Effect of shading losses on the performance of solar module system using MATLAB simulation

2014 IEEE 2nd International Conference on Electrical Energy Systems (ICEES) Pub Date : 2014-10-16 DOI:10.1109/ICEES.2014.6924142

V. Anand, O. B. Priyan, B. Pesala

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引用次数: 6

Abstract

Silicon solar panels are widely used in photovoltaic applications. The voltage produced by each cell is limited to 1 V. Hence, solar cells are connected in series/parallel in order to obtain the desired voltage suitable for power conversion. Therefore, even a small amount of shading of solar cells/panels in the network affects the overall performance of the module significantly. To analyze the effect of shading on the overall system efficiency, we have used MATLAB Simulink tool to calculate Power vs Voltage (P-V) and Voltage vs Current (V-I) characteristics of solar panel under different shading conditions. Simulations show that for large panels even 20-30% shading of the solar module will result in 30-40% reduction in the power output. This demonstrates the importance of developing MPPT (Maximum Power Tracking) algorithms tailored to various situations which can work well in dusty environments and cloudy days. Its affect is of a prime interest to various IPP's (Independent Power Producers) especially in a large open solar farm.

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利用MATLAB仿真研究遮阳损失对太阳能组件系统性能的影响

硅太阳能电池板广泛应用于光伏应用。每个电池产生的电压限制为1v。因此，太阳能电池以串联/并联的方式连接，以获得适合于功率转换的所需电压。因此，即使是网络中太阳能电池/面板的少量遮阳也会显著影响组件的整体性能。为了分析遮阳对系统整体效率的影响，我们使用MATLAB Simulink工具计算了不同遮阳条件下太阳能电池板的功率vs电压(P-V)和电压vs电流(V-I)特性。模拟表明，对于大型面板，即使20-30%的遮阳太阳能模块将导致30-40%的功率输出减少。这表明开发适合各种情况的MPPT(最大功率跟踪)算法的重要性，这些算法可以在多尘环境和多云天气下良好地工作。它的影响是各种IPP(独立电力生产商)的主要利益，特别是在大型开放式太阳能农场。

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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2014 IEEE 2nd International Conference on Electrical Energy Systems (ICEES)

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