Calculating coil parameters based on required voltage and amps.
Calculating coil parameters based on required voltage and amps.
(OP)
Hi everyone,
First post :)
I am currently designing a small wind turbine and was wondering if there is some sort of formula which can be applied to calculating a coils inner and outer diameter, thickness, amount of turns and gauge based on the voltage and amperage I need.
I am wanting to have either 24 (± 10%?) or 48 (± 5%?) volts and preferably between 5 - 10 amps.
I would think that it would have to do something with the strength of the rotor magnets as well, the ones I found are class N50 neodymium magnets, which I am told are ideal for turbines due to the incredible strength.
The turbine I am making is designed to accommodate 3 coils, for 3 phase AC power.
I am told 3 phase is most efficient, so that's why, but since it's going to be rectified so that it can be stored in a battery bank, is it worth it having 3 phase?
I've made the design a "VAWT", just want to test out how efficient it will be :)
Thanks!
Dano
First post :)
I am currently designing a small wind turbine and was wondering if there is some sort of formula which can be applied to calculating a coils inner and outer diameter, thickness, amount of turns and gauge based on the voltage and amperage I need.
I am wanting to have either 24 (± 10%?) or 48 (± 5%?) volts and preferably between 5 - 10 amps.
I would think that it would have to do something with the strength of the rotor magnets as well, the ones I found are class N50 neodymium magnets, which I am told are ideal for turbines due to the incredible strength.
The turbine I am making is designed to accommodate 3 coils, for 3 phase AC power.
I am told 3 phase is most efficient, so that's why, but since it's going to be rectified so that it can be stored in a battery bank, is it worth it having 3 phase?
I've made the design a "VAWT", just want to test out how efficient it will be :)
Thanks!
Dano





RE: Calculating coil parameters based on required voltage and amps.
Try reading the wind info at www.otherpower.com if you still don't get it.
RE: Calculating coil parameters based on required voltage and amps.
But, surely there is a formula based on the magnetic field strength of the magnet and desired voltage to find the diameter of the coil and how many windings and what gauge? Or am I mistaken?
Thanks!
Dano
RE: Calculating coil parameters based on required voltage and amps.
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If we learn from our mistakes I'm getting a great education!
RE: Calculating coil parameters based on required voltage and amps.
Really, you should go to otherpower. They are the leading source on the internet for trailing edge technology. It doesnt bode well for the future of RE when a group like this can't give up using 1920's techno;ogy.
RE: Calculating coil parameters based on required voltage and amps.
Then look at the effect of an air gap in the magnetic circuit.
Investigate the effect of speed on the voltage induced in a wire moving in a magnetic field.
Then design the magnetic circuit. Determine how the dimensions of a coil that will fit in the space that you have provided for windings.
Repeat this process until you find a solution that you are happy with.
There are a lot of formulas, some rules of thumb and a lot of trial and error in a design such as yours.
Bill
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"Why not the best?"
Jimmy Carter
RE: Calculating coil parameters based on required voltage and amps.
RE: Calculating coil parameters based on required voltage and amps.
Thanks guys! :)
As for the speed of the voltage are you talking about the current or something else? I've never heard of voltage having different speeds, if so what is the unit?
Thanks!
Dano
RE: Calculating coil parameters based on required voltage and amps.
RE: Calculating coil parameters based on required voltage and amps.