🚀 go-pugleaf

philip rose `94 (rose@bucknell.edu) wrote:
: In article <1993Jan22.134237.13381@waikato.ac.nz>, phys2108@waikato.ac.nz writes:

: |> One way I believe they can do it is by using the dc to power a motor, which
: |> then drives an ac generator.
: |> Geoff.

: NOOOOO  WAAAAAY!!!

: This is done with power electronics,  no motors or generators are involved.

So, what you're saying is this:

"I've never heard of it, therefore it doesn't exist!"

Motor/Generators (MG's) have been around for many MANY decades.  We didn't
always have nice silicon controls to work with...

Commonly, you will have both the motor and generator (or alternator, whichever)
on the same shaft, so they are directly mechanically coupled.
If you put a big flywheel on the shaft between them, then you have a basic
UPS system...the mass of the flywheel will mostly compensate for the lost
power, to a point.

There is obviously an efficiency loss due to heat, and they take up a bit of
space, but they certainly do exist.

NOOOOOOOOOOOO WAAAAAAAAAAAAAAY  indeed!  Sheesh.

--

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Ask me if I have an opinion on this! \ Don't blame me; I voted for Perot!
SAAB - Because you get what you pay for.     \       Pherrets are Phun!!!