19-02-2011, 11:21 AM
PRESENTED BY:
N.SAHUL HAMEED
V.DINESH BABO
P.PURSOTHAMAN
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A Novel Power Management Control Strategy for Renewable Energy Power System
Introduction and Scope
Comparing single-stage grid-connected photovoltaic (PV) system with power quality improvement, in this project, a high-capacity single phase grid-connected PV system based on wide range conversion converter + inverter is proposed, which not only allows a wide range of input voltage, but also compensates unbalance current of the local load comparing in the case of three-phase three-wire PV system.
This project explains the control principle of each power stage of the system and the simplified cost effective control strategy of combination of PV grid-connected generation in detail.
then the Simulation and Experimental results of the proposed system represents the features of the proposed system.
Conversion from low-voltage dc to high-voltage ac for grid-tie applications were proposed to deal with specific issues such as high efficiency, low cost, and safety.
The aim of this article is to introduce and discuss the main features of these relatively new circuit topologies that deal with these practical design issues.
The aim of this article is to introduce and discuss the main features of these relatively new circuit topologies that deal with these practical design issues
Grid Tie converter system
For low-voltage dc energy sources, a power conditioning system (PCS) is needed to convert the energy sources to a higher-voltage dc before making it to ac for grid tie applications.
Solar photovoltaic (PV) and fuel cells are perhaps the most well-known and prospective energy sources with low-voltage dc output.
• A thermoelectric generator, a battery, and an ultra capacitor are also examples of such low-voltage dc energy sources. Recently, numerous circuit topologies for the power conversion from low-voltage dc to high-voltage ac for grid-tie applications were proposed to deal with specific issues such as high efficiency, low cost, and safety
INTRODUCTION TO PV SYSTEM
o The PV power system can be classified into two types: stand-alone PV system and grid-connected PV system.
o In remote or isolated regions where power grid can not extend to, stand-alone PV schemes have found a fairly wide application to meet the need for small but essential electric load.