Project Summary
We conduct a conceptual design of a hybrid, self-generating and super-fast charging system for electric aircraft.
Project Achievements
In the Centre for Energy Systems and Strategy at Cranfield University, we used a T-TRIG grant to fund the conceptual design of the A2G as a hybrid and smart charging system. The approach for A2G system design includes: 1. design A2G system infrastructure, 2. develop smart charging management scheme; 3. conduct case studies of A2G system in airports.
Smart A2G charging system with battery swap is developed to meet electric aircraft charging requirements based on flight schedules. A novel A2G energy control strategy is proposed for aircraft charging and grid services. The hourly energy dispatch strategy is produced to minimise charging costs. Case studies are conducted in 8 UK airports assuming all domestic flights will be electrified.
Conclusions
The project findings show that 8GWh daily energy consumption is required for electric aircraft charging in 8 UK airports. A2G system can cover 50% off-grid charging to relieve energy requirements from the grid. 20% of charging energy is supplied by renewable energy sources. Battery swap with combined gas turbine, PV and grid can supply superfast charging to meet busy flight schedules, so that each electric aircraft can complete charging within 50 minutes.
The A2G system can provide effective grid ancillary services across the 8 UK airports, with response power of 1,000 to 1,400 MW overnight and 200 to 600 MW during daytime. Annual A2G charging costs are estimated at £230 million, while it’s grid ancillary services can generate £45 million revenue for airports.
