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Small scale solar MPPT wins 21% | 47 comments (47 topical, 0 editorial)

Re: Small scale solar MPPT wins 21% (3.00 / 0) (#16)
by tecker on Fri Aug 29th, 2008 at 07:32:44 AM MST
(User Info)

I 've been messin around with the buck, boost, Cuk for a while. I won't steel the tread you have going .I got some stuff to put up later. Mosty about buckin down X10 limited current voltages to get the current for lower voltage devices and storage .
A thing to remember here is battery impedance. They have much slower return voltage times if you hold that voltage two to 4 volts above ,the electrolyte stores the charge without a lot of heat(if the batteries are good)factor batteries or the battery bank into your circuit where the bias is good for switching I ran across this .In this PDF are a good explanations of switching copper to do this and more. They talk about a charge pump .It's more static than coil functions but looks interesting . Food for clarity anyway.
http://www.jaycar.com.au/images_uploaded/dcdcconv.pdf I also uploaded a Doc file with buck boost calculations.
http://www.otherpower.com/images/scimages/1431/buck_boost_basics.pdf
Good stuff hang in there.

Re: Small scale solar MPPT wins 21% (3.00 / 0) (#21)
by elt on Mon Sep 1st, 2008 at 06:49:14 PM MST
(User Info)

I'm going to have to figure out whether a regular buck or a cuk is better (or if it matters) for converting high current and voltage levels down to battery volts on my windmill ... any thoughts on that?

Thank you,
- Ed.

[ Parent ]

Re: Small scale solar MPPT wins 21% (3.00 / 0) (#23)
by tecker on Thu Sep 4th, 2008 at 07:57:15 PM MST
(User Info)

I think I got some stuff that will be easy enough to setup .I'm back on the axil for a week or so .

[ Parent ]

Re: Small scale solar MPPT wins 21% (3.00 / 0) (#22)
by boB on Mon Sep 1st, 2008 at 09:32:22 PM MST
(User Info) http://bob.gudgel.org

>>http://www.otherpower.com/images/scimages/1431/buck_boost_basics.pdf

Some interesting stuff in there, but they got the output polarity of the Buck-Boost
backwards (it inverts) and the output diode is labeled as an "L" on more than one schematic. (cut and paste errors I'm sure)

boB

[ Parent ]

Small scale solar MPPT wins 21% | 47 comments (47 topical, 0 editorial)

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