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2
故障诊断表
Tab.2
Fault diagnosis table
故障管周期
i
1
i
2
电流
T
1
T
2
T
3
T
4
T
1
T
2
T
3
T
4
正常
+
-
-
+
+
-
-
+
VT
4
+
-
-
+
+
-
-
+
VT
3
+
-
-
+
+
-
-
+
VT
1
+
-
-
+
+
0
-
+
VT
2
+
-
-
+
+
-
-
0
VD
2
+
-
-
+
+
+
0
+
VD
1
+
-
-
+
0
-
-
-
VT
6
0
-
-
0
+
-
-
+
VT
5
+
0
0
+
+
-
-
+
VD
4
+
0
0
+
+
-
-
+
VD
3
0
-
0
+
-
-
+