一种准双极性的三电平空间矢量调制方法  

A Novel SVPWM Strategy for Three-Level NPC Inverter

作　　者：宋文祥[1] 张海燕[2] 项立峥[2] 陈陈[3] 

机构地区：[1]上海大学自动化系,上海200072 [2]上海发电设备成套设计研究院,上海200240 [3]上海交通大学,上海200240

出　　处：《电机与控制应用》2009年第6期26-30,共5页Electric machines & control application

摘　　要：基于三电平逆变器冗余电压矢量的不同处理方式,提出了一种准双极性的三电平空间电压矢量调制方案。推导出用于空间电压矢量合成的作用时间,并详细分析了电压矢量的发送模式。该调制方案中,逆变器三相桥臂的每相电平变化关于半周期对称,便于计算机数字化实现。试验研究结果证实了所提出的调制方法的有效性。Based on the particular disposition of all the redundant voltage vectors, a novel SVPWM strategy called semi-bipolar PWM pattern for the three-level neutral-point-clamped voltage source inverter is proposed. The new modulation approaeh shows superior performance for the harmonic voltage and the control of neutral-point poten- tial compared to the popular eight-stage centered SVPWM pattern. The feasibility of the proposed control approach has been verified via experiment results.

关 键 词：三电平逆变器 空间矢量调制 准双极性调制模式 

分 类 号：TM464[电气工程—电器]