Design and Implementation of Self-Synchronized Inverter Connected with Grid for Renewable Energy Sources

The proposed single phase grid connected inverter is capable of dealing power with minimum number of active switches that simplifies the system configuration and its cost is lower significantly. It does not interference with nearby audio signal or communication networks due to low frequency switchin

Project Title

Design and Implementation of Self-Synchronized Inverter Connected with Grid for Renewable Energy Sources

Project Area of Specialization

Electrical/Electronic Engineering

Project Summary

The proposed single phase grid connected inverter is capable of dealing power with minimum number of active switches that simplifies the system configuration and its cost is lower significantly. It does not interference with nearby audio signal or communication networks due to low frequency switching. The synchronization, switching and controlling of this inverter enhance by using microcontroller based programming that improve its quality. The inverter is able to show better performance . The achievement indicates that the potentiality of proposed inverter can provide efficient and stable solution for grid connected PV system.

Project Objectives

It is the burning question to meet the consumers’ growing energy demand without creating any harmful impact on the environment. The environment pollution is occurring due to continuously burning of fossil fuels. Moreover, the fossil fuels with limited resources are running out and the security of electricity supplies is under threat. Sustainable energy sources are required to meet the electricity demand to overcome the threat of energy security. Renewable energy comes forward to solve the above problem. Among all renewable energy sources solar energy is the largest and available all over the world. PV is the direct process of converting solar energy into electricity. It is the most potential way, due to the availability, simplicity, lower maintenance and reliable operation. The main applications of PV systems are in either off grid or grid connected configurations. Off grid PV generation systems are attractive as indispensable electricity source for remote areas . However, challenge to utilize solar energy from off grid PV system is comparatively high capital cost, lower efficiency, larger capacity of storage battery and more operation and maintenance cost than grid connected configuration.

Project Implementation Method

The circuit diagram of the proposed grid connected single phase sine wave inverter using modified technology. It is composed of a half bridge dc-ac converter. One microcontroller (Atmel89C51) used for MOSFET operating signal for inverter and another used for control and synchronization of the inverter. The switching MOSFET (STP55NF06L) used for its excellent performance. The combination of MOSFET and microcontroller signal generates three levels a modified sine wave. Transformer and filter circuit make it pure sine wave shape. The comparator IC (LM324) compares different voltages and send signal to the microcontroller to operate switching relays via transistor (BC547) so that it can operate properly. Different voltage sources are designed to need for utilization and control scheme for both photovoltaic system and electrical grid.

Benefits of the Project

It is the burning question to meet the consumers’ growing energy demand without creating any harmful impact on the environment. The environment pollution is occurring due to continuously burning of fossil fuels. Moreover, the fossil fuels with limited resources are running out and the security of electricity supplies is under threat. Sustainable energy sources are required to meet the electricity demand to overcome the threat of energy security. Renewable energy comes forward to solve the above problem. Among all renewable energy sources solar energy is the largest and available all over the world. PV is the direct process of converting solar energy into electricity. It is the most potential way, due to the availability, simplicity, lower maintenance and reliable operation. The main applications of PV systems are in either off grid or grid connected configurations. Off grid PV generation systems are attractive as indispensable electricity source for remote areas . However, challenge to utilize solar energy from off grid PV system is comparatively high capital cost, lower efficiency, larger capacity of storage battery and more operation and maintenance cost than grid connected configuration.

Technical Details of Final Deliverable

The proposed single phase grid connected inverter is capable of dealing power with minimum number of active switches that simplifies the system configuration and its cost is lower significantly. It does not interference with nearby audio signal or communication networks due to low frequency switching. The synchronization, switching and controlling of this inverter enhance by using microcontroller based programming that improve its quality. The inverter is able to show better performance (efficiency 93.87%). The above achievement indicates that the potentiality of proposed inverter can provide efficient and stable solution for grid connected PV system.

Final Deliverable of the Project

Hardware System

Core Industry

Education

Other Industries

Core Technology

Others

Other Technologies

Sustainable Development Goals

Responsible Consumption and Production

Required Resources

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