Inductive coupling matrix of a multiconductor system for a winding-on-core prototype

Research output: Contribution to conferencePaper, not in proceedingpeer-review


Broadband circuit models for electric machines are
effective means to understand, predict, and control the
phenomenon of conducted Electromagnetic Interference (EMI)
from immunity/susceptibility perspective. These models should
cover the capacitive and inductive coupling behavior of the
component along the frequency range of interest. Circuit models
used under generic SPICE simulation softwares are very helpful
for design-related and troubleshooting activities. In this paper
the inductive coupling for a winding on a laminated ferromagnetic
core prototype has been investigated and analyzed with
the aid of freely-available FEMM software package.
Inductive coupling analysis resulted in the generation of a
complex-numbered inductive coupling matrix expressing a
certain wiring arrangement. This is achieved by automatically
generating the desired geometry and assigning boundary
conditions for the problem under FEMM through Lua scripting
language and then solving for magneto-static and time-harmonic
magnetic cases for both self- and mutual- inductances for every
conductor in the multi-conductor system. Post-Processing of the
solutions is performed and the results are linked back to
MATLAB® and stored in a matrix format.
The inductive coupling of the winding turns, along with the
capacitive coupling, forms the resulting SPICE circuit model
which is compared against prototype measurements taken by
Rhode & Schwarz (R&S®) vector network analyzer.
Original languageEnglish
Publication statusSubmitted - 2014
Event2014 International Symposium on Electromagnetic Compatibility (EMC'14) - Tokyo
Duration: 2014 May 12 → …


Conference2014 International Symposium on Electromagnetic Compatibility (EMC'14)
Period2014/05/12 → …

Subject classification (UKÄ)

  • Other Electrical Engineering, Electronic Engineering, Information Engineering


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