Electricite De France

Alsthom-atlantique

Societe Anonyme Dite:alsthom

Jean-Louis Sabrie

Yves Laumond

A synchronous machine having a rotor which is fixed to a shaft supported in bearings, said machine having its rotor (1) and stator (2) windings cooled by very low temperature helium, with each of the windings and the gap (4) therebetween being in a vacuum enclosures. The said rotor and stator windings and the said gap are disposed inside a common enclosure (13) connected to a common vacuum source (17), and said gap is separated from the bearings (14) of the rotor shaft (3) by vacuum-resisting oil seals (15) and by cryogenic traps (16).

Synchronous machine with superconducting windings

A synchronous electric machine has a voltage and speed regulator, comprising a stator provided with a secondary winding and a rotor provided with a primary winding, intended for connection to a feeder grid (operating as a motor) or a user grid (operating as an alternator). The stator winding (ES) is coupled with a second stator winding (e) feeding a static rectifier circuit (R) whose output is connected to a superconducting energy storage winding (BS). The rectifier circuit is controlled by a computer (C) programmed to inject active and reactive power into the stator in such a manner as to attenuate transient conditions.

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Cravanche, France

Jean-Louis Sabrie