Author : V.Aruna 1
Date of Publication :7th October 2016
Abstract: Due to the wind speed variation, wind shear and towershadow effects, grid connected wind turbines are the sources of power fluctuations which may produce flicker during continuous operation. This paper presents a model of an MW-level variablespeed wind turbine with a doubly fed induction generator to investi-gate the flicker emission and mitigation issues. An individual pitch control (IPC) strategy is proposed to reduce the flicker emission at different wind speed conditions and also extend, an advanced pitch angle control strategy based on the fuzzy logic is proposed for the variable-speed wind turbine systems. The fuzzy logic controller is employed for change blade angle of wind turbine and constant power can be achieve. The block diagram of proposed pitch control which consists of pitch controller, actuator model and turbine linearized modeled by using Matlab/Simulink software.
Reference :
-
- T. Sun, ―Power Quality of grid-connected wind turbines with DFIG and their interaction with the grid,‖ Ph.D. dissertation, Aalborg Univ, Aalborg, Denmark, 2004.
- L. Rossetto, P. Tenti, and A. Zuccato, ―Electromagnetic compatibility issues in industrial equipment,‖ IEEE Ind.Appl. Mag., vol. 5, no. 6, pp. 34–46, Nov./Dec. 1999.
- A Larsson, ―Flicker emission of wind turbines during continuous operation,‖ IEEE Trans. Energy Convers., vol. 17, no. 1, pp. 114–118, Mar. 2002.
- H. Sharma, S. Islam, T. Pryor, and C. V. Nayar, ―Power quality issues in a wind turbine driven induction generator and diesel hybrid autonomous grid,‖ J. Elect. Electron.Eng., vol. 21, no. 1, pp. 19–25, 2001.
- M. P. Papadopoulos, S. A. Papathanassiou, S. T. Tentzerakis, and N. G. Boulaxis, ―Investigation of the flicker emission by grid connected wind turbines,‖ in Proc. 8th Int. Conf. Harmonics Quality Power, Athens, Greece,1998, vol. 2, pp. 1152–1157.
- T. Sun, Z. Chen, and F. Blaabjerg, ―Flicker study on variable speed wind turbines with doubly fed induction generators,‖ IEEE Trans. Energy Converters., vol. 20, no. 4, pp. 896–905, Dec. 2005.
- K. Yun-Seong and W. Dong-Jun, ―Mitigation of the flicker level of a DFIG using power factor angle control,‖ IEEE Trans. Power Del., vol. 24, no. 4, pp. 2457–2458,Oct. 2009.
- W. Hu, Z. Chen, Y. Wang, and Z. Wang, ―Flicker mitigation by active power control of variable-speed wind turbines with full-scale back-to back power converters,‖ IEEE Trans. Energy Converters., vol. 24, no. 3, pp. 640– 649, Sep. 2009.
- E. A. Bossanyi, ―Individual blade pitch control for load reduction,‖ Wind Energy, vol. 6, pp. 119–128, 2002.
- E. A. Bossanyi, ―Further load reductions with individual pitch control,‖ Wind Energy, vol. 8, pp. 481– 485, 2005