Impact of Voltage Unbalance and Harmonics on Induction Motor in Operation Mode

In industries, induction motors (IM) are widely used because of their simple structure, low cost, and reliable operation. However, the working efficiency of the IM motor is greatly affected by the quality of power supplied from the grid. The current industrial power grid is increasingly unbalanced due to load unbalance and voltage becomes increasingly non-sinusoidal due to the use of more nonlinear loads and power electronic converters. This degrades the power quality leading to a decrease in the efficiency of the IM. This article simultaneously studies the influence of two factors voltage unbalance and harmonics on IM performance efficiencies such as power loss, efficiency, speed, torque, and ripple parameters in IM. In addition, the content of the article also shows the influence of different harmonic components on the working mode of the IM motor. The research results were simulated using Matlab-Simulink software, there are important data for users to have appropriate operating solutions to improve the performance and life of the IM motor in different operating modes.