Homogenization of Form-Wound Windings in Frequency and Time Domain Finite-Element Modeling of Electrical Machines
Homogenization of Form-Wound Windings in Frequency and Time Domain Finite-Element Modeling of Electrical Machines
复制标题
电机频域和时域有限元建模中模绕绕组的均匀化
DOI：
10.1109/tmag.2010.2043515
复制
发表时间：
2010
影响因子：
2.1
通讯作者：
R. Sabariego
中科院分区：
文献类型：
--
作者：
J. Gyselinck;P. Dular;N. Sadowski;P. Kuo;R. Sabariego
在本文中，作者处理的有限元（FE）建模的涡流效应的形成缠绕绕组的电机使用以前提出的一般频域和时域均匀化方法。通过演示和验证，一个现实生活中的1250千瓦感应电机与双层定子绕组。首先通过一个简单的低成本有限元模型量化了一个定子导体（铜条）中的趋肤效应和邻近效应，从而得到均匀化绕组的复杂且与频率相关的系数（邻近效应的磁导率和趋肤效应的电导率或电阻）。这些复杂的系数随后被转换成实值和常数系数，允许时域均匀化时，在FE模型中引入有限数量的额外的自由度。与均匀化模型（考虑一个导体或一个完整的插槽）得到的所有结果同意以及与蛮力的方法（建模和精细离散每个导体）产生的。
In this paper, the authors deal with the finite-element (FE) modeling of eddy-current effects in form-wound windings of electrical machines using a previously proposed general frequency- and time-domain homogenization method. By way of demonstration and validation, a real-life 1250-kW induction machine with double-layer stator winding is considered. The skin and proximity effects in one stator conductor (copper bar) are first quantified by means of a simple low-cost FE model, leading to complex and frequency-dependent coefficients for the homogenized winding (reluctivity for proximity effect and conductivity or resistance for skin effect). These complex coefficients are subsequently translated into real-valued and constant coefficients that allow for time-domain homogenization when introducing a limited number of additional degrees of freedom in the FE model. All results obtained with the homogenized model (considering one conductor or a complete slot) agree well with those produced by a brute-force approach (modeling and finely discretizing each conductor).