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

被引：3
|
作者：
Hamada, Toshiyuki [1 ]
Nakamoto, Kenta [1 ]
Nanno, Ikuo [1 ]
Ishikura, Norio [2 ]
Oke, Shinichiro [3 ]
Fujii, Masayuki [4 ]
机构：
[1] Ube Coll, Natl Inst Technol, 14-1 Tokiwadai, Ube, Yamaguchi 7558555, Japan
[2] Yonago Coll, Natl Inst Technol, 4448 Hikonacho, Yonago, Tottori 6838502, Japan
[3] Tsuyama Coll, Natl Inst Technol, 624-1 Numa, Tsuyama, Okayama 7080824, Japan
[4] Oshima Coll, Natl Inst Technol, 1091-1 Oazakomatsu, Suooshima, Yamaguchi 7422104, Japan
来源：
PROCEEDINGS OF THE 21ST INTERNATIONAL SYMPOSIUM ON HIGH VOLTAGE ENGINEERING, VOL 1 | 2020年 / 598卷
关键词：
Lightning-induced surge; Bypass diode; Schottky-barrier diode; Photovoltaic module; Artificial lightning; Natural lightning;
D O I：
10.1007/978-3-030-31676-1_113
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
引用
收藏
页码：1218 / 1224
页数：7
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