Abstract
Voltage sag is one of the most significant power quality problems in the industry and has a significant impact on induction motor safety and stability. This paper analyzes the characteristics of voltage dips in power systems and induction motors with a special emphasis on balanced dips with the help of virtual grids (regenerative grid simulator), as per IEC 61000-4-11. Three phase induction motors with 3.3 kW, 16 A coupled to a DC generator with 3.7 kW, and 7.8 A rated are considered for the test analysis. This paper aids in the development of an induction motor to achieve improved precision by taking different voltage sags into account. The experimental results benefit the design modifications of induction motors at industrial and other commercial levels of consumers regarding major power quality issues and the behavior of the induction motors. A proposed modification employing ANSYS is provided to further examine the precise performance of induction motors during sag events.
Highlights
Academic Editor: Piotr GnacińskiVoltage sags are thought to be responsible for between 92–98 percent of all outages caused by power supply problems [1]
The induction motor is one of the most common industrial loads that are affected by power quality issues
Even if the voltage dips below 90% of the specified voltage for more than a few cycles, such equipment can trip
Summary
Voltage sags are thought to be responsible for between 92–98 percent of all outages caused by power supply problems [1]. The induction motor is one of the most common industrial loads that are affected by power quality issues. Using low-quality voltage to power induction motors results in additional losses, overheating, and a drop in efficiency. Overloads, or the starting of powerful motors cause voltage sag, which is a short-term drop in the root mean square (RMS) voltage. Even if the voltage dips below 90% of the specified voltage for more than a few cycles, such equipment can trip. Voltage sags are caused by faults that occur hundreds of kilometers away away the voltage as severe as an interruption, the overall damage [5,6,7,8].[5,6,7,8].
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