基于轨迹投影的多电平变换器交流电流纹波分析

AC current ripple analysis of multilevel converters is of vital importance for modulation optimization, filter design, and inductor core loss evaluation. In this letter, the ripple analysis based on the projection of ripple trajectory in two-level modulation unit (2L-MU) is originally proposed, which avoids complicated circuit model analysis. The peak-to-peak and rms values of the ac current rippl...