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Old 12-09-2016, 09:56 PM   #2902 (permalink)
MPaulHolmes
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Quote:
Originally Posted by arber333 View Post
Well i am almost there and luckily i remembered...

When i couldnt install PCB one way, due to current sensors, i rotated it so i now have IGBT contacts facing backwards. Eg. G1 E1 on IGBT is now G2 E2 on PCB and vice versa. Please advise Paul. Would that cause harm to IGBTs? Or is the switching so symetrical nothing would happen.
First picture is with contacts connected. On the second i tried to criss cross them so they would plug in ok. Which would be better?

Also is the wire length important? I made twisted wire, but with crossed cables wire length is more than i planned. at least for comfortable installation. Would wire length be an issue? Should i add one TVS diode directly to IGBT GE contacts? Wire length is now 10cm from PCB to GE.

Arber
Make sure they are crossed. One drives the high side and one the low side. Right now the high side is plugged into the low side and vice versa. That would be very bad. very very very bad.

So, as long as the IGBT on the right and the middle one have the current sensors, it should be OK.
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Last edited by MPaulHolmes; 12-09-2016 at 10:01 PM..
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