一种模块化多电平变换器交流侧导纳计算方法

Connecting a modular multilevel converter to an ac grid may cause stability issues, which can be assessed by analyzing the converter ac-side admittance in relation to the grid impedance. This paper presents a method for calculating the ac-side admittance of modular multilevel converters, analyzing the main frequency components of the converter variables individually. Starting from a time-averaged ...