An Improved Neutral-Point Voltage Control Method for Ten-Switch Three-Phase Three-Level Inverter Using Virtual Space Vector Modulation

2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI:10.1109/PEDG56097.2023.10215308

Xiaojun Deng, Hongliang Wang, Wei Tang, Di Kang, Yang Jiang, X. Yue, An Luo

{"title":"An Improved Neutral-Point Voltage Control Method for Ten-Switch Three-Phase Three-Level Inverter Using Virtual Space Vector Modulation","authors":"Xiaojun Deng, Hongliang Wang, Wei Tang, Di Kang, Yang Jiang, X. Yue, An Luo","doi":"10.1109/PEDG56097.2023.10215308","DOIUrl":null,"url":null,"abstract":"This paper briefly reviews the neutral-point voltage control (NPVC) method for ten-switch three-phase three-level inverter (TP-TLI). Then, an improved NPVC method based on virtual space vector modulation, named as (IVSVM) is proposed for ten-switch TP-TLI. By analyzing vector synthesis principle in each region, a new control degree is explored to improve the NPVC capability. It preferentially distributes the duty ratio to the virtual small vector which can provide more average NP current in a switching cycle. Analysis results show that the available NP current provided by the proposed IVSVM is about 2.75 times at most than that provided by traditional VSVM. Besides, by adjusting the duty ratios of redundant small vectors, an active NPVC method is presented to eliminate the dc offset and ac ripples in NPV. Experimental results are carried out to verify the effectiveness and advantages of the proposed IVSVM.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PEDG56097.2023.10215308","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

This paper briefly reviews the neutral-point voltage control (NPVC) method for ten-switch three-phase three-level inverter (TP-TLI). Then, an improved NPVC method based on virtual space vector modulation, named as (IVSVM) is proposed for ten-switch TP-TLI. By analyzing vector synthesis principle in each region, a new control degree is explored to improve the NPVC capability. It preferentially distributes the duty ratio to the virtual small vector which can provide more average NP current in a switching cycle. Analysis results show that the available NP current provided by the proposed IVSVM is about 2.75 times at most than that provided by traditional VSVM. Besides, by adjusting the duty ratios of redundant small vectors, an active NPVC method is presented to eliminate the dc offset and ac ripples in NPV. Experimental results are carried out to verify the effectiveness and advantages of the proposed IVSVM.

查看原文本刊更多论文

一种改进的虚拟空间矢量调制十开关三相三电平逆变器中性点电压控制方法

本文简要介绍了十开关三相三电平逆变器(TP-TLI)的中性点电压控制方法。然后，针对十开关TP-TLI，提出了一种基于虚拟空间矢量调制的改进NPVC方法(IVSVM)。通过分析各区域的矢量合成原理，探索了一种新的控制度来提高NPVC性能。它优先将占空比分配给在一个开关周期内能提供更多平均NP电流的虚拟小矢量。分析结果表明，所提IVSVM提供的可用NP电流最多为传统VSVM的2.75倍左右。此外，通过调整冗余小矢量的占空比，提出了一种主动NPVC方法来消除NPV中的直流偏置和交流纹波。实验结果验证了该方法的有效性和优越性。

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

2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

自引率

0.00%

发文量