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Thermal modelling in Flux - Questions from a beginner

User: "Melih Ayyildiz_22506"
Altair Community Member
Updated by Melih Ayyildiz_22506

Hello,

I am struggling to analyze the thermal behaviour of an electric motor. My goal is to design a motor first in FluxMotor and then calculate the electromagnetic and thermal behaviour for a specific working point in Flux.

I noticed that FluxMotor has the function to export a Flux 2D model. I would like to calculate the thermal behaviour over time of each component inside the EM for my specific operating point. There are two options inside FluxMotor to export an Flux 2D model : a static model and a transient model. I have multiple questions regarding this export options:

  1. Inside the static thermal model, I have to enter the the inputs "Speed, stator joule and iron losses, magnet losses and rotor iron losses". Except for the speed I do not know the exact values for each thermal loss. Where do I obtain these values? Do I have to calculate the losses inside a prior electromagnetic calculation inside Flux?
  2. Will the exported model be able to calculate the temperature over time? Or do I have to export an a transient model ? 
  3. Regarding the transient model: FluxMotor asks me to put in the temperature of the winding, endwinding, magnet etc. before exporting the Flux2D model. Why are these temperatures needed to export the model? Does the exported model use these values as a constant temperature for calculating the (temperature dependent) losses? This would mean that this exported model is not suitable to calculate the thermal behaviour of the electric machine, right?

I am a beginner to the Flux Software. What would be a good starting point for learning the use of thermal calculations inside Flux?

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