High Gain Isolated DC-DC Converter with Current Sharing for Hot Swap for Photovoltaic Panels

2022 IEEE International Power and Renewable Energy Conference (IPRECON) Pub Date : 2022-12-16 DOI:10.1109/IPRECON55716.2022.10059535

Jose Luis Morales Nieto, José Heriberto Rodríguez Estrada, Elías José Juan Rodríguez Segura, Cecilia Gordillo Tapia, J. Nolasco, Pablo Israel Guzmán Tafoya

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Abstract

The use of power converters in DC micro-grids is a requirement because it allows connecting different types of sources to a single DC bus that distributes electrical power where several loads are connected. This paper presents DC-DC power converter modules, based on the two-phase Flyback converter, with inputs in parallel to a 30 V and 250 W photovoltaic panel, and its outputs in series, to generate a 380 V voltage level. The converter operates in interleaved mode with current mode control, and a shared current control is added between the modules with the hot-swap function. Three of these modules are interconnected to form a DC micro-grid. The converter features a low component count, compared to the high voltage gain achieved, as well as galvanic isolation between the source and the DC bus, efficient current balancing between the modules in the micro-grid is achieved with the implemented shared current control method.

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用于光伏板热插拔的高增益隔离DC-DC共流变换器

在直流微电网中使用功率转换器是必需的，因为它允许将不同类型的源连接到单个直流母线，该母线在连接多个负载的情况下分配电力。本文介绍了基于两相反激变换器的DC-DC功率变换器模块，其输入并联于30v和250w的光伏板，输出串联，产生380v电压电平。该转换器工作在交错模式下，具有电流模式控制，并且具有热插拔功能的模块之间增加了共享电流控制。其中三个模块相互连接形成直流微电网。与实现的高电压增益相比，变换器具有低元件数的特点，以及源和直流母线之间的电流隔离，通过实现的共享电流控制方法，实现了微电网中模块之间的有效电流平衡。

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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2022 IEEE International Power and Renewable Energy Conference (IPRECON)

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