International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 02 Issue: 02 | May-2015 www.irjet.net p-ISSN: 2395-0072 © 2015, IRJET.NET- All Rights Reserved Page 197 PV Based Dynamic Voltage Restorer (PV-DVR) With Significant energy Conservation Level N.Jeevagasundaram 1 , R.Kumar 2 1 PG Scholar, Power System Engineering, Maharaja Prithvi Engineering College, Avinashi-641654 2 Assistant Professor/EEE, Maharaja Prithvi Engineering College, Avinashi-641654 ---------------------------------------------------------------------***---------------------------------------------------------------------- Abstract -Dynamic Voltage Restorer (DVR) can provide the most cost effective solution to mitigate voltage sags, voltage swells and outages by establishing the proper voltage quality level that is required by the sensitive loads. PV-DVR system has become a favorable solution for a home or small industry. Particularly in Tamil Nadu, India, rural areas that have a substantial amount of insulation and have more frequent power interruptions on every day. This may occur in the developing countries, where the generated electrical power is less than their demand. Problems facing industries and residences regarding the power qualities are mainly due to voltage sag, short duration voltage swell and long duration power interruptions.The rating and design of series injection transformer of the DVR is presented. Many research works have been carried out on focusing the design and control of DVR. on-line type DVR has been presented to compensate the voltage sag in the system. The DVR without PV system, supported by the super capacitor as energy storage device for power quality improvement in electrical distribution system is presented. Key Words: Dynamic Voltage Restorer, PWM inverter, DC–DC converter, MPPT algorithm 1. INTRODUCTION Dynamic Voltage Restorer (DVR) with the proposed system consists of a PV array, low step-up DC–DC converter with P&O MPPT algorithm, battery, high step- up DC–DC converter, PWM inverter, series injection transformer and semiconductor switches S1, S2, S3, R1 and R2. Fig. 1. Block diagram of the proposed PV-DVR Table 1 Control signals for S1, S2 and S3. Supply voltage in % Control signals Mode of operation S1 S2 S3 100 1 0 1 Idle <100 1 0 0 DVR >100 1 0 0 DVR 0 0 1 0 UPS