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A question about FOC current control for PMSM

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haonan He
haonan He el 9 de Mzo. de 2021
Comentada: haonan He el 10 de Mzo. de 2021
I am trying to use Simscape to block a FOC current controller for PMSM motor. I set the reference Iq current to be 100 A and Id current to be -20 A. Although the Iq current can follow the expected value, the Id current keeps decreasing after suddenly reaches -20 A (see the figure). All the model parameters are the same as the MATLAB tutorial about PMSM ( The model in this vedio can have a good current control, but my model cannot (even though all the parameters are the same).
I appreciate it very much if you could help me out.

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Pat Gipper
Pat Gipper el 10 de Mzo. de 2021
The decoupling control is not quite correct for the PMSM motor you are using. You need to insert a multiplier by the number of pole-pairs on the speed. See the picture below.

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