How to include torque ripple on PMSM in Simscape model?

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Junghyo
Junghyo 2025-4-16
回答： Yoshi Minagawa 2025-4-22
https://mathworks.com/help/releases/R2024b/sps/ug/ipmsm-velocity-control.html
Hi, I need a simulation environment to reduce the ripple in a PMSM motor. When I run the example from the link above, it reaches a certain RPM and no noticeable ripple occurs in the first image . However, I was expecting a situation like the one shown in the second image below. Could it be that the Simscape model is simplified, and that's why I'm not seeing the ripple? I'm not an electrical engineering major, so I'm not sure what causes this difference. I'm curious how speed ripple can be reflected in the Simulink model (in that example).

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Yoshi Minagawa
Yoshi Minagawa 2025-4-22
Hi Junghyo,
Your assumption is correct. Linear lumped-parameter motor models in Simscape Electrical, such as the PMSM block, cannot reproduce detailed motor behaviors like torque ripple.
If you need a higher-fidelity model, you can use the FEM-Parameterized PMSM block.
Please refer to the following information for more details:
https://jp.mathworks.com/help/releases/R2024b/sps/ug/import-fem-jmag.html

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