Paper on “Winding Functions” accepted

Winding functionsToday, a new paper on “Winding Functions in Transient Magnetoquasistatic Field-Circuit Coupled Simulations” (together with Herbert De Gersem and Thomas Weiland) was accepted by COMPEL. The article reviews the mutual coupling of electromagnetic fields in the magnetic vector potential formulation with electric circuits in terms of (modified) nodal and (modified) loop analyses using the abstract concept of “winding functions”. Furthermore the coupling is interpreted in the spirit of Tonti diagrams.

EMF 2013: Field-Circuit Coupling and Winding Functions

EMF2013Next week I will attend the 9th International Symposium on Electric and Magnetic Fields, EMF 2013. It will be held in Bruges, Belgium, from 23 to 25 April 2013. According to the organizers “the purpose of the Symposium is to throw a bridge between recent research advances in mathematical and numerical modelling of electromagnetic fields and the growing number of industrial problems requiring such techniques”. I will talk on tuesday April 23, 2013 in the session 3 on numerical techniques (16.00 – 18.00 hrs) on “Field-Circuit Coupling Approaches in Terms of Winding Functions“.

Seminar Computational Magnetics

Eddy Currents

This term the chair of Applied Mathematics offers a seminar on Computational Magnetics. The aim is to understand scientific computing by improving our in-house magnetoquasistatic simulation package ‘FIDES‘.

All the typical tasks of applied mathematics will be covered: modeling, software design, coding, testing, simulation und visualization. This course follows up the lecture from 2010.

Flux Distribution in a Transformer

I have written a simulation package FIDES to test multi rate time integration in coupled electromagnetic field and electric circruit equations. The package is part of the COMSON Demonstrator Platform, using OCTAVE as its interpreter.
Recently I wanted to visualize my results. I used ffmpeg to produce a movie from several plots of the flux distribution inside a transformer.

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