Is it possible to measure airgap flux density in rotor reference frame directly in Flux..?

Pranav_21555
Pranav_21555 Altair Community Member
edited February 2022 in Community Q&A
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Answers

  • Farid zidat_20516
    Farid zidat_20516
    Altair Employee
    edited January 2022

    Hi Pranav,

     

    Not sure I understood the request, but in Flux you can measure the flux density where you want thanks to point sensors, or by creating a path.

     

    Best regards 

  • Pranav_21555
    Pranav_21555 Altair Community Member
    edited February 2022
    Farid zidat_20516 said:

    Hi Pranav,

     

    Not sure I understood the request, but in Flux you can measure the flux density where you want thanks to point sensors, or by creating a path.

     

    Best regards 

    Hello Farid, 

     

    Thank you for your response. 

    Basically, I am able to plot the flux density on the rotor surface using the sensors but that wave form is in the stator reference frame.  

    • By stator reference frame I mean, it measures X and Y components of flux density at a particular point which has 90 Deg. phase shift. Probably, we could say that the wave forms are in alpha-Beta reference frame. 
    • The ''Mechanical Set to Visualize the Borders' is set to Stator for this case. 
    • Now, I wanted to plot these result in D-Q reference frame (i.e Rotor Reference frame)
    • So, When I change the 'Mechanical Set to visualize the boarders' to Rotor ; It does not give me the D & Q horizontal line wave form. 
    • Instead it still plots the same wave form as the rotor reference frame. 
    • The Question I wanted to ask is if there is any way I would be able to get the D-Q axis flux density waveform directly by making any changes in how I define the sensor..? 
    • I am have attached the sensor definition tab for your reference. image 
  • Farid zidat_20516
    Farid zidat_20516
    Altair Employee
    edited February 2022

    Hello Pranav;

     

    The plot of a given quantity is always given on the global coordinate system XYZ. You can modify if you want the coordinate thanks to VLSC() feature.

     

    If i inderstood well, you want to have a flux density (spatial distribution) and temporal distribution (vs time or rotor position)?

     

    If yes, the best way to do it, is to make a path in the air gap, and plot a 3D curve on the path, this allow you to have temporal (rotor position) and spatial shape of the flux density in the airgap.

     

    Or more if you want, you can use a 3D curve dedicated for rotating machine, it will make the same thing with few settings.

    I hope this will help you 

     

    Best regards 

  • Pranav_21555
    Pranav_21555 Altair Community Member
    edited February 2022
    Farid zidat_20516 said:

    Hello Pranav;

     

    The plot of a given quantity is always given on the global coordinate system XYZ. You can modify if you want the coordinate thanks to VLSC() feature.

     

    If i inderstood well, you want to have a flux density (spatial distribution) and temporal distribution (vs time or rotor position)?

     

    If yes, the best way to do it, is to make a path in the air gap, and plot a 3D curve on the path, this allow you to have temporal (rotor position) and spatial shape of the flux density in the airgap.

     

    Or more if you want, you can use a 3D curve dedicated for rotating machine, it will make the same thing with few settings.

    I hope this will help you 

     

    Best regards 

    Hello Farid, 

     

    Thank you again for your reply. I am actually trying to measure the flux density on a point located on the rotor surface. And I am looking for the changes in flux density on that particular point as the rotor completes one revolution. 

     

    I tried using the 3D curve dedicated for the rotating machine, and I am receiving error. I guess one of the reasons could be that the model is completely build in 2D..?  

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