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A project log for S3P ~ supercaps and solar panels ~

The powersolution for your trip to the wilderness!!

kirschner-christophKirschner Christoph 03/30/2017 at 17:014 Comments

Discussions

Stefan-Xp wrote 03/30/2017 at 20:33 point

Hmmm... why haven't you put one more super cap in parallel to the SunPanel? I calculated about 40% more power storage - and you might even use lower voltages with the 5V voltage regulator only to power USB devices and save on Capacity..

Have you done some research on step down converters? (I didn't but Efficiency >90% might be doable)

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Kirschner Christoph wrote 03/30/2017 at 21:00 point

i had them first in parallel to the panel but i was afraid to overcharge them :D yeah you are right that would be better, but for now i have only 6 caps (6*2,7 = 16,2).. What do you mean with the voltageregulator ? The Problem is I need 12 V for the DC-motor to run smooth .. And i think the efficency of one of those modules is allways better than the one from the arduino ( to power it and the servo ) ..

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Stefan-Xp wrote 03/30/2017 at 21:30 point

I thought you bought the supercaps recently, so maybe there was a posibility to get one more (=18,9V) to cover the maximum Rating of the Solar panel.

For DCDC conversion there are so many options... it greatly depends on Application. 

Maybe if the Supercaps were in parallel to the solar panel you might be able to switch off the whole 12V Branch and only use one 5V Voltage converter (But watch out for thermal overload)

I anyhow like your project.

Best regards, Stefan

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Kirschner Christoph wrote 03/31/2017 at 04:06 point

i bought them from China and they took so long to arrive .. 

The thing with the 12 V branch is that I need it for powering of my DC motor :D

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