verytricky
New Member
Hi,
I have a wind turbine.....
And it does not do exactly what I want, and I am trying to build a few things to improve matters.
One issue I have is that from time to time the voltage from the wind turbine dropps to just below the 42 volts that the inverter needs, so the inveter switches off. It takes a few minutes of 'sensing' for the inverter to produce lectricity again.
I had an idea, and I wondered how I would go about making it work.
I have a series of 12v batteries wired up to produce 48 volts. I already have these batteries. When the wind drops and the turbine produces less than the 42 volts the inverter needs, the battery bank switches in for the period of time that the voltage is too low. If the batteries get drained to 42 volts, the inverter switches off anyway - so I cant draw the batteries down too far. When the wind speed is high, I get in excess of 150 volts, and I can use that excess voltage in a circut to charge the batteries up during that period.
Typically the wind speed drops below the 42 volt range for only a few seconds at a time, but I 'loose' the next few minutes of generation whilst the inverter 'sences' the voltage is back.
Design issues:
There should be no 'feedback' of voltage to the batteries when the turbine generates between 50 to 150 volts. This results in a popped battery! I want to avoid that.
The switching should be as seamless as possible. If there is a break whilst the voltage is applied then the inverter will 'drop out' and the time delay will kick in.
The batteries should kick in if the voltage drops below 46 volts, but kick out if the voltage reaches 50 volts.
We can assume that by the time I build this I will have a stable DC signal, and not the current saw tooth voltage! So the period from when it switches on or off will be seconds/minutes apart, and not several times a second...
I have a wind turbine.....
And it does not do exactly what I want, and I am trying to build a few things to improve matters.
One issue I have is that from time to time the voltage from the wind turbine dropps to just below the 42 volts that the inverter needs, so the inveter switches off. It takes a few minutes of 'sensing' for the inverter to produce lectricity again.
I had an idea, and I wondered how I would go about making it work.
I have a series of 12v batteries wired up to produce 48 volts. I already have these batteries. When the wind drops and the turbine produces less than the 42 volts the inverter needs, the battery bank switches in for the period of time that the voltage is too low. If the batteries get drained to 42 volts, the inverter switches off anyway - so I cant draw the batteries down too far. When the wind speed is high, I get in excess of 150 volts, and I can use that excess voltage in a circut to charge the batteries up during that period.
Typically the wind speed drops below the 42 volt range for only a few seconds at a time, but I 'loose' the next few minutes of generation whilst the inverter 'sences' the voltage is back.
Design issues:
There should be no 'feedback' of voltage to the batteries when the turbine generates between 50 to 150 volts. This results in a popped battery! I want to avoid that.
The switching should be as seamless as possible. If there is a break whilst the voltage is applied then the inverter will 'drop out' and the time delay will kick in.
The batteries should kick in if the voltage drops below 46 volts, but kick out if the voltage reaches 50 volts.
We can assume that by the time I build this I will have a stable DC signal, and not the current saw tooth voltage! So the period from when it switches on or off will be seconds/minutes apart, and not several times a second...
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