| Popis: |
Fuel cell has received more and more attention in the field of green aviation in recent years due to their zero-emission and pollution-free advantages. In this paper, a flight mission model of a distributed electric propulsion aircraft is established, and an energy management strategy based on an improved multi-dimensional coupled state machine is designed by considering factors such as multi-mission profile power requirements and failure emergency measures for the aviation electric propulsion hybrid power system. The strategy is based on a state machine and divides the operation of the distributed electric propulsion aircraft into four states: climb, cruise, descent, and malfunction. The overall operation test of the aircraft model is carried out based on the four states, and the research results indicate that compared with the load-following mode control strategy, the proposed strategy increases the average fuel cell (FC) efficiency by 3.83%. In addition, the proposed strategy saves 7.95% of hydrogen and can effectively ensure flight safety in the event of a malfunction. |
