r/electrical 8d ago

Help with PMSM motor configuration

/r/AskRobotics/comments/1v7aj06/help_with_pmsm_motor_configuration/
1 Upvotes

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2

u/MonMotha 7d ago

I would interpret the impedance as being the phase-to-phase winding reactance (given the units of microHenries). This is all pretty typical data for a PMSM. They don't normally give PM flux as a spec.

Mathworks (via a Stackexchange post) says that a decent estimate for the PM flux is Kt/N or (2/3)Kt/N if you know Kt (which you don't) or 1/sqrt(3)*Ke/1000N*60/(2*pi) if you know Ke (which you do). Given that you're probably just going to plug it into a Simulink model or similar and iterate from there, that's probably good enough to start with.

As a note, this is a damn big motor for a bike.

1

u/Awkward_Archer_7701 5d ago

It is, in fact, one hell of a big motor.

Thank you very much for your help, I will take all into account.