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I have designed a inset PMSM. I tried to plot the torque vs. rotor position plot but I am not getting a bell curve. Like at the torque must be maximum only when theta is 90 degrees.

I don't know where the mistake is. Is it due to the phase currents? I have given the phase currents as Ir=-2Im, Iy=Im, Ib=Im, where Im is 4A.

I think this is where the mistake is. Justify my statement and also theta is taken with respect to phase R as reference and the rotor position or rotor load angle is evaluated.

enter image description here

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    \$\begingroup\$ how about providing a schematic, description of what you are measuring/plotting, sample results and so on? There are some fine engineers on here but not so many psychics. \$\endgroup\$
    – danmcb
    Commented Jun 8, 2021 at 14:20
  • \$\begingroup\$ What do you get? \$\endgroup\$
    – user76844
    Commented Jun 8, 2021 at 14:28
  • \$\begingroup\$ You should get a sine/cosine curve, not a bell curve. But without plots, we can just guess. \$\endgroup\$
    – Marko Buršič
    Commented Jun 8, 2021 at 14:41
  • \$\begingroup\$ Sorry for the inconvenience but i could get only these values as i use FEMM to calculate the torque for each rotor position and it already took me a lot of time, but as you can see clearly, this doesn't depict a bell curve. \$\endgroup\$
    – Mohammed Siddique
    Commented Jun 8, 2021 at 14:44
  • \$\begingroup\$ @MarkoBuršič I am trying to plot a torque Vs rotor position curve, this must represent a bell curve. As you know, the increase in load angle increases the torque up to 90 degrees, then it starts decreases... \$\endgroup\$
    – Mohammed Siddique
    Commented Jun 8, 2021 at 14:46

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