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COMPARITIVE STUDY ON VOLTAGE SAG COMPENSATION UTILIZING PWM SWITCHED AUTOTRANSFORMER BY HVC

T. C. Devaraju

Open publisher page 1 citations

Abstract

Custom Power devices like Dynamic voltage restorer and STATCOM are normally employed as a solution for mitigation of power quality problems like voltage sag and swell. In this paper new voltage sag compensators based on an autotransformer and an IGBT switched by PWM technique and Hysteresis Voltage Control (HVC) method are compared. These two schemes are able to recognize the voltage sag condition quickly, and it can correct the correct the voltage by boosting the input voltage during voltage sag events. Different voltage sag events have been simulated by MATLAB/Simulink software. The results of simulations verify the ability of both methods to mitigate voltage sag events.

About this research paper

What this paper is about

Custom Power devices like Dynamic voltage restorer and STATCOM are normally employed as a solution for mitigation of power quality problems like voltage sag and swell. In this paper new voltage sag compensators based on an autotransformer and an IGBT switched by PWM technique and Hysteresis Voltage Control (HVC) method are compared. These two schemes are able to recognize the voltage sag condition quickly, and it can correct the correct the voltage by boosting the input voltage during voltage sag events. Different voltage sag events have been simulated by MATLAB/Simulink software. The results of simulations verify the ability of both methods to mitigate voltage sag events.

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Available abstract

Custom Power devices like Dynamic voltage restorer and STATCOM are normally employed as a solution for mitigation of power quality problems like voltage sag and swell. In this paper new voltage sag compensators based on an autotransformer and an IGBT switched by PWM technique and Hysteresis Voltage Control (HVC) method are compared. These two schemes are able to recognize the voltage sag condition quickly, and it can correct the correct the voltage by boosting the input voltage during voltage sag events. Different voltage sag events have been simulated by MATLAB/Simulink software. The results of simulations verify the ability of both methods to mitigate voltage sag events.

Key concepts: Voltage sag, Autotransformer, Voltage, Control theory (sociology), Engineering, Dropout voltage, Computer science, Power quality

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