In my Speed Control model using FOC to run a IPMSM motor, my output torque fluctuates by 1N-m. How do I solve this error?

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Dear Mathworks community,
I am working on a speed control model, using FOC, I plan to run the IPMSM motor at to meet a certain RPM and torque target. While my speed meets it's target, Torque target is also met but it keeps fluctuating up and down.
Target speed - 500 rpm and target torque - 60 Nm.
I am using the default 3-phase converter with 'Switching Device' set to MOSFET, PWM generator is set to 'Space Vector Modulation'. Output from 'ModWave Scope' does not show 'SVM' waveform. Where am I going wrong? Any help on this is very much appreciated!!
Thanks in advance!

回答(1 个)

Darshan Pandit
Darshan Pandit 2023-5-31
Hi aditya,
It appears that either Iq current loop controller, and perhaps Id current loop controller too, aren't tuned properly.
These are inside the torque controller subsystem.
  10 个评论
Aditya
Aditya 2023-6-1
Dear Mr. Pandit,
I have raised a service request, I do not know where excatly I am going wrong, On the service request, I have mentioned them to get in touch with you and set up a meeting depending on your availability.
In the meantime I will keep trying to solve this and try to understand the example that you had shared.
Thank you again for your inputs on this. Looking forward to talking to you soon!
Aditya
Aditya 2023-9-13
Dear Mr. Pandit,
I have a very quick question for you if that's alright.
I have a torque control model with a delta wound motor. I am using the 'MTPA Reference' block and 'IPMSM Control Reference' block for reference Id and Iq generation. The Id and Iq reference values generated by the blocks are not on the MTPA curve except the first operating point!. The Ld, Lq and flux that I use in the blocks are from electromagnetics software designed for Delta motor. These blocks work perfectly for me when I use them for other star connected motor in torque control.
Can you give me a bit of clarity as to why this does not work for Delta wound motor?
Thank you so much for all the support!!

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