Torque calculation of PMSM

Amina
Amina Altair Community Member
edited April 2022 in Community Q&A

Dear Support Team

I designed a PMSM in Flux and I performed some no-load analyzes like cogging torque and Back EMF calculation. Now I want to extract torque waveform by applying current source (instead of voltage source) and imposed speed. How can I do this? What circuit should be used? How is the optimal control angle calculated? Is any d-q transform required?

I would be grateful if you could help me with this, thank you.

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Best Answer

  • Mohammed Elamin_22169
    Mohammed Elamin_22169 New Altair Community Member
    edited April 2022 Answer ✓

    Hi Amina, 

    Please check the example " Brushless IPM motor " on the Flux supervisor and look at case 3 "Constant speed analysis". It shows how to set the circuit with current sources and perform the analysis to compute the torque and the power balance. you don't need any d-q transformation on this case as the current will provided directly against time. If you don't know the optimal control angle to use, I would suggest to run parametric analysis around the range you are expecting to find what is the best one to maximize the torque.   

    image

    Thanks, 

Answers

  • Mohammed Elamin_22169
    Mohammed Elamin_22169 New Altair Community Member
    edited April 2022 Answer ✓

    Hi Amina, 

    Please check the example " Brushless IPM motor " on the Flux supervisor and look at case 3 "Constant speed analysis". It shows how to set the circuit with current sources and perform the analysis to compute the torque and the power balance. you don't need any d-q transformation on this case as the current will provided directly against time. If you don't know the optimal control angle to use, I would suggest to run parametric analysis around the range you are expecting to find what is the best one to maximize the torque.   

    image

    Thanks, 

  • Amina
    Amina Altair Community Member
    edited April 2022
    Mohammed Elamin_22169 said:

    Hi Amina, 

    Please check the example " Brushless IPM motor " on the Flux supervisor and look at case 3 "Constant speed analysis". It shows how to set the circuit with current sources and perform the analysis to compute the torque and the power balance. you don't need any d-q transformation on this case as the current will provided directly against time. If you don't know the optimal control angle to use, I would suggest to run parametric analysis around the range you are expecting to find what is the best one to maximize the torque.   

    image

    Thanks, 

    Hi Mohammed Elamin,

    This is what I needed, thank you for your assistance and kindness.

    Regards,

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