Wind turbine to charge 12V batteries

AI Thread Summary
The discussion centers on the feasibility of using a 24-volt PMG to charge a 12-volt battery bank, given the low wind conditions experienced by the user. It is noted that most wind generators require winds of at least 15 knots to produce significant power, and the user's turbine often only generates around 11 volts. Concerns are raised about the charge controller's ability to operate effectively with the low voltage output from the 12-volt turbine, suggesting that a more advanced controller may be necessary for a wider input voltage range. Ultimately, participants express skepticism about the viability of the wind turbine investment due to insufficient wind conditions. The consensus indicates that without adequate wind, pursuing this setup may not be cost-effective.
MAGGIE55
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I have a mws freedom pmg 12 volt 1600 watt PMG with falcon mach 3 blades. Live in city so turbine is only 12ft off ground. Don't get good wind. Can I use a 24 volt pmg to charge my 12 volt battery bank? Have charge controller that can handle high voltage and will dump at 14.5 volts. Also have 600 watt 10.8-30 volt GTI and 1000 watt 22-60 volt GTI. If I make to much power I could divert power to batteries and GTI's at same time. Will this work ?
 
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What voltage will the charge controller operate down to? Is the charge controller dropping out a lot of the time because the voltage from the 12V pmg is too low?
 
Independent of the voltage question, most wind generators don't make much power until the wind is 15 knots or more. Before investing a lot of money, you should ask yourself, "Do I have enough wind to make this pay?"
 
CWatters said:
What voltage will the charge controller operate down to? Is the charge controller dropping out a lot of the time because the voltage from the 12V pmg is too low?
Here is the kind of controller I have High amp rating: 440 amps, 10,000 watts.
s-l140.jpg
 
anorlunda said:
Independent of the voltage question, most wind generators don't make much power until the wind is 15 knots or more. Before investing a lot of money, you should ask yourself, "Do I have enough wind to make this pay?"
Most of time wind is Not over 12 mph until we have thunder storm. On average only 11 volts coming from 12 volt turbine. Have seen 22 volts in 50 mph gust but only for short time.
 
MAGGIE55 said:
Most of time wind is Not over 12 mph

That's too bad. In that case, I'm afraid you are wasting your time and money.
 
There doesn't seem to be much tech data available on the charge controller here...

http://store.mwands.com/combination-wind-solar-hybrid-charge-controllers/12-volt-wind-and-solar-charge-controller-w/led-display-1200-watt-divert-load/

It looks like it will only charge a 12v battery if the input voltage is in a narrow range. So I don't think switching to a 24v generator will work. I suspect you would need a more advanced charge controller that has a dc-dc converter in it that will charge a 12v battery from a wider range of input voltages including less than 12v.

I'm inclined to agree with anorlunda that you might be wasting money.
 
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