磁滞损耗 是铁磁体等在反复磁化过程中因磁滞现象而消耗的能量。磁滞指铁磁材料的磁性状态变化时,磁化强度滞后于磁场强度,它的磁通密度B与磁场强度 H之间呈现磁滞回线关系。经一次循环,每单位体积铁芯中的磁滞损耗正比于磁滞回线的面积。这部分能量转化为热能,使设备升温,效率降低,它是电气设备中铁损的组成部分,这在交流电机一类设备中是不希望的。软磁材料的磁滞回线狭窄,其磁滞损耗相对较小。硅钢片因此而广泛应用于电机、变压器、继电器等设备中。
得出磁滞损耗功率与频率、磁通密度及温度的经验公式。
An empirical formula describing the dependence of the power of hysteresis loss on frequency, magnetic flux density and temperature was derived.
根据实验结果对两种样品的性能进行了对比分析,并讨论了一些与磁滞损耗相关的问题。
Based on the experimental results, the properties of two samples were compared and analyzed, and some questions pertinent to magnetic hysteresis loss were discussed.
该方法适用于估测高次谐波场对磁滞损耗的影响,降低能量损耗的偏转系统磁芯结构的优化,磁性材料的选择等。
This method may possibly be used to estimate influence of high order harmonic field on hysteresis loss to optimize the design of deflection yoke ring and to develop energy saving ferrite materials.
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