VFDs are rated on HP and efficiency
Youll probably never need 100% of your HP.
Yes the drill will slow down and stop,
after all the smoke is let out of the VFD.
Its amazing what a good VFD can do.
We installed some large high voltage ones on the 4000 HP chillers at EPCOT.
We went from 6% voltage drop across the whole incoming utility line to 3%
and helped with the life of the chillers too.
Did you see the pics of the Rockwell bandsaw speed controller I rebuilt?
It used a vacuum tube and rheostat to vary the voltage at the clutch
which determined the amount of slip it got.Pretty cool design by Eaton.
As far as the 3ph to single ph conversion,I know of no VFDs that do this,
perhaps a stand alone unit will work but keep in mind it will reduced HP.
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Everything comes and goes
Pleasure moves on too early
And trouble leaves too slow
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