ELF Solution new


The SEMCAD X Matterhorn ELF Solution comprises a family of quasi-static solvers for modeling extremely low frequency (ELF) and static applications, and movements in static fields. The novel implementation of electro and magnetic static and quasi-static approximations of Maxwell’s equation on a rectangular grid significantly extends the performance of SEMCAD X Matterhorn. Seamless integration into our highly advanced user-friendly GUI supports expanded applications in highly complex structures.

Streamlined workflows are available in SEMCAD X Matterhorn in the form of specific toolsets and features. The    finite element method (FEM) and finite-difference time-domain (FDTD) solvers within the solution are optimized for different approximations of Maxwell’s equations, offering improved speed and accuracy for a wide range of scenarios.

Measured data and user-defined field or current distributions can be used as sources.

The quasi-static solvers have been validated, and the uncertainties have been quantified with analytical and full-wave solutions and by comparison with measurement data. Comprehensive documentation is available for SEMCAD X Matterhorn.




Application Areas

  • Wireless power transfer (WPT) simulations for mobile, automotive, etc.
  • Optimization of system performance
  • Assessment of inductive (Qi) and resonant (AFA) systems


  • Exposure assessment
  • Coil design and optimization
  • Optimization/assessment of materials, material characterization
  • EM and electromechanical devices for industrial systems


  • WPT Compliance Assesment
  • Accurate design of capacitance and inductance
  • Busbars and power lines
  • Insulation design

Selected Features

  • 3D Magnetostatic (vector potential + Biot-Savart)
  • 3D Magneto quasistatic
  • 3D Electrostatic (ES) and electro quasi-static (EQS)
  • Coupled with thermal solvers
  • FEM-based (rectilinear grids), MPI parallelized
  • Floating metals in ES and EQS
  • Generalized Huygens source
  • Use of magnetic field data measured using MAGPy as the source to simulate induced field in a phantom


  • Automated simulation & analysis process for WPT compliance assesment
  • EM-FDTD (low MHz range), GPU accelerated
  • Ferrite models (shielding, etc.), magnetic dispersion modeling
  • Varying magnetic permeability, PEC, PMC
  • Non-homogeneous intelligent gridder engine (geometry detection)
  • Extraction of various dosimetric quantities (IEEE C95.1/95-1, ICNIRP 1998/2010)


  • Usage of external calculated fields (e.g., vector potential fields from measurements or external tools)
  • Special tools/workflows for WPT
  • Results of S-parameters extracted vs. frequency or in steady state
  • Coil wizard
  • MATCH tool, interfaces to circuit simulators
  • Interfaces to SPEAG experimental scanners