Electricite De France - Service National

Electricite De France

Alsthom-atlantique

Societe Generale De Constructions Electriques Et Mecaniques (alsthom)

Societe Generale De Constructions Electriques Et Mecaniques Alsthom S.a.

Michel Berthet

Roger Gillet

Francois Moisson-Franckhauser

Andre Marquet

Yves Laumond

Christian Lehuen

A current lead for a superconducting rotary machine is constituted by a copper tube having a superconducting conductor fastened (e.g. by soldering) to a portion of its length, the entire length of the tube having copper cooling plates each of which blocks the bore of the tube leaving only a small hole for the passage of gaseous or hypercritical helium. The current lead is particularly applicable to the generation of electric power using cryoalternators.

Current lead-in device for superconducting rotary electrical machines

The circulation of a low temperature cooling fluid is insured by thermal hon effect in a cryoalternator from within a closed loop circuit containing an inner rotating seal of the 'bayonet' type with a very small radial gap. Longitudinal and radial piping within the rotor permits internal circulation of cooling fluid by thermal siphon effect across the 'bayonet' type rotating inner seal in the absence of positive circulation by leakage of the coolant across the inner seal radial gap.

Rotating machine using a cooling fluid supplied by a rotating seal

An electric rotating machine whose inductor operates at very low temperat and is separated from the rotor by an empty space, characterized in that a reflector screen constituted by a layer of thermally conductive strips connected together at their axial ends by thermally conductive connection parts to a cooled structure, is inserted in that empty space.

Electric rotating machine having a cryo-inductor

Growing community of inventors

Gif sur Yvette, France

Michel Berthet