Dynamo on wind turbine

[frederic24]

Hello
As part of a homemade wind turbine that drives a 22A dynamo, I am looking for the solution:
What to install easily between the dynamo and the battery to avoid any discharge of the battery?

Thank you for your advice

[Former Oceano]

Diodes to avoid discharge would be the solution. As they only let the current flow in the charging direction and block it in the other direction.

I let my electronics friends develop with lots of information and diagrams ...

[frederic24]

Thank you for this first level of response.

Could someone tell me more about this?

and which product on this technical basis can I find in the trade?

[loop]

Hi Frédéric24

Dynamo is not enough to describe your generator
22A seems to be already an interesting current in any case, it is not a bicycle dynamo
Either you use an automotive type alternator, in this case you need a diode bridge to rectify the current and produce DC
This allows, among other things, to charge a battery (12 V?) And there is no current "up" to the alternator in case of shutdown.
Either you use a generator (synchronous motor reversed in some way) and in this case, it is necessary at least to place a diode on one of the two wires to avoid that the battery feeds the said generator and transforms it into motor

Good luck

[elephant]

For such currents, here is the kind of beast you need:

http://www.conrad.fr/webapp/wcs/stores/ ... y_rn=18973

that said: these charge currents seem to me to be very high:
therefore, I would eventually provide a 40 amp fuse to protect the diode and the alternator.
What are the characteristics of your alternator and the capacity of the batteries?