一种三电平NPC逆变器四桥臂故障容错拓扑

基金项目:

国家安全监管总局2015安全生产重大事故防治关键技术科技项目(shandong-0056-2015AQ)

滨州学院青年人才创新工程科研基金项目(BZXYQNLG201204)

详细信息

A fault-tolerance topology of three-level four-leg NPC inverter

摘要: 针对逆变器的器件故障较难准确定位的问题，提出一种三电平NPC逆变器四桥臂故障容错拓扑。利用该拓扑改变时使用的开关器件可对逆变器器件短路或开路故障进行准确定位，从而为逆变器的容错控制提供依据。该拓扑可实现半桥臂替换，最多可对逆变器3个桥臂同时进行容错控制。
- 三电平逆变器 /
- 容错控制 /
- 半桥臂替换 /
- 四桥臂
Abstract: In view of problem that it is difficult to accurately locate device failure of inverter, a fault tolerance topology of three-level four-leg NPC inverter was proposed. In the topology, short-circuit fault and open-circuit fault can be located accurately by switching device used when topology changes, so as to provide a basis for fault-tolerant control of inverter. The topology enables half-leg replacement, and can achieve fault-tolerant control of up to three inverter legs at the same time.
- three-level inverter /
- fault-tolerant control /
- replacement of half-leg /
- four-leg