We present the results of a two-dimensional electromagnetic finite-element analysis of a 1-kW-class high-temperature superconducting (HTS) wound-field synchronous motor that considers armature-current information, i.e., current phase angle β and current Ia, for maximum torque per ampere and flux-weakening control. The torque performance was analyzed using the d- and q-axis inductances, which were estimated when β and Ia were varied. Then, the characteristics of the magnetic field distribution and operating current margin of the HTS field coils were investigated based on various β and Ia values. Finally, suitable β and Ia were estimated as references for a future study.
Bibliographical noteFunding Information:
Manuscript received September 19, 2017; accepted March 19, 2018. Date of publication March 28, 2018; date of current version April 10, 2018. 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) Grant funded by the Ministry of Trade, Industry and Energy, and in part by the National Research Foundation of Korea (NRF) Grant funded by the Korea government (MSIP), Republic of Korea. (Nos. 20164030201230 and 2016R1A2B4007324). (Corresponding author: H. M. Kim.) J. H. Kim, C. J. Hyeon, H. L. Quach, S. H. Chae, and H. M. Kim are with the Department of Electrical Engineering, Jeju National University, Jeju-si 63243, South 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