|
|
|
| Low Voltage Ride-Through Control Strategy of Doubly Fed Induction Generator |
| Zhang Yang, Huang Keyuan, Huang Shoudao |
| School of Electrical and Information Engineering Hunan University Changsha 410082 China |
|
|
|
|
Abstract Through the control of the machine side converter and the grid side converter of wind turbine,which can not only continuous operating,but also can help the grid voltage recovering. Realize the low voltage ride-through (LVRT) during symmetric grid fault. The control target of machine side converter is to realize the maximum wind energy tracking and control of reactive power .The control target of the grid side converter is to ensure the stability of DC bus voltage and control the reactive component of input current. The crowbar protection circuit is employed to ensure the rotor side current and DC bus voltage within the safe range. A speed loop is added based on the original double fed induction generator (DFIG) in this paper, which improve the dynamic performance of the speed and real-time power matching. The system anti impact ability is enhanced and the system stability is improved. The experimental results prove that the LVRT control method of DFIG is effective.
|
|
Received: 22 November 2014
Published: 18 August 2016
|
|
|
|
|
|
[1] 贺益康. 并网双馈异步风力发电机运行控制[M]. 北京: 中国电力出版社, 2011.
[2] 贺益康, 周鹏. 变速恒频双馈异步风力发电系统低电压穿越技术综述[J]. 电工技术学报, 2009, 24(9): 140-146. He Yikang, Zhou Peng. Overview of the low voltage ride-through technology for variable speed constant frequency doubly fed wind power generation systems[J]. Transactions of China Electrotechnical Society, 2009, 24(9): 140-146.
[3] Morren J, Sjoerd W H de Haan. Ride through of wind turbines with doubly-fed induction generator during a voltage dip[J]. IEEE Transactions on Energy Conversion, 2005, 20(1): 435-441.
[4] 肖磊, 黄守道, 黄科元. 不对称电网故障下直驱式永磁风力发电系统直流母线电压稳定控制[J]. 电工技术学报, 2010, 25(7): 123-129. Xiao Lei, Huang Shoudao, Huang Keyuan. DC voltage of stability in directly-driven wind turbine with PM synchronous generator during the asymme- trical faults[J]. Transactions of China Electrotechnical Society, 2010, 25(7): 123-129.
[5] Morren J, Haan S W H. Ride through of wind turbines with doubly-fed induction generator during a voltage dip[J]. IEEE Transactions on Energy Conversion, 2005, 20(2): 435-441.
[6] Li Yu, Guan Hongliang. LVRT capability of wind turbine generator and its application to regional power grid[C]//Proceedings of the 5th World Wind Energy Conference, Delhi, India, 2006.
[7] 黄守道, 肖磊, 黄科元. 不对称电网故障下直驱型永磁风力发电系统网侧变流器的运行与控制[J]. 电工技术学报, 2011, 26(2): 173-180. Huang Shoudao, Xiao Lei, Huang Keyuan. Operation and control on grid-side converter of directly-driven wind turbine with pm synchronous generator during the asymmetrical faults[J]. Transactions of China Electrotechnical Society, 2011, 26(2): 173-180.
[8] Chong H N, Li R. Unbalanced-grid-fault ride-through control for a wind turbine inverter[J]. IEEE Transa- ctions on Industry Applications, 2008, 44(3): 845- 856.
[9] Muyeen S M, Takahashi R, Murata T, et al. Low voltage ride through capability enhancement of wind turbine generator system during network disturbance[J]. IET Renewable Power Generation, 2009, 3(1): 65- 74.
[10] Yin B, Oruganti R, Panda S K, et al, An output- power-control strategy for a three-phase PWM rectifier under unbalanced supply conditions[J]. IEEE Transa- ctions on Industrial Electronics, 2008, 55(5): 2140- 2151.
[11] Li Z, Li Y, Wang P, et al. Control of three-phase boost-type PWM rectifier in stationary frame under unbalanced input voltage[J]. IEEE Transactions on Power Electronics, 2010, 25(10): 2521-2530.
[12] Zmood D N, Holmes D G. Stationary frame current regulation of PWM inverters with zero steady-state error[J]. IEEE Transactions on Power Electronics, 2003, 18(3): 814-822. |
|
|
|
2015, Vol. 30 
