CAJ | 학술논문

转子侧控制器主导了双馈风电机组的动态，对其进行准确建模至关重要。针对转子侧控制器模型结构复杂、存在相互影响的问题，推导了转子侧控制器的解耦模型。基于该解耦模型，提出通过在输入信号的参考值上施加伪随机信号，根据输入信号和输出信号的自功率谱和互功率谱，辨识转子侧控制器各参数。与灵敏度比较发现，参数辨识精度与灵敏度结果一致。最后指出：即使转子侧控制器内环参数的辨识精度偏低，也基本不影响对双馈风电机组机电暂态过程的分析。
전자측공제기주도료쌍궤풍전궤조적동태，대기진행준학건모지관중요。침대전자측공제기모형결구복잡、존재상호영향적문제，추도료전자측공제기적해우모형。기우해해우모형，제출통과재수입신호적삼고치상시가위수궤신호，근거수입신호화수출신호적자공솔보화호공솔보，변식전자측공제기각삼수。여령민도비교발현，삼수변식정도여령민도결과일치。최후지출：즉사전자측공제기내배삼수적변식정도편저，야기본불영향대쌍궤풍전궤조궤전잠태과정적분석。
Accurate modeling of the rotor side controller of a doubly-fed induction generator (DFIG)-based wind turbine is of vital importance since it has great effects on the dynamics of DFIG-based wind turbines.The complexity and interactions of its original model make its parameters difficult to estimate.Therefore,a new decoupling model is deduced.It is also proposed that the pseudo random binary signal be superimposed into the reference input,and the parameters are estimated by the transfer function relating an output signal to an input signal.The estimation results agree well with those of sensitivities.It is pointed out that the poor estimation results of parameters in the inner part of the controller are acceptable since they have little effect on DFIG-based wind turbine electro-mechanical dynamics.