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Development of Nd-Fe-B Magnet Generator for Small Hydraulic Power Station

Research Project

Project/Area Number 62550207
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 電力工学
Research InstitutionOkayama University

Principal Investigator

NAKATA Takayoshi  Okayama University, Faculty of Engineering, 工学部, 教授 (50032925)

Co-Investigator(Kenkyū-buntansha) FUJIWARA Koji  Okayama University, Faculty of Engineering, 工学部, 助手 (20190093)
TAKAHASHI Norio  Okayama University, Faculty of Engineering, 工学部, 助教授 (40108121)
Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1988: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1987: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsPermanent Magnet Generator / Neodium Magnet / 小水力発電所
Research Abstract

A method for analyzing magnetic characteristics of permanent magnet generator is established. The optimal configuration of magnets, magnetization methods Nd-Fe-B permanent magnets are investigated. The verification of numerical analysis is also carried out by experiments. The results obtained can be summarized as follows:
1. Development of Simulation Method The finite element method is improved so that the performance characteristics of permanent magnet generator can be analyzed. Moreover, a new method for analyzing the magnetic field in a capacitor-discharge impulse magnetizer is established.
2. Optimal Configurations of Magnets It is shown that the permanent magnet should be set in the radial or inclined direction in order to increase the flux density. The magnetization of permanent magnet after assembling. and one-pole magnetization are preferable.
3. Demagnetization of Magnet The optimal configuration of magnet to prevent the demagnetization due to the armature reaction under short-circuit is shown.
4. Experiments A model generator is manufactured, and the measured flux densities are compared with calculated results.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 中田高義、高橋則雄、藤原耕二: 昭和63年電気学会全国大学講演論文集. 759 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 中田高義、藤原耕二: 昭和63年電気学会全国大学講演論文集. 755 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 中田高義、高橋則雄: 昭和63年電気学会全国大学シンポジウム. S8-4 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 中田高義、高橋則雄、藤原耕二: IEEE Trans.on Magnetics. 24. 2694-2696 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 中田高義、高橋則雄: 平成元年電気学会全国大学講演論文集. 626 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 中田高義、高橋則雄: 平成元年電気学会全国大学講演論文集. 775 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T. Nakata; N. Takahashi; K. Fujiwara: "Periodic Boundary Condition for 3-D Eddy Current Analysis Using Magnetic Vector Potential" Papers of National Convention, IEE of Japan. 759 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T. Nakata; K. Fujiwara: "Periodic Boundary Condition for 3-D Magnetic Field Analysis Using Magnetic Scalar Potential" Papers of National Convention, IEE of Japan. 755 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T. Nakata; N. Takahashi: "New Trends in Finite Element Analysis of Magnetic Fields in Rotating Machines" Symposium of National Convention, IEE of Japan. 8-4 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T. Nakata; N. Takahashi; K. Fujiwara: "Periodic Boundary Condition for 3-D Magnetic Field Analysis and its Applications to Electrical Machines" IEEE Trans. on Magnetics. 24. 2694-2696 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T. Nakata; N. Takahashi: "Factors Affecting Magnetization Characteristics of Ultra-High Speed Permanent Magnet Machines" Papers of National Convention, IEE of Japan. 626 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T. Nakata; N. Takahashi: "Effects of Axis Length on Flux Distribution in Rotating Machines" Papers of National Convention, IEE of Japan. 775 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 中田高義、高橋則雄、藤原耕二: IEEE Trans.on Magnetics. 24. 2694-2696 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 中田高義、高橋則雄: 平成元年電気学会全国大会講演論文集. 626 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 中田高義、高橋則雄: 平成元年電気学会全国大会講演論文集. 775 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 中田高義, 高橋則雄, 藤原耕二: 昭和63年電気学会全国大会講演論文集. 759 (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] 中田高義, 高橋則雄, 藤原耕二: Intermag Conference, Vancouver. (1988)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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