成果報告書詳細
管理番号20120000001080
タイトル*平成21年度中間年報 省エネルギー革新技術開発事業 挑戦研究 冷凍機一体型高温超電導誘導同期駆動システムの開発研究
公開日2012/10/31
報告書年度2009 - 2009
委託先名国立大学法人京都大学 アイシン精機株式会社
プロジェクト番号P09015
部署名省エネルギー部
和文要約和文要約等以下本編抜粋:1. 研究開発の内容及び成果等
本研究開発では、革新的高温超電導回転機・冷却技術(高温超電導誘導同期回転機、小型高効率冷凍機、およびそれらを統合した最適冷却構造・方式)を適用し、磁石レス、高効率、かつ高出力密度の電気式駆動システムの実現を目指した研究開発を行っている。
英文要約Title: Strategic Development of Energy Conservation Technology A Challenge Study Phase Research and Development of High Temperature Superconducting Induction-Synchronous Drive System United with Cryocooler in One Body (FY2009-FY2010) FY2009 Annual Report
In this project, high output power density electric drive system with no permanent magnet and high efficiency has been developed with the use of innovative high temperature superconductor(HTS) rotating machine and cooling technology. The HTS-ISM is small in scale, maintaining high efficiency cryocooler, optimal cooling structure, and method. Results of FY2009 are summarized as follows: (1) Using the HTS tapes, optimal structure of stator windings is determined for the realization of fully superconducting HTS-ISM. Firstly, the influence of current transport property of the HTS tapes on the bending radius as well as the installation in the iron core is experimentally investigated in detail. And then, geometrical structure of the stator windings is created with the use of racetrack double-pancake coils. Next, from the point of mechanical property and the core loss at cryogenic temperature, some steel materials are selected for the development of the HTS-ISM’s core. In addition, rough design for the class of 20 kW as well as 50 kW full-scale HTS-ISM is completed. Finally, the small-scale fully superconducting HTS-ISM is fabricated, and then the rotation try is succeeded for the first time. (2) To test fabricated HTS-ISM, the drive system by use of PWM inverter is developed. The realized system can simulate the performance of the drive method for the HTS-ISM on computer software, and then such drive method can directly be utilized for the real experiment of the developed machine. The Variable-Voltage-Variable-Frequency (VVVF) control of the HTS-ISM, of which rotor windings are fabricated with HTS wires, has successfully been carried out. (3) Design of small scale cryocooler is carried out with the analysis on thermoacoustics in order to obtain cooling capacity of 200 W at 77 K. As the result, essential specifications of a cold head and a compressor are defined. Then, a compressor designed with a moving-magnet type linear motor is fabricated. Because of its potential high efficiency, Stirling type cryocoolder is determined. The system is assembled and is to be tested in FY2010. (4) Thermal insulation structure of a cryostat to install a fabricated HTS-ISM is investigated in order to minimize thermal invasion from outside. Then, a cryostat in detailed structure is designed. Based upon the aforementioned results, a 20 kW class HTS-ISM drive system is scheduled to be designed, fabricated, and tested in FY2010.
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