US 12,467,513 B2
Method and apparatus for actively damping vibrations in a hybrid-electric aircraft propulsion system
Richard Freer, St-Basile-le-Grand (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Aug. 25, 2023, as Appl. No. 18/238,250.
Prior Publication US 2025/0067318 A1, Feb. 27, 2025
Int. Cl. F16F 15/00 (2006.01); B64D 27/02 (2006.01); B64D 27/24 (2024.01); B64D 31/00 (2024.01); H02P 23/14 (2006.01)
CPC F16F 15/002 (2013.01) [B64D 27/24 (2013.01); B64D 31/00 (2013.01); H02P 23/14 (2013.01); B64D 27/026 (2024.01)] 18 Claims
OG exemplary drawing
 
1. A method of damping vibrations in a hybrid-electric propulsion system configured to drive a propulsor, the hybrid-electric propulsion system including a thermal engine, an electric motor, and an inverter, the method comprising:
a) controlling the thermal engine and the electric motor to operate at a target propulsion parameter, wherein the inverter is used in the controlling of the electric motor;
b) determining a presence of a vibrational response within the hybrid-electric propulsion system;
c) producing a vibration compensation signal configured to damp the vibrational response within the hybrid-electric propulsion system; and
d) controlling the electric motor to damp the vibrational response using the vibrational compensation signal,
wherein the determination of the presence of the vibrational response within the hybrid-electric propulsion system is based on variations in a propulsion parameter of the electric motor.