Optimization of Transformer Winding Considering AC Loss of BSCCO Wire.

AC loss is one of the important parameters in HIS (High Temperature Superconducting) AC devices. Among the HTS AC power devices, the transformer is an essential part in electrical power system. But, AC loss is one of the most serious problems of the HIS transformer, especially with pancake windings, because high alternating magnetic field is applied perpendicularly to the surface of BSCCO wire in HIS windings of that, comparing with the other HTS AC power devices. For the reason above the calculation of AC loss generated in the HTS windings should be carried out in advance when designing the HTS transformer. In the paper we performed study for optimization of winding design to minimize the magnetization loss of HTS winding such as the spaces between pancake windings and operating temperature of HIS wire. The calculation of the AC loss was accomplished by 2-dimensional Finite Element Method. [ABSTRACT FROM AUTHOR]