Had developed HF arc starter scheme and it worked fine until I accidentally pressed arc start push button when circuit was shorted (torch stick on work peace). After that all 4 IGBTs in my inverter blow up. Inverter uses full bridge output scheme built on FGH60N60 IGBTs.
Both L1 and T2 are massive (150mm in diameter) ferrite thoroids. HF arc module is like this
I think damage was due L1 saturation (short circuit), so it loosed reactive resistance vastly and high voltage leak to inverter, is this correct?, any suggestions?
Components was chosen based on availability..
Sorry for bad English
Both L1 and T2 are massive (150mm in diameter) ferrite thoroids. HF arc module is like this
I think damage was due L1 saturation (short circuit), so it loosed reactive resistance vastly and high voltage leak to inverter, is this correct?, any suggestions?
Components was chosen based on availability..
Sorry for bad English