The rotary flux-pump using HTS tape has been studied for superconducting rotating machinery application. The charging speed and saturation current of the rotary HTS flux-pump is closely related to magnetic flux linkage passing through the HTS tape. To analyze charging parameters that effect pumping rate and saturation current of the flux-pump, methods of changing the rotating speed, shape of permanent magnet, width of HTS tape, and magnetic flux intensity have been investigated in previous studies - . In this paper, we have tried to test three cases to investigate the pumping rate and saturation current: 1) two different background materials, iron and Bakelite, were used to compare the magnetic flux linkage reinforcement; 2) two HTS tapes were overlapped to extend the magnetic flux linkage area, and each HTS tape was connected to an HTS coil; and 3) the parallel joint was conducted between the flux-pump and the HTS coil to compose a closed loop for persistent current mode. In order to measure the charging speed and pumping rate, a Hall sensor was installed at the center of the HTS coil.
Bibliographical noteFunding Information:
Manuscript received August 27, 2017; accepted November 27, 2017. Date of publication January 15, 2018; date of current version January 25, 2018. This work was supported by the National Research Foundation of Korea funded by the Korea government (MSIP), Republic of Korea, under Grants 2017R1A2B3012208 and 2016R1A2B4007324. (Corresponding author: Haeryong Jeon.) H. Jeon, J. Lee, S. Han, and T. K. Ko are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering