How to get the PMSM Parameters from datasheet

Can any help me to understand how the PMSM is parameterized from the datasheet. I have taken an example of ABB BALDOR BSM132C-8200AA. THe torque constant in the datasheet is mentioned as 1.94N-m/A but in the Simulink environment when I am updating the PMSM with that this motor data (double click on the PMSM --> Select: Select a predefined parameterization --> Select manufacturer from dropdown:- ABB BALDOR and Select part from dropdown :- SM132C-8200AA-->Click on Update block with selected part), the value is 0.9169.

I want to know th calculation to get the maximum flux linkage, torque constant and the back emf constant.

Answer 1

[Sabin]

Datasheets are usually lax in defining what they mean. Torque constant can be torque per peak current, torque per RMS current, per phase or three phases. In Simscape Electrical the torque constant is defined assuming both per-phase and peak value. This is where the difference between datasheet and pre-parameterized PMSM comes from. The datasheet is defining the torque constant using rms line current which means we need to multiply it by sqrt(2)/3. We get 1.94*sqrt(2)/3=0.91. Moreover, the manufacturer's datasheet might provide an approximate value for the torque constant, which is rounded to a specific decimal point for simplicity. The final value that is used in the pre-parameterized PMSM can be slightly different to match the datasheet characteristics. I hope this helps.