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I assume the wind turbine and PV setups are all tied together? Did you build the WT yourself or was it purchased? Cost and output of the WT setup?
Yes, wind turbine and PV is tied together charging the same batteries. The wind turbine I purchased is a Proven WT2.5. It is on a 70' freestanding tower. Picked the the Proven for it's reputation of surviving harsh wind sites. I have a harsh wind site. Last January had a peak gust of 102.6 mph. The turbines peak output is 2800 watts @ 30 mph. Last January with a average wind speed of 15.6 it produced 636 KW hours. The cost, 18K doing all the work myself.
PV consist of 2200 watts of panels.
Between the PV and the wind, it produces more than enough to cover our loads. Also have 12KW propane generator for a backup.
Welcome to the forums. That's a lot of power. 24V I take it? how many AH of storage do you have?Originally Posted by offgrid
I see you running, tell me what your running from
Nobody's coming, what ya do that was so wrong.
48 volt system. The advantage to 48 over 24 is lower current, smaller gauge wire $, single series string of batteries.
1180 AH battery bank, 24-2volt cells. A nominal 50V's x 1180 = 59, 000 watts capacity. We use about 8 KW's a day. Battery bank gives us 3 day storage discharging down to 50%. Very rare to go 3 days w/o sun or wind.
This thread and another one got me thinking about a solar unit to charge batteries for power tools.
If the SHTF and your house is damaged power tools would let you fix your house up faster. Being able to charge the batteries for the tools off a solar powered battery system seems like a logical step to me.
Could the same set up be used for recharging cell phones, flashlights and AA or AAA batteries?
A small solar setup will absolutely work for charging you cordless tool batteries.
Get yourself a 100 watt panel, 12 volt charge controller, 150 AH battery, and a Pure Wave Sign inverter.
You can not use a modified sine-wave inverter. There is a high probability your battery chargers will not work or worse burn up your chargers.
You can start small with just a solar panel, charge controller and battery. Run a few lights in your house. You can get 12V lights at most RV/camper stores. You can use a 12V light in any standard lamp.
Yups I am also trying to design a solar power battery charger that won't overcharge batteries. I've worked out how to make a basic solar charger with solar panel, blocking diode, voltage regular, battery, but I can't figure out how to prevent the batteries from overcharging if I leave them out. I was thinking that an NPN transistor might be useful as a switch, but I don't know where to start.Any suggestions.
I got my own ideas for getting off the grid. About $5,000 will fix all my electric and car needs.
Who are you to want to escape a thugs bullet? That is only a personal prejudice, ( Atlas Shrugged)
"Those that don't watch the old media are uninformed, those that do watch the old media are misinformed." - Mark Twain
This is always the best way to build a battery bank for sure, as differences in battery internal resistance can cause havoc in larger Parallel Strings of batteries.
48 volts is a good battery bank voltage for wind turbine systems, with long cable runs out to the tower.
In larger electrical substations they use a 125-130Vdc battery system consisting of a large string of batteries that is center grounded for so if you touch a wire it is only + or - 65 VDC with respect to ground.
I have a high voltage dc grid tied solar system all planned out, when I have the money...
Well,The size of the battery bank required will depend on the storage capacity required, the maximum flow rate at maximum load and the minimum temperature at which the batteries will be used. The storage capacity of a battery, the amount of electrical energy, it can contain, is usually expressed in amperes hours.Series wiring refers to connecting batteries to increase volts but not amperes.
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