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Investigation of the influence of the frequency dependent inductance on converter operation
This project contains the use of analytical models to calculate the frequency-dependent inductance of inductors over a wide frequency range. Also part are the investigation and application of suitable methods in order to perform time-domain circuit simulations of the converter system with a varying, frequency-dependent inductance. The goal is to develop simplified models that predict the frequency-dependent behavior of the converter system the inductor is employed in.
Keywords: Magnetic Components, Inductor, Modelling, Design, Magnetic Field, Power losses
In converter systems, for example a Buck converter, inductors often play
an important role. Specifically, its inductance value is crucial for a proper
converter operation.
Operating inductors at high frequencies could result in a reduction of the
inductance value by up to 25 %. This is due to the shielding effect in foil
windings. This inductance reduction affects the converter operation, more
specifically, the current ripple.
In this project, you will use analytical models to calculate the frequencydependent
inductance of inductors over a wide frequency range. Based
on these models, you will investigate and apply suitable methods in order
to perform time-domain circuit simulations of the converter system with a
varying, frequency-dependent inductance. Furthermore, you will work on
developing simplified models that predict the frequency-dependent behavior
of the converter system the inductor is employed in.
In converter systems, for example a Buck converter, inductors often play an important role. Specifically, its inductance value is crucial for a proper converter operation. Operating inductors at high frequencies could result in a reduction of the inductance value by up to 25 %. This is due to the shielding effect in foil windings. This inductance reduction affects the converter operation, more specifically, the current ripple. In this project, you will use analytical models to calculate the frequencydependent inductance of inductors over a wide frequency range. Based on these models, you will investigate and apply suitable methods in order to perform time-domain circuit simulations of the converter system with a varying, frequency-dependent inductance. Furthermore, you will work on developing simplified models that predict the frequency-dependent behavior of the converter system the inductor is employed in.
T. Ewald, ETL F18, ewald@hpe.ee.ethz.ch
T. Ewald, ETL F18, ewald@hpe.ee.ethz.ch
20% Implementation
35% Modelling
10% Testing
35% Theory
20% Implementation 35% Modelling 10% Testing 35% Theory
Interest in analytical modelling, Interest in field calculation, Understanding of converters, Experience in Matlab/Comsol, Working language: English/German
Interest in analytical modelling, Interest in field calculation, Understanding of converters, Experience in Matlab/Comsol, Working language: English/German
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