Introduction
This project proposes a novel three-port partial power converter designed for Electric Vehicle (EV) onboard fast charging applications. The converter integrates partial power processing (PPP) at the bidirectional DC-DC stage, reducing voltage stress on power devices and improving overall charger efficiency compared to conventional two-stage full power processing topologies. The design facilitates high efficiency, reduced charging times, compact size, and cost reduction, making it an attractive solution for EV fast chargers.
Objectives
- Design and develop a three-port boost AC-DC converter supporting partial power processing.
- Reduce device voltage stress, thereby improving reliability and efficiency.
- Enable fast onboard EV charging with optimized power flow among grid, battery, and auxiliary ports.
- Validate the converter performance through simulation and hardware prototype testing.
Methodologies
- Circuit design of a three-port partial power converter topology.
- Implement control algorithms to manage power flow between the ports.
- Simulation using MATLAB/Simulink for performance evaluation under varying loads.
- Laboratory prototype development for practical validation.
- Measurement of efficiency, voltage stress, charging time, and thermal performance.
Expected Outcomes
- High-efficiency EV onboard charger with reduced voltage stress on switching devices.
- Reduced charging time due to partial power processing approach.
- Compact and cost-effective converter design.
- Prototype validation demonstrating improved performance compared to full power processing chargers.
Applications
- Onboard fast chargers for electric vehicles.
- Hybrid energy systems integrating multiple energy sources.
- Smart grid-compatible vehicle charging infrastructure.
