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中文摘要：
为了实现大容量风电机组的无冲击软并网,基于电网电压定向矢量控制原理,针对变速恒频双馈风力发电机组的运行特点,通过选取合适的切换函数,抑制外部扰动引起的电网电压波动,提出一种基于转子电流参考值的双积分变结构控制策略。该控制方法动态响应快,对电网电压波动及电机参数变化具有较强的鲁棒性,并可避免基于定子磁链定向矢量控制方法中定子磁链检测不准确给电网造成的冲击。仿真结果表明,该方法是有效的。
英文摘要：
In order to achieve shockless grid connection of the wind generator with high-capacity,the article presents double integral sliding mode control strategy based on the reference value of the current of the rotor.This is done by analyzing the operation behavior of variable speed constant frequency（VSCF） wind power generation based on doubly fed induction generator.This control strategy has quickly dynamic response and strong robustness for grid voltage fluctuation and the variation of motor parameters.Also,the control strategy avoids the impact to the grid caused by the inaccurate stator flux linkage testing.The results of the study show that the method in this paper is effective.
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