Development of 70 MW class superconducting generators

In Japan, the Engineering Research Association for Superconductive Generation Equipment and Materials (Super-GM) has been conducting R&D since FY 1988 on 70-MW class model machines in an effort to realize a 200 MW class pilot machine commissioned as part of the Moonlight Project `Development of Superconductivity Technology for Application to Power Apparatuses´. The authors describe the recent development of superconducting generators in Super-GM. It is noted that the R&D on superconducting generators by Super-GM which started in FY 1988 is progressing from the research stage of element techniques to the verification of manufacturing techniques using various partial models such as field winding models, multi-cylindrical rotor, damper model, air-gap armature winding, rotating cooling model, and helium transfer coupling