Mitigation of Torque Ripple in a Permanent Magnet Brushless DC Motor through Space Vector Pulse-Width Modulation Control | IJEEE-V8I4P2

This research explores the reduction of torque ripple in Permanent Magnet Brushless Direct Current Motors(PMBLDCM) by comparing the performance of Sinusoidal Pulse Width Modulation (SPWM) and conventional Pulse Width Modulation (PWM) techniques. The elimination of mechanical brushes and commutators in PMBLDCmotors not only boosts reliability and operational lifespan but also improves ef iciency and reduces maintenanceneeds. However, PMBLDC motors often experience excessive torque ripple, which negatively af ects bothperformance and ef iciency. This issue, marked by irregular torque output during operation, can lead to operational instability. The primary goal of this study is to implement an optimized method for torque ripple reductioninPMBLDC motors using the advanced Space Vector Pulse-Width Modulation (SVPWM) technique. Experimental results demonstrated that the torque ripple for SVPWM was significantly lower at 0.2%, compared to 1.7%forSPWM and 2.28% for PWM. Total Harmonic Distortion (THD) was also minimized with SVPWM, measuring6%, while SPWM and PWM recorded 8% and 10%, respectively, indicating superior harmonic suppression with SVPWM. Speed regulation performance further highlighted SVPWM’s advantage with only a 1.5% deviation, while SPWMand PWM showed deviations of 2.4% and 4.2%, respectively. Current ripple measurements revealed a notablereduction with SVPWM at 0.035%, SPWM at 0.08%, and PWM at 0.9%. Temperature analysis also favored SVPWM, maintaining an operational range of 50-56°C, while SPWM and PWM operated within 59-66°C and 70-86°C, respectively. Ef iciency calculations reinforced SVPWM’s ef ectiveness, achieving 88-92%, surpassing SPWM’s 85- 87% and PWM’s 69-79%. These findings confirm that SVPWM surpasses both SPWM and PWMin key performancemetrics, making it a superior choice for high-precision, energy-ef icient motor control applications. The studyconcludes that SVPWM of ers significant advantages in minimizing harmonic distortion, enhancing speed stability, reducing current ripple, and boosting overall ef iciency. These insights contribute to the development of morereliable and ef icient PMBLDC motor systems, aligning with industry demands for enhanced operational performance and sustainability in industrial motor applications. SVPWM’s advanced control capabilities canef ectively optimize BLDC motor operation while simultaneously improving overall system ef iciency.

This study has investigated the operational performance of Permanent Magnet Brushless DC (PMBLDC) motors under various control strategies, focusing on Space Vector Pulse Width Modulation (SVPWM), Sinusoidal Pulse-Width Modulation (SPWM), and conventional Pulse Width Modulation (PWM). A thorough analysis of key performance metrics, including torque ripple suppression, total harmonic distortion (THD), speed regulation, current ripple reduction, temperature management, and overall efficiency, has provided valuable insights into the effectiveness of these modulation techniques in enhancing motor performance

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