Accurate prediction of core losses has been a crucial aspect in the field of electromagnetics for several decades. Extensive experimental results have shown that the core loss under harmonic excitation is more complicated than that under sinusoidal excitations, which means that the traditional core loss calculation methods are no longer applicable under distorted flux. In order to determine an efficient numerical approach when minor hysteresis loops occur, a harmonic magnetic test platform is used to study the effect of the variation of B–H properties on the iron loss and magnetic flux density of grain oriented silicon steel lamination under different supply voltages. A simple method, which could be used to predict the iron losses in thin laminations due to a number of non-sinusoidal waveforms with or without minor loops, for estimating the iron loss based on the loss separation method is proposed. The errors are substantially lower than those of conventional models while saving time.

中文翻译：

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具有较小磁滞回线的叠层钢结构在磁通密度失真下的铁损计算

几十年来，准确预测铁芯损耗一直是电磁学领域的关键方面。大量的实验结果表明，谐波激励下的铁损比正弦激励下的铁损要复杂得多，这意味着传统的铁损计算方法不再适用于畸变的通量。为了确定发生微小磁滞回线时的有效数值方法，使用谐波磁测试平台来研究B – H变化的影响电压下不同取向硅钢片的铁损和磁通密度的特性 提出了一种简单的方法，用于基于损耗分离方法估算薄铁片中的铁损，该薄铁片是由具有或没有小环路的许多非正弦波形引起的，用于估算铁损。误差大大低于传统模型，同时节省了时间。