公开(公告)号：US20210004029A1

公开(公告)日：2021-01-07

申请号：US16916841

申请日：2020-06-30

申请人： ROLLS-ROYCE plc

发明人： Vladimir A. SHIROKOV ,  Zafer JARRAH

IPC分类号： G05F1/46 ,  H02J1/00 ,  B64D41/00 ,  B63H21/17

摘要： A method of controlling two or more sources of electrical power to supply electrical power to a shared bus. Each source of electrical power has a rated power Pr, a maximum overload power Pm, and is operable along a multi-voltage droop slope, the multi-voltage droop slope including a share region and a catch region, the share region being defined by an upper voltage limit, Vhigh and a base voltage Vbase, and the catch region being defined by the base voltage Vbase and a lower voltage limit Vlow.

公开(公告)号：US20200263545A1

公开(公告)日：2020-08-20

申请号：US16779712

申请日：2020-02-03

申请人： ROLLS-ROYCE plc

发明人： Chloe J. PALMER ,  Vladimir A. SHIROKOV

IPC分类号： F01D1/26 ,  F04D19/02

摘要： Turbomachinery comprising first and second sets of rotors configured to operate on a working fluid. The machinery further comprises first and second sets of electric machines coupled to the respective first and second rotors, and a coupling arrangement arranged to couple adjacent rotors of the first and second rotor sets to provide for fixed ratio, contra-rotation of the first and second rotor sets.