研究与开发
风电Crowbar装置整流二极管失效机理分析
陈明, 黄敏
中车株洲电力机车研究所有限公司,湖南 株洲 412000
Failure analysis of Crowbar rectifier diode for wind power system
Chen Ming, Huang Min
CRRC Zhuzhou Institute Co., Ltd, Zhuzhou, Hu’nan 412000
摘要 鉴于风电Crowbar装置整流二极管长期处于逆变器的开关脉冲整流、高-di /dt 和导通时间短的工作状态下,存在反向恢复工况恶劣、软因子小、振荡阶跃严重的情况,本文根据PIN二极管反向恢复机理,对出现的失效案例进行原因分析,并提出改进措施,为产品可靠运行提供了保障。
关键词 ：
Crowbar ,
整流二极管 ,
反向恢复 ,
失效机理
Abstract ：In view of the fact that the rectifier diode of Crowbar wind power device is in the long-term operation of the inverter's switching pulse rectifier, high -di /dt and short turn-on time, the reverse recovery condition is poor, the soft factor is small, and the snappy is serious. According to the reverse recovery mechanism of PIN diode, the cause analysis of the failure cases occurred, and the improvement measures are proposed to provide a guarantee for the reliable operation of the product.
Key words ：
Crowbar
rectifier diode
reverse recovery
failure mechanism
收稿日期: 2018-10-13
出版日期: 2019-05-21
作者简介 : 陈 明（1985-）,男,湖南永州人,本科,工程师,主要从事风电变流器的设计与开发工作。
引用本文:
陈明, 黄敏. 风电Crowbar装置整流二极管失效机理分析[J]. 电气技术, 2019, 20(5): 46-50.
Chen Ming, Huang Min. Failure analysis of Crowbar rectifier diode for wind power system. Electrical Engineering, 2019, 20(5): 46-50.
链接本文:
http://dqjs.cesmedia.cn/CN/Y2019/V20/I5/46
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2019, Vol. 20 
