Lecture 07 Dual Active Bridge converter - I

🚗⚡ Dual Active Bridge (DAB) Converter – I | Bidirectional DC–DC Converter | Electric Vehicles | Lecture 07 The Dual Active Bridge (DAB) Converter is one of the most widely used isolated bidirectional DC–DC converters in modern electric vehicles, battery energy storage systems, and DC microgrids. In this lecture, we begin with the motivation for DAB converters by reviewing the limitations of the forward converter, followed by a detailed introduction to the DAB converter topology, its construction, operating principle, and switching sequence. The lecture explains why DAB converters have become the preferred choice for high-power applications by enabling bidirectional power transfer, better transformer utilization, and high efficiency. The converter structure consisting of two active full bridges connected through a high-frequency transformer and an inductor is introduced, along with the gate signals and current flow paths during different operating conditions. 📚 Topics Covered ✅ Review of Forward Converter ✅ Limitations of the Forward Converter ✅ Need for Bidirectional Isolated DC–DC Converters ✅ Introduction to Dual Active Bridge (DAB) Converter ✅ DAB Circuit Topology ✅ Construction of DAB Converter ✅ High-Frequency Transformer and Inductor ✅ Advantages of DAB Converters ✅ Bidirectional Power Flow ✅ Switching Pattern of the Primary Bridge ✅ Gate Pulse Generation ✅ Current Flow Through Switches and Anti-Parallel Diodes ✅ Foundation for DAB Operation and Control 🎯 Who Should Watch? B.Tech. & M.Tech. students Power Electronics learners Electric Vehicle enthusiasts GATE & ESE aspirants Researchers working in DC–DC converters Engineers designing isolated bidirectional power converters 📖 Recommended References R. W. Erickson and D. Maksimović, Fundamentals of Power Electronics, 2nd Edition, Springer. A. R. Rodríguez et al., "An Overall Study of a Dual Active Bridge for Bidirectional DC/DC Conversion," IEEE ECCE, 2010. #DualActiveBridge #DABConverter #BidirectionalConverter #PowerElectronics #ElectricVehicles #DCDCConverter #BatteryCharging #BatteryEnergyStorage #HighFrequencyTransformer #ElectricalEngineering #EVCharging #ChargingInfrastructure #DCMicrogrid #PowerConverter #IGBT #MOSFET #EngineeringStudents #GATE #NPTEL #IITRoorkee