Quote:
Originally Posted by vwdevotee
(I'm shooting for a 360V nominal pack in my car). Am I missing something that would make this technically infeasible assuming a PIC is used to control the PWM and the charger algorithm?
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nope! So what I have so far is just a buck stage, but adding a boost stage would allow for higher voltages. My test on a 12V battery was from 120VAC, while I'd have to run off of 240AC to charge my 144V pack. A boost stage would eliminate that.
Actually, instead of a simple boost stage, what I really want to do is add a PFC stage. It'll act a boost stage and boost any input voltage from 120 to 240AC to ~400VDC, but do so such that there is close to unity power factor. So it'll act as a boost stage, allow the user to plug into any outlet without having to flip a switch or something (maybe lower the power), and could charge higher voltage packs.
I think it'll be easy to add that later (famous last words) after the buck stage and charging algorithms are figured out.