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    • 1. 发明专利
    • Magnetic material analysis apparatus, magnetic material analysis method and computer program
    • 磁性材料分析装置,磁性材料分析方法和计算机程序
    • JP2012132828A
    • 2012-07-12
    • JP2010286223
    • 2010-12-22
    • Nippon Steel Corp新日本製鐵株式会社
    • OSUGI YASUOHIRAYAMA TAKASHITAMAKI TERUYUKI
    • G01R33/12
    • PROBLEM TO BE SOLVED: To quickly and highly accurately determine iron loss when determining an optimum shape of a soft magnetic material to be used for an electric apparatus based on the iron loss of the soft magnetic material considering influence of stress.SOLUTION: A magnetic flux density vector B in each fine region s is calculated based on a B-H curve in which stress σ is 0. Then, equivalent stress σξ in each fine region s is calculated. Then magnetic field size Hcorresponding to the size Bof the magnetic flux density vector B in each fine region s is determined based on the B-H curve in which stress σ is 0. Then, the size Bof the magnetic density vector B in each fine region s when the size of a magnetic field is Hin the B-H curve when the stress σ is the equivalent stress σξ is determined as the size of magnetic flux density corresponding to the equivalent stress σξ. Then, iron loss W of a stator core 801 is calculated from the size Bof the magnetic flux density in each fine region s. These calculations are performed by changing a center angle γ to find out an optimum shape of the stator core.
    • 要解决的问题:考虑到应力的影响,基于软磁性材料的铁损确定用于电气设备的软磁性材料的最佳形状时,快速高效地确定铁损。 解决方案:基于应力σ为0的B-H曲线计算每个微细区域s中的磁通密度矢量B.然后计算每个细小区域s中的等效应力σξ。 然后,确定与每个精细区域s中的磁通密度矢量B的尺寸B 0 对应的磁场尺寸H 0 基于应力σ为0的BH曲线,然后,当磁场的尺寸为H时,每个细小区域s的磁密度矢量B的尺寸B 1 当应力σ为等效应力时,BH曲线中的 0 确定为对应于等效应力σξ的磁通密度的大小。 然后,从每个精细区域s中的磁通密度的大小B 1 SB计算定子铁芯801的铁损W。 通过改变中心角γ来进行这些计算,以找出定子铁心的最佳形状。 版权所有(C)2012,JPO&INPIT
    • 9. 发明专利
    • Core loss optimizing system
    • 核心损失优化系统
    • JP2009052914A
    • 2009-03-12
    • JP2007217481
    • 2007-08-23
    • Nippon Steel Corp新日本製鐵株式会社
    • HIRAYAMA TAKASHIFUJISAKI KEISUKEKAWACHI TAKESHIYAMAGATA MITSUHARU
    • G01R33/02G01R33/10H01F41/00H02K1/06
    • PROBLEM TO BE SOLVED: To shorten the computation time of a core loss optimizing system which computes core losses, by solving the Maxwell's equations taking into consideration the effects of anisotropy and stresses on the magnetic permeability, and magnetic reluctivity of soft magnetic materials.
      SOLUTION: The core loss optimizing system comprises a database for storing an H-B curve and a database for storing a W-B curve using the angle θ formed between a predetermined direction and the direction of the magnetic flux density of a soft magnetic material in minute region and stress σ as anisotropy parameters; a magnetic flux density vector determination means for determining the angle θ and the magnitude B of the magnetic flux density, on the basis of the Maxwell's equations in minute region; a core loss computation means for computing core losses of the minute. A core loss summation means for determining the sum of the core losses of the minute region, and corresponding stress, in the direction of a magnetic flux density vector B, is uses as the stress.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了缩短计算磁芯损耗的磁芯损耗优化系统的计算时间,通过考虑到各向异性和应力对磁导率的影响,以及软磁材料磁阻的影响,求解了麦克斯韦方程 。 解决方案:磁芯损耗优化系统包括用于存储HB曲线的数据库和用于使用在预定方向和软磁性材料的磁通密度方向之间形成的角度θ存储WB曲线的数据库,分钟 区域和应力σ作为各向异性参数; 磁通密度矢量确定装置,用于基于微小区域中的麦克斯韦方程确定磁通密度的角度θ和幅度B; 用于计算分钟的核心损耗的核心损耗计算装置。 用于确定微小区域的磁芯损耗和磁通密度向量B的方向上的相应应力之和的磁芯损耗求和装置用作应力。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Highly efficient and low-noise motor
    • 高效低噪声电机
    • JP2008278623A
    • 2008-11-13
    • JP2007118840
    • 2007-04-27
    • Nippon Steel Corp新日本製鐵株式会社
    • MOGI TAKASHIYABUMOTO MASAOHIRAYAMA TAKASHIYAMAGATA MITSUHARU
    • H02K1/02H02K1/06H02K1/18
    • Y02T10/641
    • PROBLEM TO BE SOLVED: To achieve the improvement of efficiency by further increasing flux density and low vibration, which is a common target to motors, in a magnetically soft material having a dust core body formed by compression molding of magnetic powder, and to provide a highly efficient and low noise motor using such a magnetically soft material.
      SOLUTION: In a magnetic core of a motor, magnetic steel sheet is arranged inside so as to be in parallel to magnetic flux flowing direction and a stator formed by covering the magnetic steel sheet with the magnetic powder and a lubricant is used. When the stator is of a three-dimensional structure, the magnetic steel sheet is arranged by bending so as to go along the magnetic flux flowing direction without cutting it.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:通过进一步提高磁通密度和低振动来实现效率的提高,磁通密度和低振动是电动机的共同目标,在具有通过磁粉的压缩成型形成的防尘芯体的磁性软材料中,以及 以提供使用这种磁性软材料的高效低噪声电动机。 解决方案:在电动机的磁芯中,将电磁钢板布置成与磁通流动方向平行,并且通过用磁性粉末覆盖电磁钢板形成的定子,并使用润滑剂。 当定子是三维结构时,电磁钢板沿着磁通流动方向弯曲而被设置而不会被切割。 版权所有(C)2009,JPO&INPIT