| Title |
Absolute Evaluation of Inductor Using Current Transformer Comparator |
| Authors |
김윤형(Kim, Yoon-Hyoung) ; 정재갑(Jung, Jae-Kap) ; 한상길(Han, Sang-Gil) ; 김한준(Kim, Han-Jun) ; 한상옥(Han, Sang-Ok) |
| Keywords |
Inductance ; Current Transformer ; Phase Displacement ; Current Comparator ; CT Test System |
| Abstract |
We have developed two absolute evaluation technology of inductor using current transformer (CT) comparator. One is the method that the reactance of inductor is obtained by analysing the equivalent circuit of CT with inductor connected to series at secondary terminal of CT. The other is the method that the reactance of inductor is obtained by comparing phase displacement of current flowing on inductor by using CT comparator. These technologies have the advantage to apply up to rated current and voltage of inductor. The method was applied to inductors under test in the range of 100 {\mu}H{\sim}1\;H. The inductance of the inductor under test obtained in this study are consistent with those measured by LCR meter using the same inductor within an expanded uncertainty (k = 2) in the overall range of inductance. |