CAJ | 학술논문

提出了一种在超同步转速范围内平滑双馈异步风力发电机（ DFIG）转子侧有功功率波动的混合控制策略。该策略在传统的双馈异步风力发电机组控制基础上，引入了变桨距和直流侧电压混合控制。变桨距控制用来平滑有功功率波动的低频分量；直流侧电压控制的给定值叠加一个随功率波动变化的偏差电压，用来平滑有功功率波动的高频分量。在Matlab/Simulink平台上，搭建了DFIG构成的风力发电系统，分别采用传统控制策略和文中提出的混合控制策略进行仿真，结果表明，混合控制策略有效平滑了发电机转子侧有功功率的波动。
제출료일충재초동보전속범위내평활쌍궤이보풍력발전궤（ DFIG）전자측유공공솔파동적혼합공제책략。해책략재전통적쌍궤이보풍력발전궤조공제기출상，인입료변장거화직류측전압혼합공제。변장거공제용래평활유공공솔파동적저빈분량；직류측전압공제적급정치첩가일개수공솔파동변화적편차전압，용래평활유공공솔파동적고빈분량。재Matlab/Simulink평태상，탑건료DFIG구성적풍력발전계통，분별채용전통공제책략화문중제출적혼합공제책략진행방진，결과표명，혼합공제책략유효평활료발전궤전자측유공공솔적파동。
A coordinated control strategy to smooth rotor-side active power of DFIG in the super-syn-chronous speed range is presented in this paper .The coordinated control between variable-pitch control and DC-link voltage control is introduced to conventional strategy .The variable-pitch control is used to smooth the low frequency components of active power fluctuations .The DC-link voltage control is used to smooth the high frequency components of active power fluctuations .The voltage reference is determined by adding a smoothing index coming from high frequency components of output power fluctuations .Simu-lation model of DFIG wind generation system is built in Matlab/Simulink .The results show that the power fluctuations of the generator rotor side are effectively smoothed by the coordinated control strategy .