Problem: that wind power does not debit

[dedeleco]

Individually. There's nothing scientific.

magnets / coils

uh !!

Inside, individually hidden, magnets / coils, 200 years ago of scientific studies, Ampère, Faraday, Maxwell, etc ... then, relativity, Einstein, etc ... (induction is relativistic in v / c !!!)

[plasmanu]

Yes dedicated
If we look deep.
But everyone has a self-powered coil and rotox alternator on their car.
And as in the present case. Anyone can use a voltmeter to measure 14v without having been to school.
To find out if it charges a 12v battery.

Do not look complicated when it's simple: well, often ...

[dedeleco]

Most of the objects we use are deceptively simple, with a lot of study and development over a century sometimes.

Otherwise, the solution to recover the energy of a whimsical wind turbine with variable voltages between 4V and 70V, often unsuitable and badly used, to have only one almost almost fixed voltage, much better usable, is this type of power:

https://www.econologie.com/forums/post234181.html#234181

The solution, just copy, Understanding nonetheless.

One study that did the work of developing this type of power supply to 4V 70V,:

http://digitalcommons.calpoly.edu/cgi/v ... ntext=eesp

designed to recover energy physque an exercise bike when braking.


Other information about the LM5118:
http://www.mikrocontroller.net/attachme ... LM5118.pdf
http://www.epdonthenet.net/article/1642 ... input.aspx
http://www.ti.com/lit/ds/symlink/lm5118.pdf

Create an efficient buck-boost converter That ADAPTS to input voltage range from ~ 3.8V to 70V,
and outputs 13.7V DC, the voltage required by a load controller to charge battery

The converter shoulds help Reduce the net power consumption of the exercise machine
used in the Cal Poly gym

Even tinkering simply:

[plasmanu]

It is a rectifier with stabilized output voltage
For 150w maxi on the bike is more than 10A Under 13v pass
More
Audela ca will grill around 500w without electronics of suitable and expensive power.

[dedeleco]

The power is only that of the external transistor, cheap at less than 100V and therefore easy to increase, with good radiator.

So no serious problem.

These are the same MOSFET transistors, not very expensive, as in GTIs and other converters.

It is not a rectifier at all, but a switching buck-boost converter or power supply.

This type of idea, for lack of knowledge in electronics, makes that it is not commercial, because a little particular, with a market not important enough and therefore one prefers the scams which bring back much more, at the manufacturers of small wind turbines , who are not electronic specialists !!!

See the advertisement of Windeo which constantly pollutes econology !!!

[dedeleco]

The output power is free at the desired value by adapting the external MOSFET output transistor with large radiator, with a large choke with large wire, advantage of the LM5118 which leaves it free.

[Forhorse]

It is very beautiful but the LM5118 is difficult to find in France at the usual resellers, it must be ordered in the USA
Another problem: the box is in TSSOP, which is difficult to weld without specific equipment or CMS experience
It is a good track for a motivated connoisseur, but for someone who has no experience in electronics it is a bit hard to start!

[dedeleco]

I can't help it if a lot of wind turbines, only give at best 1/5 of their promises, sending in the wind at best 80%, 90% or even 100% of their energy !!
These are real scams !!

I can not help it if this type of converter which recovers this lost energy, does not sell and is not found, all done, to connect in 30 seconds !!

One reason is that the industry almost never needs to convert a very variable voltage between 3V and 70V to 100V, into a single, almost fixed voltage !!

So, if you want to recover this 80% of lost energy, it is necessary to conceive it and realize it, which especially requires the ability to think, learn and carry out in a scientific, logical way, to avoid errors by repeatedly craming the circuits unnecessarily, as some do who go for it without thinking enough !!

So first you need this ability to learn basic information, find your bearings and reason, avoiding errors, then you need an oscilloscope, to see what is going on, then you have to like to carry out projects not completely obvious and trivial, which require learning what we do not know enough !!


If you are afraid of a small millipede you can do the same with just a few op qmpli or use the LM1578A / LM2578A / LM3578A or the LM2577 Switching Regulator, among the various possibilities

http://www.futurlec.com/Linear/LM2578AN.shtml

Much simpler and therefore without a small millipede case, and which allows you to achieve almost the same buck boost converter !!!

The output voltage does not need to be very stable which makes it very simple, but this simple possibility is never taken into account in the industry.

But you have to invest a minimum seriously.

[Ruthenian]

There is the following adapter for the stand:

http://radiospares-fr.rs-online.com/web ... p/7419417/

The range of 3.8 V to 70 V unfortunately does not suit me.

[dedeleco]

There are all kinds of MOSFETs, even up to 500V, so you can have higher voltages, by separating the control system, power transistors, switches.
But there is more development work.
But the fact that one does not want a highly regulated output voltage, just 10% to 20% is enough, should simplify the control system.