| Title |
Current Sharing and AC Loss of a Multi-Layer HTS Power Transmission Cable with Variable Cable Length |
| Authors |
이지광(Lee, Ji-Kwang) ; 차귀수(Cha, Guee-Soo) |
| Keywords |
superconducting transmission cable ; current sharing ; cable length ; AC loss |
| Abstract |
The superconducting transmission cable is one of interesting part in power application using high temperature superconducting wire. One important parameter in HTS cable design is transport current sharing because it is related with current transmission capacity and loss. In this paper, we calculate self inductances of each layer and mutual inductances between two layers from magnetic field energy, and current sharing of each layer for 4-layer cable using the electric circuit model which contain inductance and resistance (by joint and AC loss). Also, transport current losses which are calculated by monoblock model and Norris equation are compared. As a results, outer layer has always larger transport current than inner layer, and current capacity of each layer is largely influenced by resistance per unit cable length. As a conclusion, for high current uniformity and low AC loss, we have to decrease inductances themselves or those differences. |