The invention discloses an energy management strategy of an aviation hybrid electric propulsion system, which realizes reasonable distribution of power between a power generation system and a power storage device. For a specific flight mission, the strategy comprises the following steps: 1) discretizing load demand power of the specific flight mission according to mission stages; 2) constructing a relation model between the output power of the power generation system and the fuel consumption per unit time of the engine and a relation model between the output power of the power storage device and the equivalent fuel consumption per unit time according to the system model; and 3) taking the power distribution ratio of each stage as a variable, taking the minimum global fuel consumption for completing the flight task as a target, taking the output power range of the power generation system and the power storage device as a limiting condition, and obtaining the power distribution ratio of each stage meeting the target through a genetic algorithm. According to the aviation hybrid electric propulsion system with the energy management strategy as the control requirement, the fuel consumption can be effectively reduced under the condition that the aircraft completes the target flight task.
本发明公开了一种航空混合电推进系统的能量管理策略,实现功率在发电系统和储电装置之间的合理分配。针对某具体的飞行任务,该策略包括步骤:1)将具体飞行任务负载需求功率按任务阶段离散化;2)根据系统模型构建发电系统输出功率与发动机单位时间油耗以及储电装置输出功率与等效单位时间油耗的关系模型;3)以各阶段功率分配比为变量,以完成该飞行任务的全局耗油量最低为目标,发电系统与储电装置输出功率范围为限制条件,通过遗传算法得出满足目标的各阶段的功率分配比。以该能量管理策略为控制要求的航空混合电推进系统能使飞行器在完成目标飞行任务的情况下有效降低耗油量。
Energy management strategy of aviation hybrid electric propulsion system
一种航空混合电推进系统的能量管理策略
2022-09-02
Patent
Elektronische Ressource
Chinesisch
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