EM Workbench/de

Einleitung

Der Arbeitsbereich EM (ElectroMagnetic) stellt das CAD front-end interface für einige open source free solvers zur Verfügung. Aktuell unterstützt es den 3D magnetoquasistatic impedance solver FastHenry (d.h. Induktivitäts- und Widerstandsermittlung für "niedrige" Frequenzen). Unterstützung für den 3D electrostatic capacitance solver FasterCap ist in Arbeit.

Installation

Der Arbeitsbereich EM ist ein externer Arbeitsbereich, der mit FreeCADs Addon-Manager installiert werden kann. Dies kann über den Menüeintrag Werkzeuge → Addon-Manager erfolgen.

Die Löser für elektromagnetische Zusammenhänge FastHenry2 und FasterCap müssen separat installiert werden. Ihre Binärcodes und auch die Quelldateien sind frei erhältlich von FastFieldSolvers.

Anwendung

FastHenry

FastHenry is a software for computing the frequency-dependant self and mutual inductances and resistances of a generic tridimensional conductive structure, in the magnetoquasistatic approximation. It can also generate Spice-compatible, multiple-frequency equivalent-circuit models.

Knowledge of FastHenry is a pre-condition for the proficient usage of the ElectroMagnetic Workbench for FastHenry. We suggest you to read the original FastHenry User's manual and play a bit with the sample files that are provided with the installation.

FasterCap

FasterCap is a powerful three- and two-dimensional capacitance extraction program.

Knowledge of FasterCap is a pre-condition for the proficient usage of the ElectroMagnetic Workbench for FasterCap. We suggest you to read the original FasterCap help file and play a bit with the sample files that are provided with the installation.

FastHenry-Werkzeuge

These are tools used to interface with FastHenry:

• FHNode: Creates a FastHenry Node object
• FHSegment: Creates a FastHenry Segment object
• FHPath: Creates a FastHenry Path object
• FHPlane: Creates a FastHenry uniform conductive Plane object
• FHPlaneHole: Creates a FastHenry uniform conductive plane Hole object
• FHPlaneAddRemoveNodeHole: Add or Remove a Node or a Hole from/to a conductive plane
• FHEquiv: Creates a FastHenry node Equivalence object
• FHPort: Creates a FastHenry Port object
• FHSolver: Creates a FastHenry Solver object
• FHInputFIle: Creates a FastHenry Input File

FasterCap-Werkzeuge

At present, FasterCap is supported via some Macros in the Export_mesh.py file available in the ElectroMagnetic Workbench GitHub source code.

API

Die EM-Werkzeug können in Makros und von der Python-Konsole aus durch Verwendung der EM-API genutzt werden:

Tutorien

Some video tutorials are available for the EM Workbench beta versions:

• FreeCAD ElectroMagnetic Workbench tutorial - Getting started
• FreeCAD ElectroMagnetic WorkBench tutorial: create a conductive plane, part 1
• FreeCAD ElectroMagnetic WorkBench tutorial: create a conductive plane, part 2
• FreeCAD ElectroMagnetic WorkBench tutorial: create a conductive plane, part 3
• FreeCAD ElectroMagnetic WorkBench tutorial: using the path object, part 1
• FreeCAD ElectroMagnetic WorkBench tutorial: using the path object, part 2