charging ev with solar alternator battery dc to ac convertor
Submitted by lcalarea47 on Wed, 07/23/2008 - 17:50
comments needed pro and con . im trying this , i have small dc motor which 3 15 watt solar panels in sunlight spin motor just fine direct , running to wired alternator via belt wire to 12 volt battery then to dc to ac convertor which could handle my 10 small 12 volt chargers 4 amps ..???????????? trying here , perhaps reaching on this ,,,, lonnie
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Re: charging ev with solar alternator battery dc to ac convertor
Why the motor and alternator? Why not just charge the batteries directly from the solar panels? The motor/alternator are nothing but loss. If the voltage is wrong, get the correct voltage panels or a DC-DC converter. It would be much more effecient than a motor-alternator.
Re: charging ev with solar alternator battery dc to ac convertor
cuz you'll loose the whole Rube Goldberg effect.
XM-3000...
-DC-DC converter replaced with a Dell D220P-01 power supply.
-72V mod
-Expensive bank charger until I come up with something better... Still trying.
-
Re: charging ev with solar alternator battery dc to ac convertor
Ah.. that explains why I got so confused with the explanation...
- David Herron, The Long Tail Pipe, davidherron.com, 7gen.com, What is Reiki
Re: charging ev with solar alternator battery dc to ac convertor
hi thx 4 reply .reson in part is i got 10 12 volt batteries connected in series 120 volts plus running ev ,,only can run wire 1 panel to each battery [believe if in series can not wire to 2 batteries from one panel . ]and have seperate charger to each battery ,did that to save money for now on price of 120 volt charger ,plus i may bump up to 144 volts . ,have room on roof for like 6 panels [which i allready have here ] ,, was trying to increase panels output ..MACGYVER HERE lonnie
ac dc ev
Re: charging ev with solar alternator battery dc to ac convertor
Hmm.. I'm not exactly a solar expert but have been doing a bit of studying recently. It seems the battery pack could be arranged with 10 12v batteries in parallel for a 12v pack total. And that multiple panels can also be connected in parallel. And that panels generally are in the 15v range making them suitable to directly charge a 12v battery pack. The solar panel suppliers I've looked at offer charge controllers which might be assuming a similar arrangement to what I just described.
I understand the normal arrangement is:-
Panels (in parallel) >>>> Charge controller >>>> Batteries (in parallel) >>>> Inverter
A grid-tied system would be slightly differently arranged.
- David Herron, The Long Tail Pipe, davidherron.com, 7gen.com, What is Reiki
Re: charging ev with solar alternator battery dc to ac convertor
NO,what you proposed will not work! You do not have a powerful enough collection of 12 to 16 volt solar panels, with only 45 watts available, because the most charging current you could hope for, using this to charge 10 batteries of 12 volts each, is about 300 milliamperes, which would require over 100 hours of perfect sunlight, to charge 10 batteries of 30AH rating! Get a much bigger/more powerful solar array, about 750 watts or more, if you hope to charge them about as fast as your existing charger does. (Keep in mind, most locations have few "Perfect Sun" days, so use of a panel of at least double this size is advised, if you are serious about solar charging, and including a battery bank with the solar array will enable saving energy captured when vehicle charging is not needed.)--No, it is not easy or cheap!-Bob
Robert M. Curry