Open AccessSimplified ferrite core loss separation model for switched mode power converter
Author(s) -
Yan Zhou,
Aiming Sun
Publication year - 2016
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2015.0146
Subject(s) - eddy current , ferrite core , ferrite (magnet) , power loss , excitation , materials science , power (physics) , mechanics , control theory (sociology) , nuclear magnetic resonance , electronic engineering , electrical engineering , computer science , composite material , engineering , physics , thermodynamics , electromagnetic coil , control (management) , artificial intelligence
Without depending on numerous material parameters or any special testing equipment, this study proposes a simplified and generalised ferrite core loss separation model for power magnetic components in switched mode power converter. The components of hysteresis loss and eddy current loss are treated as two packages which can be directly calculated from the loss data supplied by manufacturers. The value of resistivity changes with the frequency and the temperature, and the proposed separation method can alleviate the effect of resistivity on calculating the eddy current component. Based on the different isolating layers in ferrite materials, a correction coefficient is proposed to define the effect of cross‐sectional area has on the eddy current loss. The experiments with both sinusoidal excitation and square excitation verify the theoretical results. The proposed method shows a quantitatively theoretical tool for predicting the power loss in ferrite core.