Hi everybody,
I have some question about mig.
I have designed MMA welding machine and it is working well, all things is wonderfull in MMA mode.
and then i want to design MIG machine and i changed control circuit because you know MMA is current control, MIG is Voltage control. And my circuit is same i only changed feedback side(When MMA mode, i take output current as feedback. when MIG mode, i take Output voltage as feedback). so i have some problems in this mode because sometimes my MIG machine's igbts explode.and i dont know why they explode..
may be i have to change control side but i dont know....
are there anybody to have any idea why it is exploding?
Thanks everybody.
I have some question about mig.
I have designed MMA welding machine and it is working well, all things is wonderfull in MMA mode.
and then i want to design MIG machine and i changed control circuit because you know MMA is current control, MIG is Voltage control. And my circuit is same i only changed feedback side(When MMA mode, i take output current as feedback. when MIG mode, i take Output voltage as feedback). so i have some problems in this mode because sometimes my MIG machine's igbts explode.and i dont know why they explode..
may be i have to change control side but i dont know....
are there anybody to have any idea why it is exploding?
Thanks everybody.