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An investigation on partial shading of PV modules with different connection configurations of PV cells

机译：不同光伏组件连接结构的光伏组件局部遮挡的研究

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摘要

Partial shading is a commonly encountered issue in a PV (photovoltaic) system. In this paper, five different connection configurations of PV cells are studied to compare their performance under the condition of partial shading. They are SS (simple series), SP (series-parallel), TCT (total-cross-tied), BL (bridge-linked) and HC (honey comb) configurations. The electric network of each connection configuration is analyzed, taking into account the nonlinear nature of PV cells, by writing the Kirchhoffs voltage and current equations. The analysis is followed by solving the simultaneous nonlinear equations using the Newton-Raphson algorithm, which allows the I-V (current-voltage) characteristic of the module with a specific configuration in response to different types and levels of partial shading to be evaluated. Comparison of the maximum power and fill factors of the five connection configurations is then carried out. Also studied is the reverse voltage across each PV cell. It is found that in most cases, the TCT configuration has a superior performance over the other four configurations in most comparison indices.
机译：在PV（光伏）系统中，部分阴影是常见的问题。本文研究了五种不同的光伏电池连接结构，以比较它们在部分遮蔽条件下的性能。它们是SS（简单系列），SP（系列并行），TCT（完全交叉并列），BL（桥联）和HC（蜜梳）配置。考虑到PV电池的非线性特性，通过编写Kirchhoffs电压和电流方程，可以分析每种连接配置的电网。分析之后，使用牛顿-拉夫森算法求解联立的非线性方程，该算法允许评估具有特定配置的模块的I-V（电流-电压）特性，以响应于不同类型和级别的局部阴影评估。然后比较这五个连接配置的最大功率和填充系数。还研究了每个PV电池两端的反向电压。发现在大多数情况下，在大多数比较指标中，TCT配置均具有优于其他四个配置的性能。

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  • 来源
    《Energy》 |2011年第5期|p.3069-3078|共10页
  • 作者

    Yaw-Juen Wang; Po-Chun Hsu;

  • 作者单位

    Graduate School of Engineering Science and Technology, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan;

    Graduate School of Engineering Science and Technology, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan;

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  • 正文语种 eng
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  • 关键词

    connection configurations partial shading photovoltaic cells solar energy;

    机译：连接配置部分遮光光伏电池太阳能;

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