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Abstract
The reduction of torque ripples is achieved by suppressing error between command and estimated torque. The conduction and commutation controller controls the torque instantaneously. The instantaneous control achieved with torque controller and torque estimator. The PI controller and back EMF feed forward controller controls the high torque in conduction region and by controlling out going phase the torque ripples are reduced in commutation region. To regulate BUCK BOOST Converter during commutation output of commutation ripple controller used. The sensorless control applied to detect position of the rotor through optimizing current and reducing torque pulsation. This is the advanced method of Field Oriented Control (FOC) of BLDC motor for non sinusoidal back EMF rotor speed achieved by Kalman filter. Finally the proposed torque control method is verified through simulation results. The simulation results using Matlab/Simulink are shows the torque ripples are eliminated effectively.