采用共地逆变器和改进的移相调制技术的单相七电平开关电容器。

IF 3.9 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Scientific Reports Pub Date : 2025-02-04 DOI:10.1038/s41598-025-86180-y

Bisma Saif, Adil Sarwar, Shafiq Ahmad, Shiue-Der Lu, Hwa-Dong Liu

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引用次数: 0

摘要

近年来，由于光伏逆变器具有效率高、成本低、体积小等优点，引起了电力电子和可再生能源领域的研究人员的广泛关注。然而，更高的效率通常导致更多的组件，使逆变器昂贵和笨重。本文提出了一种单相无变压器共地拓扑。所提出的拓扑结构利用10个开关、4个电容器和1个二极管。本文还提出了一种改进的相移（PS）调制技术，以降低总体损耗。当采用改进的相移（PS）实现时，所提出的拓扑在15w时的最高效率为98.05%。电压谐波的THD%由17.20%降至15.29%，电流谐波的THD%由10.15%降至5.07%。并对逆变器的可靠性进行了分析。仿真和硬件结果验证了该逆变器的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A single-phase seven-level switched capacitor with common ground inverter and improved phase-shift modulation technique.

Lately, transformer-less Researchers in the fields of power electronics and renewable energy have taken notice of photovoltaic inverters because of their great efficiency, low cost, and small size. However, higher efficiency typically results in more components, making the inverter costly and bulky. This article proposes a single-phase seven-level transformer-less with common ground topology. The proposed topology utilizes 10 switches, 4 capacitors and 1 diode. This article also suggests an improved Phase Shift (PS) Modulation Technique which reduces overall losses. When implemented with improved Phase Shift (PS), the total highest attainable efficiency of the proposed topology is 98.05% at 15 W. The THD% of voltage harmonics is reduced to 15.29% from 17.20% and for current harmonics is reduced to 5.07% from 10.15%. The reliability of the proposed inverter has also been analyzed. The simulation as well as hardware results have been presented to validate the performance of the proposed inverter.

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来源期刊

Scientific Reports Natural Science Disciplines-

CiteScore

7.50

自引率

4.30%

发文量

19567

审稿时长

3.9 months

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