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7 第二阶段故障编码表

Tab.7 Fault diagnosis encode table in the second phase

故障管周期 δ -δ′ 变量 T1 T2 T3 T4 T1 T2 T3 T4 正常 00 01 00 10 10 00 00 10 VT1 00 01 01 10 10 00 00 10 VT2 10 01 10 10 10 00 00 10 VD2 00 01 01 10 10 00 00 10 VD1 10 01 10 10 10 00 00 10 VT6 01 01 00 00 10 00 00 10 VT5 00 00 10 10 10 10 10 10 VD4 00 00 10 10 10 00 00 10 VD3 01 01 00 00 00 00 00 00