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Eomys / pyleecan

Electrical engineering open-source software providing a user-friendly, unified, flexible simulation framework for the multiphysic design and optimization of electrical machines and drives
https://www.pyleecan.org
Apache License 2.0
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back emf constant and emf measurement at different speeds #685

Open crowdnidhi-design opened 8 months ago

crowdnidhi-design commented 8 months ago

Dear All,

I was wondering if we have a back emf constant measurement routine and the equation it uses.

Detest1 commented 7 months ago

Guys any update

BonneelP commented 7 months ago

Hello,

It seems that there is a OutMag.comp_emf method which is no longer called in a normal magnetic simulation (I guess to speed-up the computation). Here is the corresponding code:

image

If at the end of a simulation you call out.mag.comp_emf() then out.mag.emf should contain a Data object with "Stator Winding Electromotive Force" which can be done for each speed.

Best regards, Pierre

carno44 commented 2 months ago

Hi,

I want to plot the Torque vs Speed curve of the motor. I used the Tutorial -8 which used Toyota Prius 2004 machine and used only mag module. I added following two lines to compute and plot the emf.

output_ref.mag.comp_emf() #To compute the back emf (V) output_ref.mag.emf.plot_2D_Data("time")

But how to use this emf to calculate the net torque for the speed? Can it be done directly in multi-sim? IN Tutorial-8 MultiSim, right now the speed is held constant as varying it will not change the Torque value.

Best regards, Carno