Sinusoidal Current Drive for Brushless DC Motor
Mike Gomez, Mark Pallones
Sinusoidal current drive is known to deliver improvements in performance in terms of motor vibration and acoustic noise. Motor controls may therefore use a sinusoidal current drive in preference to the traditional rectangular/square current drive given that overall system implementation cost should be analogous with the complexity of motor design. In this application note, 8-bit PIC® microcontroller will be used to implement sinususoidal current drive on a low cost single-phase or 2-phase (Split Phase) BLDC Motor with sensored or sensorless mode.