一种用于太阳能光伏电站直接并网的改进k型七电平变换器拓扑

2023 IEEE IAS Global Conference on Renewable Energy and Hydrogen Technologies (GlobConHT) Pub Date : 2023-03-11 DOI:10.1109/GlobConHT56829.2023.10087497

Sanjay Upreti, S. Yadav, Bhim Singh, Narendra Kumar

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引用次数: 0

摘要

本文提出了一种改进的k型(IK-7)变换器，它使用三个太阳能阵列(每相)产生阶梯形式的多电平波形。这种多电平变换器的拓扑结构使用对称电压源。因此，它有助于利用太阳能光伏系统的更多电力。拟议的IK-7转换器配置产生七个电压水平，三个类似的光伏电源和八个固态开关。文中还很好地解释了所提出的具有合适导通路径的变换器的工作模式。该系统以并网方式运行，并在动态太阳能条件下对变流器电压和电流进行闭环控制。采用特定的谐波消除策略开关变流器，使变流器电压THD最小。在MATLAB中对系统进行了仿真，并在不同的太阳辐照度模式下测试了系统的动态性能。

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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An Improved K-Type Seven-Level Converter Topology for Direct Grid Integration of Solar Photovoltaic Plant

This paper presents an improved K-type (IK-7) converter, which uses three solar arrays (per phase) to generate the multilevel waveforms in staircase form. This topology of the multilevel converter uses symmetric voltage sources. Hence, it helps to harness more power from the solar photovoltaic system. The proposed IK-7 configuration of the converter generates seven voltage levels with three similar PV sources and eight solid-state switches. Operating modes are well explained for the proposed converter with a proper conduction path. The presented system is operated in grid-tied mode and employs closed-loop control for converter voltage and current in dynamic solar conditions. The specific harmonic elimination strategy is applied for switching the converter to have minimum converter voltage THD. System is simulated in MATLAB and its dynamic performance is tested in different modes of solar irradiance.

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来源期刊

2023 IEEE IAS Global Conference on Renewable Energy and Hydrogen Technologies (GlobConHT)

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