Latest news about superconducting A.C. machines

Due to technological progress over the last ten years, manufacturing long lengths of Nb-Ti ultra-fine filamentary wires with greatly reduced 50-60 Hertz losses has been achieved. The prospective industrial applications in large superconducting 50/60 Hertz equipment heralds promise of a technological revolution in electrotechnology. In this paper the authors present results available on design and test machines used in electrotechnology. ''Classical'' A.C. machines with superconducting rotor windings (generators) and ''Superconducting'' 50/60 Hertz machines (transformers, generator armature windings)