摘要
本文首先分析五桥臂逆变器的工作模态,建立了五桥臂逆变器切换线性模型;其次研究五桥臂逆变器状态可控性,证明了五桥臂逆变器仅需6个工作模态,就可实现完全状态可控;由此提出6模态的最少模态空间矢量脉宽调制(SVPWM)。与现有SVPWM策略相比,最少模态SVPWM仅需采用一半的工作模态,简化了五桥臂逆变器的开关切换序列,从而使得功率器件的开关频率降低了2/3,减少了开关损耗,提高了逆变器效率。
On the basis of the analysis of operation modes,five-leg inverter is modeled as a switched linear system.Therefore,its state controllability can be studied,and that the five-leg inverter working with only six operation modes is completely states controllable can be verified.On the basis of the analysis,an m modes SVPWM technique using 6 space vectors is proposed.Compared to the existing SVPWM strategy,the novel one only works with a half of operation modes,and by this way the switching sequences can be simplified and therefore the switching frequency is reduced by 2/3.With simplified sequences,the switching loss can be reduced and the efficiency of the inverter can be improved.
作者
王文斌
张波
WANG Wen-bin;ZHANG Bo(School of Power Electricity,South China University of Technology,Guangzhou 510641,China)
出处
《电工电能新技术》
CSCD
北大核心
2018年第4期35-41,共7页
Advanced Technology of Electrical Engineering and Energy
基金
国家自然科学基金项目(50937001)
作者简介
王文斌(1993-),男,广东籍,硕士研究生,研究方向为电力电子与电气传动;(通讯作者)张波(1962-),男,福建籍,教授,博士,研究方向为电力电子与电气传动。
