48 volt regulator circuit
craigk
Registered Users Posts: 4 ✭
Hi Folks! have a 48 volt off-grid system, with an inverter. Some loads I run directly off the battery bank, such as the fridge. I would like to try to run a security system comprised of components that will run 48 volts. The issue is that the battery voltage varies between 49 to 59 volts. I wonder if anyone has experience with a small regulator circuit to control the battery bank voltage to get a regulated 48 volt supply?
Comments
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What you need is a "buck boost" DC to DC converter... The buck circuit drops voltage, and the boost circuit raises voltage. To get an output that outputs 48 VDC from 40-64 VDC, the buck boost is the way to go.
If you were running from 48 to 24 VDC, then a buck is all you need. If running from 24 to 48 vdc, then you need the boost.
Something like this buck/boost converters... However I am not finding any that run in the 48-60+ VDC range:
https://www.amazon.com/s?k=%2Bbuck+%2Bboost+dc+converter
https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=DC+to+DC+Power+Converter+Voltage+Converter+%2BBoost+%2Bbuck
Maybe somebody knows some off the self 48VDC DC to DC converters?
-BillNear San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset -
Also, look for DC-DC converters, you likely only need 50w or so?
Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister , -
Thanks Gentleman. I have seen circuits on Ebay and Aliexpress that look like they will do the job (250 watts or so) but I can't get a straight answer out of anyone when I inquire, so I guess I'll just have to try one. None of them specifically describe working when the input is nearly the same as the output.
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