Multidisciplinary Design Optimization of the Actuation System of a Hybrid Electric Aircraft Powertrain

Electronics

Matthieu Fénot¹  Bruno Sareni²  Xavier Roboam²  Yvan Lefevre²  Jean-François Llibre²  MatthieuPettes Duler² 

[1] Institut Pprime, Université de Poitiers, CNRS, 86360 Poitiers, France;LAPLACE, Université de Toulouse, CNRS, INPT, UPS, 31055 Toulouse, France;

关键词: aircraft;    hybrid electric;    optimization;    MDO;    synchronous motors;    thermal coupling;   

DOI  :  10.3390/electronics10111297

来源: DOAJ

【 摘 要 】

In the context of hybrid electric and full electric powertrains for future less-pollutant aircrafts, this paper focuses on the multidisciplinary design optimization (MDO) of the actuation system, including a surface-mounted PMSM in order to maximize the power density of the device: this study is a preliminary approach before integrating the whole powertrain. After an introduction of the MDO context, the analytical model of the electric motor is detailed. It integrates multi-physical aspects (electric, magnetic, mechanical, thermal, partial discharges and insulation, control and flight mission) and takes several heterogeneous design constraints into account. The optimization method involves a genetic algorithm allowing the reduction of the actuation weight with regard to a wide set of constraints. The results show the crucial sensitivity of the electro-thermal coupling, especially the importance of transient modes during flight sequences due to thermal capacitance effects. Another major point is related to the performance of the thermal cooling, which requires the introduction of an “internal cooling” in the stator slots in addition to the “base cooling” for stator and rotor. Gathering these analyses, the MDO leads to high power density actuators beyond 15 kW/kg with high-voltage–high-speed solutions, satisfying all design constraints (insulation, thermal, magnet demagnetization) over the flight mission.

【 授权许可】

Unknown