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Flux PEEC
Flux PEEC is a 3D modeling module dedicated to electrical interconnections of power electronics devices. It also provides RLC extraction and generation of SPICE-like equivalent circuits.
Principles
Modeling with Flux PEEC
Description principle with Flux PEEC
General approach: tube conductor and assimilation conductor

Welcome
User guide
The user guide gives information about principles and how to use Altair® Flux® 2025.
What's New
See the release notes of the last and previous versions, with the necessary information on new features.
"How to" Documents
See a list of documents to understand how to use certain features.
Altair Flux Videos
Several youtube videos about how to use Altair Flux and several tip and tricks
Flux Supervisor
The Flux supervisor allows to run projects, examples, pythons scripts; to configure user preferences; to access tools...
Flux
Flux is a finite element software for low-frequency electromagnetic and thermal simulations. Both, 2D and 3D solutions are available...
Flux Skew
Flux Skew is a module dedicated to the analysis of rotating electric machines with skewing, allowing a straightforward geometric and physical description in 2D and the consideration of continuous or step skewing effects.
Flux PEEC
Flux PEEC is a 3D modeling module dedicated to electrical interconnections of power electronics devices. It also provides RLC extraction and generation of SPICE-like equivalent circuits.
Material Identification
The Material Identification tool is based on the Altair Compose environment and allows determining from measurements the parameters and coefficients required to create a material in Flux.
Altair Material Datacenter (AMDC)
AMDC is a comprehensive material database maintained by Altair and partner suppliers of engineering materials. Ready-to-use, Flux-compatible models may be obtained directly from this database for a growing number of materials.
Material Manager
Flux has a material manager with its own material base.The user can create his own material base and import them into the Flux models to be studied.
Flux e-Machine Toolbox
FeMt is a application in Flux dedicated for Electric Machine which permits to compute and postprocess results like efficiency maps.
Flux Examples
See the lists of examples 2D, 3D, SKEW and PEEC with all available documents and all project and python files.
Flux in SimLab Examples
See the lists of 2D and 3D SimLab examples using the Flux and Mipse solvers, with all available documents, *.slb databases and all script files.
Mementos
See a list of Memento documents to understand certain Flux features.
Macros
Flux proposes several macros enabling doing actions that are not yet implemented in Flux.
PyFlux Documentation (Beta version)
This documentation deals with the Jython script used in Flux and allows to understand the various structures of entities and functions, and use it in user scripts for example.
Flux installation guide
This document provides instructions for Flux installation on supported platforms.
Flux Starting Guide
Several short videos to start with Flux.

General approach: tube conductor and assimilation conductor

Introduction

This paragraph deals with:

the general modeling process
the two modes of description of the conductors in Flux PEEC
(called tube conductor and assimilation conductor )

General process

The general process of modeling in Flux PEEC is presented in the table below. The elements necessary for the description of a conductor and the concepts of tube conductor and assimilation conductor are presented in the following blocks.


Stage	Description
1	Choice of an application (scenario definition)
2	Conductors description: tube conductor / assimilation conductor
3	Addition (possibly) of a ground plane
4	Electric description *
5	Meshing
6	Solving process (according to the scenario)
7	Results post-processing

* Electric description depends on the choice of the application (Supplied conductors / Conductors impedance)

Description of a conductor …

The description of a conductor includes:

its geometrical description (topology of the conductor)
its physical description:
- information related to the material (resistivity and possibly relative permeability)
- information related to the meshing (type of mesh, density)
the description of its terminals (for electric connections between conductors)

Two modes …

Two types of conductor description are proposed in Flux PEEC, called tube conductor and assimilation conductor. These two modes of description are presented in the two tables below.


The tube conductor mode enables the description of following conductors		Principal characteristics
unidirectional		simplified geometrical description (geometric tube) automatic physical description (material of the application / mesh according to the reference frequency / input-output terminals)
- of rectangular cross-section
- of variously-shaped full cross-section
- of variously-shaped hollow cross-section with constant layer thickness


The assimilation conductor mode enables the description of following conductors		Principal characteristics
unidirectional		detailed geometrical description (points, lines, faces, volumes) detailed physical description (material, mesh, terminals)
- of variously-shaped cross-section
- of full cross-section (rectangular included)
- of cross-section characterized by an unspecified number and various shape of holes
bidirectional

These two modes of description are detailed in the following paragraphs.