电器与能效管理技术Issue(9)：1-7,14,8.DOI:10.16628/j.cnki.2095-8188.2024.09.001
基于任务剖面的光伏逆变器寿命预测研究
Study on Life Prediction of Photovoltaic Inverter Based on Mission Profile
袁娟 1陈正豪 2郑连清3
作者信息
- 1. 四川省电力公司 技能培训中心,四川 成都 610000
- 2. 华中科技大学电气与电子工程学院,湖北武汉 430074
- 3. 重庆大学电气工程学院,重庆 400030
- 折叠
摘要
Abstract
Taking the single-phase single-stage grid-connected photovoltaic inverters as the research object,a life prediction method of photovoltaic inverters based on mission profile was proposed.Taking the actual temperature and light intensity in a year as the mission profile,the IGBT thermal resistance model was imported into PLECS,and the junction temperature data was obtained after several thermal simulations.One year junction temperature profile of IGBT was obtained by the interpolation table lookup method,and the lifetime of individual IGBT was predicted by the rain-flow counting method and the analytical life model.Finally,the life distribution function of a single IGBT was obtained based on Monte Carlo simulation method,and the unreliability distribution function of four IGBTs of single-phase single-stage inverter was obtained by series block diagram method.The predicted results are in line with the actual situation that the service life of photovoltaic inverters is usually less than 15 years.关键词
光伏逆变器/插值查表法/雨流计数法/寿命预测/蒙特卡罗模拟法Key words
photovoltaic inverter/interpolation table lookup method/rain-flow counting method/life prediction/Monte Carlo simulation method分类
信息技术与安全科学引用本文复制引用
袁娟,陈正豪,郑连清..基于任务剖面的光伏逆变器寿命预测研究[J].电器与能效管理技术,2024,(9):1-7,14,8.
