As the title says, does a sinusoidal input voltage make a BLDC motor nearly into a PMSM?
From Sensorless Trapezoidal Control of BLDC Motors, it follows that a BLDC motor has a trapezoidal back emf while a PMSM has sinusoidal back EMF. But if I use a sinusoidal commutation, will the back EMF of a BLDC motor still be trapezoidal?