STUDY ON MAGNETIC FIELD ANALYSIS FOR DEVELOPING HIGHLY EFFICIENCY MOTORS CONSIDERING RESIDUAL STRESS AND ROTATING FIELD

考虑残余应力和旋转场的磁场分析用于开发高效电机的研究

• 批准号: 14350146
• 负责人: TAKAHASHI Norio
• 金额: $ 5.31万
• 依托单位: OKAYAMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350146/
• 关键词: rotating flux; iron loss; residual stress; finite element method; modelling method; rotating machine; 磁界解析; 引張・圧縮応力; 焼きばめ; 回転磁界; 単板磁気試験器; 永久磁石回転機; トルク測定

The magnetic characteristics when the stress is impressed and under rotating flux are measured using single sheet testers(SST). The method for applying these data to the analysis of magnetic field of motor is investigated. The results obtained are summarized as follows :1.Establishment of Measuring System and Examination of Measurement AccuracyA digital measuring system is established, and the effect of the phase error and characteristics of gain on the measurement accuracy is examined.2.Measurement of Magnetic Characteristics Under Stress Impressed Condition and Rotating FluxThe magnetic characteristics when until about 70 Mpa is impressed are measured. The iron losses due to rotating flux, under various combinations of long and short axes of ellipse and harmonic components which are observed in the actual motors, are measured and the data base for the numerical analysis is constructed.3.Measurement of Magnetic Characteristics Under Shrink FittingThe microscopic magnetic characteristics of ring core under shrink fitting of aluminum ring are measured using a special H coil and a modified probe method. The local magnetic characteristics are examined.4.Effect of Temperature on Magnetic Characteristics of SteelThe change of magnetic characteristics with the temperature is measured by setting SST in an oven. It is shown that the iron loss is reduced with the temperature, and the rate of decrease of hysteresis loss of low grade steel is remarkable.5.Analysis of Iron Loss of Verification Model of Motor and Experimental InvestigationThe iron loss of verification motor model is analyzed using FEM considering the residual stress and magnetic property under rotating field. The problems of the analysis of iron loss is examined by comparing with the measured values.

使用单片测试仪（SST）测量了施加应力和旋转通量下的磁特性。探讨了将这些数据应用于电机磁场分析的方法。实验结果如下：1.测量系统的建立和测量精度的检验建立了数字测量系统，研究了相位误差和增益特性对测量精度的影响。2.应力加载和旋转磁通下磁特性的测量了加载到70 Mpa左右时的磁特性。测量了实际电机在椭圆长短轴及谐波分量的各种组合下的旋转磁通铁损，并建立了数值分析的数据库。3.热装下的磁特性测量采用特殊的H线圈和改进的探针法测量了铝环热装下环形铁芯的微观磁特性。4.温度对钢的磁特性的影响通过在烘箱中设置SST来测量磁特性随温度的变化。结果表明，铁损随温度的升高而减小，低钢级磁滞损耗的减小幅度较大。5.电机验证模型的铁损分析及实验研究考虑残余应力和旋转磁场下的磁性能，采用有限元法对电机验证模型的铁损进行了分析。通过与实测值的比较，对铁损分析中存在的问题进行了探讨。

项目成果

焼きばめ圧縮力による磁気特性の変化に関する検討

热压配合压缩力导致磁性能变化的研究

• 发表时间: 2004
• 期刊: 日本AEM学会 第13回MAGDAコンファレンス講演論文集
• 作者: 野上隆弘

単板磁気試験器を用いた剪断加工歪みによる磁気特性変化の測定方法の検討

利用单板磁力测试仪测量剪切应变引起的磁性能变化的方法研究

• 发表时间: 2004
• 期刊: 日本AEM学会 第13回MAGDAコンファレンス講演論文集
• 作者: Yukihiro Onoue;Yasushi Miwa;Akira Takeuchi;Yutaka Ota;Hiroyuki Ukai;Koichi Nakamura;中岡將吉
• 通讯作者: 中岡將吉

三村洋之: "二次元磁気特性測定用単板磁気試験器の励磁特性"電気学会マグネティックス研究会資料. MAG-02-188 (2002)

Hiroyuki Mimura：“测量二维磁性能的单板磁力测试仪的励磁特性”日本电气工程师学会磁学研究组的材料MAG-02-188（2002）。

Analysis of Iron Loss under Distorted Elliptical Rotating Flux

畸变椭圆旋转磁通下的铁损分析

• 发表时间: 2005
• 期刊: COMPEL 24巻
• 作者: 高橋則雄

M.Nakaoka, M.Nakano, N.Takahashi, M.Kawabe: "Investigation of Effects of Cutting Strain and Compressive Force on Magnetic Properties Using a Single Sheet Tester"The Soft Magnetic Materials 16 Conference. no.T2-28 (2003)

M.Nakaoka、M.Nakano、N.Takahashi、M.Kawabe：“使用单片测试仪研究切割应变和压缩力对磁性的影响”软磁材料 16 会议。