介绍了双馈风力发电系统空载并网与解列的控制策略及实现方法。分析双馈电机空载并网的基本原理，推导了空载并网双馈电机的数学模型，提出了按电网电压定向的空载并网控制方案。利用仿真软件搭建了依据特性方程的双馈风力发电系统空载并网与解列的仿真模型。构建了基于英飞凌XC2785单片机的试验平台。仿真及试验结果表明：空载并网控制能很好地实现定子电压对电网电压的快速跟随，并网与解列瞬间冲击电流几乎为零，实现了发电系统的柔性并网和解列。%A control strategy and implement methods for the no load grid connection and disconnection of double-fed induction generator( DFIG) wind power generation system were introduced. The mathematical model of DFIG was established by the analysis of the no load grid connection, and the no load grid connected control strategy was made by the grid voltage orientation vector control. The simulation software was used to establish the simulation model for the no load grid connection and disconnection of double-fed wind power generation system by the characteristic equation. The experiment platform based on Infineon XC2785 SCM was constructed. The simulation and experiment results showed that no load grid connection control could well realize the fast tracking between the stator voltage and the grid voltage as well as the impulse current was almost zero in the grid connection and disconnection, thus the soft grid connection and disconnection of DFIG was realized.
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