电测与仪表2016，Vol.53Issue(21)：28-34,64,8.
考虑不同时间尺度的风电变流器功率模块可靠性评估模型
Multi-time scales reliability evaluation model of power modules in wind power converter
摘要
Abstract
Under variable wind speeds operation , the power modules of wind power converters suffered different time-scales of junction temperature variations;the long-term junction temperature variation caused by series changed wind speed time , as well as the short-term fundamental frequency junction temperature variation caused by working commu-tation.In order to generally estimate the reliability effect of long-term and short-term junction temperature , a multi-time scales reliability evaluation model has been developed in this paper .As with long-term junction temperature vari-ation, thermal factor and thermal cycling factors have been introduced based on FIDES guide and the effect of wind speed and wind turbulence have been evaluated .As with short-term junction temperature variation , multi-states evalu-ation philosophy has been adopted , and the wind speed distribution has been allotted to address the different effects to power module reliability .Finally , taking a real field wind power converter as example , the reliability has been as-sessed and the effects of design parameters have been analyzed .The achievement of the research would prove useful reference for the enhancement of wind power converter reliability .关键词
风电变流器/可靠性评估/时间尺度/结温波动/多状态Key words
wind power converter/reliability evaluation/time scale/junction temperature variation/multi-state分类
信息技术与安全科学引用本文复制引用
季海婷,李辉,吴建梅,李川..考虑不同时间尺度的风电变流器功率模块可靠性评估模型[J].电测与仪表,2016,53(21):28-34,64,8.基金项目
国家自然科学基金资助项目（51377184）；重庆市教委科学技术研究项目 （）
