一种电动飞机电推进系统的能效优化方法

doi:10.7527/S1000-6893.2020.23942

Abstract

Abstract: Electric propulsion systems provide power for electric aircraft, while the energy density of batteries limits the endurance capacity of electric aircraft. It is, therefore, of essential significance to optimize the energy efficiency of electric propulsion systems, improving the efficiency, reducing the system loss and consequently increasing the endurance time of electric aircraft. For a given two-seater controllable pitch propeller electric aircraft, a system loss model of the electric propulsion system in takeoff and cruise stages is established according to the mission profile of the electric aircraft. A novel energy efficiency optimization method tailored for controllable fixed pitch propeller electric aircraft is proposed with the pitch angle of the propeller with adjustable pitch as the optimal variable and minimizing the total energy consumption of one flight as the goal. To verify the effectiveness of this method, a prototype test platform is built, followed by a prototype test. Experimental results suggest that the energy efficiency optimization method can achieve better energy efficiency while reducing the energy consumption by more than 8%.

Key words: electric aircraft, electric propulsion systems, energy efficiency optimization, system loss, fixed pitch propeller

CLC Number:

V272

WANG Shuli, SUN Jinbo, KANG Guiwen, MA Shaohua. Energy efficiency optimization method for electric aircraft propulsion system[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(3): 623942-623942.

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Energy efficiency optimization method for electric aircraft propulsion system

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