CAJ | 학술논문

级联H桥多电平逆变器可以用相对低耐压的器件满足高压、大功率应用场合的要求,因此变得越来越重要,但是其大量的使用开关器件却增加了故障出现的概率,限制了其在重要场合的应用。故此,在对级联H桥多电平逆变器的基本构成单元（单相全桥逆变器）进行研究,对其故障类型进行分类,分析其在发生故障时的电压输出波形,电流流向及其谐波特性的基础上提出了一种定位故障器件的方法。此方法可为级联式逆变器故障分析和冗余设计作参考和理论基础。
급련H교다전평역변기가이용상대저내압적기건만족고압、대공솔응용장합적요구,인차변득월래월중요,단시기대량적사용개관기건각증가료고장출현적개솔,한제료기재중요장합적응용。고차,재대급련H교다전평역변기적기본구성단원（단상전교역변기）진행연구,대기고장류형진행분류,분석기재발생고장시적전압수출파형,전류류향급기해파특성적기출상제출료일충정위고장기건적방법。차방법가위급련식역변기고장분석화용여설계작삼고화이론기출。
Cascaded H-bridges inverter has become more and more popular in recent years because it can satisfy high voltage and power applications with medium volume semiconductors. However, using more semiconductors than traditional inverters would increase the fault possibility, which restricts its application in some occasion. The basic unit of cascaded H-bridges inverter （namely, single-phase full-bridge inverter） was discussed with classification of its inner faults. The output voltage, current direction as well as harmonic characteristics were analyzed. Then a fault detection and location method is proposed which could be used as the reference of fault analysis and redundancy design for cascaded H-bridges inverter.