公开(公告)号：EP3989416A1

公开(公告)日：2022-04-27

申请号：EP21200977.3

申请日：2021-10-05

申请人： The Boeing Company

发明人： LACAUX, Frederic ,  KARIMI, Kamiar J. ,  SOLODOVNIK, Eugene V. ,  KUTZMANN, Aaron J. ,  DARMSTADT, Patrick R. ,  BECKMAN, Mary E. ,  SILVA, Alejandro ,  SILVERI, Nicholas J. ,  ZIDOVETZKI, Esther S.

IPC分类号： H02K7/14 ,  H02K11/02 ,  H02K11/33 ,  B64D27/24 ,  B60L3/00 ,  B60L15/20

摘要： An electric propulsion unit comprising a housing, an AC motor, a beta rod, a propeller, a governor, an inverter, and a controller. The AC motor is disposed within the housing and includes a plurality of bearings supported inside the housing, a hollow motor shaft rotatably coupled to the housing by the plurality of bearings, a stator which is supported by the housing, and a rotor which is mounted to the hollow motor shaft. The beta rod is axially translatable inside the hollow motor shaft. The propeller is mechanically coupled to the hollow motor shaft. The propeller includes propeller blades having an adjustable pitch angle which depends on an axial position of the beta rod. The governor is configured to adjust a pitch angle of the propeller blades by actuating axial translation of the beta rod. The inverter is disposed within the housing and connected to receive DC power for conversion into AC power. The controller is disposed inside the housing and configured to control operation of the inverter and control the pitch angle of the propeller blades.