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对象模型的不确定性和状态量微分信号难以提取一直是阻碍基于确定性模型的 HVDC非线性控制方法投入实际应用的因素。文中将非线性自抗扰方法应用于 HVDC系统的控制 ,利用非线性变换将 HVDC详细模型进行反馈线性化 ,提出了基于非线性自抗扰控制的整流侧定电流和逆变侧定熄弧角控制方法。数字仿真表明 ,该控制方法适用于较大的模型不确定性和内外扰动 ,具有很强的鲁棒性
Uncertainty and state quantity of object model Difficult to extract differential signal has always been a factor hindering the practical application of HVDC nonlinear control method based on deterministic model. In this paper, the nonlinear self-interference rejection method is applied to the control of HVDC system. The HVDC detailed model is linearized by nonlinear transformation. The rectifier-side fixed current and the inverter-side fixed arc-extinguishing angle Control Method. The numerical simulation shows that the proposed control method is suitable for large model uncertainties and internal and external disturbances, and has strong robustness