| Title |
Saturation Characteristic of Iron Core Dependent on Fault Angle in a Flux-Lock Type SFCL |
| Authors |
Sung-Hun Lim ; Jae-Chul Kim |
| Keywords |
Flux-Iock type superconducting fault current limiter(SFCL) ; Fault angles ; Exciting current |
| Abstract |
The fault CUITent limiting characteristics of a flux-lock ty{;e superconducting fault current limiter (SFCL) according to fault angles were investigated From the electrical equivalent circuit with the magnetization branch, the inner magnetic flux of this SFCL due to fault angles was induced and its effect on the limited fault CUITent was analyzed. From the fault current limiting exp:riments, the exciting current, which described the sattU"ation of the iron core, was calculated and its dependence on the fault angle was analyzed. Before the fault happened, the exciting current did not ha~ that it, kept zero value. However, after the fault happened, the exciting current flowed and, the exciting current in case of the additive IXJlarity winding showed higher value than for the case of the subtractive IXJlarity winding. The analysis results were compared with the experimental ones, and experirrental results agreed with the analysis ones. |