An Improved Multilevel Inverter for Single-Phase Transformerless PV System

Faraji Faramarz; Birjandi Ali Akbar Motie; Mousavi Sayed Mohammad G.; Zhang Jianhua; Wang Baocheng; Guo Xiaoqiang

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An Improved Multilevel Inverter for Single-Phase Transformerless PV System

机译：一种改进的单相变压器PV系统的多级逆变器

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摘要

A single-phase Three-Level Split-Inductor Neutral Point Clamped Inverter-Improved (3L-SI-NPCI2) for transformerless photovoltaic (PV) application is proposed in this article. The proposed inverter utilizes two split inductors, which eliminate the shoot-through issue. Therefore, it is more reliable than conventional converters. Not needing dead time, achieving a high efficiency with lower current THD and low leakage current are other advantages of the proposed inverter. The operation principle, dynamic performance, output filter design and impacts of asymmetric filter inductors on leakage current are illustrated in the 3L-SI-NPCI2. The proposed topology is compared to seven existing transformerless topologies by simulation studies and results. Finally, an experimental prototype has been developed to show the benefits of the proposed inverter.

机译：本文提出了一种用于无变形光伏（PV）应用的单相三级分流电感器中性点夹紧逆变器改进（3L-Si-NPCI2）。所提出的逆变器利用两个分割电感，消除了拍摄问题。因此，它比传统转换器更可靠。不需要死区时间，通过较低电流THD实现高效率，低漏电流是所提出的逆变器的其他优点。在3L-Si-NPCI2中示出了操作原理，动态性能，输出滤波器设计和对漏电流上的不对称滤波器电感器的影响。通过模拟研究和结果将所提出的拓扑与七种现有的无变形拓扑进行比较。最后，已经开发了一种实验原型来展示所提出的逆变器的益处。

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来源
《IEEE Transactions on Energy Conversion》 |2021年第1期|281-290|共10页
作者
Faraji Faramarz; Birjandi Ali Akbar Motie; Mousavi Sayed Mohammad G.; Zhang Jianhua; Wang Baocheng; Guo Xiaoqiang;
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作者单位

Yanshan Univ Dept Elect Engn Qinhuangdao 066004 Hebei Peoples R China;

Shahid Rajaee Teacher Training Univ Fac Elect Engn Tehran 1678815811 Iran;

Iran Univ Sci & Technol Sch Railway Engn Tehran Iran;

Yanshan Univ Dept Elect Engn Qinhuangdao 066004 Hebei Peoples R China;

Yanshan Univ Dept Elect Engn Qinhuangdao 066004 Hebei Peoples R China;

Yanshan Univ Dept Elect Engn Qinhuangdao 066004 Hebei Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
3L-SI-NPCI2; transformerless PV system; multilevel inverter; high efficiency; high reliability;

机译：3L-Si-NPCI2;无变压器光伏系统;多级逆变器;高效率;高可靠性;

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专利

1. A new structure of single-phase two-stage hybrid transformerless multilevel PV inverter [J] . Kuncham Sateesh Kumar, Annamalai Kirubakaran, Nallamothu Subrahmanyam International journal of circuit theory and applications . 2019,第1期

机译：单相两阶段混合无变压器多电平光伏逆变器的新结构
2. A Novel Dual-Input High-Gain Transformerless Multilevel Single-Phase Microinverter for PV Systems [J] . Ibrahim Eltaib Abdeen D., Gaafar Mahmoud A., Orabi Mohamed, Trends in Ecology & Evolution . 2020,第5期

机译：用于光伏系统的新型双输入高增益无变压器多级单相微逆换器
3. An Improved Zero-Current-Switching Single-Phase Transformerless PV H6 Inverter With Switching Loss-Free [J] . Hua F. Xiao, Li Zhang, Yanqing Li IEEE Transactions on Industrial Electronics . 2017,第10期

机译：一种无开关损耗的改进型零电流开关单相无变压器PV H6逆变器
4. H5-HERIC based transformerless multilevel inverter for single-phase grid connected PV systems [C] . G. Vazquez, P. R. Martinez-Rodriguez, J. M. Sosa, Annual Conference of the IEEE Industrial Electronics Society . 2015

机译：基于H5-HERIC的单相并网光伏系统无变压器多电平逆变器
5. DC-side High Impedance Ground Fault Detection for Transformerless Single-phase PV Systems. [D] . Wang, Gang. 2016

机译：无变压器单相光伏系统的直流侧高阻抗接地故障检测。
6. Adaptive fuzzy sliding control of single-phase PV grid-connected inverter [O] . Juntao Fei, Yunkai Zhu -1

机译：单相光伏并网逆变器的自适应模糊滑模控制
7. A transformerless single-phase symmetrical Z-source HERIC inverter with reduced leakage currents for PV systems [O] . Kerui Li, Yanfeng Shen, Yongheng Yang, 2018

机译：具有降低PV系统漏电流的无变压器单相对称Z源逆变器
8. Operation principles and some test results of inverters for grid connected PV systems. Part 1: Operation principles of inverters and MPPT's for grid connected PV systems, and Part 2: Results of an experimental comparative analysis of the Fraunhofer inverter and the TUE-IGBT inverter [R] . De Haan, S. W. , Veltman, A. T. 1993

机译：用于并网光伏系统的逆变器的工作原理和一些测试结果。第1部分：用于并网光伏系统的逆变器和mppT的工作原理，以及第2部分：弗劳恩霍夫逆变器和TUE-IGBT逆变器的实验对比分析结果

An Improved Multilevel Inverter for Single-Phase Transformerless PV System

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