hey Steve,
Solar panels can be coupled series or parallel. If you buy smaller
power panels and hook them in series to obtain your 144v +charging
voltage, you can avoid any stepping up of voltage from the panels.
Because the output is in order with square surface area, you should be
able to keep with the same size by accepting a lower amperage output. I
know, the output is in watts. it is all in the configuration of the
panels. The panels I am working with can handle being set-up for 1000v.
Another thing you may look into is feeding capacitors to store some of
your juice.
Another train of thought is to use the DC to DC converter built into a
common inverter to step up to roughly 156v. All you would have to do is
tap into the capacitor bus in the inverter. I like the serial connected
panel idea best to avoid losses.
Kevin Pemberton
On 12/21/2011 10:27 AM, Steve D wrote:
> Solar power isn't something I know a whole lot about so I hope some
> can fill me in on a couple qustions and concerns. I'm planning on
> doing an install next year
> System:
> 144v Propulsion Pack at 210AH
> 12v House bank at 640AH fed from the Propulsion bank (144v to 12v)
> I want to add 2 maybe 3 210w solar panels on the davits. I of course
> would like to go to both the House and Propulsion banks once one or
> the other is fully charged and then anything still being generated at
> the solar panels is available to go to house "on" items. As far as I
> can tell I'd have to step up the output at the panels to 144v and go
> directly to the Propulsion bank then feed off it as usual however I
> haven't been able to find anything that would step the voltages up to
> 144v.
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