摘要
对于分析叠片铁心中的涡流问题，利用各种等效电导率替代硅钢片实际电导率的匀质化方法是很有应用前景的。为了评估各种电导率模型，该文提出了铁心涡流场分析的二维解析验证方法，并分别基于引入各向异性或各向同性等效电导率的铁心连续体表述和实际叠片表述对涡流场进行了解析计算。通过比较连续体表述下所得到的平均磁通密度和涡流损耗值与相应由实际叠片表述所得到的精确解，对各种电导率模型的有效性和准确性在各种条件下进行了评估。为了进一步考察电导率模型对实际工程问题的适用性，利用有限元法进行了关于TEAM21面向工程基准问题的磁通和杂散场损耗计算。计算结果表明，由该文作者所提出的等效电导率模型优于其他模型。
The homogenization method is a promising approach for analyzing eddy current problems in laminated iron cores, where the electric conductivity of the steel sheet is substituted with equivalent conductivity models. Nevertheless, the accuracy and effectiveness of the equivalent conductivity models has not been fully investigated until now. In order to evaluate three conductivity models presented in literature, a verification method stemmed from the two-dimensional analytical analysis of the eddy current field in the laminated iron core is presented in this paper. The analytical calculations, based on： the continuum representation by introducing anisotropic or isotropic equivalent conductivities and on the real lamination representation, respectively, are performed. Two basic parameters reflecting eddy current effects, the eddy current loss and the magnetic flux, are considered as main evaluation indicators. They are formulated as
出处
《中国电机工程学报》
EI
CSCD
北大核心
2012年第27期I0021-I0021,197,共1页
Proceedings of the CSEE
基金
国家自然科学基金项目（51077012）：江苏省科技支撑项目（BE2009153）：南京工程学院创新基金（CKJ2010007）.
