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Current Control in smps Welding Machine

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Tahmid

Tahmid

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welding machine

Hi,
I have made an smps Arc welding machine with max.150A and 50v no load. For current control, I used primary side phase control with Pic Micro controller. It is still in testing process. Can anybody suggest better process for controlling current without reducing voltage as a certain level of voltage is required for creating welding arc and current control is required for welding different size of materials. Thanks.
 

arc welding smps

Instead of using a small shunt resistor, you could also consider using a hall-effect sensor. This sensor would have no drop in output voltage, but will be a bit more expensive to implement in the design.
 

current controlled and voltage conrrolled in smps

Do you really mean the voltage drop across resistor bridge with shunt?
 
You might try to use some welding machine parts for your project. You might try to go to some junk shop, ask them if they have a junk welding machine, then if they have, you could take it for your project.pacquiao vs clottey live
 
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