| IGBT模块中续流二极管关断过程失效机理分析 |
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| 引用本文： | 李世平,奉琴,陈彦,万超群,宋自珍.IGBT模块中续流二极管关断过程失效机理分析[J].变流技术与电力牵引,2014(5):28-32. |
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| 作者姓名： | 李世平 奉琴 陈彦 万超群 宋自珍 |
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| 作者单位： | 株洲南车时代电气股份有限公司,湖南株洲412001 |
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| 摘 要： | 鉴于IGBT模块中的续流二极管在关断过程中会发生瞬变,文章从二极管的设计准则出发,研究续流二极管发生失效的机理,并结合一个IGBT模块中二极管失效的具体案例进行分析,给出了二极管失效的几种原因,并提出了避免其失效的几种方法。
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| 关 键 词： | IGBT模块 续流二极管 反向恢复电流 热击穿 电压击穿 |
Analysis of Turn-off Failure Mechanism for the Freewheeling Diode in IGBT Module |
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| LI Shiping,FENG Qin,CHEN Yan,WAN Chaoqun,SONG Zizhen.Analysis of Turn-off Failure Mechanism for the Freewheeling Diode in IGBT Module[J].Converter Technology & Electric Traction,2014(5):28-32. |
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| Authors: | LI Shiping FENG Qin CHEN Yan WAN Chaoqun SONG Zizhen |
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| Institution: | (Zhuzhou CSR Times Electric Co., Ltd., Zhuzhou, Hunan 412001, China) |
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| Abstract: | In IGBT modules, freewheeling diodes experience instant change in its turn-off process. Based on the design rules of diodes, failure mechanism of freewheeling diodes was analyzed combined with a concrete failed case, and several failure mechanisms were proposed. Several solutions were introduced to avoid the failures. |
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| Keywords: | IGBT modules freewheeling diode fast-recovery current thermal breakdown voltage breakdown |
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