This paper deals with characteristics of a High-Tc superconductor (HTS) persistent current switch (PCS) system considering the n-value. I also present its operational characteristics through experiments. A HTS PCS system mainly consists of a PCS, a HTS magnet load, and a magnet power supply (MPS). The HTS magnet load was made-up of two double pancake coils in series. In order to measure the persistent current with respect to the magnet flux changes, a hall sensor was installed at the center of the magnet load. In the experiments, the initial current dropped rapidly in the persistent current mode. In order to analyze current decay, we introduced a new electrical equivalent model considering the n-value. Experimental results of the HTS PCS system have been compared with the theoretical results. It has been concluded that the characteristics of initial current decay were mainly determined by the voltages generated in the pancake load due to n-value and joint resistance.
Bibliographical noteFunding Information:
Manuscript received September 20, 2005. This work was supported by KESRI (R-2005-B-113), which is funded by MOCIE (Ministry of Commerce, Industry and Energy). Y. S. Yoon is with the Electrical Engineering Department, Ansan College of Technology, Ansan 425-792, Korea (e-mail: email@example.com). H. M. Kim is with the LS Industrial System Co. Ltd., Chungju, Korea. H. Kang is with the Hyundai Heavy Industrial Co. Ltd., Yongin, Korea (e-mail: firstname.lastname@example.org). D. K. Bae is with the Korea Institute of Machinery and Materials, Daejeon, Korea (e-mail: email@example.com). M. C. Ahn, S. E. Yang, D. K. Park, and T. K. Ko are with the Electrical & Electronic Engineering Department, Yonsei University, Seoul 120-749, Korea (e-mail: firstname.lastname@example.org). Digital Object Identifier 10.1109/TASC.2006.870017
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering