Experimental evaluation of the relationship between dimensional dependencies of MnZn ferrites and filter inductor impedances

This study investigates the relationship between filter inductor impedance and dimensional resonance of MnZn ferrite. Experimental results clarify that multiple factors affect inductor impedance resonances. These can be classified into three factors: the inherent characteristics of a magnetic materi...

Full description

Saved in:
Bibliographic Details
Published in:Electrical engineering in Japan 2021-06, Vol.214 (2), p.n/a
Main Authors: Takahashi, Shotaro, Ogasawara, Satoshi, Takemoto, Masatsugu, Orikawa, Koji, Tamate, Michio
Format: Article
Language:English
Subjects:
complex permeability
dimensional resonance
EMI
Ferrites
filter inductor
Frequency ranges
Impedance
Magnetic cores
Magnetic materials
Magnetic resonance
MnZn ferrite
Resonance
Winding
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study investigates the relationship between filter inductor impedance and dimensional resonance of MnZn ferrite. Experimental results clarify that multiple factors affect inductor impedance resonances. These can be classified into three factors: the inherent characteristics of a magnetic material, self‐resonance due to winding stray capacitance, and winding that acts as a distributed constant line. Next, based on the measurement results, the dimensional dependencies of complex permeabilities (dimensional resonance) and the influence of dimensional resonance on inductor impedance are discussed in detail. Finally, this study verifies that the influence of dimensional resonance on complex permeability can be mitigated, and filter inductor impedance can be increased in the high frequency range by core lamination. All experiments are performed using off‐the‐shelf magnetic core products.
ISSN:0424-7760
1520-6416
DOI:10.1002/eej.23302