三相变流器并网电流的分裂解耦控制方法

Split Decoupling Control Method of Grid Connected Current in Three-phase Converter

基于dq旋转坐标系下三相变流器的前馈解耦控制,提出一种分裂解耦控制方法。此方法通过一个解耦分裂因子k来平衡dq轴电流给定量与反馈量在控制器中的作用权重,并且可以根据工况时调整参数k的取值大小。仿真和实验结果表明,基于并网电流的分裂解耦控制方法简单,易于实现,当分裂因子取0.5时在变流器的动、稳态性能之间能够取得较好的平衡。

Based on feed-forward decoupling control method of three-phase converter under dq rotating coordinate system, split decoupling control method is proposed. A decoupling splitting factor k is used to balance the role weight between desired input and the feedback of dq axis current. The value of parameter k can be constantly adjusted by working conditions. The simulation and experimental results show that the split decoupling control method based on grid current is easy to implement, and when splitting factor taking the value 0.5, the dynamic-state performance and the steady-state performance of the converter can achieve a better balance.