中国电机工程学报Issue(30)：41-49,9.
基于器件的结温变化评估风机中参数差异对网侧变流器可靠性的影响
Effects of Different Parameters on Reliability of Grid-side Converters Based on Varied Junction Temperature of Devices in Wind Turbines
摘要
Abstract
The reliability of converters is significant for wind energy conversion systems. However, the effect of junction temperature fluctuation is not valued by present papers when evaluating reliability of converters in wind turbines based on junction temperature of devices. As a result, it is often overestimated. Based on bad operating environments of permanent magnetism synchronous generators (PMSGs), the change of the cutting in wind speed, the rated wind speed, the cutting out wind speed, the switching frequency and the power factor, leading to the difference of junction temperature and its’ fluctuation of devices, was considered in the paper, and the Coffin-Manson reliability evaluation model was used to evaluate the difference of reliability of converters in the grid side. Then, consideried the actual wind speed, a 1 MW wind turbine was illustrated. The test results verified the correctness of the theoretical analysis. The result indicates that the change of rated wind speed and switching frequency has a significant effect on converters’ reliability. To get high reliability of converters, it is suggested that the wind turbine would better cut in with a low wind speed and cut out with a high wind speed possible.关键词
可靠性/变流器/结温/风机参数/风速Key words
reliability/converter/junction temperature/parameters of wind turbine/wind speed分类
信息技术与安全科学引用本文复制引用
杨珍贵,周雒维,杜雄,孙鹏菊,毛娅婕..基于器件的结温变化评估风机中参数差异对网侧变流器可靠性的影响[J].中国电机工程学报,2013,(30):41-49,9.基金项目
国家自然科学基金重点资助项目(51137006)；输配电装备及系统安全与新技术国家重点实验室重点项目资助(2007DA 10512711101)；中央高校基本科研业务费资助(CDJZR11150013)。Project Supported by Natural Science Foundation Key Project (51137006) （51137006）
Scientific Research Foundation of State Key Lab of Power Transmission Equipment and System Security (2007DA10512711101) （2007DA10512711101）
The Fundamental Research Funds for the Central Universities (CDJZR11150013) （CDJZR11150013）
