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Performance Evaluation of a DC Direct-Coupled PV System in comparison with a Typical Grid-connected AC System for a Commercial Building

机译：直流直接耦合光伏系统与商用建筑的典型并网交流系统相比的性能评估

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摘要

With exponential hike in greenhouse gas emissions and depletion of fossil fuels, advancing renewable energy technology is the best available answer to global demands of clean and green energy. Solar Photovoltaic technology, although implemented worldwide, has a large further scope of improvement to create a fully accepted solar-powered society. One such concept can be a DC based photovoltaic system, which enables the use of DC power directly from solar panels without incorporating inverters.;This thesis is based on a system-level PV project, which evaluates a newly installed DC direct-coupled system which uses DC power for office LED lighting, in comparison with existing conventional DC-AC photovoltaic systems. The main objective is to verify the efficiency of both the PV system setups for defining an optimal solution for energy performance and value proposition in order to propose this configuration for a larger market application and electric utility acceptance, in general.;The system is studied by analyzing real-time data for a period of six months, measured for the various components that constitute the system and further compared on performance and economical grounds.;At the end, it concludes with AC overall being a better and cheaper solution at present. Although, with slight modifications in the current scenario, DC can prove to be a better option in certain specific applications.
机译：随着温室气体排放量的急剧增加和化石燃料的枯竭，先进的可再生能源技术是满足全球对清洁和绿色能源需求的最佳解决方案。太阳能光伏技术虽然在全球范围内得到了广泛应用，但它还有很大的改进空间，可以创建一个完全被认可的太阳能社会。一个这样的概念可以是基于直流的光伏系统，该系统可以直接使用太阳能电池板的直流电源而无需安装逆变器。本论文基于系统级光伏项目，该项目评估了新安装的直流直接耦合系统，该系统可以与现有的常规DC-AC光伏系统相比，其将DC电源用于办公室LED照明。主要目标是验证两种光伏系统设置的效率，以定义能源性能和价值主张的最佳解决方案，以便将该配置建议用于更大的市场应用和一般的电力公用事业。分析六个月的实时数据，对构成系统的各个组件进行了测量，并在性能和经济方面进行了进一步比较。最后，得出结论，AC总体而言是目前一种更好，更便宜的解决方案。尽管在当前情况下进行了少量修改，但在某些特定应用中，DC可能被证明是更好的选择。

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  • 作者

    Varshney, Utkarshaa.;

  • 作者单位

    State University of New York at Stony Brook.;

  • 授予单位 State University of New York at Stony Brook.;
  • 学科 Energy.;Engineering.;Sustainability.
  • 学位 M.S.
  • 年度 2016
  • 页码 61 p.
  • 总页数 61
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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