Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Time dependent excitation of a coil in 3D
Posted 2011/06/20 11:03 GMT-4 Low-Frequency Electromagnetics, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.0, Version 4.0a, Version 4.1, Version 4.2 0 Replies
Please login with a confirmed email address before reporting spam
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
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.