Research of HTS Field Pole using Stacked Wire for Electric Ship Propulsion

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K15221
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 24020:Marine engineering-related
• Research Institution: National Institute of Technology, Toyota College
• Principal Investigator: Tsuzuki Keita 豊田工業高等専門学校, 情報工学科, 准教授 (40713045)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 超伝導 / ワイヤ / テープ / 界磁極 / 強磁場 / 積層 / 着磁 / 低温

Outline of Final Research Achievements

The purpose of this research is to establish a calculation method for designing a rotating machine based on the verification test results of a prototype superconducting laminated wire field magnet using superconducting materials that can generate a strong magnetic field with zero electrical resistance.
As a result of the research, it was confirmed from the construction of a small-scale model of the laminated wire that the trapped magnetic flux density may be improved due to the shape effect when the laminated wire is stacked and attached to the radial-gap type field pole.
A method to calculate the trapped flux distribution of magnetized stacked superconducting wires by electromagnetic field analysis based on Jc-B curve. Furthermore, a prototype test of the structural technology for magnetism inside the device was conducted, and verification of the elemental technology for application to rotating machines for ship propulsion was completed.

Free Research Field

超伝導工学

Academic Significance and Societal Importance of the Research Achievements

船舶推進用超伝導モータは、船舶が排出するCO2による環境負荷の低減や航行中の騒音・振動の軽減、安全性や操船性能の向上などの電気推進のメリットを生かすことができる。本研究による電気推進船動力用超伝導ワイヤ積層型界磁極と着磁構造の研究は超伝導材料を用いた強磁場と理想的な磁場分布の追求である。この技術を電気機器工学および船舶工学と結びつけることで回転機の大幅な小型化、高出力化、高効率化に寄与する、学術的にも重要な研究課題である。燃料費の高騰、炭素税の導入などにより超伝導回転機の導入による潜在的国内市場規模の拡大傾向にあり、国際的な市場変動への対策としても有効となるため社会的意義がある。