Pv Cell Dvr with Industrial Drive Application

Abstract

In this paper various power quality problem caused by voltage sag or swell on power system are discussed. These problems will create failure of end user equipments which are sensitive to power quality supply. Here an attempt is taken in this paper to review from its establishment to an up to date bibliography on DVR for power quality improvement. Basically the main function of DVR is to eliminate voltage sag. Various control strategies and its improvement is analyzed. Dynamic voltage restorer (DVR) is one product that can provide improved voltage sag and swell compensation with energy storage integration. Ultra capacitors (UCAP) have low-energy density and high-power density ideal characteristics for compensation of voltage sags and voltage swells, which are both events that require high power for short spans of time. The novel contribution of this paper lies in the integration of rechargeable UCAP-based energy storage into the DVR topology. Ultra capacitors (UCAP) have low energy density and high-power density ideal characteristics for compensation of voltage sags and voltage swells, which are both events that require high power for short spans of time. With this integration, the UCAP-DVR system will have active power capability and will be able to independently compensate temporary voltage sags and swells without relying on the grid to compensate for faults on the grid like in the past. The proposed concept can be implemented with RES for Induction motor applications