Earticle

초록

영어

This paper presents comparative research on characteristics of air-cored and iron-cored high-temperature superconductor (HTS) field winding synchronous motors. The 100 kW air-cored model is designed analytically by Spatial Harmonic Method, and based on this model, the iron-cored model having the same output power is designed for comparison. Due to the substantial difference of permeability property between air and iron-core, there is a difference of magnetic field magnitude and angle with respect to the HTS tape c-axis, resulting in a different critical current of the field winding considering the anisotropic property of HTS tape. For a detailed comparison between two models, the following key motor characteristics are calculated through the Finite Element Method (FEM) simulation: 1) critical current; 2) HTS wire length; and 3) torque characteristics. From the simulation results, it can be confirmed that the critical current value of the iron-cored model increases by 33 %. Also, in the case of the superconducting wire consumption, those of the iron-cored and air-cored models are 95.3 m and 815.6 m, respectively. So the wire usage can be reduced to about 88 % by using iron core. However, in terms of torque characteristics, the torque ripple of the iron-cored model is about twice as large as that of the air-cored model, which may be a disadvantage on vibration and acoustic noise.

목차

Abstract
1. INTRODUCTION
2. DESIGN OF AIR-CORED AND IRON-CORED MODELS
2.1. Analytic Field Calculation by Spatial Harmonic Method
2.2. Critical Current Calculation Considering Angular Dependency of REBCO Tapes
2.3. Design Parameter Selection by Parameter Sweep
2.4. Design of Iron-cored Model Based on the Air-cored Model
3. CHARACTERISTICS COMPARISON
3.1. Comparison of field distribution and 𝐼𝑐 estimation at the field winding
3.2. Comparison of total HTS wire length
3.3. Comparison of torque characteristic
4. DISCUSSION
5. CONCLUSION
ACKNOWLEDGMENT
REFERENCES

키워드

저자

• Jonghoon Yoon [ Seoul National University, Seoul, Korea ]
• Uijong Bong [ Seoul National University, Seoul, Korea ] Corresponding Author
• Soobin An [ Seoul National University, Seoul, Korea ]
• Seungyong Hahn [ Seoul National University, Seoul, Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537