induction motor response not satisfying

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K on 13 Jan 2024
Edited: K on 14 Jan 2024
as mentionned the response of the induction motor, its speed, isn't fully as it should be. it's not wrong bet needs adjustement and I don't know where is the problem.
The motor has to maintain constant speed under varrying torque
below is the torque profil which has been already interpolated and looks quite smoth
the response i need which is the speed that needs to be constant and undergoes variation when torque arises and decreases, which the motor achieved but looks unsmooth as shown in the plot below
what I'm not satisfied with are the semi-intervall in the plot below
if you can see between 19 and 20 the speed is constant and drops at 20 to be again constant between 20 and 21, what I would like to achieve is what I've drawn in blue, a smooth slope that goes through the middle of each semi-Intervall.
My input doesn't have these weird semi-Intervall so I'm not quite sure where it comes from
my 2 questions are the following:
  • does it have anything to do with the solver? I used the same solver as in the example ''electric engine dyno''
  • is it an interpolation problem?
  • if there's no way to fix the simscape model, can it be reshaped any other way? like with a script or the signal toolbox?
thank you in advance
edit: the moving average block didn't worl for me

Answers (1)

Sulaymon Eshkabilov
Sulaymon Eshkabilov on 14 Jan 2024
At 1st, the smoothed torque profile (curve) is not smooth enough, and it does show consideable rattling that need to be removed or smoothed. All issues are orginating from the torque profile (curve). 2nd, to removing the rattling effect in the torque profile, you cna employ moving average filter block -
After taking these steps, most of the mentioned issues should be resolved.
Sulaymon Eshkabilov
Sulaymon Eshkabilov on 14 Jan 2024
Most welcome! Glad to be of some help. Great all the best.
K on 14 Jan 2024
sadly it didn't work in my case but thanks to you I got a new usefull block
I'll leave my question open in case anyone has other suggestions

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