Basic research on superconducting induction rotating machines for electric power equipment applications

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K04356
• 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: Sophia University
• Principal Investigator: TAKAO Tomoaki 上智大学, 理工学部, 教授 (30245790)
• Co-Investigator(Kenkyū-buntansha): 坂本 織江 上智大学, 理工学部, 准教授 (40443262) ; 福井 聡 新潟大学, 自然科学系, 教授 (70293199)
• Project Period (FY): 2019-04-01 – 2024-03-31
• Keywords: 高温超伝導 / 超伝導誘導機 / UPS / 風力発電

Outline of Final Research Achievements

In this research project, dynamic characteristics of a superconducting induction machine with high temperature superconducting (HTS) secondary windings (SIM) are investigated by experiments and numerical simulation, and feasibility studies are conducted on the applications of SIM to fly-wheel-UPSs (FWUPS) and wind power generator (WPG). The results are summarized as follows. 1) UPS function was experimentally shown using an experimental model of 3 kW class SIM with Bi2223 HTS iron-cored secondary and Cu armature windings cooled by liquid nitrogen. 2) feasibility of a large-scale FWUPS using SIM is investigated based of a conceptual model of 3 MVA SIM and its feasibility was shown. 3) a conceptual model of WPG using 5 MVA class SIM is designed and feasibility of the SIM-WPG is shown.

Free Research Field

超伝導工学

Academic Significance and Societal Importance of the Research Achievements

大型のUPSは電池式，フライホイール式に関わらず高価な半導体電力変換装置を必要とする。これに対して，SIM を用いたFWUPSは構造が簡単で，電力変換装置を用いず，電源ラインにつないでおくだけでUPS効果が得られるため，導入コストの低減が期待できる。また，SIMを用いることにより軽量な大型風力発電装置の実現が期待できる。
本研究により，大型UPS，WPGへのSIMの適用性が示され，社会的意義は大きい。また，SIMの動的特性を解析する数値シミュレーションモデルが開発され，学術的意義もある。