Numerical Simulation-Based Investigation of the Limits of Different Quasistatic Models

The modeling of the capacitive phenomena, including the inductive effects becomes critical, especially in the case of a power converter with high switching frequencies, supplying an electrical device. At a low frequency, the electro-quasistatic (EQS) model is widely used to study the coupled resisti...

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Bibliographic Details
Published in:Applied sciences 2021-12, Vol.11 (23), p.11218
Main Authors: Taha, Houssein, Tang, Zuqi, Henneron, Thomas, Le Menach, Yvonnick, Salomez, Florentin, Ducreux, Jean-Pierre
Format: Article
Language:English
Subjects:
Boundary conditions
capacitive
Electric fields
electromagnetic
Electromagnetic fields
Engineering Sciences
finite-element method
inductive effects
Magnetic fields
Mathematical models
Permeability
Power converters
quasistatic models
Radiation
Radiation effects
resistive
Simulation
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Summary:The modeling of the capacitive phenomena, including the inductive effects becomes critical, especially in the case of a power converter with high switching frequencies, supplying an electrical device. At a low frequency, the electro-quasistatic (EQS) model is widely used to study the coupled resistive-capacitive effects, while the magneto-quasistatic (MQS) model is used to describe the coupled resistive-inductive effects. When the frequency increases, the Darwin model is preferred, which is able to capture the coupled resistive-capacitive-inductive effects by neglecting the radiation effects. In this work, we are interested in specifying the limits of these models, by investigating the influence of the frequency on the electromagnetic field distributions and the impedance of electromagnetic devices. Two different examples are carried out. For the first one, to validate the Darwin model, the measurement results are provided for comparison with the simulation results, which shows a good agreement. For the second one, the simulation results from three different models are compared, for both the local field distributions and the global impedances. It is shown that the EQS model can be used as an indicator to know at which frequency the Darwin model should be applied.
ISSN:2076-3417
2076-3417
DOI:10.3390/app112311218