Hello Joris,
the main challenge in modelling a closed loop controller in Simulation (regardless of tool) is that at the end of the day, you need to be able to design or tune at least part of the controller yourself. If you have no background on this, you should probably start with an example doing velocity control of a standard motor. From there you can look at the similarities between it and the PMLSM and beging to alter that example to your needs.
This block has links to examples: https://www.mathworks.com/help/physmod/sps/ref/velocitycontroller.html
There are also many youtube videos on motor control available, it would be beneficial to understand the theory before modifying the controller to meet your needs.
You will also need basic skills in Simulink and Simscape, which have free courses here: https://www.mathworks.com/learn/tutorials/simulink-onramp.html
Regards,
Joel
