alt.energy.renewable

BobG wrote:

> On Sep 8, 3:26?am, maur...@ (Mauried) wrote:
> > Usin g transformers will be OK as long as the output frequency from
> > the windmill doesnt drop much below50HZ, which is 1000 RPM for a
> > 3 phase alternator.
> > If it drops below50HZ, the transformer efficiency plummets.
> > Most windmills which have 3 phase outputs rectify the AC to DC.-
> ==========================================
> I thought it was the hi freq end of a 60hz xformer that took a poop.

Depends how high you want to go.

If the frequency drops seriously below the specified operating frequency the
core will simply saturate and worst case, the primary circuit will burn out due
to the resulting over-current.

Graham