Feb. 2013. [Online]. Available: www.energynet.dk; http://www.energinet.dk/EN/El/Forskrifter/ Technical-regulations/Sider/Regulations-for-gridconnection.aspx
185. I. Erlich, W. Winter, and A. Dittrich, "Advanced grid requirements for the integration of wind turbines into the German transmission system," in Proc. IEEE Power Eng. Soc. Gen. Meeting, 2006, p. 7.
186. X. Dawei, R. Li, P. J. Tavner, and S. Yang, "Control of a doubly fed induction generator in a wind turbine during grid fault ridethrough," IEEE Trans. Energy Convers., vol. 21, no. 3, pp. 652-662, Sep. 2006. (Pubitemid 46445154)
187. M. Mohseni, S. M. Islam, and M. A. S. Masoum, "Impacts of symmetrical and asymmetrical voltage sags on DFIG-based wind turbines considering phase-angle jump, voltage recovery, and sag parameters," IEEE Trans. Power Electron., vol. 26, no. 5, pp. 1587-1598, May 2011.
188. S. Hu, X. Lin, Y. Kang, and X. Zou, "An improved low-voltage ridethrough control strategy of doubly fed induction generator during grid faults," IEEE Trans. Power Electron., vol. 26, no. 12, pp. 3653-3665, Dec. 2011.
189. M. Bollen, Understanding Power Quality Problems: Voltage Sags and Interruptions. Piscataway, NJ, USA: IEEE Press, 1999.
190. M. Bollen and I. Gu, Signal Processing of Power Quality Disturbances. Hoboken, NJ, USA: Wiley, 2006.
191. J. Lopez, E. Gubia, P. Sanchis, X. Roboam, and L. Marroyo, "Wind turbines based on doubly fed induction generator under asymmetrical voltage dips," IEEE Trans. Energy Convers., vol. 23, no. 1, pp. 321-330, Mar. 2008. (Pubitemid 351392328)
192. I. Erlich, H. Wrede, and C. Feltes, "Dynamic behavior of DFIGbased wind turbines during grid faults," in Proc. Power Convers. Conf. - Nagoya, 2007, pp. 1195-1200. (Pubitemid 47468659)
193. J. Morren and S. W. H. de Haan, "Short-circuit current of wind turbines with doubly fed induction generator," IEEE Trans. Energy Convers., vol. 22, no. 1, pp. 174-180, Mar. 2007. (Pubitemid 46487490)
194. A. H. Kasem, E. F. El-Saadany, H. H. El-Tamaly, and M. A. A. Wahab, "An improved fault ride-through strategy for doubly fed induction generator-based wind turbines," IET Renew. Power Gen., vol. 2, no. 4, pp. 201-214, Dec. 2008.
195. M. Kiani, "Effects of voltage unbalance and system harmonics on the performance of doubly fed induction wind generators," IEEE Trans. Ind. Appl., vol. 46, no. 2, pp. 562-568, Mar./Apr. 2010.
196. S. Alepuz, A. Calle-Prado, S. Busquets-Monge, S. Kouro, and B. Wu, "Use of stored energy in PMSG rotor inertia for low voltage ride-through in back-to-back NPC converter based wind power systems," IEEE Trans. Ind. Electron., vol. 60, no. 5, pp. 1787-1796, May 2013.
197. M. K. Das, S. Chowdhury, and S. P. Chowdhury, "Protection and voltage control of DFIG wind turbines during grid faults," in Proc. 10th IET Int. Conf. DPSP Manag. Change, 2010, pp. 24-24.
198. N. Jouko, "Voltage dip ride through of a double-fed generator equipped with an active crowbar," in Proc. Nordic Wind Power Conf., 2004, pp. 1409-1415.
199. A. Petersson, T. Thiringer, L. Harnefors, and T. Petru, "Modeling and experimental verification of grid interaction of a DFIG wind turbine," IEEE Trans. Energy Convers., vol. 20, no. 4, pp. 878-886, Dec. 2005. (Pubitemid 41830065)
200. Y. Jun, L. Hui, L. Yong, and C. Zhe, "An improved control strategy of limiting the DC-link voltage fluctuation for a doubly fed induction wind generator," IEEE Trans. Power Electron., vol. 23, no. 3, pp. 1205-1213, May 2008.
201. J. Hu and Y. He, "DFIG wind generation systems operating with limited converter rating considered under unbalanced network conditions - analysis and control design," Renew. Energy, vol. 36, no. 2, pp. 829-847, Feb. 2011.
202. B.Wu, Y. Lang, N. Zargari, and S. Kouro, Power Conversion and Control of Wind Energy Systems. Hoboken, NJ, USA: Wiley, 2011.
203. T. Kawady, C. Feltes, I. Erlich, and A. I. Taalab, "Protection system behavior of DFIG based wind farms for grid-faults with practical considerations," in Proc. IEEE PES Gen. Meeting, 2010, pp. 1-6.
204. L. G. Meegahapola, T. Littler, and D. Flynn, "Decoupled-DFIG fault ride-through strategy for enhanced stability performance during grid faults," IEEE Trans. Sustain. Energy, vol. 1, no. 3, pp. 152-132, Oct. 2010.
205. C. Feltes, S. Engelhardt, J. Kretschmann, J. Fortmann, F. Koch, and I. Erlich, "High voltage ride-through of DFIG-based wind turbines," in Proc. 21st IEEE Power Energy Soc. Gen. Meeting - Convers. Del. Elect. Energy, 2008, pp. 1-8.
206. K. E. Okedu, S. M. Muyeen, R. Takahashi, and J. Tamura, "Participation of facts in stabilizing DFIG with crowbar during grid fault based on grid codes," in Proc. IEEE GCC Conf. Exhib., 2011, pp. 365-368.
207. J. A. Suul, M. Molinas, and T. Undeland, "STATCOM-based indirect torque control of induction machines during voltage recovery after grid faults," IEEE Trans. Power Electron., vol. 25, no. 5, pp. 1240-1250, May 2010.
208. I. Martinez and D. Navarro, "Gamesa DAC converter: The way for REE grid code certification," in Proc. 13th EPE-PEMC, 2008, pp. 437-443.
209. W. Qiao, G. K. Venayagamoorthy, and R. G. Harley, "Real-time implementation of a STATCOM on a wind farm equipped with doubly fed induction generators," IEEE Trans. Ind. Appl., vol. 45, no. 1, pp. 98- 107, Jan./Feb. 2009.
210. W. Qiao, R. G. Harley, and G. K. Venayagamoorthy, "Coordinated reactive power control of a large wind farm and a STATCOM using heuristic dynamic programming," IEEE Trans. Energy Convers., vol. 24, no. 2, pp. 493-503, Jun. 2009.
211. C.Wessels, F. Gebhardt, and F.W. Fuchs, "Fault ride-through of a DFIG wind turbine using a dynamic voltage restorer during symmetrical and asymmetrical grid faults," IEEE Trans. Power Electron., vol. 26, no. 3, pp. 807-815, Mar. 2011.
212. A. Teninge, D. Roye, and S. Bacha, "Reactive power control for variable speed wind turbines to low voltage ride through grid code compliance," in Proc. XIX ICEM, 2010, pp. 1-6.
213. G. Joos, "Wind turbine generator low voltage ride through requirements and solutions," in Proc. 21st IEEE Power Energy Soc. Gen. Meeting-Convers. Del. Electrical, 2008, pp. 1-7.
214. G. Pannell, D. J. Atkinson, and B. Zahawi, "Minimum-threshold crowbar for a fault-ride-through grid-code-compliant DFIG wind turbine," IEEE Trans. Energy Convers., vol. 25, no. 3, pp. 750-759, Sep. 2010.
215. W. Guo, L. Xiao, and S. Dai, "Enhancing low-voltage ride-through capability and smoothing output power of DFIG with a superconducting fault-current limiter-magnetic energy storage system," IEEE Trans. Energy Convers., vol. 27, no. 2, pp. 277-295, Jun. 2012.
216. A. Dittrich and A. Stoev, "Comparison of fault ride-through strategies for wind turbines with DFIM generators," in Proc. Eur. Conf. Power Electron. Appl., 2005, p. 8.
217. S. Heier, Grid Integration of Wind Energy Conversion Systems. Hoboken, NJ, USA: Wiley, 2006.
218. O. Gomis-Bellmunt, A. Junyent-Ferré, A. Sumper, and J. Bergas-Jané, "Ride-through control of a doubly fed induction generator under unbalanced voltage sags," IEEE Trans. Energy Convers., vol. 23, no. 4, pp. 1036-1045, Dec. 2008.
219. L. Trilla, O. Gomis-Bellmunt, A. Junyent-Ferre, M. Mata, J. Sanchez Navarro, and A. Sudria-Andreu, "Modeling and validation of DFIG 3-MW wind turbine using field test data of balanced and unbalanced voltage sags," IEEE Trans. Sustain. Energy, vol. 2, no. 4, pp. 509-519, Oct. 2011.
220. S. Engelhardt, J. Kretschmann, J. Fortmann, F. Shewarega, I. Erlich, and C. Feltes, "Negative sequence control of DFG based wind turbines," in Proc. IEEE Power Energy Soc. Gen., 2011, pp. 1-8.
221. J. Lopez, P. Sanchis, E. Gubia, A. Ursua, L. Marroyo, and X. Roboam, "Control of doubly fed induction generator under symmetrical voltage dips," in Proc. IEEE ISIE, 2008, pp. 2456-2462.
222. J. Liang, W. Qiao, and R. G. Harley, "Feed-forward transient current control for low-voltage ride-through enhancement of DFIG wind turbines," IEEE Trans. Energy Convers., vol. 25, no. 3, pp. 836-843, Sep. 2010.
223. J. Lopez, E. Gubia, E. Olea, J. Ruiz, and L. Marroyo, "Ride through of wind turbines with doubly fed induction generator under symmetrical voltage dips," IEEE Trans. Ind. Electron., vol. 56, no. 10, pp. 4246-4254, Oct. 2009.
224. Y. Wang, L. Xu, and B. W. Williams, "Improved operation of DFIG and FSIG-based wind farms during network unbalance," in Proc. 21st IEEE Power Energy Soc. Gen. Meeting - Convers. Del. Elect., 2008, pp. 1-7.
225. J. Hu, H. Nian, H. Xu, and Y. He, "Dynamic modeling and improved control of DFIG under distorted grid voltage conditions," IEEE Trans. Energy Convers., vol. 26, no. 1, pp. 163-175, Mar. 2011.
226. M. Mohseni, S. Islam, and M. A. S. Masoum, "Fault ride-through capability enhancement of doubly-fed induction wind generators," IET Renew. Power Gen., vol. 5, no. 5, pp. 368-376, Sep. 2011.
227. M. Mohseni and S. Islam, "Transient control of DFIG-based wind power plants in compliance with the australian grid code," IEEE Trans. Power Electron., vol. 27, no. 6, pp. 2813-2824, Jun. 2011.
228. M. I. Martinez, G. Tapia, A. Susperregui, and H. Camblong, "Slidingmode control for DFIG rotor- and grid-side converters under unbalanced and harmonically distorted grid voltage," IEEE Trans. Energy Convers., vol. 27, no. 2, pp. 328-339, Jun. 2012.