Since version 2026, Flux 3D and Flux PEEC are no longer available.

Please use SimLab to create a new 3D project or to import an existing Flux 3D project.

Please use SimLab to create a new PEEC project (not possible to import an existing Flux PEEC project).

/!\ Documentation updates are in progress – some mentions of 3D may still appear.

SimLab Tutorial: MSIM Wireless Power Transfer

Description

This study case will present how to use the new integral-method-based 3D magnetostatic solution in SimLab to model and analyze a wireless power transfer coupler (“EE” type). This solution can effectively help users analyze devices with predominant air region

The goal is to compute the mutual-inductance between the primary coil and secondary coil under disturbances.

Geometry modeling

Starting from the SimLab sketcher, users can implement 3D parametric geometry modeling in SimLab by using 2D and 3D geometric operations. The geometric modeling process for this device is as follows:

Physical description

Since the integral-method-based 3D magnetostatic solution does not need to consider the surrounding air region, in the physical definition, only the moving part (motion) and the excitation source (non-meshed coils) need to be considered, as shown below:

Study 1: mutual inductance versus distance

The direction of motion is controlled by Motion LBC. The following is the mutual inductance curve when the motion is defined in the Z-direction (distance).

Study 2: mutual inductance versus misalignment

The direction of motion is controlled by Motion LBC. The following is the mutual inductance curve when the motion is defined in the X-direction (misalignment).

Section3: mutual inductance versus movement

The direction of motion is controlled by Motion LBC. The following is the mutual inductance curve when the motion is defined in the Y-direction (movement).

Example access

All files corresponding to this example are accessible in the following link: Tutorial package.

Note: The tutorial packaging may evolve with each new version, but not mandatory. The latest version of the tutorial package will automatically work with the most recent release of SimLab.

Example: After installing the SimLab 2025 release, you can find the latest Tuto_2024.zip package. This means that the tutorial has not been updated since 2024 release, that the tutorial does not need to be updated, and that the tutorial still works in 2024.1 release and 2025 release.

Step to follow:

  • to follow the example step by step, the corresponding files are in "Example_name_StepByStep" folder containing:
    • Input folder: contains initial *.slb databases an other files needed to be able to play manually the tutorial by following the step by step document
    • Output folder: empty (contains the obtained results after to play the tutorial)
    • Tutorial folder: contains the document describing the example step by step
  • to play the tutorial by scripts, the corresponding files are in "Example_name_PlayScripts" folder containing:
    • Input folder: contains initial *.slb databases an other files needed to be able to run scripts of the tutorial
    • Output folder: empty (contains the obtained results after to play scripts of the tutorial)
    • ScriptsTutorial folder: contains script files to be able to play each analysis