Small Wind Generator AC to DC Circuit

tonyctsiu · Feb 10, 2014

I am working on a project which uses a wind generator (basically a 10cm diameter windmill driving a motor as a generator giving AC current) to power a ~1W LED.

I would like to convert the AC power given by the generator in to DC.
Apart from using bridge rectifier which gives around 0.5-0.7V drop. Is there currently any sophisticated IC solution that can do the conversion with highest possible efficiency?

Regards

Tony Chun Tung Siu

Genovator · Feb 10, 2014

Search google for mosfet rectifiers....

http://digital-diy.com/general-electronics/552-a-no-voltage-drop-bridge-rectifier.html
http://www.fairchildsemi.com/ds/FD/FDS8958A.pdf

tonyctsiu · Feb 11, 2014

Thanks! it really help!

kam1787 · Feb 11, 2014

tonyctsiu said:
Apart from using bridge rectifier which gives around 0.5-0.7V drop.

Actually the voltage drop would be closer to 1V4.

You can use Schottky diodes, but there will still be a drop of around 0V6

I may be ignorant but why not use a DC motor? https://cleangreenenergyzone.com/wind-turbine-permanent-magnet-dc-motors/

tonyctsiu · Mar 3, 2014

Dear Kam,

Thank you for your reply.
The reason why I need to use AC generator is that it there is commutator in the simple DC motor which create friction.

Small Wind Generator AC to DC Circuit

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