Reducing Common-mode voltage and power dissipation in cascaded multilevel inverters with flexible dc sources

H. Ghoreishy, A. Yazdian, S. Farhangi, M. Mohamadian
{"title":"Reducing Common-mode voltage and power dissipation in cascaded multilevel inverters with flexible dc sources","authors":"H. Ghoreishy, A. Yazdian, S. Farhangi, M. Mohamadian","doi":"10.1109/PEDSTC.2010.5471836","DOIUrl":null,"url":null,"abstract":"dc sources in cascaded multilevel inverters have constant and non-flexible values. Flexibility in the proposed values increases the system degrees of freedom in mitigating more harmonics leading to an improved THD. In this paper, a novel SHM control strategy has been proposed for cascaded multilevel inverters with flexible dc sources. Minimizing the objective function in the proposed strategy, the optimized dc sources values are found besides the switching angles. These optimized sources have lower values compared to the conventional ones. This is a major advantage of this proposed strategy as it leads to a lower common-mode voltage and power dissipation along with a significant improvement in the THD. Software implementation of the conventional and proposed SHM control strategies has been applied to five and seven-level inverters. Results show the superiority of the proposed strategy from the THD point of view along with the reduction in Common-mode voltage and power dissipation.","PeriodicalId":104998,"journal":{"name":"2010 1st Power Electronic & Drive Systems & Technologies Conference (PEDSTC)","volume":"38 10","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 1st Power Electronic & Drive Systems & Technologies Conference (PEDSTC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PEDSTC.2010.5471836","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5

Abstract

dc sources in cascaded multilevel inverters have constant and non-flexible values. Flexibility in the proposed values increases the system degrees of freedom in mitigating more harmonics leading to an improved THD. In this paper, a novel SHM control strategy has been proposed for cascaded multilevel inverters with flexible dc sources. Minimizing the objective function in the proposed strategy, the optimized dc sources values are found besides the switching angles. These optimized sources have lower values compared to the conventional ones. This is a major advantage of this proposed strategy as it leads to a lower common-mode voltage and power dissipation along with a significant improvement in the THD. Software implementation of the conventional and proposed SHM control strategies has been applied to five and seven-level inverters. Results show the superiority of the proposed strategy from the THD point of view along with the reduction in Common-mode voltage and power dissipation.
降低柔性直流电源级联多电平逆变器的共模电压和功耗
级联多电平逆变器中的直流电源具有恒定和非柔性值。建议值的灵活性增加了系统自由度,减少了更多的谐波,从而改善了THD。本文针对具有柔性直流电源的级联多电平逆变器,提出了一种新的SHM控制策略。通过最小化目标函数,找到除开关角外的最优直流源值。与传统光源相比,这些优化后的光源具有较低的数值。这是该策略的一个主要优点,因为它可以降低共模电压和功耗,并显著改善THD。传统的和提出的SHM控制策略的软件实现已应用于五电平和七电平逆变器。结果表明,该策略在降低共模电压和功耗方面具有一定的优越性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信