why the transfer function is used in "pmsm speed control" in current loop?

Hi all,

In speed control of PMSM link:https://in.mathworks.com/help/physmod/sps/examples/permanent-magnet-synchronous-machine.html. In side PWM Inverter, in series to the current iabc (feedback current) there is a transfer function. why it is used? Is is a filter or to generate freqency? How to model our transfer function for our motor with low ratings. Is it necessary?

Answer 1

[Sabin]

The transfer function is used to model the sensor dynamics but also to break algebraic loops. I hope this helps.