基于输入电流的牵引变流器开关管开路故障诊断方法

陈怡恬,陈特放,成庶,陈高华,王晗

Input Current-Based Diagnosis Scheme for Power Transistor Open-Circuit Faultin Traction Converter

Yitian Chen,Tefang Chen,Shu Cheng,Gaohua Chen,Han Wang

表6 第一阶段故障编码表

Tab.6 Fault diagnosis encode table in the first phase

故障管周期 δ -δ′ 变量 T1 T2 T3 T4 T1 T2 T3 T4 正常 10 00 01 00 10 10 00 10 VD2 00 00 00 00 00 00 00 00 VD1 00 00 00 00 00 00 00 00 VT6 00 00 01 00 10 10 00 10 VT5 10 00 00 00 10 10 10 10 VD4 10 00 00 00 10 00 00 00 VD3 00 00 01 00 00 00 00 00