Steady State Analysis of a Doubly Fed Induction Generator ()
Abstract
In this paper, we present the steady state analysis of a double-fed induction generator (DFIG) adopted for wind power generation. The three-phase induction machine connected to the network, to work as a generator for wind farms, is excited on the rotor circuit by a slip-frequency current injected to the rotor, from an exciter mounted on the same shaft of the machine. The resulting rotating magnetic field rotates at synchronous speed; as such the generated power has a constant frequency independent of the shaft speed. Effects of the excitation voltage magnitude and phase angle on the active and reactive power are studied, when the machine runs at constant speed. It has been shown that by controlling the excitation voltage magnitude and phase angle would control the mode of operation of the machine; motor mode or generator mode. Furthermore, the effects of the shaft speed on the active and reactive power at constant excitation voltage magnitude and constant phase angle are also investigated.
Share and Cite:
A. Alkandari, S. Soliman and M. Abdel-Rahman, "Steady State Analysis of a Doubly Fed Induction Generator,"
Energy and Power Engineering, Vol. 3 No. 4, 2011, pp. 393-400. doi:
10.4236/epe.2011.34050.
Conflicts of Interest
The authors declare no conflicts of interest.
References
|
[1]
|
L. Piegari, R. Rizzo and P. Tricoli, “High Efficiency Wind Generators with Variable Speed Dual-Excited Synchronous Machines,” International Conference on Clean Electrical Power 2007, Capri, 21-23 May 2007, pp. 795-800.
|
|
[2]
|
F. Blaabjerg and Z. Chen, “Power Electronics for Modern Wind Turbine,” Morgan & Claypool Publisher, 2006.
|
|
[3]
|
J. G. Slootweg, H. Polinder and W. L. Kling, “Dynamic Modeling of a Wind Turbine with Doubly Fed Induction Generator,” IEEE Power Engineering Society Summer Meeting, Vol. 1, 2001, pp. 644-649.
|
|
[4]
|
F. Mei and B. Pal, “Modal Analysis of Grid-Connected Doubly Fed Induction Generators,” IEEE Transactions on Energy Conversion, Vol. 22, No. 3, 2007, pp. 728-736.
doi:10.1109/TEC.2006.881080
|
|
[5]
|
Y. K. He, J. B. Hu and R. D. Zhao, “Modeling and Control of Wind-Turbine Used DFIG under Network Fault Conditions,” Proceedings of the 8th International Conference on Electrical Machines and Systems, 2005, Nanjing, Vol. 2, 29 September 2005, pp. 986-991
|
|
[6]
|
F. Wu, X.-P. Zhang, K. Godfrey and P. Ju, “Modeling and Control of Wind Turbine with Doubly Fed Induction Generator,” 2006 IEEE PES Power Systems Conference and Exposition, Atlanta, 29 October-1 November 2006.
|
|
[7]
|
A. Petersson, “Analysis, Modeling and Control of Doubly-Fed Induction Generators for Wind Turbines” Ph.D. Thesis, Division of Electric Power Engineering, Department of Energy and Environment, Chalmers University of Technology, Goteborg, 2005.
|