Questions about solar and wind regulators

[darwenn]

But car alternators have a built-in regulator, some of 50A, can't such a regulator be recovered and work for a wind turbine? .

My generator can output up to 30v, 30A (no load), in three-phase alternative as for a car alternator. So the regulator of an alternator will not work?

[elephant]

The regulation of a cheap charger could not be simpler: the transformer is calculated so that its internal resistance and its secondary voltage do all the work for, and the battery itself and the circuit breaker do the rest.

At the beginning, the battery pumps the maximum of what the internal resistance of the secondary winding allows and the charging is done at high current and low voltage.
As the charge intensity decreases, the voltage rises.

If the battery is too large or damaged, the circuit breaker does the rest .

[darwenn]

What about the regulator of a car alternator? Is it the same principle? unless, I suppose, it is the current of excitation which plays on the regulation.

[loop]

The regulator of a car alternator only adapts the excitation current to the rotor to ensure 14V at the output of the rectifier bridge.
If there is a high demand, the temporary drop in voltage causes the regulator to inject more current. If the battery is full or if the voltage rises it is the opposite.
On an automobile we consider that the mechanical drive of the alternator shaft is limitless compared to the power of the engine.
On a wind turbine it is another story.

To return to the wind turbine regulator (Xantrex type), it must collect high powers necessary for the safety of the wind turbine. But that has nothing to do with an optimization function like an mppt.

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[Alain G]

Darwenn

As mentioned above by I don't know who, the difference between Wind and Solar Regulator is only the braking of the wind turbine to avoid its destruction by over-rotation, it can very well be done by a rotation sensor and some relays, in terms of regulation it is the same except for regulators which increase the voltage to get the most from the source and which are generally used on the Solar.

The car regulator can work if used with a rotation sensor which will brake the blades in case the rotation is too great, but in your case it is useless because you have a mechanical feathering which plays this role, so stop you break your head and try to regulator alternator you will see if it works if not use the output of the diode bridge directly on the batteries.

[Alain G]

The regulator of a car alternator only adapts the excitation current to the rotor to ensure 14V at the output of the rectifier bridge.
If there is a high demand, the temporary drop in voltage causes the regulator to inject more current. If the battery is full or if the voltage rises it is the opposite.
On an automobile we consider that the mechanical drive of the alternator shaft is limitless compared to the power of the engine.
On a wind turbine it is another story.

To return to the wind turbine regulator (Xantrex type), it must collect high powers necessary for the safety of the wind turbine. But that has nothing to do with an optimization function like an mppt.

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Hi Looping!


The regulator on a car alternator has no connection with the excitement because it is not connected to it at least on all those I have seen so far.

The problem could be located at the start of the regulator which may need a certain voltage to activate but still have to see, it can be different from one model to another.

[loop]

Good evening,

The regulator on a car alternator has no connection with the excitement because it is not connected to it at least on all those I have seen so far.

I did not invent anything.
For explanations look a little, it's true, you don't have to believe me.

The regulator is the intelligent organ of the alternator. It constantly seeks to maintain a stable voltage at the output of the alternator.
For this, it manages the excitation of the rotor which will act on the voltages enter phases of the stator and therefore by chain on the output voltage of the alternator
It is also he who reports the charging faults

Source

http://www.ccf-forum.org/fonctionnement ... t7467.html

Good reading

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[Alain G]

Looping

Sorry you're right!

I confuse the old Alternators with the new ones!

All my excuses!

But they work as rectifiers.

[darwenn]

It is also true that I have my feathering on my wind turbine (I had forgotten it) and which works very well for strong wind protection. So provisionally at least, maybe then I can try in practice my theory with a more powerful solar regulator and the comparator on relay, if really the concern was the strong wind in the event of charged battery which will make that the wind turbine could get carried away , then the feathering will work and in addition the load at the output would be diverted either in another battery or a resistance and at worst and well I stop the wind turbine point barre. Even if it is not optimized, even if it is not ideal temporarily I can still see while waiting for the acquisition of a real regulator.

The mmpt finally of which you spoke to me about looping does optimize the performance of your wind turbine to get the best performance is it? So if I understand correctly, it replaces a regulator or is it added upstream or downstream of this one? Because if a mppt finally costs the price of a regulator what would be the best choice?

[loop]

Hello everyone,

The mppt function is generally integrated into the regulator, finally for those I know.
I am currently testing my mppt regulator for wind turbines. It was down and just came back to me.
The regulator is a "buck" model which lowers the input voltage to the battery charge voltage: you can choose 12, 24, 48V (I am in 12V as my alternator)
On the other hand in voltage at the input of the three-phase rectifier, the alternator can flow up to 150V AC !!
The soft mppt therefore adapts this voltage to draw the maximum power from the generator (here the alternator of the wind turbine)
The "lockout" function is a connection to a discharge resistor, specific to wind regulators.

I take this opportunity to give you two links to new products. If some know, their opinions are welcome:

A mini grid-inverter mppt direct from a solar source

http://cgi.ebay.fr/Max-250W-Envirotechs ... .m20.l1116
http://cgi.ebay.fr/250W-GRID-TIE-INVERT ... -INVERTER-

Even stronger
A mini inverter grid connectable to a battery
Exactly the product I've been looking for for months

http://cgi.ebay.fr/250W-GRID-TIE-INVERT ... 286.c0.m14

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