摘要
为了减小双馈风力发电系统受电网电压跌落的影响,提出了一种改进的双馈发电机矢量控制方法。该方法在设计转子电流控制器时考虑了定子磁链的动态变化过程,加入了相应的前馈补偿项。实验结果证明,该方法能有效抑制电压跌落下发电机转子的过电流,并且能控制发电机向电网输出一定的无功,从而使双馈风力发电机实现了低电压穿越。
An improved vector control strategy of doubly-fed induction generator（DFIG） was proposed to reduce the impact of DFIG based wind turbine system caused by grid voltage dips. The dynamics of the stator flux is considered when designing the rotor current controller, with adding feedforward compensation terms corresponded to it. The experimental results prove that this method can restrain the rotor side over-current effectively while the DFIG can support some reactive power to the grid, so that the low voltage ride-through （LVRT） of the DFIG can be achieved.
出处
《电气传动》
北大核心
2010年第11期9-12,共4页
Electric Drive
基金
国家科技支撑计划(2006BAA01A19)
关键词
风力发电
双馈发电机
改进的矢量控制
低电压穿越
wind power generation
doubly- fed induction generator （DFIG）
improved vector control
low voltage ride-through（LVRT）
