A 30kVA superconducting generator development and basic tests

A 30kVA superconducting generator (S.G.) has been designed, developed and s uccessfully tested in Korea Electrotechnology Research Institute(KERI) befo re the end of last year. The design is based on 2-dimensional electromagnet ic held analysis of cylindrical coordinate. The field winding of rotor has been wound with superconducting wire of NbTi alloy and tested after assembl ed with other rotor components. The stator has air-gap type armature windin gs, which produce higher terminal voltage, and more sinusoidal voltage wave form than conventional iron cored machines. Steady- state open & short-circ uit test and lamp load test have been conducted also, The results of tests are given in this paper and compared with design quantities. Moreover the c ooling scheme and characteristics of test system is included.