【摘要】 针对目前统一潮流控制器 ( UPFC)输出建模方法和拓扑建模方法的不足 ,通过引入正弦脉宽调制 ( SPWM)控制下的开关函数概念 ,建立可反映 UPFC装置内部开关特性和运行机理的基于SPWM控制的 UPFC开关函数数学模型。该模型清晰地指出了 UPFC最终的输入控制量和输出量 ,并考虑了串、并联变压器的不同变比及三相电网电压的不平衡 ,较原有输出模型更具一般性更多还原

【Abstract】 In consideration of the existing shortages of output model constructing method and topological model constructing method for UPFC, a switching function mathematical model of this device based on SPWM control is constructed by introducing the concept of switching function under SPWM control. The model reflects the internal switching character and the physical course of UPFC, and distinctly indicates the final input controlled variables and output variables of UPFC. It has more generality than the output model with the consideration of the different ratio of series shunt transformer and unbalance of three phase network voltage.更多还原