Why doesn't my windmill generator seem to charge the batteries?
I figured Id post here because I have no one to ask and answers aren't obvious from googling.
The connection is as follows:
- (0 Volts to 40 Volts open voltage) Windmill to a 12 Volt Battery.
- (0 Volts to 20 Volts open voltage) Solar Panel to a 12 Volt Battery.
A solar panel has an open voltage @ 19.95 Vdc and delivering 0 amps. The panel is not connected.
Then I connect the panel to the 12 Volt Battery. Now, the solar panel now shows a voltage of 14 V and delivering 2 amps into the battery.
That makes sense to me. When connecting the solar panel to the battery, the system is now "on load", so the voltage drops. But because the voltage drops, the amperage is being sent into the battery.
Now, The windmill has an open voltage between 0 and 40 vdc. On average it shows 20 volts when spinning.
40 volts when its faster. Its known that it takes 14.1 volts to start charging a battery.
So, now lets assume the windmill is spinning @ 40 volts open voltage.
I connect the windmill to the battery. For under a second, I see amperage go from the windmill to the battery.
The amperage amount is 3 amps for 1/4 a second, 0.6 2/4 of a second, then eventually 0.
The voltage after connecting the windmill to the battery is the same as the battery voltage. In my eyes, its not charging the battery, because amperage dropped to 0.
As a side note, as soon as I connect the windmill to the battery, the generator/turbine, also slows down in speed.
I am also curious to know why it is slowing down as well.
Anyone have any ideas?