Abstract
The application of BLDC motor is constrained to certain areas due to its drawback of torque ripple. This paper presents a novel scheme of reducing the commutation torque ripple of BLDC motors by injecting additional voltage in the non-commutating phase of the motor. In this work, two independent output voltages with different magnitudes are provided by single-input dual-output (SIDO) converter. One of the voltages (Vdc1) is connected to voltage source inverter which runs BLDC motor. Another voltage (Vdc2) is added to the main voltage (Vdc1) as an additional voltage at the time of commutation between any two phases. The SIDO converter is fed from PV system incorporated with MPPT scheme. The proposed configuration is developed and simulated in MATLAB/Simulink. Results prove the effective utilization of solar power for running the BLDC motor with reduced torque ripple and applicability of the proposed scheme in solar-powered air conditioner.
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