This paper introduces the idea of multilevel inverter. The different multilevel inverter structures are compared. Various multicarrier PWM modulation strategies are analyzed and researched.

• 介绍了多电平逆变器的思想,对多电平逆变器不同的拓扑结构进行了比较,研究和分析了用于多电平逆变器不同的多载波PWM调制策略。