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

小型水电站用钕铁硼永磁发电机的研制

• 批准号: 62550207
• 负责人: NAKATA Takayoshi
• 金额: $ 1.22万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550207/
• 关键词: Permanent Magnet Generator; Neodium Magnet; 小水力発電所

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.

建立了永磁发电机磁特性分析方法。研究了Nd-Fe-B永磁体的最佳磁体结构、磁化方式。并通过实验对数值分析进行了验证。主要研究结果如下：1.仿真方法的发展对有限元法进行了改进，使其能够分析永磁发电机的性能特性。建立了一种分析电容放电式脉冲磁化器磁场的新方法.永磁体的最佳配置结果表明，为了提高磁通密度，永磁体应沿径向或倾斜方向设置。装配后永磁体的磁化。和单极磁化是优选的。磁体的退磁为防止短路时电枢反应引起的退磁，给出了磁体的最佳配置.实验制作了模型发电机，并将测量的磁通密度与计算结果进行了比较。

项目成果

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)

Takayoshi Nakata、Norio Takahashi：1989 年日本电气工程师学会全国会议论文集 775 (1989)。

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)

Takayoshi Nakata、Koji Fujiwara：日本电气工程师学会国立大学讲座论文集，1988。755 (1988)

T. Nakata; N. Takahashi: "Effects of Axis Length on Flux Distribution in Rotating Machines" Papers of National Convention, IEE of Japan. 775 (1989)

T.中田；

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)

Takayoshi Nakata、Norio Takahashi：1989 年日本电气工程师学会全国会议论文集 626 (1989)。

中田高義, 高橋則雄, 藤原耕二: Intermag Conference, Vancouver. (1988)

Takayoshi Nakata、Norio Takahashi、Koji Fujiwara：Intermag 会议，温哥华（1988 年）。