【摘要】 多电平变换器作为一种应用于高压大功率变换场合的新型变换器,其相应的电路拓扑结构和PWM控制方法是当前的一个研究热点。基于现有的研究成果,本文对阶梯调制特定消谐方法进行了继续研究,推导了阶梯调制特定消谐方程组的模型,在求解过程中提出了双波段的思想,并对这种双波段(Pattern A和B)进行了求解。仿真和实验的结果都证明了阶梯调制特定消谐研究的正确性。更多还原

【Abstract】 Multilevel converter is a novel one for high-voltage high-power field and its corresponding topology construction and PWM method are two hot points of research.Based on state-of-the art,the selective harmonic elimination method of staircase modulating is derived in this paper.The dual bands(Pattern A and B) are presented and solution of it is solved.The results of simulation and experiment verify the precise of the staircase modulation.更多还原