Operation Principle - Kemppi MasterTig AC/DC 2000 Service Manual

Operation principle

T001
When the chosen current type is AC, then the IGBTs V5 and V6 are conductive one at a time,
with 50...200 Hz frequency.
Block diagram
Primary
rectifying
EMI-filt.
Cooling unit
control card
A005
M
P
R001
T003
V5
U
G5
V4
V6
Primary Main
inverter transformer
Filtering
Primary inverter
control card
A002
P001
TIG
Spark transformer
Sec. Sec.
rectifying inverter
Sec. Inverter
Spark card
Control card
A003
A004
14