This paper presents the results of the fabrication and preliminary charging test of second-generation higherature superconducting (2G HTS) coils for the rotor field winding of a 1-kW-class HTS rotating machine (HTSRM). This machine technically employs an HTS contactless rotary excitation device (CRED), which is the so-called rotary flux pump, to charge the HTS field windings using a noncontact excitation method. In this study, the major components of the 1-kW-class HTSRM, such as the 2G HTS coils for the rotor field pole of the rotating machine, HTS strands with a toroidal head for the rotary part of CRED, and stationary part of CRED, were fabricated and assembled. Then, the charging performance of the field operating current was tested in preliminary experiments. In particular, to confirm the technical feasibility of CRED on application to the 1-kW-class HTSRM, the HTS field coils were charged under various operating conditions of the HTS CRED in a stationary flux-pump mode.
Bibliographical noteFunding Information:
Manuscript received October 30, 2018; accepted February 27, 2019. Date of publication March 6, 2019; date of current version April 4, 2019. This work was supported in part by the “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy (MOTIE), and in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP), Republic of Korea under Grants 20184030202200 and 2016R1A2B4007324. (Corresponding author: Ho Min Kim.) J. H. Kim, H. L. Quach, and H. M. Kim are with the Department of Electrical Engineering, Jeju National University, Jeju-si 63243, Korea (e-mail:, firstname.lastname@example.org).
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering