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Mathematical Problems in Engineering
Volume 2014, Article ID 845873, 18 pages
Research Article

Analysis and Mathematical Model for Restitution of Voltage Using Dynamic Voltage Restorer

1Department of Electrical and Electronics Engineering, Anna University, Chennai 600 025, India
2Department of Information Technology, SRM University, Chennai 603 203, India

Received 10 July 2013; Revised 17 January 2014; Accepted 6 February 2014; Published 24 April 2014

Academic Editor: Claudio R. Fuerte-Esquivel

Copyright © 2014 C. Gopinath et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Voltage sag and swell have a major concern in the distribution systems. In order to mitigate the voltage sag and swell, a custom power device called dynamic voltage restorer (DVR) is used. The proposed system is a polymer electrolyte membrane (PEM) fuel cell based DVR. The energy from the fuel cell is stored in the super capacitor to restitute the voltage. In this proposed DVR, Z-source inverter is used instead of traditional inverter because of buck-boost and shoot through capability. The simulation is performed using three controller topologies: PI controller, synchronous reference frame controller and fuzzy controller and the results are verified using Matlab-Simulink environment.