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Analysis of Photovoltaic Power System with Battery Backup for Grid-Connected and Islanded Operations

This project explores a photovoltaic energy management system with battery backup for both grid-connected and islanded operations. The proposed system aims to inject power to the grid and control the DC link voltage without energy loss.

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Analysis of Photovoltaic Power System with Battery Backup for Grid-Connected and Islanded Operations

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  1. Analysis of photovoltaic power system with Battery Backup for Three phase grid connected and Islanded operations VIGNANA BHARATHI INSTITUTE OF TECHNOLOGY GUIDE PRESENTED BY Mr. RAMESH U.RAGHAVESHWAR Asst Professor 13P66D0709 (EPS) DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

  2. COLLECTIONS • Accusative • Synopsis • Intended system • Circuit diagram • Block diagram • Extension • Benefits • Applications

  3. ACCUSATIVE The main aim of this project is that to injecting the power to grid and control the DC link voltage without any energy loss. When the intended DG system is operated at the grid connected and islanding mode operations.

  4. SYNOPSIS • In this project the photovoltaic energy management system with battery backup is implemented. With the comparison of conventional system, the proposed converter can be operated with the both grid connection and for islanded operation. • In grid connected mode, the proposed converter is acts as a current source which is in phase with the grid voltage. The proposed converter is used for injecting the power to the grid and controlling the DC link voltage. The voltage getting from the renewable energy sources like from Photovoltaic system is as less energy can be increased by DC-DC Boost converter and also it manages the battery charging. • The proposed converter is operated as a voltage source converter in islanded mode condition. By using the maximum power point tracking algorithm DC-DC converter controls the DC link voltage as from the PV system.

  5. PROPOSED SYSTEM • The proposed system is composed of a PV generator and a battery bank interconnected by means of a dc/dc converter. • The inverter and the dc/dc converter share the same dc bus. The dc bus voltage is the same as the PV panel output voltage, which is imposed by an MPPT algorithm.

  6. CIRCUIT DIAGRAM

  7. BLOCK DIAGRAM PV STRING WITH FILTER CSI/VSI OPERATION LOCAL LOAD GRID MPPT GRID CONTROL PWM WITH CURRENT CONTROL DC-DC CONVERTER WITH BATTERY BACKUP ISLAND CONTROL

  8. EXTENSION • The arranged system can be remodified as hybrid renewable sources are connected for three phase MICROGRID connection by using three phase VSI/CSI. • Fuzzy controller can be implemented with the voltage and current controllers in the proposed system for improving the efficiency of the system.

  9. EXTENSION BLOCK DIAGRAM HYBRID PV STRING WITH FILTER 3 PHASE CSI/VSI OPERATION LOCAL LOAD 3 PHASE GRID MPPT GRID CONTROL PWM WITH CURRENT CONTROL AND WITH FUZZY DC-DC CONVERTER WITH BATTERY BACKUP ISLAND CONTROL

  10. BENEFITS • Controlling the DC link voltage • Minimize energy loss • Quality of energy supply • Greater reliability • Improved energy efficiency • Reduced environmental impact

  11. APPLICATIONS • Renewable energy resources • MICROGRID applications • SMARTGRID applications • Distributed generating units • Distributed energy storage systems

  12. REFERENCES • Micro-Grid Simulation during Grid-Connected and Islanded Modes of Operation by F. D. Kanellos, A. I. Tsouchnikas, N. D. Hatziargyriou, Senior Member, IEEE. • Islanded Operation of Distribution Networks.

  13. THANK YOU

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