一种新型多电平逆变器参考电压矢量分解算法  

Novel Reference Voltage Vector Decomposition Algorithm for Multi-level Inverter

作　　者：戴鹏[1] 邢履帅 吴斌[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《电气传动》2016年第3期58-61,共4页Electric Drive

摘　　要：为解决传统两电平空间电压矢量脉宽调制(SVPWM)算法推广应用于多电平时,计算量大、实时性差的问题,以中点钳位(NPC)H桥5电平逆变器为例,提出一种基于αβ坐标系的新型参考电压矢量分解SVPWM算法。该算法直接将5电平矢量分解为两电平,避免了先将5电平转化为3电平,再将3电平转化为两电平的繁琐过程,使总体计算量大为减少,提高了实时性,易于向更高电平推广。仿真与实验结果验证了所提算法的有效性。When traditional two-level SVPWM algorithm applied to multi-level,it is complex in calculation andreal-time performance is poor. Take neutral-point-clamped(NPC)H-bridge five-level inverter for instance,implementeda novel reference voltage vector decomposition algorithm based on αβ coordinate. This algorithm can directlytransformed five-level to two-level,avoiding the complicated process of firstly transforms five-level to three-level,thentransformed three-level to two-level. This method reduced the amount of calculation and improved the real-timeperformance,in addition,it could be applied to higher levels. The simulation and experimental results verify theeffectiveness of the proposed method.

关 键 词：多电平 参考电压矢量分解 空间电压矢量脉宽调制 中点钳位H桥5电平逆变器 

分 类 号：TM464[电气工程—电器]