一种级联H桥三电平整流器脉宽调制方法研究  

The Study of A PWM Method for Cascade H-Bridge Three-level Rectifier

作　　者：张志[1] 刘畅[1] 唐校[1] 康丽[1] 

机构地区：[1]东莞理工学院电子工程与智能化学院,广东东莞523808

出　　处：《东莞理工学院学报》2016年第5期34-40,共7页Journal of Dongguan University of Technology

基　　金：广东省公益研究与能力建设专项(2015A010106018);广东省教育厅高校创新人才项目(2014KQNCX 217)

摘　　要：以两个功率单元级联为例,提出了一种适用于单相级联H桥三电平整流器脉宽调制方法。以减小功率器件的开关频率和保证直流侧电容电压平衡为控制目标,对该三电平变流器运行于整流工况进行了详细分析。优化选择了输出矢量作用顺序,并进行了仿真和实验验证。该方法具有算法简单、易于数字实现和通用性好的特点。仿真和实验结果验证了本文所提调制方法的正确性和有效性。Taking two power cells cascaded as an example,a PWM algorithm is proposed for single-phase cascaded H-bridge five-level converter. Rectification operating mode of the three-level converter is described in detail in this paper. In order to lower the switching frequency and balance the capacitor voltage,the output voltage vectors are optimal for the two operating modes,and the proposed PWM is verified by simulation and experiment,the algorithm is general,simple and easy to digital realization. The simulational and experimental results prove its validity and feasibility.

关 键 词：级联H桥 脉宽调制 电容电压平衡 三电平 

分 类 号：TM464[电气工程—电器]