重庆工商大学学报（自然科学版）2024，Vol.41Issue(5)：97-103,7.DOI:10.16055/j.issn.1672-058X.2024.0005.012
新型七电平逆变器的功率均衡调制策略
Power Balance Modulation Strategy for a Novel Seven-level Inverter
郭猛1
作者信息
- 1. 安徽理工大学电气与信息工程学院,安徽淮南 232001
- 折叠
摘要
Abstract
Objective The traditional phase disposition(PD)modulation method has good harmonic performance when applied to cascaded H-bridge inverters,but there is an imbalance in output power between different units.To solve the problem of power imbalance while preserving better harmonic performance,an improved and optimized modulation strategy was proposed to simplify the control difficulty and at the same time,make the inverter power balanced and output a better power quality.Methods Firstly,the modulating waveform was optimized to simplify the control.Then,the switching signals of each unit were logically operated,and the switching signals were redistributed so that the switch conduction time of each unit was equal.Results Simulation of improved and optimized modulation and traditional PD modulation proved that the improved and optimized modulation will not change the output voltage characteristics of traditional PD modulation,and the power balance of each unit can be realized.Finally,experimental verification was conducted on the improved and optimized modulation.Conclusion The improved and optimized modulation simplifies the control,ensures power balance and yields a better output voltage.关键词
级联H桥/调制策略/逻辑运算/功率均衡Key words
cascaded H-bridge/modulation strategy/logic operation/power balance分类
信息技术与安全科学引用本文复制引用
郭猛..新型七电平逆变器的功率均衡调制策略[J].重庆工商大学学报（自然科学版）,2024,41(5):97-103,7.
