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RE: DRSSTC Primary Circuit Feedback Control



Original poster: "McCauley, Daniel H" <daniel.h.mccauley@xxxxxxxx>


I have to add that with my current set-up, i can run the coil for long periods of times and the IGBTs / heatsink are still cool to the touch.

Dan


>The models (not real confident in the numbers..) say the IGBTs will do >about 40 watts of heat as is. But with "perfect" zero cross >switching, >that goes down to 1.2 watts!! This is no different than any other >switching resonant thing and they are all using "little" FETS and >IGBTs... We just have to refine ours... I also seem to be >able to keep >the peak primary currents at just 80 amps which is trivial for the >IGBTs. Almost could use FETs again... > >Cheers, > > Terry > > >