Re: hefty amps-- DC 24-48V @ 1kA supply

On Tue, 11 Mar 2008 07:13:08 -0700 (PDT), Bob <bob9@xxxxxxxxxxxxxx>
wrote:

On Mar 11, 1:43 pm, Spehro Pefhany <speffS...@xxxxxxxxxxxxxxxxxxxxxxx>
wrote:
I need a DC supply (could be split into 5 supplies of 1/5 the current)
that will handle a continuous current of 1000A total. So, 25-50kW,
roughly. Ripple at 60Hz should be < 2%, regulation and any HF hash
isn't too important.

Any ideas for something (relatively) available/affordable?

3-phase 480V/600VAC SMPS?
MG set?
diesel?

Best regards,
Spehro Pefhany

Since regulation isn't important how about a big stack of paralleled
lead acid batteries? Star topology wiring would probably be best.

Even expensive marine batteries will not supply that kind of current
for long.

Various manufacturers like lambda power and unipower-corp
make SMPSU modules that work in parallel.
Unipower TWRI series will do 9000 watts

Bob

That's interesting, thanks. Big bus bars I guess. Perhaps
$0.50-$1/watt?
Best regards,
Spehro Pefhany
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