考虑老化与积灰影响的电动汽车充电模块功率器件寿命预测  

Life Prediction of Power Devices in Electric Vehicle Charging Module Considering the Effects of Aging and Dust Accumulation

作　　者：刘鸿鹏 张梦媛 安春光 张伟[1] 窦真兰 童贤靓 LIU Hongpeng;ZHANG Mengyuan;AN Chunguang;ZHANG Wei;DOU Zhenlan;TONG Xianliang(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education(Northeast Electric Power University),Jilin 132012;State Grid Shanghai Municipal Electric Power Company,Shanghai 200433)

机构地区：[1]现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林132012 [2]国网上海市电力公司,上海200433

出　　处：《电气工程学报》2024年第2期288-296,共9页Journal of Electrical Engineering

基　　金：国家电网有限公司科技资助项目(2094021N00S)。

摘　　要：功率器件的稳定工作是整流器可靠运行的重要保证,功率器件的寿命预测也是提高系统可靠性的有效手段。然而,当前的寿命评估中仅预测了器件持续工作的寿命,且并未考虑因器件老化与积灰导致的热阻在全寿命周期内的变化情况。针对这一问题,提出了一种表征器件老化与积灰影响的随寿命消耗分段更新的灵活等效热模型,利用计及时段气温的方法,对不同场景下持续工作和实际断续工作的功率器件进行了寿命预测。选用VIENNA整流器作为30 kW电动汽车充电模块的前级拓扑结构,构建随寿命消耗分段更新的灵活等效热模型。通过对比不同场景下的功率器件寿命预测结果,验证了所提方法具有更高的预测精度。The stable operation of power devices is an important guarantee for the reliable operation of the rectifier,and the life prediction of power devices is also an effective means to improve the reliability of the system.However,in the current life assessment,only the continuous working life of the device is predicted,and the change of thermal resistance caused by device aging and dust accumulation in the whole life cycle is not taken into account.In order to solve this problem,a flexible equivalent thermal model is proposed to characterize the effect of device aging and dust accumulation,which is updated with life consumption.The life prediction of power devices in continuous operation and actual discontinuous operation under different scenarios is carried out by using the method of measuring the temperature in time segment.The VIENNA rectifier is selected as the front-stage topology of the charging module of 30 kW electric vehicle,and a flexible equivalent thermal model updated with life consumption is constructed.By comparing the life prediction results of power devices in different scenarios,it is verified that the proposed method has higher prediction accuracy.

关 键 词：功率器件 寿命预测 器件老化 积灰影响 灵活等效热模型 

分 类 号：TM561[电气工程—电器]