Hi,
I have measured the back emf waveform between two motor terminals (phases) and it looks like so:
So I have 9V peak-peak (4.5V Amplitude).
It is sine, but in D-Q reference frame it will be constant DC waveform (at a specific speed).
What will be the value of Back EMF in D-Q reference frame?
is it 9/2/sqrt(3) ?
Adam