Hardware Realization of bidirectional DC-DC Converter
Bidirectional dc to dc converter is used as a key device for interfacing the storage devices between source and load in renewable energy system for continuous flow of power because the output of the renewable energy system fluctuates due to change in weather conditions. In electric vehicles also, bi
2025-06-28 16:32:50 - Adil Khan
Hardware Realization of bidirectional DC-DC Converter
Project Area of Specialization Electrical/Electronic EngineeringProject SummaryBidirectional dc to dc converter is used as a key device for interfacing the storage devices between source and load in renewable energy system for continuous flow of power because the output of the renewable energy system fluctuates due to change in weather conditions. In electric vehicles also, bidirectional converter is used between energy source and motor for power supply from battery to motor. Thus, bidirectional dc to dc converters are getting more and more attention in academic research and in industrial applications. Bidirectional dc to dc converters work in both buck and boost mode and can manage the flow of power in both the direction between two dc sources and load by using specific switching scheme and phase shifted control strategy and hence generated excess energy can be stored in batter-ies/super capacitors.
Project ObjectivesAt present, there is a lack of broad knowledge and experience with systems using multiple different batteries. Therefore, this report is to increase knowledge about converters and energy transfer strategies, specifically by studying, designing and simulating a system using two batteries.
The objective of the project is to design a bidirectional DC/DC converter to implement the function of controlling the energy transfer between the batteries. In order to succeed with the energy transfer, an understanding of how the system shall be interconnected with the PV panels is required. For this interconnection, a design using a shared PCB for the bidirectional DC/DC converter and to increase the energy density. Software shall also be implemented on an Arduino Due which controls the power transfer and supervises the batteries. This design will provide broader insight on the techniques with a dual battery setup and hopefully inspire others.
Project Implementation MethodIn this project, modeling of bi-directional DC-DC converter is developed for energy generation and simulated in MATLAB/SIMULINK. The performance of the bi-directional converter using triangle PWM technique has been analyzed from the prospective of input/output characteristics and harmonic content of output voltage and current. The multi-stage current charging method is used to charge the batteries. The system can use the battery for energy storage to keep the load voltage and load current stable. Control strategy and system design can be easily im-plemented and able to improve the efficiency.
Benefits of the ProjectBidirectional converters can realize bidirectional power transmission, which functionally equivalent to two unidirectional converters, hence, system size can be significantly reduced and power density can be increased. Based on the requirement of large power difference between bidirectional transmissions in some renewable energy applications, a family of bidirectional DC/DC converter with asymmetrical power transmission capability is proposed. Compared with the conventional one, the proposed bidirectional converter has the following advantages: lower cost, simple circuit topology and control. The potential applications of the proposed bidirectional converter are introduced and the topology derivation process is presented.
Due to small size, high power density and low cost, bidirectional DC/DC converters (BDCs) have been used in applications where bidirectional power transmission is required, such as uninterruptible power supplies, aviation power systems, and electric automobiles. In the meantime, with the rapid development of renewable energy distributed generation system and microgrid technology, BDCs will be widely applied for the integration of different energy sources or storage devices
Technical Details of Final DeliverableThe final deliverable will be in the form of software & hardware. In hardware the solar & wind turbine will be used as a source generator.On the other hand the circuit will measure the voltages Where Wi-Fi Module will send all the data to software where we can moniter the voltages.
Final Deliverable of the Project HW/SW integrated systemCore Industry Energy Other Industries Energy Core Technology NeuroTechOther Technologies NeuroTechSustainable Development Goals Affordable and Clean Energy, Decent Work and Economic Growth, Industry, Innovation and InfrastructureRequired Resources| Item Name | Type | No. of Units | Per Unit Cost (in Rs) | Total (in Rs) |
|---|---|---|---|---|
| Total in (Rs) | 64800 | |||
| Heat sink module | Equipment | 4 | 300 | 1200 |
| Mosfets | Equipment | 12 | 150 | 1800 |
| PCB sheets | Equipment | 2 | 600 | 1200 |
| Solar Panel | Equipment | 1 | 7000 | 7000 |
| battery | Equipment | 1 | 6000 | 6000 |
| high frequency transformer | Equipment | 1 | 2000 | 2000 |
| Gate Drain tranformer | Equipment | 2 | 200 | 400 |
| Capacitors | Equipment | 2 | 200 | 400 |
| Resistors | Equipment | 4 | 100 | 400 |
| IC,s | Equipment | 2 | 500 | 1000 |
| sensors | Equipment | 8 | 600 | 4800 |
| Terminal blocks | Equipment | 2 | 200 | 400 |
| Arduino | Equipment | 2 | 800 | 1600 |
| Buck Converter | Equipment | 1 | 2500 | 2500 |
| Boost Converter | Equipment | 1 | 3000 | 3000 |
| Relay Module | Equipment | 1 | 600 | 600 |
| wifi module | Equipment | 1 | 1000 | 1000 |
| wind blower | Equipment | 1 | 3000 | 3000 |
| wind blade | Equipment | 3 | 1000 | 3000 |
| PCB printing and etching | Equipment | 1 | 1500 | 1500 |
| invertor | Equipment | 1 | 4000 | 4000 |
| design | Equipment | 1 | 8000 | 8000 |
| Miscellaneous | Miscellaneous | 1 | 10000 | 10000 |