摘要
基于双馈感应电机(DFIG)的五阶数学模型,建立了以电网侧电压和转子电流为控制量的简化数学模型。在此基础上分析了电网电压波动时的定子暂态电流的变化机理,提出一种转子电流前馈控制策略,通过转子阻尼电流消除电网电压波动引起的定子输出电流波动,从而提高DFIG的动态性能。实验结果证明了所提控制策略的正确性和有效性。
A simplified model of doubly-fed induction generator（DFIG） is obtained based on the 5th order model.It contains grid voltage and rotor current as control variables.An analytical approach to transient rotor current analysis based on simplified DFIG dynamic model is described.A feedforward rotor current control is carried out to cancel the stator current oscillation while the grid voltage fluctuating.The DFIG vector control performance is improved through the damping current control.The control strategy is verified by experiment.
出处
《电力电子技术》
CSCD
北大核心
2012年第6期48-49,76,共3页
Power Electronics
关键词
感应电机
矢量控制
前馈控制
induction generator
vector control
feedforward control
