变速恒频双馈风电机组参数扰动对并网控制的影响

RESEARCH ON THE INFLUENCE OF PARAMETER PERTURBATION ON DOUBLY-FED INDUCTION GENERATOR CUTTING-IN CONTROL

通过对交流励磁变速恒频双馈风力发电机组(VSCF-DFIG)的空载并网矢量控制策略进行深入地分析和推导,首次正确地得到了双馈异步发电机参数扰动对并网过程中定子电压影响的量化表达式。仿真结果表明,双馈异步发电机转子绕组参数扰动会影响机组并网,降低并网成功率。探寻抗参数扰动的并网控制策略具有重要意义。

AC excited variable speed constant frequency （VSCF） wind power technique is promising in the future. Through the analysis of the vector no-load cutting-in control strategy of VSCF doubly-fed induction generator（DFIG）, equations that show how DFIG parameter perturbations during the cutting-in process influence the stator voltage are presented. Simulation results show that DFIG parameter perturbations could affect the cutting-in process, reducing the rate of successful integration. To explore new cutting-in control strategy is meaningful.