Minimization Torque Ripple of Brushless DC Motor Using SVPWM Algorithm with Two Phase Connection

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The paper analyses the SVPWM control schema of three-phase inverter employing two phase connection mode applied to Brushless DC motor (BLDC) drive with a view to reduce torque ripple is proposed. The current ripple, created due to the stator winding inductance, leads to generation of ripple in the torque and prevents the usage of BLDC motor in a precise servo drive system. SVPWM techniques enjoy an assortment of advantages such as high output quality and less THD. Also a current controlled technique for BLDC motor drives is used. The paper includes MATLAB/ SIMULINK results of conventional hysteresis current PWM and the proposed SVPWM approach. The comparison of simulation results reveals that the SVPWM technique is effective in reducing the torque ripple and THD of current. This control method improves the system performance thus making it suitable for immense applications employing electromechanical actuators.

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Current Controlled SVPWM; Brushless DC Motor; Hysteresis Current PWM; Minimization of Torque ripple

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