CAJ | 학술논문

电力电子电路主功率器件是电力电子电路核心组成部分，对应其故障特征参数提取技术是实现电力电子电路故障诊断及故障预测的重要技术基础，对于提高电力电子电路的可靠性非常有帮助。该文首先介绍了目前电力电子电路主功率器件的可靠性分布情况，并以失效率较高的主功率开关器件为例，着重分析了有源功率开关MOSFET和IGBT器件失效机理以及主要衰退特征。对现阶段这两种有源功率开关器件故障特征参数提取方法进行了总结分类：故障特征参数直接提取和间接提取。在此基础上，介绍了各故障特征参数提取技术的工作原理，并对这些方法进行了归纳总结，分析了各自的优势及不足，最后指出了功率开关器件故障特征参数提取的研究难点和今后的研究方向。
전력전자전로주공솔기건시전력전자전로핵심조성부분，대응기고장특정삼수제취기술시실현전력전자전로고장진단급고장예측적중요기술기출，대우제고전력전자전로적가고성비상유방조。해문수선개소료목전전력전자전로주공솔기건적가고성분포정황，병이실효솔교고적주공솔개관기건위례，착중분석료유원공솔개관MOSFET화IGBT기건실효궤리이급주요쇠퇴특정。대현계단저량충유원공솔개관기건고장특정삼수제취방법진행료총결분류：고장특정삼수직접제취화간접제취。재차기출상，개소료각고장특정삼수제취기술적공작원리，병대저사방법진행료귀납총결，분석료각자적우세급불족，최후지출료공솔개관기건고장특정삼수제취적연구난점화금후적연구방향。
Power electronics main circuit devices are the core part of power electronics circuits, and the fault feature extraction (FFE) of power electronics power devices plays an key role in realization of the diagnostics and prognostics of the power electronics converters, which has very important significance for improving the reliability of power electronics equipment. Firstly, the distribution reliability of power electronics devices is shown in the paper, and the failure mechanism and failure feature of active power switches (MOSFET, IGBT) are analyzed. The FFE of the active power switches are classified into two categories: one is the direct extraction and the other is the indirect extraction. Based on the above, the principles of each FFE of MOSFET and IGBT are introduced, and these methods are summarized. In addition, the advantage and disadvantage of each method are also discussed. At last, the difficulties and trends of the research on FFE of power switch devices are indicated.