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Design and implementation of module integrated converters for series connected photovoltaic strings.

机译:用于串联光伏串的模块集成转换器的设计和实现。

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摘要

This thesis proposes an improved module integrated converter to increase energy capture in the photovoltaic (PV) series string. Prototypes for self-powered, high efficiency dc-dc converters that operate with autonomous control for tracking the maximum power of solar panels locally and on a fine scale are designed, simulated, built and tested. The resulting module is a reliable smart PV panel that operates independently of the geometry and complexity of the surrounding system. The controller maximizes energy capture by selection of one of three possible modes: buck, boost and pass-through. Autonomous controllers achieve noninteracting maximum power point tracking and a constant string voltage. The proposed module-integrated converters are verified in simulation. Experimental results show that the converter prototype achieves efficiencies of over 95% for most of its operating range. A three-module PV series string was tested under mismatched solar irradiation conditions and increases of up to 38% power capture were measured.
机译:本文提出了一种改进的模块集成转换器,以增加光伏(PV)串中的能量捕获。设计,模拟,构建和测试了用于自供电,高效DC-DC转换器的原型,该原型具有自主控制功能,可在本地以小规模跟踪太阳能电池板的最大功率。最终的模块是可靠的智能光伏面板,其运行与周围系统的几何形状和复杂性无关。控制器通过选择三种可能的模式之一来最大程度地捕获能量:降压,升压和直通。自主控制器实现了非相互作用的最大功率点跟踪和恒定的串电压。仿真中验证了所提出的模块集成转换器。实验结果表明,该转换器原型在其大部分工作范围内均达到了95%以上的效率。在不匹配的太阳辐射条件下测试了三模块PV系列管柱,并测量了高达38%的功率捕获增加。

著录项

  • 作者

    Linares, Leonor L.;

  • 作者单位

    University of Colorado at Boulder.;

  • 授予单位 University of Colorado at Boulder.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 M.S.
  • 年度 2009
  • 页码 78 p.
  • 总页数 78
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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