多电平变换器是近年来电力电子领域中高压大功率应用场合研究的一个

热点，这种变换器用容量小的器件输出高容量、高质量的电能，因此在中高压变

频调速、交流柔性输电系统等场合得到了广泛的关注。-Multi-level converter is a hot field of power electronics in recent years, research in high-voltage power applications, this converter output high-capacity, high-quality electricity with a small capacity devices, so the high frequency control, flexible AC transmission systems and other occasions to get a lot of attention.