DEVELOPMENT OF A 70-MW CLASS SUPERCONDUCTING GENERATOR

A national project to develop a superconducting generator was begun in 1988 in Japan under the New Sunshine Project of AIST, MITI, This gene rator has merits of greater for transmission lines, higher efficiency and compactness, A 70 MW class superconducting generator is the goal o f the project, The authors have been developing a rotor having a super conducting field winding and a stator having an air-gap armature windi ng, The field winding was designed to be cryostable so as to recover f rom a partial transition to normal conduction, The field winding was t ested in a nonrotating cryostat, and excitation performance and stabil ity were confirmed to be enough for, the 70MW class superconducting ge nerator,The rotor and the stator has been completed, and a shop test i s being made now.