Superconducting magnet motor

[Honk]

This quote was taken from: http://k12.magnet.fsu.edu/mediacenter/news/pressreleases/2007august7.html
"Superconducting magnets require little or no electrical power to run once they are brought up to full field."

I have also read that somewhere else that superconducting magnets will allow for "almost" perpetual machines to be made.
There was no explantion of how these almost perpetual machines was working or designed.

But if a superstrong magnetic field that requires almost no energy is used in a puls motor that turns a generator
that delivers lots of power out, why shouldn't we be able to close the loop and get a real perpetual machine?

Something is fishy here. Almost no energy in but lots of energy out but still we are told that the loop can't be closed?
If possible there should be attemts made to use a supercooled motor /generator to generate electricity.

For the moment let's disregard from use of more cooling refrigant. Once cooled it does not really require any more coolant.
I'm just looking for an answer on the closed loop question!

Does somebody care to explain this for me!!!

[acp]

At what temperature does it run at? Room temperature? it's not mentioned in the article.

[Honk]

The temp is very low, approx -160 degree Celcius. That's equal to -256 F.
I'm just pointing to the fact that little or no power is needed to create supermagnets that can be turned on/off to make a motor.

[Honk]

Forget the money part, I'm just looking to close the loop and get a super cooled self running motor/generator setup.
I'm not interested in the whole picture, just the closed loop. Is it possible or not.

Superconducting magnets have been around for a long time. When they say little or no power I really believe they
mean almost no power.

[acp]

Yes I'm sure it's true the supermagnets need little or no power. But I wonder what the power requirement is to maintain those temperatures. That power of course will have to be taken into account in closing the loop.