JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Damping for Wind Turbine Electrically Excited Synchronous Generators
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Damping for Wind Turbine Electrically Excited Synchronous Generators
Tianyu, Wang; Guojie, Li; Yu, Zhang; Chen, Fang;
  PDF(new window)
 Abstract
The electrically excited synchronous generator (EESG) is applied in wind turbine systems recently. In an EESG control system, electrical torque is affected by stator flux and rotor current. So the control system is more complicated than that of the permanent-magnet synchronous generator (PMSG). Thus, the higher demanding of the control system is required especially in case of wind turbine mechanical resonance. In this paper, the mechanism of rotor speed resonant phenomenon is introduced from the viewpoint of mechanics firstly, and the characteristics of an effective damping torque are illustrated through system eigenvalues analysis. Considering the variables are tightly coupled, the four-order small signal equation for torque is derived considering stator and rotor control systems with regulators, and the bode plot of the closed loop transfer function is analyzed. According to the four-order mathematical equation, the stator flux, stator current, and electrical torque responses are derived by torque reference step and ramp in MATLAB from a pure mathematical deduction, which is identical with the responses in PSCAD/EMTDC simulation results. At last, the simulation studies are carried out in PSCAD software package to verify the resonant damping control strategy used in the EESG wind turbine system.
 Keywords
Electrically excited synchronous generator;Stator flux oriented;Small signal analysis;Damping torque control;
 Language
English
 Cited by
 References
1.
"Global wind report annual market update 2014,"[on line]. Available on http://www.gwec.net/publications/

2.
"global wind energy outlook 2014," [on line]. Available on http://www.gwec.net/publications/global- wind-energy-outlook/

3.
Abdullah, “A Pitch control design for optimum energy capture in variable-speed wind turbines,” Systems, Signals & Devices, 2013 10th international multi-conference, Hammamet, Tunisia, Mar. 2013.

4.
M. Liserre, R. Cardenas, M. Molinas, J. Rodriguez, “Overview of multi-MW wind turbines and wind parks,” IEEE Trans. on Industrial Electronics, vol. 54, no. 4, pp. 1081-1095, 2011.

5.
Ribrant, J. Stockholm, “Survey of Failures in Wind Power Systems With Focus on Swedish Wind Power Plants During 1997-2005,” IEEE Trans. on Energy conversion, vol. 21, no. 1, pp. 167-173, Mar 2007.

6.
M. Barcaro, N. Bianchi, “Interior PM machines using ferrite to substitue rare-earth surface PM machines,” International Conference on Elecrical Machines (ICEM), Marseille, France, Sep 2012.

7.
Henk Polinder, Frank F. A. van der Pijl, Gert-Jan de Vilder, Peter J. Tavner, “Comparison of diret-drive and geared generator concepts for wind turbines”, IEEE Trans. on energy conversion, vol. 21, no. 3, pp. 725-733, Sep 2006. crossref(new window)

8.
Salman, Salman K. “Windmill modeling consideration and factors influencing the stability of a grid- connected wind power-based embedded generator” IEEE Transactions on Power Systems, vol. 18, no. 2, pp. 793-802, May 2003.

9.
Mandic. G, Nasiri. A, Muljadi. E, Oyague. F, “Active Torque Control for Gearbox Load Reduction in a Variable-Speed Wind Turbine”, IEEE Transactions on Industry Applications, vol. 48, no. 6, pp. 2424-2423, 2012. crossref(new window)

10.
Conroy, J; Watson, R. “Aggregate modelling of wind farms containing full-converter wind turbine generators with permanent magnet synchronous machines: Transient stability studies” IET Renewable Power Generation, vol. 3, no. 1, pp. 39-52, 2009. crossref(new window)

11.
VAkhmatov, “Analysis of dynamic behavior of electric power systems with large amount of wind power,” Ph.D. dissertation, Ørsted DTU, Kgs.Lyngby, Denmark, 2003.

12.
Hua Geng, Xu, D., Bin Wu, Geng Yang, “Active Damping for PMSG-Based WECS With DC-Link Current Estimation”, IEEE Transactions on Industrial Electronics, vol. 58, no. 5, pp. 1110-1119, 2011. crossref(new window)

13.
Akhmatov, Vladislav “Variable-speed wind turbines with doubly-fed induction generators Part IV: Uninterrupted operation features at grid faults with converter control coordination” Wind Engineering, vol.27, no.6, pp.519-529, 2003. crossref(new window)

14.
Hua Geng, David Xu1, Bin Wu, Geng Yang, ” Comparison of oscillation damping capability in three power control strategies for PMSG-based WECS”, Wind Energ, vol. 14, pp. 389-406, 2011. crossref(new window)

15.
Bhowmik, Shibashis; Spec, René; Enslin, Johan H. R. “Performance optimization for doubly fed wind power generation systems” IEEE Transactions on Industry Applications, vol. 35, no. 4, pp. 949-958, 1999. crossref(new window)

16.
Wang Zhong, Sun Yuanzhang, Li Guojie, Li Xiong, “analysis of current loop parameter in the vector control of DFIG wind turbines” Automation of electric power systems, vol. 32, no. 21, pp. 91-96, 2008.

17.
Wang Tianyu, Li Guojie, Zhang Yu, Fang Chen, “Resonant Damping for Wind Turbine Electrically Excited Synchronous Generators”, Wind energy Grid-Adaptive Technologies 2014, Chejudo, Korea, 2014

18.
S. Brownlees, B. Fox, D. Flynn, and T. Litter, “Wind farm induced oscillations” Proc.41st Int.UPEC, vol. 1, pp. 118-122, sep.2006.

19.
Jain, A.K.; Ranganathan, V.T. Modeling and Field Oriented Control of Salient Pole Wound Field Synchronous Machine in Stator Flux Coordinates, IEEE Transactions on Industrial Electronics, vol. 58, no. 3, pp. 960-970, 2011.

20.
F. Blaschke, “The principle of Field Orientation as applied to the Transvecktor closed loop control system for rotating field machines,” Seimens Rev, vol. 39, no. 5, pp. 217-220, May 1972.

21.
K. H. Bayer, H. Waldmann, and M. Weibelzahl, “Field oriented closeloop control of a synchronous machine with a new Transvecktor control system,” Seimens Rev., vol. 39, no. 5, pp. 220-223, May 1972.