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OK, so I had 2 problems: I took way too long to solder to the bus bars last time. And my crappy 24v motor really didn't like running at 120v or so. A mosfet failed during testing I think because it was damaged. Since then, I've changed the soldering process, so that it just gets dropped right onto the bar while the bar is still at solder temp, and then immediately transferred to a water bath. The datasheet says to keep things under 500 degF for less than 10 seconds, and I can do it in like 6 seconds or so. It worked when I did the new faster soldering way. Also, I found out that the noise I thought was a problem was just the stupid scope probe picking up the noise from mosfet turn-on.
Also, I just finished drilling the AC controller baseplate, and am now doing the G-Code for the 3 phases. I'm first going to use crappy igbts, and then remove them, and add good ones once the code is well tested.
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