基于微分几何方法的双馈发电机解耦控制

Decoupling control of doubly-fed induction generator based on the differential geometry method

为了最大限度地捕获风能,使风力发电系统按照最佳效率运行,提高发电质量,提出基于微分几何控制理论的双馈发电机非线性多输入多输出状态反馈解耦控制方案,通过非线性坐标变换和非线性状态反馈,使双馈发电机的磁链和转速两个的子系统实现动态完全解耦.理论推导和仿真实验表明,基于微分几何控制理论的解耦控制方案优于传统矢量控制方案.

In order to capture the wind energy with optimal efficiency and improved power quality, a decoupling control scheme with state feedback of nonlinear multi-input and multi-output of doubly-fed gener- ator was presented based on the differential geometry control theory. By using nonlinear coordinate transform and state variable feedback control laws, the full decoupling of two subsystem of the speed and flux of DFIG is implemented. It was shown by the theoretical analysis and simulation results, that the decoupling performance based on the differential geometry theory was superior to that of conventional vector control scheme.