Evaluation of three-layer damper for superconducting generator

A three-layer room-temperature damper, which is considered to be most suitable as a damper structure for superconducting generators, was evaluated by analyzing negative-sequence losses, temperature rises, stresses due to crushing force during 3-phase sudden short-circuit fault, and other conditions. Also, a 300MW-level 3-layer damper test model manufactured by explosive bonding, which is considered to be a promising method for manufacturing 3-layer dampers, was evaluated by subjecting it to various tests.