Model for Flux Skew
1. Overview
The aim of this export is to provide a python file which allows to get a full parametrized model ready to be used in Altair® Flux ® Skew environment.
In the current version models can be provided for static application or transient application in Flux Skew environment.
Three models can be exported to Flux Skew environment:
| Application | Model family | Package | Convention | Model / Test |
| STATIC | Without solving scenario | Current source | Motor & Generator | Basic model |
| TRANSIENT | Characterization | Open circuit | Motor & Generator | Back-EMF |
| Working point | Sine wave | Motor | I-Ψ-N |
Note: These models are considered for inner rotor machines as well as
for outer rotor machines.
2. Area to build and to export a model to Flux® Skew environment
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| Motor Factory – EXPORT AREA – Export model for Flux® Skew environment | |
| 1 | Selection of the EXPORT area of Motor Factory. |
| 2 | Access the area in which a model for Flux® Skew environment can be made |
| 3 | Zone to visualize the overview of the selected model to be exported |
| 4 | Click on the tab to select the application (STATIC or TRANSIENT) |
| 5 | 3 steps to build the model to be exported for Flux® Skew environment |
| 6 | Button to validate inputs and export the python file for building the model in Flux® Skew environment. |
| 7 | Buttons to export the python file for building the model in Flux® Skew environment, or launch directly Flux® Skew. |
3. Particularities in building and to exporting a model to Flux® Skew environment
A user who wants to build and export a model to Flux Skew has to follow the same steps and recommendations as with the function “FLUX 2D”.
The main particularity of function “FLUX SKEW” is in case a continuous stator or rotor skew is used, that the “Skew number of layers” is an input, that must be defined. Its default value is 3.
Even if the design of the machine is defined with “continuous skew”, the
“Skew number of layers” is necessary for Flux® to define the
finite elements model in the FLUX SKEW environment. A high number of layers gives more
accurate finite elements computations. However, it needs higher computation time. For
that purpose, the value 3 is a good compromise between accuracy and speed.
Note: In case of rotor step skew configuration, this parameter is not
required because it is intrinsically defined by the Design.
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| Motor Factory – EXPORT AREA – Export a model for Flux® Skew | |
| 1 | Tab to define the initial conditions for the simulation process in Flux® Skew environment |
| 2 | Settings like thermal and mechanical conditions can be defined |
| 3 | User inputs dealing with the considered test can be defined |
| 4 | The tab corresponding to advanced parameters can be expanded.Advanced parameters can also be defined, if needed. |
| 5 | Button to validate the previous choices |