[MPaulHolmes]

Originally Posted by dcb

Well this one is like $60 shipped
PRX - IGBT CM600HA-24H Power Module 1200V 600A - eBay (item 290049066472 end time Apr-27-09 14:17:07 PDT)

I guess the "dual" response would be, how much efficiency gain are we talking about, and is it only at full throttle, vs cost/complications, ya know. Is it good enough to get started with, kinda sounds like it will handle 48 volts 300+ amps no problem. Throw some pwm at it and monitor the current I recon.

Also the synch gains are probably frequency dependent.

I used to have 4 of those. Instead of making a controller, I hawked them on Ebay! They are the older ones, that can't really switch much above 8KHz. Lee Hart said that they need to be derated to 1/3 (continuous??? I forgot) of their current rating. The Tesla guy used some IGBTs in his homemade controller for his electric Porsche.