An Architecture for Level-3 EV Battery Charger Stations Using Integrated Solid State Transformer (I-SST)

摘要

This paper proposes a new battery charger station architecture based on Integrated Solid-State Transformer (I-SST). The system consists of modular AC-AC converters with 20 kHz isolation and direct three-phase AC- DC Medium Voltage (MV) conversion. Output DC voltage regulation is achieved with a simple control scheme. Zero Voltage Switching (ZVS) is achievable for a wide output voltage range using phase-shift modulation. To comply with IEEE-519 standard, an Active Power Filter circuit block is employed. Simulation and experimental results are discussed.