There was an article floating online from a guy who builds electric boats that uses the inverter from the honda ima system as a speed controller. Its max was 600 amps, 600 volts and worked either ac or dc 3 phase motors. I got one, but the project is on the back burner at the moment. I only paid like 100 bucks on ebay for the whole thing and they guy threw in the dc to dc converter too that provides 12 volt power to the vehicle it came from.
