一种新的三电平逆变器中性点电压纹波抑制不连续PWM方法

2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI:10.1109/ICPE.2015.7167835

Seungjong Yoo, June-Seok Lee, Kyo-Beum Lee

{"title":"一种新的三电平逆变器中性点电压纹波抑制不连续PWM方法","authors":"Seungjong Yoo, June-Seok Lee, Kyo-Beum Lee","doi":"10.1109/ICPE.2015.7167835","DOIUrl":null,"url":null,"abstract":"A new pulse width modulation (PWM) strategy which is an alternative approach of the discontinuous PWM (DPWM) for a three-level neutral-point-clamped (NPC) inverter is proposed in this paper. A three-level NPC inverter is completely mature and very well established topology in high-power applications. However, the three-level NPC inverter has the inherent problem of neutral-point voltage unbalancing due to the split dc-link capacitors. This structure can cause the large neutral-point voltage ripple. Furthermore, output currents of the three-level NPC inverter can be distorted by the neutral-point voltage ripple. In this paper, a new DPWM method using two different offsets for the neutral-point ripple reduction is proposed and the effectiveness of the proposed DPWM method is verified by using the simulation.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"308 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"A new discontinuous PWM method of three-level inverter for neutral-point voltage ripple reduction\",\"authors\":\"Seungjong Yoo, June-Seok Lee, Kyo-Beum Lee\",\"doi\":\"10.1109/ICPE.2015.7167835\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A new pulse width modulation (PWM) strategy which is an alternative approach of the discontinuous PWM (DPWM) for a three-level neutral-point-clamped (NPC) inverter is proposed in this paper. A three-level NPC inverter is completely mature and very well established topology in high-power applications. However, the three-level NPC inverter has the inherent problem of neutral-point voltage unbalancing due to the split dc-link capacitors. This structure can cause the large neutral-point voltage ripple. Furthermore, output currents of the three-level NPC inverter can be distorted by the neutral-point voltage ripple. In this paper, a new DPWM method using two different offsets for the neutral-point ripple reduction is proposed and the effectiveness of the proposed DPWM method is verified by using the simulation.\",\"PeriodicalId\":160988,\"journal\":{\"name\":\"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)\",\"volume\":\"308 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2015-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICPE.2015.7167835\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICPE.2015.7167835","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 3

摘要

本文提出了一种新的脉宽调制(PWM)策略，作为三电平中性点箝位(NPC)逆变器的不连续脉宽调制(DPWM)的替代方案。一个三电平的NPC逆变器是完全成熟的，非常完善的拓扑在大功率应用。然而，三电平NPC逆变器由于直流链路电容分裂而存在中性点电压不平衡的固有问题。这种结构会造成较大的中性点电压纹波。此外，中性点电压纹波会对三电平NPC逆变器的输出电流产生畸变。本文提出了一种采用两种不同的偏置来抑制中性点纹波的DPWM方法，并通过仿真验证了该方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

A new discontinuous PWM method of three-level inverter for neutral-point voltage ripple reduction

A new pulse width modulation (PWM) strategy which is an alternative approach of the discontinuous PWM (DPWM) for a three-level neutral-point-clamped (NPC) inverter is proposed in this paper. A three-level NPC inverter is completely mature and very well established topology in high-power applications. However, the three-level NPC inverter has the inherent problem of neutral-point voltage unbalancing due to the split dc-link capacitors. This structure can cause the large neutral-point voltage ripple. Furthermore, output currents of the three-level NPC inverter can be distorted by the neutral-point voltage ripple. In this paper, a new DPWM method using two different offsets for the neutral-point ripple reduction is proposed and the effectiveness of the proposed DPWM method is verified by using the simulation.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)

自引率

0.00%

发文量