Microcontrooler based design an implementation of parallel inverters

Modern world is moving towards the use of renewable energy resources since non-renewable resources are being depleted day by day. Following the trend, modern electrical systems also uses renewable(Solar& Wind) energy. This helps to lessen the greenhouse gas emissions. The renewabl

Project Title

Microcontrooler based design an implementation of parallel inverters

Project Area of Specialization

Robotics

Project Summary

Modern world is moving towards the use of renewable energy resources since non-renewable resources are being depleted day by day. Following the trend, modern electrical systems also uses renewable(Solar& Wind) energy. This helps to lessen the greenhouse gas emissions. The renewable energy is being joined to electrical grids by usage of power converters with hundreds of megawatt power. But this system is not reliable and single point faults may occur which can lead to system failure on a larger scale. The point here is that, what measures should be taken to avoid these faults? How system can be made reliable and robust?

This project is the answer to these questions.

Project Objectives

Mostly, several inverters are connected in parallel and power is shared among these inverters rather using a single inverter with hundreds of megawatt power.
This project utilizes the parallel inverters that take out DC power from Photovoltaic array into AC power and merge it with the grid.

Project Implementation Method

• The following circuit flow diagram shows the implementation method when 3Ø input is considered. 

• We are to use the Photovoltaic Panels that extract solar energy as input, so the implementation tecnique we use is as follow:

? DC-DC Converter is a push-pull converter

? MPPT is Maximum Power Point Tracking Control for solar energy 

Benefits of the Project

For grid-tied inverters, the crucial control objectives are to keep the voltage and the frequency synchronized with the grid, control active and reactive flow to the grid and keep harmonic fluctuations lesser than a standard limit. For parallel operation of inverters, it is important to lessen the circulating currents among inverters, maintenance cost and it should have easy debugging of inverter section.

This kind of parallelism of inverters provides reliability, robustness, low initial and maintenance coast. For inverters connected across a common DC link capacitor, the circulating currents are no longer a problem as each inverter unit produces the same pulse width modulated (PWM) output.

Technical Details of Final Deliverable

1. Solar Panels
2. Maximum Power Point Tracking Control
3. 2 x High Frequency Transformers
4. 2 x Inverters
5. Sensor based control of Inverters
6. Interfacing and synchronization

Final Deliverable of the Project

Hardware System

Type of Industry

Energy

Technologies

Robotics

Sustainable Development Goals

Industry, Innovation and Infrastructure

Required Resources

If you need this project, please contact me on contact@adikhanofficial.com