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Time dependent excitation of a coil in 3D
Posted Jun 20, 2011, 11:03 a.m. EDT Low-Frequency Electromagnetics, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.0, Version 4.0a, Version 4.1, Version 4.2 0 Replies
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I'm trying to simulate the energization of a coil. In 2D I use the Magnetic Fields interface together with a simple Electrical Circuit with a DC voltage source defined by Vsrc=if(t<1,-150[V/s]*t,-150[V]). The coil area in the 2D model is defined as a Multi-turn coil domain excitated by a circuit. Everything seems to work OK.
However, I am unable to reproduce the same model in 3D. I've tried using a Terminal in a Magnetic and electric field interface (like in the power_inductor.mph example), but COMSOL does not correctly solve the timesteps (however, it returns no error). Using the Magnetic field interface seems impossible because I cannot excitate it with a circuit. Any idea?
Another question: are all the physics taken into account in the solution of my 2D model? I mean if the eddy currents generated in conductive metals near the coil (because of the time-varying magnetic field) are also calculated.
Thanks.
Hello Iker Rodriguez
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