Implementation of SPWM Technique in D-STATCOM for Voltage Sag and Swell

Authors: David Vorganti and Cholleti Sriram

Abstract

This paper presents the implementation of Sinusoidal Pulse width modulation (SPWM) technique to control Voltage Source Controller (VSC) in Distribution STATCOM (D­STATCOM) to mitigate power quality problems, voltage sag and swell. Power quality determines the fitness of electrical power to consumer devices. Synchronization of the voltage frequency and phase allows electrical systems to function in their intended manner without significant loss of performance or life. The major problems in distribution system are the voltage sag and swell. To solve this problem, modern power electronic devices are used. One of those devices is the Distribution STATCOM (D-STATCOM), which is the most efficient and effective FACTS based modern power device used in power distribution networks. D-STATCOM injects a current in to the system to correct the voltage sag and swell. The control of the Voltage Source Converter (VSC) is done with the help of SPWM. The proposed and implementation of SPWM in VSC of D-STATCOM is designed and simulated using MATLAB/SIMULINK software.

Index Terms

Dynamic Analysis, DSP-Based Control, Hybrid Stepping Motor

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Implementation of SPWM Technique in D-STATCOM for Voltage Sag and Swell