Rolls-royce Corporation

Stephen Williamson

Alexander Charles Smith

Stephen Mark Husband

Ellis F H Chong

John J A Cullen

Ellis Fh Chong

Alexander C Smith

John Cullen

An electrical machine including a rotor and a stator, at least one of the rotor and stator being provided with superconducting first electrical windings; and a set of one or more screen electrical windings, provided in the form of one or more further superconducting electrical windings, arranged around and radially outward of the first electrical windings; wherein the set of screen electrical windings is arranged to be supplied with an electrical current for generating a magnetic field of suitable magnitude and phase to reduce the magnitude of the magnetic field, generated at least by the first electrical windings during operation of the electrical machine, radially outwards of the screen electrical windings.

Active screening for an electrical machine

A superconducting electrical machine includes a rotor and a stator. The stator includes a stator having a plurality of circumferentially spaced radially extending teeth and a plurality of superconducting electric coils. Each superconducting electric coil is positioned around a respective one of the teeth. A thermally conducting member surrounds and contacts the stator. A cooler is arranged to cool the thermally conducting member. A vacuum enclosure encloses the thermally conducting member, the stator and the superconducting electric coils and a pump is arranged to evacuate the vacuum enclosure. The superconducting electrical coils include magnesium diboride.

Superconducting electrical machine

Growing community of inventors

Huddersfield, United Kingdom

Stephen Williamson