一种适用于高压变频器串联叠波技术的研究  

Research on a series stacked wave technology suitable for high voltage inverter

作　　者：赵兴彦 ZHAO Xing-yan(Tianshui Electric Drive Research Institute Group Co.,Ltd.,Tianshui 741020,China;State Key Laboratory of Large Electric Drive System and Equipment Technology,Tianshui 741020,China)

机构地区：[1]天水电气传动研究所集团有限公司,甘肃天水741020 [2]大型电气传动系统与装备技术国家重点实验室,甘肃天水741020

出　　处：《电气传动自动化》2020年第2期28-30,34,共4页Electric Drive Automation

摘　　要：围绕高压大功率变频传动系统,采用H桥功率单元串联多电平变换技术,对其功率单元的工作原理进行了详细分析。提出了一种适用于单相级联H桥型变流器通用型多电平矢量脉宽调制(SVPWM)算法,该算法将单相多电平简化为单相两电平脉宽调制,使得计算过程简化,谐波特性更为优良,输出波形接近完美正弦波,并通过Matlab软件实验平台验证了该算法的可行性和正确性。This paper focuses on the high-voltage high-power frequency conversion drive system,uses the H-bridge power unit series multi-level conversion technology,analyzes the working principle of its power unit in detail,and proposes a general multi-level vector pulse width modulation(SVPWM)algorithm that is suitable for the single-phase cascade H-bridge converters.The algorithm simplifies the single-phase multi-level pulse width modulation into single-phase two-level pulse width modulation,which simplifies the calculation process,improves the harmonic characteristics,and its output waveform is nearly perfect sine wave.The feasibility and correctness of the algorithm are verified by Matlab software experiment platform.

关 键 词：多电平变频器 串联叠波 SVPWM方法 级联H桥 

分 类 号：TM921[电气工程—电力电子与电力传动]