Poly phase BLDC motor drive with ten step commutation

The paper presents the ten step commutation of five phase BLDC motor implemented in the platform of AT89C51 microcontroller. The ten step commutation logic to drive the motor was developed with the information achieved from the five Hall sensors embedded in the motor. These informations are used to predict the position of rotor at any instant of time and is used in the present work to determine the phase which is to be made conducting. The PWM controller for present work was implemented using analogue setup. The performance of the system was evaluated and verified that the motor rotates in clockwise and counterclockwise direction with same speed. The simulation and validation of control of BLDC motor using ten step commutation has been presented using MATLAB/SIMULINK. The hardware implementation of five phase BLDC motor drive was carried out, and the experimental results are presented.