11-27-2007, 02:47 PM
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#396 (permalink)
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Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Bigmouse replies...
Quote:
Quote:
Originally Posted by MetroMPG 
What kind of controller specs are you aiming for?
With a small PWM circuit driving an IGBT, the capacity of the controller is dependant on the capacity of the IGBT, since that, and that alone is carrying the load of the motor (in theory). I ordered some 400A 1200V IGBT's on eBay. If I run two of them in parallel, I should have a capacity of 800A. The specs on the IGBT's are such that they will be able to handle the 16khz PWM frequency with no problem. And if not, they frequency is selectable with that chip. Really looks to be pretty simple. I hope it ends up being as simple in reality as it is in theory.
That MR2 project sounds very cool. I'm running megasquirt on my 1990 Audi Coupe Quattro with a turbo engine swap in it. Such an awesome little box that is.
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