A Review on Impact of Harmonics on Induction Motor Efficiency

In this paper, the output voltage harmonics of three-phase induction motor is reviewed. Several main factors which influence harmonics elimination also are discussed. Today, numerous industries use induction motors with variable frequency drives. These VFDs produce various harmonics, which heat up the motor, introduce EMI, and cause measuring equipment to malfunction. The mechanical force that results from these fault circumstances is strongly influenced by the motor's rate of rotation. Low motor speed causes the mechanical issue to exert less effort, which reduces frequency harmonics in the stator current. The stator current spectrum exhibits fault signals, however, even when the drive input frequency is very low, according to the data. Additionally, because the frequency components of interest are substantially lower than the drive frequencies, the harmonics of the drive frequency have little impact on defect identification. The majority of harmonic distortion occurs when loads draw non-sinusoidal current from the system. It predominates in areas where AC is converted to DC.