Characteristics of Failed Bypass Diodes for Photovoltaic Module by Artificial and Natural Lightning

Characteristics of Failed Bypass Diodes for Photovoltaic Module by Artificial and Natural Lightning
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人工和自然雷击导致光伏组件旁路二极管失效的特点

DOI：
10.1007/978-3-030-31676-1_113
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发表时间：
2020
期刊：
Lecture Notes in Electrical Engineering
影响因子：
--
通讯作者：
Fujii Masayuki
Fujii Masayuki
中科院分区：
--
文献类型：
--
作者：
Hamada Toshiyuki;Nakamoto Kenta;Nanno Ikuo;Ishikura Norio;Oke Shinichiro;Fujii Masayuki

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近年来，光伏组件中的旁路二极管(BPD)因雷电感应浪涌而失效，也发生了BPD烧毁的情况。在这项研究中，我们调查了光伏组件中BPD的特征，最有可能的故障原因是雷电引起的浪涌；对BPD进行了人工雷击测试；并将其故障特征与那些因自然闪电而失效的BPD进行了比较。结果，我们证实了暴露在雷电感生浪涌下的肖特基势垒二极管(SBD)表现出短模故障，其中故障电阻与雷电浪涌幅度的增加成反比。我们还确认了被自然雷击损坏的光伏组件中的BPD在短模式或开放模式下发生故障。当BPD在短模式下发生故障时，旁路电路中产生的循环电流会增加发热和点火的风险。
In recent years, bypass diodes (BPDs) in photovoltaic (PV) modules have failed because of lightning-induced surges, and burnout of BPDs has also occurred. In this study, we investigate the characteristics of BPDs in PV modules, with the most likely cause of failure being lightning-induced surges; conduct an artificial lightning test of BPDs; and compare the failure characteristics with those BPDs that failed due to natural lightning. As a result, we confirmed that the schottky barrier diodes (SBDs) exposed to lightning-induced surges show short-mode failures where the fault resistance decreases inversely proportionally to the increase in the lightning surge amplitude. We also confirmed that the BPD in the PV module damaged by natural lightning fails in short mode or open mode. When the BPD fails in short mode, the circulating current generated in the bypass circuit increases the risk of heat generation and ignition.
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期刊： --
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