1500 W wind problem 24VDC

[Ruthenian]

Bonjour,

What is a rac wind (X)?

For the gear or the belt, it will be complicated to adapt especially since it does not solve my problem of big vibration to deccelration or acceleration?

Apart from Futuenergy, are there other more affordable brands.

To go well, I started on a production of 150 W to 270 W on the widest possible range of wind.

[dedeleco]

What is a rac wind (X)?

it's square root of 3,74 equals 1,93 (in plain text 1,93 x 1,93 = 3,74.

Given the knowledge to assimilate to tinker and mount cheap his wind turbine that works, I advise you to pay more for a guaranteed wind turbine from a trusted French supplier who respects his commitments at least for fear of a lawsuit !!
Especially to connect to the EDF network. who demands much more, with a certified pro to connect.

On the internet, you have to feel the insufficient muddy information that makes you flee, as soon as you locate a minimum.

[Ruthenian]

Especially to connect to the EDF network. who demands much more, with a certified pro to connect.

On the internet, you have to feel the insufficient muddy information that makes you flee, as soon as you locate a minimum.

Personal network.

For intern, and ok but alas it is the same in France.

This is why I gather the maximum of info now that I have been had!

Even in France, the lawsuit would be lost because the seller never stipulated how fast 1500W.

[dedeleco]

Even in France, the lawsuit would be lost because the seller never stipulated how fast 1500W

if it is with a wind worthy of a cyclone encountered almost never (110Km / h, or even more) and not with 24V but with 90V then, the trial would be won, after expert appraisals, much more expensive than the wind turbine !!

You are right to inquire as much as possible, and also ask to see one or more who walk in low wind with the opinion of users.

But you can try to make the alternator run faster with a belt from a car, a washing machine, or with gears recovered from a gearbox in the case of a motorcycle, scooter or small car.

A direct alternator with slow wind turbine must have a very large number of magnets, therefore on a large diameter.
on econology there is an example with windtronics of memory.
http://www.ecolia-energies.com/eolienne ... onics.html
https://www.econologie.com/forums/post197424.html#197424
and then the price increases as the number of magnets and copper coils increases.

[Ruthenian]

Dedeleco, you seem to master induction and magnetic fields.

I guess you made your own wind turbine.
If yes, what type is it?

For my problem, I have either the solution of rewinding the stator with wire of smaller section, or to tinker with a transmission by gear or belt with increased losses.

Can you explain the concept of cogging, kézako? Is that the couple?

[Forhorse]

With 5 ohms of single-phase internal resistance of the windings (measured at standstill) it's a pure scam !!
For 24V to be charged, 48V must be empty, which with 5 Ohms gives the maximum external power 24Vx24V / 5 = 115Watts maximum with as much dissipated in the coils !!!

Except that it is the resistance measured at standstill. What matters is the impedance in operation ... yes it is an alternator, the frequency of the current influences this impedance.
The calculation is a bit too simplistic to demonstrate the presumed
"scam"
But hey, we agree, there is a problem with this wind turbine.

[dedeleco]

The frequency is low (low speed of rotation), the inductances are low (few turns), even with the iron armature not essential with these magnets, and therefore a weak effect which also increases the impedance (| R plus inductance |> R) apparent and therefore correction which does not change much at the conclusion R static too high for 24V.

[Ruthenian]

Regarding the scam, I think the question no longer arises.
Now I have to try to restore the machine, especially the alternator for now.

How do you advise me to do it?

As an inverter starts at 10.8 V, it is better to plan to do the calculations at 12 V or 24 V knowing that the voltage is proportional to the speed of rotation of the blades.

[dedeleco]

For the law of induction in physicist, it is enough to know Faraday in 1830 and Maxwell (in 1863), who are at the origin of all our current technology and even in foundation of all relativistic and quantum physics !!!

Can you explain the concept of cogging, kézako? Is that the couple?

It is the attraction between the magnets and the iron frame which gives periodic strokes depending on the position, because this frame is not uniform.

Otherwise, I would tend to measure the exact characteristics of the no-load alternator V as a function of its speed, current under load, power delivered as a function of load.
Same for the wind turbine at different wind speeds, speed depending on the torque required (brake with balance wheel with various counterweights).
Then it is possible to determine what is the optimal coupling between the two, the necessary reduction, belt or gears recovered elsewhere.

The calculations only come after these measurements, otherwise there is a risk of being wrong !!!
My impression is that this alternator will give good power at much higher voltage close to 90V and therefore we must build either its inverter or its power transformer.

Rewinding may not solve anything, not enough magnets. Reducing the wire cross-section quickly increases the resistance, increases the no-load voltage at a given speed and therefore decreases the possible power of the alternator at a given voltage such as 12V or 24V.

It is better to measure everything before any action to avoid staying in the shoe polish with incorrect decisions for lack of information.

[Ruthenian]

Hello,

If I may, you forgot two basic laws:
Kirchhoff's laws.

For the problems of adaptations, we are not going to type calculations of the signal processing, analysis and Fourier transform style ...
Since, if there is a created wave, there is propagation.

Anyway, practice often has nothing to do with theory.

Thank you for the explanations of cogging, so I have great news my vibrations and my scrap metal noise are a function of this cogging.

The alternator on the Forhorse or Looping wind turbine is not by chance from the Alxion brand.

I will try to take the curves of my alternator.

By the way, Mr. Missouri is not shy, he sent me an invoice for the purchase of a renegade PMA !!! I asked her helicopter to cancel. What he did.