Design, analysis, and fabrication of salient field-pole for a 1-kW-class HTS rotating machine

Ji Hyung Kim, Chang Ju Hyeon, Huu Luong Quach, Sang Heon Chae, Yoon Seok Chae, Jae Hyung Moon, Chang Jin Boo, Yong Soo Yoon, Jeyull Lee, Haeryong Jeon, Seunghak Han, Young Gyun Kim, Haigun Lee, Ho Min Kim

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


This paper presents the results of our electromagnetic parametric design, two-dimensional finite element analysis (2-D FEA), final fabrication, and basic test to develop a salient-field pole in rotor for a 1-kW-class high-temperature superconducting rotating machine (HTSRM). The developed machine is a small-scale prototype for an integrated system with an HTS rotating machine and a HTS contactless rotary excitation device, which is connected to the same shaft of the rotating machine and charges the HTS coils of the rotor field winding by pumping fluxes via a non-contact method. To increase economic efficiency during the development stage and the performance of the 1-kW-class HTSRM, various salient-pole structures of the rotor and magnetic materials of both the rotor and stator are considered. Using the time-transient solver of the 2-D FEA, various key design parameters are investigated and compared by considering structural dimensions of the salient-field pole. Then, the final 2-D FEA model is determined based on the parametric-analysis results, and a performance analysis is conducted to determine the various machine characteristics. Finally, the salient-field pole of the 1-kW-class HTSRM was fabricated using four race-track HTS single-pancake coils, and its basic characteristics were measured at 77 K.

Original languageEnglish
Pages (from-to)126-132
Number of pages7
Publication statusPublished - 2019 Jan

Bibliographical note

Funding Information:
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 by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP), Republic of Korea (Nos. 20184030202200 and 2016R1A2B4007324).

Publisher Copyright:
© 2018 Elsevier Ltd


  • Contactless rotary excitation device
  • Finite element analysis
  • High-temperature superconducting rotating machine
  • Salient-field pole

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)


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