United States: Power and thermal management solutions provider Delta has begun work on a three-year research program, with 50% cost-share by the US Department of Energy, to develop a solid-state transformer (SST)-based extreme fast electric vehicle charger (XFC) and provide capable EVs with a 300-km range with less than 10 minutes of charging.
“By utilizing solid-state transformer technology, we have the opportunity to create unprecedented charging speed and convenience that will ultimately help support the DOE’s strategic goal of increasing EV adoption across the nation,” says M.S. Huang, president of Delta Electronics (Americas).
The proposed XFC design utilizes medium-voltage alternating current at 4.8 kV or 13.2 kV. The proposed SST enables a 3.5 % improvement in grid-to-vehicle efficiency up to 96.5 %, as well as a high-voltage direct current (HVDC) port to utilize energy storage and renewable energy systems, minimizing demand on the power grid.
The prototype is expected to be ready in 2020.