Analytic computation of the magnetizing inductance of current instrument transformers under consideration of eddy currents
Analytic computation of the magnetizing inductance of current instrument transformers under consideration of eddy currents
复制标题
考虑涡流的电流互感器励磁电感的解析计算
DOI:
10.1109/tmag.2015.2438320
复制
发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Schegner P.
中科院分区:
文献类型:
--
作者:
Jäschke C;Schegner P.
In this paper, an analytical method is presented to compute the frequency-dependent magnetization inductance and iron losses resistance of the conventional equivalent circuit of current instrument transformers (CTs). This model considers the effect of eddy currents, which are more pronounced at higher frequencies. Furthermore, this model considers the characteristics of the commonly used toroidal laminated cores, which occur due to the spiraled windings of the lamination. Magnetic flux in the core is computed based on Maxwell's equations. To get a more simple and numerically stable equation for the flux, the occurring Bessel functions are approximated. Finally, the parameters of the equivalent circuit are computed using the derived equation of the magnetic flux. The results of the proposed model are presented using the parameters of a CT.
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
Daming Zhang;C. F. Foo
通讯作者:
C. F. Foo
影响因子:
2.1
作者:
Stan Zurek;Faris Al;A. J. Moses
通讯作者:
A. J. Moses
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
T. Fawzi;A. Hussein
通讯作者:
A. Hussein