We have a 3-phase BLDC motor with 3 Hall effect sensors. I believe the motor is star connected but the datasheet has little information and we are still trying to obtain this information from the manufacturer.
Researching online, I have understood that 3-phase BLDC motors can be controlled trapezoidally (60° or block control), sinusoidally or with field oriented control.
My understanding was you could use any of these control methods on any BLDC motor; which one you choose depends on your application (with sinusoidal control allowing for constant speed and torque output whereas field oriented control outputs the greatest torque as the stator magnetic field is perpendicular to the rotor permanent magnet's field).
Is this correct so far?
If yes, why might a motor manufacturer say "our motor is wound sinusoidally" as if to suggest the physical windings have been wound in such a way ONLY sinusoidal control can be used? Or might they have said this because they prefer you to use sinusoidal control but in reality, you could use any?