Matlab/Simulink Based Modeling to Study Effect of Partial Shadow on Solar Photovoltaic Array
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- 作者：Xuan Hieu Nguyen
- 关键词：Matlab/Simulink ; Photovoltaic arrays ; Shading effect ; P–V and I–V characteristics ; Bypass diode
- 刊名：Environmental Systems Research
- 出版年：2015
- 出版时间：December 2015
- 年：2015
- 卷：4
- 期：1
- 全文大小：2,770 KB
- 刊物主题：Economics/Management Science, general;
- 出版者：Springer Berlin Heidelberg
- ISSN：2193-2697
文摘
Background Solar module is considered as fundamental power transformation unit of Photovoltaic (PV) generation system. The performance of a PV array strongly depends on operating environmental conditions such as operating temperature, solar insolation, shading array configuration. Often PV arrays get shadowed fully or partially by passing cloud, building, poles, trees, etc. Under such partial shading conditions, the operation of PV arrays get more complicated with more than one peak and it is very important to predict the characteristics to obtain possible maximum power. Furthermore, the mismatch losses and hotspot effects caused by partially shading cannot only affect the output power of solar system also can bring security and reliability problem. However, it is quite expensive and takes much time to get operating output characteristics of PV arrays under non uniform working conditions. Therefore, it is necessary to have a simulation model to study the effect of partial shading on solar PV arrays’ working characteristics. A 100 W solar panel is used as reference. The study also focuses on position of output peak power with varying location of shaded modules, different levels of solar irradiation as well as role of bypass diodes in this system.