Howdy evmaker, very nice project you have going there.
http://arduino.cc/forum/index.php/topic,128734.0.html <This gentleman is also trying to change that same thing I believe.
Your project looks like a lot of fun, the company I am working for designs drive systems for trains, buses, boats and cars.
I see alot of IGBT's of various sizes, and I have also seen plenty of examples of the magic smoke being released inside our drive enclosures. Its no fun to have to clean one of those rma's =(