Electromagnetic Characteristics of 70MW-Class Superconduting Generator

Abstract

A national project of development of a superconducting generator (SCG) has been carried out since 1988 in Japan under the New sunshine Project of AIST, MITI. A superconducting generator is supposed to have merits of stability improvement on transmission line, higher efficiency and compactness. A 70MW-class superconducting generator is the goal of the project.
Hitachi Ltd has been developing a rotor having superconducting field winding and a stator having air-gap armature winding.
The superconducting generator was tested in the Hitachi works, and a full-scale demonstration test was finished on December in 1997 in the Super-GM test site. The machine showed excellent performances, which are enough for a 70MW-class generator.