基于直流电压波形的逆变器功率开关故障快速诊断方法

A fast diagnosis method for power switch open-circuit faults of half-bridge inverters with different topologies is proposed in this research. To begin with, the inverter dc voltage models of inverters are established based on the consideration of dc side inductance parameters. Next, the current paths of inverter under different switching states are analyzed, and the characteristics of dc voltage w...