Abstract—The Dynamic Voltage Restorer (DVR) is series-connected power electronics based device. It provides technically advanced and economic solution to compensate voltage sag in both transmission and distribution systems. DVR output is determined according to the degree of disturbance in supply voltages. Sag compensation is achieved by injecting the required power into the line through DVR injection transformer. A variety of energy storage devices are used in DVR power circuit for supplying the input to inverter. In this paper, various energy storage devices which are generally used with the DVR power circuit are discussed in detail. Based on the comparative study suitable energy storage devices are suggested for a DVR system.
Index Terms—DVR, Energy Storage Device, Voltage Disturbance.
Dr. H. P. Tiwari is Associate Professor in Department of Electrical Engineering with the Malaviya National Institute of Technology Jaipur, Rajasthan, INDIA (e-mail: email@example.com).
Sunil Kumar Gupta is research scholar in Department of Electrical Engineering with the Malaviya National Institute of Technology Jaipur, Rajasthan, INDIA (e-mail: firstname.lastname@example.org).
Cite: H.P. Tiwari and Sunil Kumar Gupta, "DC Energy Storage Schemes for DVR Voltage Sag Mitigation System," International Journal of Computer Theory and Engineering vol. 2, no. 3, pp. 313-318, 2010.