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3 phase wind generator Answered

I am making a generator for me wind turbine and I have 12 neodymium magnets that are 50x25x10 size and 16 gauge enameled wire if you could tell me how many turns I would have to do in each coil and how many coils to do according to the 12 magnets and how much would generate the generator

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Josehf Murchison
Josehf Murchison

10 days ago

So you want to make an axial flux generator.
Axial flux generators are 3 and 4 combos so 4, 8, 12, or 16 magnets to 3, 6, 9, or 12 coils.
The magnets arranged, N, S, N, S, N, S, N, S, N, S, N, S, evenly spaced.
In most axial flux generators the coils of the stators are suspended in epoxy.
The phases of the coils should be arranged;
coil 1 phase 1,
coil 2 phase 2,
coil 3 phase 3,
coil 4 phase 1,
coil 5 phase 2,
coil 6 phase 3,
coil 7 phase 1,
coil 8 phase 2,
coil 9 phase 3, and so on around the stator.
After that it is gap, rpm, gauss of the magnets, and turns.

0
Orngrimm
Orngrimm

2 months ago

Dont bother with selfmade if you want some efficiency... See, it is not enough to have those materials. YAou will need a lot more custom parts like slotted metal cut to exactly the right shape, electronics (a lot). If you want it cheap and efficiency is not the utter most important factor, get a motor and use it as generator. Still: AC/AC-Converter or AC/DC-Converter is still needed. Both should feature MPP (Maximum Power Point)...

If your are dependent on efficiency, buy a generator off the shelf plus the electronics to it.

It is impossible to tell you the power of the generator as we dont know the size and efficiency of the wind turbine. If you know this, you can apply Betz' Law (Stating that one can only use max 59.3% of the potential kynetic energy in moving mass of wind) and go from the Kynetic energy-Formula (Ke = 0.5 * m * v^2) and rearrange it (See https://youtu.be/WG-vTc7SwU0?t=474 if you are interested in how to do this) to your problem and getting a formula for maximum possible power for a wind-turbine:
P = 0.5 * Rho * A * V^3 where Rho is 1.204kg/m^3m A is your area of the Turbine, V is windspeed in m/s.
applying Betz Law gives you basically P = 0.5 * Rho * A * V^3 * 0.593
There. This is the maximum power you can get from your turbine if all is really on the perfect side. And a selfmade generator is FAR from this.

If you want to make a selfmade generator, be sure to have almost no gaps. The magnets need to be VERY close to the coils/slotted steel laminates. 0.x mm if possible...
https://www.instructables.com/id/Rewinding-3-Phase-Motor/ from step 14 onwards to 40 is a good starter to calculate your stuff asked.
Check https://www.thebackshed.com/Windmill/Contents.asp section "The F&P Smartdrive" especially the part "Rewiring the
F&P stator
" for a possible build and further informations. It is way too much to explain all here in such a crappy Forumsoftware...