HTS Field Coil Optimization for Large Capacity Generators

Field coils with rectangular and step-shaped structures applied for large capacity superconducting generators are optimized based on a genetic algorithm. A detailed description of the optimization process is presented. The perpendicular magnetic field distribution and minimum critical current, I
_{c_min}
, of the field coils are analyzed by using the Finite Element Method. The results show that the electromagnetic characteristics of the optimized field coils are improved after optimization and that the high-temperature superconductor tape consumption is also reduced.