双馈异步风力发电系统网侧变换器的控制研究

Research on Double-fed Induction Wind Power System Gird Side Converter

网侧变换器的控制是双馈风力发电变流系统稳定运行的关键。在深入分析网侧变换器数学模型的基础上,设计了一套内环电流PR调节、外环电压PI调节的双闭环控制系统。与此同时,在Matlab/Simulink软件中搭建其仿真模型,且采用M语言简化了空间矢量脉宽调制(SVPWM)模块的研发,并进一步完成了相关仿真研究。在已搭建的双馈风力发电实验平台上开展了实验研究。结果表明,所提控制方法及相关设计满足要求。

Controlling of the grid side converter is the key of doubly fed wind power converter system operation.A set of double closed loop control system, namely inner loop current PR regulating and outer loop voltage PI regulating, based on the analysis of the mathematical model of grid side converter is designed.At the same time,a simulation model is built in Maflab/Simulink software, M language is used to simplify the development of space vector pulse width modulation（SVPWM） module, and the relevant simulation study is further completed.Experimental study is cartied out in doubly fed wind power generation experiment platform which has been built.The results show that the pro-posed control method and the design can meet the requirements.