Simulation and Construction of Voltage Sag Corrector

Electrical power quality has been the most important issue in recent years. Research has shown that nearly 92% of the electrical power quality problems were associated with voltage sags. Voltage sag is a short duration reduction in rms voltage caused by short circuit faults, switching operations,...

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Main Author:	Rohi, Daniel
Format:	Thesis
Language:	English English
Published:	2002
Subjects:	Voltage regulators Power Constructibility (Set theory)
Online Access:	http://psasir.upm.edu.my/id/eprint/10623/1/FK_2002_17.pdf
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id	my-upm-ir.10623
record_format	uketd_dc
spelling	my-upm-ir.106232024-04-30T01:03:44Z Simulation and Construction of Voltage Sag Corrector 2002-02 Rohi, Daniel Electrical power quality has been the most important issue in recent years. Research has shown that nearly 92% of the electrical power quality problems were associated with voltage sags. Voltage sag is a short duration reduction in rms voltage caused by short circuit faults, switching operations, impact over loading, or starting of large motors. To mitigate voltage sag problems are to have a cautious maintenance and control to the supply, transmissions and the distribution to prevent damages. User can find the underlying cause of voltage sag by installing devices that can minimize voltage sag. Electro-magnetic contactor is one of the devices that is sensitive to voltage sag. Data shows that contactor, which is widely used for controlling motor, cannot work properly when there are 50% rms voltage reduction for a period longer than one cycle. This project will describe a type of voltage sag corrector (VSC) device that is especially use to minimize voltage sag impact at the contactor. The VSC device is used for contactor that uses 120V AC. To give enough magnetic power to the contactor, AC voltage that is stable is used until there is a match w ith DC voltage. When there is 120 V AC input, it will be converted by the rectifier to DC voltage with a value of 170 V. Furthermore, 170 V DC w i l l be reduce to 12 V DC by the chopper circuit. The chopper circuit is driven by the output signal or duty cycle of the control circuit. The duty cycle depends on the occurring voltage sag magnitude. The duty cycle will increase proportional with voltage sag. The software Orcad PSpice version 9.1 is effective to make simulations of the VSC circuit. The experimental result shows that the VSC is effective to mitigate voltage sag for contactor ride-through. Voltage regulators Power Constructibility (Set theory) 2002-02 Thesis http://psasir.upm.edu.my/id/eprint/10623/ http://psasir.upm.edu.my/id/eprint/10623/1/FK_2002_17.pdf text en public masters Universiti Putra Malaysia Voltage regulators Power Constructibility (Set theory) Faculty of Engineering Khan, Nasrullah English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
advisor	Khan, Nasrullah
topic	Voltage regulators Power Constructibility (Set theory)
spellingShingle	Voltage regulators Power Constructibility (Set theory) Rohi, Daniel Simulation and Construction of Voltage Sag Corrector
description	Electrical power quality has been the most important issue in recent years. Research has shown that nearly 92% of the electrical power quality problems were associated with voltage sags. Voltage sag is a short duration reduction in rms voltage caused by short circuit faults, switching operations, impact over loading, or starting of large motors. To mitigate voltage sag problems are to have a cautious maintenance and control to the supply, transmissions and the distribution to prevent damages. User can find the underlying cause of voltage sag by installing devices that can minimize voltage sag. Electro-magnetic contactor is one of the devices that is sensitive to voltage sag. Data shows that contactor, which is widely used for controlling motor, cannot work properly when there are 50% rms voltage reduction for a period longer than one cycle. This project will describe a type of voltage sag corrector (VSC) device that is especially use to minimize voltage sag impact at the contactor. The VSC device is used for contactor that uses 120V AC. To give enough magnetic power to the contactor, AC voltage that is stable is used until there is a match w ith DC voltage. When there is 120 V AC input, it will be converted by the rectifier to DC voltage with a value of 170 V. Furthermore, 170 V DC w i l l be reduce to 12 V DC by the chopper circuit. The chopper circuit is driven by the output signal or duty cycle of the control circuit. The duty cycle depends on the occurring voltage sag magnitude. The duty cycle will increase proportional with voltage sag. The software Orcad PSpice version 9.1 is effective to make simulations of the VSC circuit. The experimental result shows that the VSC is effective to mitigate voltage sag for contactor ride-through.
format	Thesis
qualification_level	Master's degree
author	Rohi, Daniel
author_facet	Rohi, Daniel
author_sort	Rohi, Daniel
title	Simulation and Construction of Voltage Sag Corrector
title_short	Simulation and Construction of Voltage Sag Corrector
title_full	Simulation and Construction of Voltage Sag Corrector
title_fullStr	Simulation and Construction of Voltage Sag Corrector
title_full_unstemmed	Simulation and Construction of Voltage Sag Corrector
title_sort	simulation and construction of voltage sag corrector
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Engineering
publishDate	2002
url	http://psasir.upm.edu.my/id/eprint/10623/1/FK_2002_17.pdf
_version_	1804888579377201152

Simulation and Construction of Voltage Sag Corrector

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