Bi directional dc to dc converter for solar application

Our project is Bi-directional DC-DC converter for renewable energy system.In renewable energy system its output fluctuates due to continuous change in weather condition. For the continuous power flow, the output of the system must be stable. For this there should be a system that can stores power fr

Project Title

Bi directional dc to dc converter for solar application

Project Area of Specialization

Electrical/Electronic Engineering

Project Summary

Our project is Bi-directional DC-DC converter for renewable energy system.In renewable energy system its output fluctuates due to continuous change in weather condition. For the continuous power flow, the output of the system must be stable. For this there should be a system that can stores power from renewable resources and at the same time it should be capable of providing power to the load to overcome this problem.

A common solution to this problem is to use an energy storage device beside the renewable energy resources to compensate for these fluctuations and maintain a smooth and continuous power flow for the load. As the most common and economical energy storage devices in medium power range are batteries and super- capacitor, a dc-dc converter can always be used to allow energy exchange between the storage devices and rest of the system.Such a converter must have bidirectional power flow capability with flexible control in all operating modes.

Project Objectives

Our final year project is a product-based project in which we will design a bidirectional dual active bridge (DAB) DC-DC converter for renewable energy.
Bidirectional DC-DC Converters (BDC) are commonly used in various applications due to the rapid growth of systems
With the ability of bidirectional energy transfer among two DC buses. Both buses will operate on different voltages like  12V and 48 volts. It also has batteries and loads of respective volts on  both sides .

since efficiency plays an important role in power system so we will try to achieve maximum efficiency that is upto 96%. Also mian objective is to makes this converter possible to combine energy sources and energy stores with very different voltages in an overall system with stabilized voltage.

Project Implementation Method

LM 5170 IC will detect the input voltage from the PV panel at its 48 v pin. It will require 6 v minimum to be in stand by mode. Power can be delivered to both sides i.e, towards LV side and HV side. The combination of the Electronic Load  and bench Power Supply  emulates a battery capable of both sourcing and sinking current. A relatively Higher Voltage Power Supply  and ELoad (HV-E-Load) should be used for the 48VDC-port, and a Lower Voltage Power Supply and
E-Load (LV-E-Load) for the 12VDC-port.

In Buck Mode operation, the HV-E-load can be turned off, and in Boost Mode operation, the LVE-load can be turned off.

voltages are produced by PV panel. It will be connected to the IC. Through the controlling pins of IC we can decide the direction of flow of power. To each end batteries and loads are connected respective of voltage.

Benefits of the Project

• The biggest advantage of any electric component is its efficiency. This converter topology will provide us with upto 96% efficiency.
• This DC/DC converter can be used to connect an electric output from energy stores, such as batteries or super-capacitors, with volatile voltages used to a system with a stabilized voltage.
• Two different types of load can be used with this converter.
• It can protect batteries and loads against fluctuated voltages. 
• This converter makes it possible to combine energy sources and energy stores with very different voltages in an overall system with stabilized voltage.
•  As energy stores, capacitors allow a very high percentage of the stored energy to be used.

Technical Details of Final Deliverable

Our final deliverable will be used with pv system 
Since its output can be 48 volt when its input is 12 volt operating in boost condition it will be used for driving loads if the output of the solar panel is 12 v it will boost it to 48 v which will be used to drive different loads and a battery can also be attached and charged for using it when the solar energy is not available 
If it is operated in buck mode it will step down the input 48 volt to 12 volt in this way it can be used to charge battery and drive loads through the battery it can be used with high power equipment since its rated power is Almost 700 watt.

Since the output voltage of any renewable device are variable and changes with time it can be dangerous to load but with our dc to dc convertor its output voltage are stablized

Final Deliverable of the Project

Hardware System

Core Industry

Education

Other Industries

Energy

Core Technology

Others

Other Technologies

Sustainable Development Goals

Affordable and Clean Energy

Required Resources

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