Modelling of high frequency effects of laminated iron-core power inductors and reduction of parasitic capacitance

This paper proposes a general physics-based model for identifying the parasitic capacitance in medium-voltage (MV) filter inductors, which can provide analytical calculations without using empirical equations and is not restricted by the geometrical structures of inductors. The elementary capacitances of the MV inductor are identified, then the equivalent capacitances between the two terminals of the inductor are derived under different voltage potential on the core. Further, a three-terminal equivalent circuit, instead of the conventional two-terminal equivalent circuit, is proposed by using the derived capacitances. Thus, the parasitic equivalent capacitance between the terminals and core are explicitly quantified. Experimental measurements for parasitic capacitances show a good agreement with the theoretical calculations. Index terms-Physics-based modeling, parasitic capacitance, medium-voltage, filter inductors, three-terminal equivalent circuit.This work is supported by MV-BASIC project (https://www.mvbasic.et.aau.dk/), which is co-funded by the

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“…Based on [23]- [26], the lumped-circuit modeling method is used for characterizing the parasitic capacitance of the researched inductor.…”

Section: A Lumped-circuit Modeling Methodsmentioning

confidence: 99%

Physics-Based Modeling of Parasitic Capacitance in Medium-Voltage Filter Inductors

Zhao

Dalal

Jørgensen

et al. 2021

IEEE Trans. Power Electron.

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Effect of High dV/dt on Voltage Stress Across Inductor Turns and Utilization of Additive Manufacturing for Mitigation

Alsaif

Wang

2023

Arab J Sci Eng

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Study on electromagnetic characteristics of planar inductors being of weak electromagnetic radiation interference

Yin

Fan

et al. 2022

2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)

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Modelling of high frequency effects of laminated iron-core power inductors and reduction of parasitic capacitance

Cited by 5 publications

References 12 publications

Physics-Based Modeling of Parasitic Capacitance in Medium-Voltage Filter Inductors

Physics-Based Modeling of Parasitic Capacitance in Medium-Voltage Filter Inductors

Effect of High dV/dt on Voltage Stress Across Inductor Turns and Utilization of Additive Manufacturing for Mitigation

Study on electromagnetic characteristics of planar inductors being of weak electromagnetic radiation interference

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