Electronics > Beginners
Component role in a circuit.
xavier60:
"This means, that top and bottom IGBTs are switched in phase."
Yes.
"At this stage, the return diodes are not yet conducting?"
yes. The voltage rise across the IGBTs is very fast to half HVDC because there is more than 1/3 of the output welding current charging the capacitors, 40A or more.
After that, the current will just be the very low magnetizing current.
I figure that the capacitors add about 50ns delay in the rise to half HVDC.
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