Energy efficiency optimization method for electric aircraft propulsion system

被引：0

作者：

Wang S. ^{[1
,2
,4
]}

Sun J. ^{[1
,4
]}

Kang G. ^{[1
,4
]}

Ma S. ^{[3
]}

机构：

[1] Liaoning General Aviation Academy, Shenyang

[2] Rhyxeon General Aircraft Co., Ltd. (RGAC), Shenyang

[3] School of Electrical Engineering, Shenyang University of Technology, Shenyang

[4] Key Laboratory of General Aviation, Shenyang Aerospace University, Shenyang

来源：

Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2021年 / 42卷 / 03期

关键词：

Electric aircraft; Electric propulsion systems; Energy efficiency optimization; Fixed pitch propeller; System loss;

D O I：

10.7527/S1000-6893.2020.23942

中图分类号：

学科分类号：

摘要：

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%. © 2021, Beihang University Aerospace Knowledge Press. All right reserved.

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