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首页> 外文会议>European Photovoltaic Solar Energy Conference and Exhibition >INTEGRATED SWITCH FOR SUBSTRING RECONFIGURATION TO OPTIMIZE MODULE POWER UNDER PARTIAL SHADING
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INTEGRATED SWITCH FOR SUBSTRING RECONFIGURATION TO OPTIMIZE MODULE POWER UNDER PARTIAL SHADING

机译：集成开关，用于在部分阴影下优化模块电源

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The output power of a PV module can drop significantly if there is a current mismatch between the series-connected individual cells. This current mismatch can arise due to differences in temperatures of the cells or simply because of partial shading of the PV panel. The most common solution to this problem is by bypassing those limiting cells (in practice, the entire substring containing them is bypassed) and in doing so, ensuring a higher output power. The problem with this approach is that there might still be a lot of power available in those bypassed cells, both in those who are actually shaded (when it is not a 100% shade) and in those still fully illuminated, but merely belonging to that bypassed substring. A reconfigurable module topology might be more efficient. In such a topology the connections between the substrings can be rearranged during operation in order to maximize the module power output. For this topology to be effective, a network of very low-ohmic (not exceeding a few mΩ) switches are needed, capable of communication from anywhere in the panel. This paper describes the design of such a reconfiguration switch.
机译：如果串联连接的单个单元之间存在电流不匹配，则PV模块的输出功率可以显着下降。由于电池的温度差异或仅仅是因为PV面板的局部遮荫而导致这种电流不匹配可以出现。对此问题的最常见解决方案是绕过这些限制单元（在实践中，包含它们的整个子字符串被绕过）和这样做，确保更高的输出功率。这种方法的问题是，在那些实际阴影的人（当它不是100％阴影时）而且在那些仍然完全照亮的人中，可能仍然有很多功率。但是仅属于那个绕过的子字符串。可重新配置的模块拓扑可能更有效。在这种拓扑结构中，可以在操作期间重新排列子串之间的连接，以便最大化模块功率输出。对于这种拓扑有效，需要一种非常低欧姆（不超过几MΩ）开关的网络，能够从面板中的任何位置进行通信。本文介绍了这种重新配置开关的设计。

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