The analysis of the eddy-current field in the wound core widely used in the field of transformer energy conservation is taken as the theme. Adopting the homogenisation idea to consider the unique geometry of the wound core and features of its equivalent multi-stage circular cross-section magnetic boundary, a homogeneous model consisting of a columnar material with continuous homogeneous electromagnetic anisotropy is established by deriving the Maxwell equations of the magnetic quasi-static field in the columnar coordinate system. Finally, a homogeneous fine element model for the eddy-current field in the wound core is established and the accuracy of the model has been verified by the test platform. The result shows that the homogeneous model can be effectively used for the analysis of the eddy-current field in the wound core, and the error of calculating the eddy-current loss under different excitation conditions is less than 6% under the premise of extremely saving the engineering calculation cost, which will help improve the operational performance of the wound core and contribute to the energy-saving goal of the high-voltage equipment.

中文翻译：

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单相卷铁心涡流场电磁各向异性均匀模型

以变​​压器节能领域广泛使用的卷铁心涡流场分析为主题。采用均质化思想，考虑卷铁心独特的几何形状及其等效多级圆形截面磁边界的特征，通过推导磁芯的麦克斯韦方程组，建立了由具有连续均匀电磁各向异性的柱状材料组成的均质模型。柱状坐标系中的准静态磁场。最后建立了卷铁心涡流场的均匀精细单元模型，并通过测试平台验证了模型的准确性。结果表明，均匀模型可以有效地用于卷铁心涡流场的分析，在极大节省的前提下，不同励磁条件下涡流损耗的计算误差小于6%。工程计算成本，有利于提高卷铁心的运行性能，有助于高压设备的节能目标。