Electric motor having cryocooled armature litz windings

Abstract

A cryocooled electric motor (500) comprising: a stator (510) comprising a magnetic core (510,510a), a rotor (520), an armature arrangement (550) and a cryogen source arranged to provide a cryonic fluid (544) to the armature arrangement (550), in order to cool the armature arrangement (550) below a temperature of 77 K, wherein the armature arrangement (550) comprises a plurality of Litz wires (552) and wherein the armature arrangement (550) is able to provide during operation of the motor a current density of more than 25 A/mm2.

Dependencies are inferred from the claim text.