US 12,234,022 B2
Electrical energy system for barring rotor
Peter Schenk, Indianapolis, IN (US); and Mark Angelo Tanner, London (GB)
Assigned to Rolls-Royce North American Technologies, Inc., Indianapolis, IN (US); and Rolls-Royce pic, London (GB)
Filed by Rolls-Royce North American Technologies, Inc., Indianapolis, IN (US); and Rolls-Royce plc, London (GB)
Filed on Aug. 12, 2022, as Appl. No. 17/819,509.
Prior Publication US 2024/0055957 A1, Feb. 15, 2024
Int. Cl. B64D 31/00 (2024.01); B60L 50/52 (2019.01); B64D 27/10 (2006.01); B64D 27/24 (2006.01); H02J 7/00 (2006.01); H02K 7/00 (2006.01); H02K 7/18 (2006.01); H02K 11/33 (2016.01); B64D 27/02 (2006.01)
CPC B64D 31/00 (2013.01) [B60L 50/52 (2019.02); B64D 27/10 (2013.01); B64D 27/24 (2013.01); H02J 7/0013 (2013.01); H02J 7/0063 (2013.01); H02K 7/003 (2013.01); H02K 7/1823 (2013.01); H02K 11/33 (2016.01); B60L 2200/10 (2013.01); B64D 27/026 (2024.01); H02J 2207/20 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A system comprising:
an electrical machine electrically configured to generate electrical energy used by one or more components of a gas-turbine engine;
an energy storage system; and
a controller electrically connected to the energy storage system and configured to receive electrical energy from the energy storage system,
wherein, in response to the gas-turbine engine being shut off, the controller is configured to cause the electrical machine to rotate a rotor of the gas-turbine engine at a speed of less than 100 revolutions per minute using the energy received from the energy storage system.