.BLDC.Utilities.ElectronicCommutator3phase

Information

According to the Hall sensor signals uC[m=3], the inactive (open) leg is choossen as well as the two legs that apply the DC voltage to two terminals of the machine, and therefore let a current flow through the corresponding phases of the machine to obtain a current space phasor perpendicular to the rotor's magnetic field. Of course due to the block commutation the angle between rotor position and current space phasor varies in the range [±90° - 30°, ±90° + 30°].

Setting the input pwm = true chooses the position of the current space phasor as +90°, whereas setting the input pwm = false results in a position of the current space phasor as -90° w.r.t. the rotor position. Applying a pwm signal (as for a brushed DC machine) to the input pwm offers the possibility to set the mean voltage applied to the phases choosen according to the Hall signals.