一种五电平ANPC变换器的调制技术研究  

A New Modulation Technology of Five-Level ANPC Converter

作　　者：耿后来[1] 李星 曹伟[1] 徐清清[1] 李顺 GENG Houlai;LI Xing;CAO Wei;XU Qingqing;LI Shun(Sungrow Power Supply Co.,Ltd.,Hefei 230088,China)

机构地区：[1]阳光电源股份有限公司,安徽合肥230088

出　　处：《通信电源技术》2021年第12期18-21,共4页Telecom Power Technology

摘　　要：分析一种带悬浮电容的中性点钳位五电平逆变器的工作原理,针对其在高压时的模块应力和输出电流质量问题,结合最近矢量调制和悬浮电容平衡控制的方案,提出了一种基于平均概念的调制技术,产生所需的交流输出电压,降低功率模块应力的同时降低输出电流的总谐波失真(Total Harmonic Distortion,THD)。仿真研究验证了此方案的正确性,最后通过实验结果证明了所提调制技术的有效性。This article analyzes the principle of the neutral point clamped five-level inverter with floating capacitor,in order to overcome the problem of the module stress and output current quality of the five-level inverter with floating capacitor at high voltage,combined with the recent vector modulation and floating capacitor balance control,This paper proposed a modulation technology based on the average concept to generate the required AC output voltage,reduce the power module stress and reduce the THD of the output current.Simulation research has verified the correctness of the scheme,experimental results demonstrate the effectiveness of the proposed modulation technology.

关 键 词：有源中性点钳位 悬浮电容平衡控制 五电平 脉宽调制 

分 类 号：TM4[电气工程—电器]