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How to calculation of PMSM Back EMF

0 votes
Dear All,


I have a question about back EMF of PMSM.

In the Plecs, how to calculate back EMF of PMSM?

I have back emf constant which measure by line to line peak voltage.

Best regards,
asked Jul 16, 2021 by oming0731 (27 points)

1 Answer

0 votes

The conversion approach is noted at the very bottom of the PMSM component documentation, where KE is the peak-phase voltage, φM is the flux induced by the magnet, and p is the number of pole pairs. 

KE = φM·p

Note that if your BEMF constant is line-to-line, opposed to the phase voltage, then you will have to add another scaling factor of sqrt(3) for sinusoidal BEMF.

answered Jul 19, 2021 by Bryan Lieblick (1,795 points)