The Control Strategy of Hybrid Drive Wind Power Generation System During Load Fluctuation in the Grid

被引：0
|
作者：
Rui X. [1 ]
Yin W. [1 ]
Wu X. [1 ]
Ma Z. [1 ]
机构：
[1] School of Energy Power and Mechanical Engineering, North China Electric Power University, Changping District, Beijing
来源：
| 1600年 / Chinese Society for Electrical Engineering卷 / 37期
基金：
高等学校博士学科点专项科研基金;
关键词：
Control of speed regulating motor; Hybrid drive; Load fluctuation; Load torque observer; Ridge regression algorithm; Wind turbine;
D O I：
10.13334/j.0258-8013.pcsee.161231
中图分类号：
学科分类号：
摘要：
As a result of these shortcomings such as high cost, weak ability of low voltage ride through and poor reliability, when adopting frequency converters to get power with constant frequency in wind turbines, a kind of speed regulating method by using hybrid drive system to achieve variable speed constant frequency is becoming the hot area of research. However, the hybrid drive system is subject to the pulsating torque because of load fluctuation in the grid, which can seriously affect the accuracy of speed control of the speed regulating motor. Owing to these problems, a new control strategy composed by the linear quadratic controller and load torque observer for speed regulating motor was proposed. In addition, the related parameters including rotational inertia and viscous friction coefficient of the speed regulating system were calculated accurately via ridge regression algorithm. At last, we verified that the observer can observe the change of load torque rapidly under the operating conditions of changing wind and fluctuant load. Experimental results show that the control precision for output speed by using the designed controller can meet the practical requirements. In addition, the system has great stability during load fluctuation in the grid. © 2017 Chin. Soc. for Elec. Eng.
引用
收藏
页码：3809 / 3815
页数：6
相关论文
共 22 条
  • [1] Purvins A., Zubaryeva A., Llorente M., Et al., Challenges and options for a large wind power uptake by the European electricity system, Applied Energy, 88, 5, pp. 1461-1469, (2011)
  • [2] Muljadi E., Butterfield C.P., Effect of variable speed wind turbine generator on stability of a weak grid, IEEE Transactions on Energy Conversion, Special Issue on Wind Power, 22, 1, pp. 29-36, (2007)
  • [3] Riu X., Liu Y., Ma Z., Design of Wind Power Generating Unit, pp. 1-50, (2010)
  • [4] Shao G., Li J., Zhao B., Et al., Varying speed control strategy of MW variable speed constant frequency wind turbine, Acta Energiae Solaris Sinica, 29, 9, pp. 1167-1171, (2008)
  • [5] Tang X., Miao F., Qi Z., Et al., Survey on frequency control of wind power, Proceedings of the CSEE, 34, 25, pp. 4304-4314, (2014)
  • [6] Li F., Wen C., Wang C., Et al., Design of nonlinear controller of novel variable-speed-constant-frequency wind power system, Acta Energiae Solaris Sinica, 36, 10, pp. 2429-2434, (2015)
  • [7] Ling Y., Dou Z., Gao Q., Et al., Improvement of the low-voltage ride-through capability of doubly fed induction generator wind turbines, Wind Engineering, 36, 5, pp. 535-551, (2012)
  • [8] Yuan G., Chai J., Li Y., Study on excitation converter of variable speed constant frequency wind generation system, Proceedings of the CSEE, 25, 8, pp. 90-94, (2005)
  • [9] Terryn W.C., Wind Turbine Design, pp. 23-40, (2012)
  • [10] Zhao X., Maiber P., A novel power splitting drive train for variable speed wind power generator, Renewable Energy, 28, 13, pp. 2001-2011, (2003)
123