Based on the modulation theory and the Fourier analysis of switch function, the mechanism of interhamonics in source side is analyzed with an example of CSI and a simple model is established.

• 以常见的电流源变频器为例,运用谐波调制理论,并结合开关函数的傅立叶分析,分析了电流源变频器在电源侧产生间谐波的机理,建立其简化模型。