Abstract
We have been developing 70MW class superconducting generators (called model machines) till now. The model machines are composed of two slow response excitation type rotors (called A and B type) and one quick response type rotor, and a commonly used stator for three rotors. A and B type machines were already installed in the verification test facility and were completed investigation by September 1998. Recently, quick response type machine has been tested. Superconducting generators have different characteristic and structure from conventional generator. For example, electric resistance of field winding for superconducting generators is nearly zero, and damper components in rotor are multiple. So, it is difficult to define some constants of superconducting generators by conventional methods. Therefore, according to the test results of these superconducting generators, we will propose and describe a practical investigation into some constants of the superconducting generators as below.
