Quote:
Originally Posted by Roche
Would I be right in saying that this is less about sudden, large, temperature rise and more about sudden (and possibly sustained), large current drain?
|
I think it is important on 50/50 current and temperature three actions:
1sudden overload=current rise=temperature rise (series motor take huge current even with slow motion temperature on mosfets rise very quickly especially if you have only ten mosfets)
2,then/or
sudden blown up mosfets cause shortcircuit/sticking drain and source=current rise out of control=motor run out of control (only main contactor can stop motor)
or
3environment temperature rise = boiling mosfets (very sunny day, traffic jam often starts and stops)
then 2