Earticle

초록

영어

As environmental concerns become a global issue, wind turbines are gaining attention as a sustainable energy solution. Traditional wind turbines use a mechanical gearbox to transfer energy from the low-speed, high-torque blades to the high-speed, low-torque generator. However, mechanical gearboxes present various challenges due to mechanical contact. To address these issues, considerable research has been conducted on magnetic gears. Since magnetic gears operate without mechanical contact, they offer advantages such as high transmission efficiency and inherent overload protection. Various topologies exist for magnetic gears, and with the introduction of modulating gear topology, torque density has been significantly improved. Many studies are focused on further enhancing torque density, one of which involves the use of superconductors. This paper presents the design of a magnetic gear using REBCO superconducting coil magnets to enhance torque density compared to conventional permanent magnet magnetic gears. The design optimization was conducted using the Non-Dominated Sorting Genetic Algorithm II (NSGAII). The performance was evaluated in terms of torque ripple, torque density, and efficiency. In the magnetic gear applying superconductor, it demonstrates performance with lower torque ripple (0.16%/0.25%), lower losses (229 kW), higher efficiency (96.35%), and higher torque density (1.086 MNm/m³).

목차

Abstract
1. INTRODUCTION
2. MAGNETIC GEAR DESIGN
2.1. Permanent Magnet Magnetic Gear (PMMG)
2.2. Superconductor Magnetic Gear (SCMG)
3. LOSS CALCULATION
3.1. Loss in Magnetic Gear
3.2. Loss of PMMG and SCMG
4. PERFORMANCE COMPARISON
4.1. Torque Ripple & Torque Density
4.2. Efficiency
4.3. Performance Comparison
5. CONCLUSION
ACKNOWLEDGMENT
REFERENCES

키워드

저자

• EunSeok Yang [ Department of Future Automotive Mobility, Seoul National University, Seoul, 08826, Republic of Korea ]
• Jonghoon Yoon [ Department of Electrical and Computer Engineering, Seoul National University, Seoul, 08826, Republic of Korea ]
• JuKyung Cha [ Department of Electrical and Computer Engineering, Seoul National University, Seoul, 08826, Republic of Korea ]
• Jaheum Koo [ Department of Electrical and Computer Engineering, Seoul National University, Seoul, 08826, Republic of Korea ]
• Seungyong Hahn [ Department of Electrical and Computer Engineering, Seoul National University, Seoul, 08826, Republic of Korea ] Corresponding Author
• Sangjin Lee [ Department of Electrical and Computer Engineering, Seoul National University, Seoul, 08826, Republic of 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