Investigation and Modeling of Local Degradation in Soft Magnetic Materials
Investigation and Modeling of Local Degradation in Soft Magnetic Materials
复制标题
软磁材料局部退化的研究和建模
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
W. Amrhein
中科院分区：
文献类型：
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作者：
M. Cossale;M. Kitzberger;G. Goldbeck;G. Bramerdorfer;D. Andessner;W. Amrhein
诸如切割、焊接或组装的制造工艺将局部机械应力和热应力引入到材料，这导致磁导率降低和磁滞损耗增加。因此，采用目录数据进行电机仿真会导致结果的准确性较低。本文论述了有效的建模的相对磁导率和铁损的软磁材料，由于制造工艺的退化。通过对一组环样品进行实验活动来评估降解概况，其中已通过放电加工去除了损坏的材料。所提出的建模方法是特别相关的，当它在数值模拟工具中实现。
Manufacturing processes such as cutting, welding or assembling introduce local mechanical and thermal stress to the material that results in a decrease of magnetic permeability and an increase of hysteresis losses. Therefore, the adoption of catalogue data for electrical machines simulation leads to a low accuracy of the results. This paper deals with effective modeling the degradation of relative permeability and iron losses in soft magnetic materials due to manufacturing processes. The degradation profile is assessed by means of experimental activity conducted on a set of ring samples where the damaged material has been removed through electrical discharge machining. The proposed modeling approach is particularly relevant when it is implemented in numerical simulation tools.