VFD-Induced Harmonic Analysis and Performance Metrics of Multiphase Induction Motors

Induction motors are pivotal in a variety of industrial applications, making their control a subject of crucial importance. Variable Frequency Drives (VFDs) have gained prominence for their ability to efficiently modulate motor speed and torque according to load demands. Although VFDs offer considerable advantages in power efficiency and control precision, they also introduce harmonics into electrical systems due to the inherent nature of power electronic switching. This study specifically focuses on the impact of VFD-induced harmonics on the performance metrics of Squirrel Cage Induction Motors (SCIMs). Using MATLAB/SIMULINK for simulation, the paper conducts a comprehensive harmonic analysis to evaluate its effects on critical parameters such as speed and torque. The aim is to balance the benefits of VFDs with the challenges posed by harmonic distortions. The findings offer actionable information on optimizing VFD-based control strategies for multiphase induction motors. Therefore, the study contributes significantly to the ongoing discourse on harmonics management in complex motor drive systems.