Rotor design of a 1000 MW superconducting generator

A conceptual rotor design was developed for a 1000 MW superconducting generator having a high-initial-response excitation system. Field winding design, magnetic field analysis of the field winding, and loss calculations and force and stress analyses for the rotor body were carried out. The results are as follows: (1) the operating point of the field winding at the transient state is 72% of the short sample characteristics; (3) the stress in the rotor teeth at the steady state is 405 Pa; and (4) high initial response excitation can cause quenching of the field winding, so the shaft should have a higher resistivity. The maximum flux density at the field winding end region can be small due to optimum magnetometer force distribution.<>