DAB_Converter_Dissertation_Presentation.pptx

Mtech dissertation presentation

1. Title Slide Modeling & Simulation of Dual Active Bridge Converter for Renewable Energy Applications By: Pillai Genesh R Enrollment No: 202304102110003 Guided by: Ms. Hinal Surati Department of Electrical Engineering, C.G.P.I.T., UTU

2. Introduction EV charging requires high power converters ensuring efficient energy flow. Dual Active Bridge (DAB) converters offer bidirectional power flow and high efficiency. Features: High switching frequency, compact size, and robust power management.

3. Problem Statement Challenges in current EV charging solutions: - Limited efficiency and power handling capabilities. - Need for bidirectional power flow. DAB converters address these challenges but require optimization for practical use.

4. Objective Design, model, and simulate a DAB converter optimized for renewable energy and EV applications. Leverage SiC MOSFETs for higher efficiency and compact design. Achieve Zero Voltage Switching (ZVS) for minimal losses.

5. Literature Review Paper 1: Focused on phase-shift modulation for battery charging efficiency. Paper 2: Proposed reconfigurable DAB for wide ZVS range. Paper 3: Simulated DAB for energy storage with bidirectional power flow. Other papers highlighted soft-switching and microgrid applications.

6. Topology of Bi-Directional DC-DC Converters Isolated vs Non-Isolated Converters: - Isolated converters offer galvanic isolation and high voltage gain. Examples: Flyback, Forward, Push-Pull, and DAB.

7. DAB Converter Features Structure: Two H-bridges and a high-frequency transformer. Advantages: - High power density and wide voltage gain. - Soft-switching reduces switching losses. Applications: EV charging and renewable energy systems.

8. Simulation in PLECS Parameters: Input 95V, Output 400V, Power: 1-2 kW. Key Components: - Transformer (turn ratio 4:1), MOSFETs, and capacitors. Digital PI Controller used for regulation.

9. Results and Observations Output Voltage: Stable at 400V with minimal ripple. Load Current: Smooth transition, consistent with load resistance. Waveforms validate DAB's efficiency and reliability.

10. Conclusion DAB Converter achieves efficient and stable power transfer. Supports high-power, bidirectional energy conversion for EV and renewable systems.

11. Future Scope Expand design for higher power ratings. Integrate with smart grids for energy storage and load management. Explore advanced semiconductors like GaN and AI-based control strategies.

12. Acknowledgements Guidance by Ms. Hinal Surati. Support from faculty and peers at C.G.P.I.T., UTU. Encouragement from family.