STUDYING THE EFFECTS OF LONG-DUARATION VOLTAGE VARIATIONS OF THE DISTRIBUTION NETWORK ON THE EFFICIENCY AND POWER FACTOR VALUE OF INDUCTION MOTORS

Abstract

During operation, induction motors are subject to the influence of voltage, supply frequency, and other factors, which affect their operational parameters,
especially power factor and efficiency. The power supply from the distribution network typically experiences long-duaration voltage variations depending on
the time of day, month, and season, and it needs to be maintained within permissible limits. These variations can impact the operational parameters of electric
motors. To examine this issue, the paper utilizes a mathematical modelling of the motor and performs simulations using Matlab/Simulink software to investigate
the effects of voltage variations on the motor. Based on the research findings, the paper proposes several solutions to mitigate the adverse effects caused by
voltage variations in order to maintain the reliable operation of the motor.