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中文摘要：
双馈感应风力发电机（DFIG）在连续运行中会出现电压闪变问题,为了稳定风机的输出功率,提出变换器和桨距角联合控制策略,额定风速以下时采用变换器控制使风能利用系数达到最大,额定风速以上时采用桨距角和变换器联合控制使风机输出功率维持在额定功率。通过仿真分析表明,提出的控制策略在不同风速条件下达到了预期的效果。
英文摘要：
Grid-connected DFIG wind turbines are fluctuating power sources that may produce flicker during continuous operation.To smooth the output power,the combination control strategy which introduces pitch control and inverter control was applied in this article.When the wind speed is lower than the rated level,the method by inverter control makes the rotor power coefficient maximum;when wind speed exceeds the rated level,the method by pitch control and inverter control makes the output power keep the rated power.The method in this article achieves the desired results under the dissimilar wind speed through the simulation.
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