EPGA based control of single phase SVC

Abstract

Power quality is one of the most important indicator in electrical engineering. Variations in the impedance should be noticed for any external disturbance or change in the parameters of the electrical systems. These variation affect the reactive power hence the power factor. The use of capacitors and inductors is the classical method to compensate the reactive power but still slow to operate and decreases the power quality. Flexible AC transmission systems (FACTS) are compensators that uses a control unit and power electronic switches to vary the impedance of the systems. The idea of this work is to change the switching and the control method of the static VAr compensator (SVC). Classical SVCs are based on thyristors for switching and using a simple control unit. Our method is to change the control unit by using an FPGA and a bidirectional switch to enhance the power quality and increase the speed of switching.