变压器束绞圆导线线圈中涡流损耗的研究

Numerical Analysis of Eddy Current Losses for Power Transformer Windings with Round Stranded Conductors

在考虑集肤效应和邻近效应的前提下 ,计算了电缆绕组变压器线圈的涡流损耗。首次提出了集肤效应损耗系数和邻近效应损耗分裂导线系数概念 ,并通过一定的数据样本拟合了这两个系数的多项式表达式 ,用该表达式计算了某一三相电缆绕组变压器线圈的涡流损耗。

While skin effect and proximity effect are considered, the eddy current losses for power transformer windings with stranded conductor are studied. Two new concepts are given firstly, that are loss coefficient of skin effect and splitting conductor coefficient of proximity effect loss. They are obtained by polynomial expression with least error linear regression theory. Using these two coefficients, the eddy current loss in coaxially insulated windings of power transformer is simulated. It is shown that splitting windings conductor of power transformer insulated mutually cna decrease eddy current losses of winding sharply.