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Registered Member #1822
Joined: Fri Nov 21 2008, 08:04PM
Location:
Posts: 300
As soon as we get room temperature superconductors these generators will be everywhere. The peak current would be extraordinary! The only limit I can see would be the bearings if they are conducting the power although, the liquid metal conductor spray solves that.
Registered Member #1526
Joined: Mon Jun 09 2008, 12:56AM
Location: UK
Posts: 216
I don`t think it`s quite that simple though. The critical current, above which superconductivity is lost, is not as great as you might imagine for current superconductors. The advantage for things like electromagnets is that the lack of resistance allows more windings to be packed in, increasing the field. This is not really an option for a homopolar generator so I`m not sure superconductors are that big a help in this case.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
I know very little about these devices, but got the impression from the Blamey paper that the Australian University homopolar generator represents the high water mark of the art.
It was built during the Golden Age of (British) Atmospheric A-Bomb Testing in Australia. The paper makes clear that the work could not be contracted out (i.e. it was secret) - and some parts of the construction - the working of vast iron ingots - was performed by a naval shipyard.
Expense was not the issue it would be for fundamental nuclear research today.
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homopolar generator
