Abstracto

Simulation of Five Phase BLDC Motor with Quasi Sinusoidal Commutation

Cicily Antony T, Beena M Varghese, Anish Gopinath

BLDC motor is a type of DC motor, which commutate electronically instead of using brushes.To impact rotation to this motor, commutation schemes are necessary. The paper presents a commutation scheme called quasi sinusoidal commutation which takes the advantage of conventional trapezoidal and sinusoidal commutation algorithm. The proposed logic reduces the torque ripple associated with ten step commutation and switching loss associated with sinusoidal commutation logic. The paper mainly concentrated on mathematical modelling offive phase BLDC motor with quasi sinusoidal commutation logic. The simulation of proposed commutation scheme was carried out in MATLAB/SIMULINK and the simulated results are presented to demonstrate the effectiveness of proposed commutation. Simulation model of the controllerand BLDC drive are also presented.