现代电子技术2016，Vol.39Issue(21)：153-158,163,7.DOI:10.16652/j.issn.1004-373x.2016.21.037
基于SPWM的Z源T型三电平逆变器中点平衡和升压控制
Neutral point balance and boost control of Z-source T-type three-level inverter based on SPWM
摘要
Abstract
The Z-source three-level neutral point clamped (NPC) inverter has the disadvantage of more passive compo-nents. The topology of Z-source T-type three-level inverter is adopted,which has the same boost characteristics with Z-source NPC inverter,but has less quantity of switching devices and higher efficiency than those of Z-source NPC inverter. Taking Z-source three-level T-type inverter as an example,the methods of phase disposition(PD)and alternative phase opposition disposi-tion(APOD)are analyzed. The study found that the PD method can reduce the switching frequency and switching loss. The PD model of Z-source T-type three-level inverter was established with Matlab/Simulink. The simulation results show that the PD method can obtain preferable waveform quality. To solve the inherent neutral point imbalance of T-type three-level inverter,the method of injecting zero-sequence component to control the neutral point balance is put forward. The effectiveness of the pro-posed method was verified with an experiment.关键词
Z源/T型逆变器/同相电压偏移/反相电压偏移/中点平衡Key words
Z-source/T-type inverter/phase disposition/phase opposition disposition/neutral point balance分类
信息技术与安全科学引用本文复制引用
贾宇向,李润娟,刘涛..基于SPWM的Z源T型三电平逆变器中点平衡和升压控制[J].现代电子技术,2016,39(21):153-158,163,7.基金项目
国家自然科学基金项目(51256069) （51256069）
河南省自然科学基金(1412085MA02) （1412085MA02）
河南省教育厅科学研究项目(ZH2015214) （ZH2015214）
