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Development of a high-efficiency and low-loss motor considering the two-dimensional (vector) magnetic properties

考虑二维（矢量）磁特性的高效低损耗电机的开发

基本信息

批准号：
13650312
负责人：
ENOKIZONO Masato
金额：
$ 2.3万
依托单位：
Oita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

项目摘要

This research has been carried out to develop a new high-efficient and low-loss motor considering the two-dimensional magnetic properties, which is the relationship between the magnetic field intensity vector and the magnetic field strength vector in magnetic materials. The vector properties for the electrical steel sheets such as the oriented silicon steel sheets were measured by means of the vector hysteresis analyzer developed in our laboratory. To introduce the vector magnetic properties into the magnetic field analysis, we have proposed the E&SS modeling as a numerical modeling used in the finite element analysis. By using this approach we have made clear loss distributions in some stator core construction models. As a result, it was shown that the axis ratio of the rotating flux loci (the ratio of the minor axis component with respect to the major axis component) should be lower than 0.3 and the incline angle of the flux density vector from the magnetizing easy axis of the core material should be less than 30 degrees, in the use of the motor core due to increasing rotational power losses.It was difficult to obtain a good performance by only replacing the conventional non-oriented material with a high-grade material, because the impedance of the primary circuit increased with the increase of the permeability under the constant exciting voltage conditions. To keep high-flux density conditions in the designing of a high-efficiency motor, it is necessary to develop a new designing method in the use of high exciting voltages and constant current conditions.

本研究旨在开发一种考虑二维磁特性的新型高效低损耗电机，二维磁特性是磁场强度矢量与磁性材料中磁场强度矢量之间的关系。利用本实验室研制的矢量磁滞分析仪对取向硅钢等电工钢板的矢量特性进行了测量。为了将矢量磁特性引入到磁场分析中，我们提出了E&SS模型作为有限元分析中使用的数值模型。利用这种方法，我们已经清楚地了解了一些定子铁芯结构模型的损耗分布。结果表明，旋转磁通轨迹的轴比（短轴分量相对于长轴分量的比率）应当低于0.3并且磁通密度矢量与芯材料的易磁化轴的倾斜角应当小于30度，仅通过用高级材料代替传统的无取向材料难以获得良好的性能，因为在恒定励磁电压条件下，初级电路的阻抗随着磁导率的增加而增加。为了在设计高效电机时保持高磁密条件，有必要开发一种新的设计方法，以使用高励磁电压和恒流条件。