微网下双馈风力发电系统并网运行研究  

Study of grid-connected operation of doubly-fed induction generator system under microgrid

作　　者：梁佳琦 方彦军[1] 

机构地区：[1]武汉大学动力与机械学院

出　　处：《武汉大学学报（工学版）》2018年第2期172-177,共6页Engineering Journal of Wuhan University

基　　金：国家自然科学基金资助项目(编号:61201168)

摘　　要：提出一种基于旋转坐标系下双馈异步发电机（DFIG）数学模型,利用新的定子磁链定向方式推导出空载、负载并网控制与DFIG矢量控制策略,解决交流励磁风力发电机并入微电网冲击较大及功率控制不佳的现状.以Matlab/Simulink为仿真平台分析搭建整体交流励磁发电系统模型,对仿真所得电压、电流波形进行分析后对相关参数不断调整,可行性评估后表明该方案最大程度减小了对主网的冲击,验证了该方案的有效性.Aiming at the present problems of relatively huge impact and poor power control which are led by the AC-excited wind power generator incorporated into AC microgrid, this paper puts forward a new stator flux orientation control strategy. Based on the mathematical model of rotational coordinate system of the doubly-fed induction generator, the strategies of no-load grid connection control, load grid connection control and DFIG vector control are deduced. The effectiveness of this scheme is verified through analyzing and constructing the whole system model of AC-excited power with MATLAB/SIMULINK as the simula- tion platform, constantly adjusting relevant parameters after analyzing the voltage and current waveform got by the simulation, so as to show that this scheme can minimize the impact on the main grid with the feasibility assessment.

关 键 词：微电网 双馈风力发电机 负载并网 可行性评估 

分 类 号：TM315[电气工程—电机]