Experimental Characterization of High-Temperature Superconducting Linear Motors for Application to Ropeless Elevators

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K04332
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 21010:Power engineering-related
• Research Institution: Kagoshima University
• Principal Investigator: HIRAYAMA TADASHI 鹿児島大学, 理工学域工学系, 助教 (60560109)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: リニアモータ / スイッチトリラクタンスモータ / 高温超伝導 / リープレスエレベータ / 有限要素法 / シミュレーション / 効率

Outline of Final Research Achievements

I have been engaged in research to evaluate the characteristics of the high-temperature superconducting linear switched reluctance motor (LSRM) for application to the next-generation ropeless linear elevator. First, the experimental machine with a total length of about 1.3 m, a thrust of 10 N, and a speed of 0.3 m/s was designed using the finite element analysis and fabricated excluding the moving part. In addition, the drive system consisting of the inverter system and the DSP control system, and the power measurement system were fabricated to evaluate the characteristics by experiments. Furthermore, the performance was compared with that of the conventional normal-conducting LSRM for the ropeless linear elevator by the finite element analysis, and it was clarified that the superconducting coil needs to be low-loss to improve the efficiency, but has the advantage of significantly improving the thrust density compared to the normal-conducting LSRM.

Free Research Field

電気機器

Academic Significance and Societal Importance of the Research Achievements

高温超伝導テープ線材をリニアモータのコイルとして応用する例は少なく，本研究によってその特性を一部ではあるが明らかにすることができた。これにより，高温超伝導テープ線材をリニアスイッチトリラクタンスモータへ応用した際の優位性や改善すべき点が明らかになり，リニアモータ開発にとって有用なデータとなる。また，高温超伝導テープ線材をリニアモータに応用する設計が検討されたことで，超伝導応用の分野にも貢献できた。さらに，社会的に改めて検討されつつあるロープレスエレベータの発展にも貢献できるものと期待される。