Yes gate driver is the first to go after IGBT since it is shorted out.Kenny - yeah, I know. When I marked those bus bars it was because I was figuring their length for the installation as I did it. But you are right, and this is my first real experience with such high power devices. I will be re-building it more to the way it is described in Paul's design. Also though, Paul's design utilizes the center post of the IGBT, connecting it to the CAP Neg - although it's hard for me to understand why. But my setup didn't work at all until I made that connection. So he's actually using all three Posts.
But I got Paul's board, and it's set up with three IGBT's so that's what I have to work with. It's a pricey lesson, no doubt.
I'm still excited about it though. Right now I just want to know if I can use these:
Because it's a pretty good deal and it would cost about the same to replace the single IGBT I burned.
Diodes you are talking about are zener diodes. The reason why you would get +8V are two diodes after the filter transformer. They are there to cut the voltage from 24V to +15V / -8V.
Well if they are burned divider would behave differently now. I suggest you replace them as well.
You should just replace every semiconductor with this gate. Usually caps and resistors are ok, but diodes and transistors are risky.
Again i would recommend you ask Paul how to tweak HW overcurrent protection. Also you need to be sure what the current sensor setting is.
Usually that means changing current-sensor-amps-per-volt setting in serial interface. If it doesnt want to accept new value than this is out of scope in firmware. You will have to correct in firmware and upload it with Pickit3.
Allways backup previous version somewhere!