Next Article in Journal
Life Cycle Environmental Costs of Buildings
Next Article in Special Issue
FPGA-Based System for Electromagnetic Interference Evaluation in Random Modulated DC/DC Converters
Previous Article in Journal
‘Sticky’ Policies—Three Country Cases on Long-Term Commitment and Rooting of RE Policy Goals
Previous Article in Special Issue
A Parallel Estimation System of Stator Resistance and Rotor Speed for Active Disturbance Rejection Control of Six-Phase Induction Motor
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Energies
Volume 13
Issue 6
10.3390/en13061352
energies-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Effective Permeability of Multi Air Gap Ferrite Core 3-Phase Medium Frequency Transformer in Isolated DC-DC Converters

by
Piotr Dworakowski
1,*,
Andrzej Wilk
2,
Michal Michna
2,
Bruno Lefebvre
1,
Fabien Sixdenier
3 and
Michel Mermet-Guyennet
1
1
Power Electronics & Converters, SuperGrid Institute, 69100 Villeurbanne, France
2
Faculty of Electrical and Control Engineering, Gdańsk University of Technology, 80-233 Gdansk, Poland
3
Univ Lyon, Université Claude Bernard Lyon 1, INSA Lyon, ECLyon, CNRS, Ampère, 69100 Villeurbanne, France
*
Author to whom correspondence should be addressed.
Energies 2020, 13(6), 1352; https://doi.org/10.3390/en13061352
Submission received: 4 February 2020 / Revised: 5 March 2020 / Accepted: 11 March 2020 / Published: 14 March 2020
(This article belongs to the Special Issue Industrial and Technological Applications of Power Electronics Systems)
Browse Figures
Versions Notes

Abstract

The magnetizing inductance of the medium frequency transformer (MFT) impacts the performance of the isolated dc-dc power converters. The ferrite material is considered for high power transformers but it requires an assembly of type “I” cores resulting in a multi air gap structure of the magnetic core. The authors claim that the multiple air gaps are randomly distributed and that the average air gap length is unpredictable at the industrial design stage. As a consequence, the required effective magnetic permeability and the magnetizing inductance are difficult to achieve within reasonable error margins. This article presents the measurements of the equivalent B(H) and the equivalent magnetic permeability of two three-phase MFT prototypes. The measured equivalent B(H) is used in an FEM simulation and compared against a no load test of a 100 kW isolated dc-dc converter showing a good fit within a 10% error. Further analysis leads to the demonstration that the equivalent magnetic permeability and the average air gap length are nonlinear functions of the number of air gaps. The proposed exponential scaling function enables rapid estimation of the magnetizing inductance based on the ferrite material datasheet only.
Keywords: average air gap length; dc-dc power converters; gapped magnetic core; magnetic permeability; magnetizing inductance; medium frequency transformer average air gap length; dc-dc power converters; gapped magnetic core; magnetic permeability; magnetizing inductance; medium frequency transformer
Graphical Abstract

Share and Cite

MDPI and ACS Style

Dworakowski, P.; Wilk, A.; Michna, M.; Lefebvre, B.; Sixdenier, F.; Mermet-Guyennet, M. Effective Permeability of Multi Air Gap Ferrite Core 3-Phase Medium Frequency Transformer in Isolated DC-DC Converters. Energies 2020, 13, 1352. https://doi.org/10.3390/en13061352

AMA Style

Dworakowski P, Wilk A, Michna M, Lefebvre B, Sixdenier F, Mermet-Guyennet M. Effective Permeability of Multi Air Gap Ferrite Core 3-Phase Medium Frequency Transformer in Isolated DC-DC Converters. Energies. 2020; 13(6):1352. https://doi.org/10.3390/en13061352

Chicago/Turabian Style

Dworakowski, Piotr, Andrzej Wilk, Michal Michna, Bruno Lefebvre, Fabien Sixdenier, and Michel Mermet-Guyennet. 2020. "Effective Permeability of Multi Air Gap Ferrite Core 3-Phase Medium Frequency Transformer in Isolated DC-DC Converters" Energies 13, no. 6: 1352. https://doi.org/10.3390/en13061352

APA Style

Dworakowski, P., Wilk, A., Michna, M., Lefebvre, B., Sixdenier, F., & Mermet-Guyennet, M. (2020). Effective Permeability of Multi Air Gap Ferrite Core 3-Phase Medium Frequency Transformer in Isolated DC-DC Converters. Energies, 13(6), 1352. https://doi.org/10.3390/en13061352

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop