Mitigation of Voltage SAG using Dynamic Voltage Restorer
A. Praveena1, M.Jayashree2
1A.Praveena, Power Electronics and Drives, Sri shakthi Institute of Engineering and Technology, Coimbatore, India.
2M. Jayashree, Power Electronics and Drives, Sri shakthi Institute of Engineering and Technology, Coimbatore, India.
Manuscript received on March 25, 2014. | Revised Manuscript received on April 14, 2014. | Manuscript published on April 30, 2014. | PP: 313-318 | Volume-3, Issue-4, April 2014. | Retrieval Number: D3007043414/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Power quality problem is an occurrence manifested as an nonstandard voltage ,current or frequency that results in failure of end use equipments .one of the major problem in power quality is voltage sag .To improve the power quality, custom power devices are used. The custom power device used here is DVR(Dynamic Voltage Restorer) is role to compensate load voltage during the different fault conditions like voltage sag ,single line to ground ,double line to ground faults .In this work ,PI controller and discrete PWM pulse generator are used for the control purpose.
Keywords: Component, PWM(pulse width modulation) technic, DVR(dynamic voltage restorer), PI(proportional integral) controller.