TY - GEN
T1 - Estimation of eddy-current loss for MnZn ferrite cores
AU - Nien, Hsiau Hsian
AU - Huang, Chuan-Kuei
AU - Wang, Ming Yu
AU - Lin, Chih Wei
AU - Changchien, Shih Kuen
PY - 2012/1/1
Y1 - 2012/1/1
N2 - This paper proposes a new estimation for the eddy-current loss of MnZn ferrite cores. The eddy-current loss plays a critical role in the frequency range of 100-500 kHz, whereas the amount of the hysteresis loss dominates the core loss of magnetic devices below 100 kHz. However, the definition and calculation of eddy-current loss are not as easy or accurate. In the proposed estimation, the equivalent electrical circuit method is conducted for determining the grain conductivity and the driving current to replace the induced magnetic flux density in order to simplify measurement. The related electrical and magnetic characteristics are measured by an HP-4294 impedance analyzer. Finally, an EI30 (PC40 material system from TDK) MnZn ferrite core is used as an example to prove that this model can effectively estimate the eddy-current loss of MnZn ferrite cores at different frequencies and driving currents.
AB - This paper proposes a new estimation for the eddy-current loss of MnZn ferrite cores. The eddy-current loss plays a critical role in the frequency range of 100-500 kHz, whereas the amount of the hysteresis loss dominates the core loss of magnetic devices below 100 kHz. However, the definition and calculation of eddy-current loss are not as easy or accurate. In the proposed estimation, the equivalent electrical circuit method is conducted for determining the grain conductivity and the driving current to replace the induced magnetic flux density in order to simplify measurement. The related electrical and magnetic characteristics are measured by an HP-4294 impedance analyzer. Finally, an EI30 (PC40 material system from TDK) MnZn ferrite core is used as an example to prove that this model can effectively estimate the eddy-current loss of MnZn ferrite cores at different frequencies and driving currents.
UR - http://www.scopus.com/inward/record.url?scp=83655192210&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=83655192210&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.382.204
DO - 10.4028/www.scientific.net/AMR.382.204
M3 - Conference contribution
AN - SCOPUS:83655192210
SN - 9783037852996
T3 - Advanced Materials Research
SP - 204
EP - 209
BT - Advanced Research on Advanced Structure, Materials and Engineering, ASME 2011
T2 - 2011 International Conference on Advanced Research on Advanced Structure, Materials and Engineering, ASME 2011
Y2 - 24 December 2011 through 25 December 2011
ER -