PERFORMANCE ANALYSIS OF TORQUE RIPPLE REDUCTION FOR BLDCM MOTOR BY AN IMPROVED ADAPTIVE MODEL PRESCIENT CONTROL METHOD

Applications that depend on variable speed drives have one main concern: accurate and efficient control of
Brushless Direct Current (BLDC) motors. This research explores the key factors that determine the
performance of BLDC motors, including torque, motor speed and flux or electromagnetic back-emf
fluctuation for optimal efficiency. Although optimal circumstances need continuous torque generation in
BLDC motors with trapezoidal back emf, real-world situations result in pulsing torque because of elements
such as changes in the motor's manufacturing structure and design, such as slot and teeth. Because of their
efficiency, dependability and precise control capabilities, BLDC motors have acquired appeal across a wide
range of applications. They are inherently prone to torque ripple and need sophisticated speed management
for maximum performance. Torque ripple in BLDC motors is caused by the interaction of the rotor's
permanent magnets with the stator's ferromagnetic teeth, which varies in strength throughout the magnetic
field and causes unpredictable torque variations. This torque ripple can have a negative impact on speedtorque characteristics, causing noise, vibrations and probable problems in sensorless drives. This study
provides a thorough examination of several approaches for decreasing torque ripple. The analysis
demonstrates that torque ripple in BLDC motors can be reduced by boosting the input voltage during
commutation, magnifying it fourfold compared to the back emf. In addition, the research examines alternative approaches for increasing input voltages throughout the commutation time. These discoveries
contribute to the progress of BLDC motor control approaches, allowing for smoother operation and greater
performance in a variety of applications.