公开(公告)号：US20240237283A9

公开(公告)日：2024-07-11

申请号：US18373861

申请日：2023-09-27

申请人： ROLLS-ROYCE PLC

发明人： Chandana J. GAJANAYAKE ,  Shuai WANG ,  Pranshu KHARBANDA

IPC分类号： H05K7/20

CPC分类号： H05K7/20272 ,  H05K7/20254

摘要： A thermal management system for cooling at least one electronic component, the thermal management system including: a heat exchanger connectable to at least one electronic component, the heat exchanger configured to dissipate heat generated by the at least one electronic component; a plurality of cooling channels each connected to a respective pump and the heat exchanger, wherein: each cooling channel is configured to carry fluid between the heat exchanger and the respective pump, and each pump is configured to pump fluid along the respective cooling channel such that fluid carried by each cooling channel flows through the heat exchanger.

公开(公告)号：US20190081532A1

公开(公告)日：2019-03-14

申请号：US16124240

申请日：2018-09-07

申请人： ROLLS-ROYCE plc

发明人： Ellis FH CHONG ,  Shanmukha RAMAKRISHNA ,  Vaiyapuri VISWANATHAN ,  Shuai WANG

IPC分类号： H02K7/04 ,  H02K1/24 ,  H02K11/30 ,  H02K7/18 ,  F01D15/00

摘要： An electrical machine has a variable reluctance rotor, and a stator formed as an annular array of stator segments. The reluctance of the rotor-to-stator magnetic flux path varies with rotor position whereby the stator segments are magnetically energizable to rotate the rotor. The stator segments are arranged in the array such that, when energized to rotate the rotor, they produce an unbalanced force on the rotor. The machine further has a compensator including one or more balancing segments which are configured to be magnetically energizable to produce a balancing force on the rotor which balances the unbalanced force. The reluctance of the rotor-to-compensator magnetic flux path is substantially invariant with rotor position.

公开(公告)号：US20240138108A1

公开(公告)日：2024-04-25

申请号：US18373861

申请日：2023-09-26

申请人： ROLLS-ROYCE PLC

发明人： Chandana J. GAJANAYAKE ,  Shuai WANG ,  Pranshu KHARBANDA

IPC分类号： H05K7/20

CPC分类号： H05K7/20272 ,  H05K7/20254

摘要： A thermal management system for cooling at least one electronic component, the thermal management system including: a heat exchanger connectable to at least one electronic component, the heat exchanger configured to dissipate heat generated by the at least one electronic component; a plurality of cooling channels each connected to a respective pump and the heat exchanger, wherein: each cooling channel is configured to carry fluid between the heat exchanger and the respective pump, and each pump is configured to pump fluid along the respective cooling channel such that fluid carried by each cooling channel flows through the heat exchanger.

公开(公告)号：US20240063729A1

公开(公告)日：2024-02-22

申请号：US18358235

申请日：2023-07-25

申请人： ROLLS-ROYCE plc

发明人： Shuai WANG ,  Chandana J. GAJANAYAKE ,  Amit K. GUPTA

IPC分类号： H02M7/219 ,  H02J3/38 ,  H02M7/217

CPC分类号： H02M7/219 ,  H02J3/381 ,  H02M7/2173 ,  H02J2310/44

摘要： An electrical machine with a rotor coupled to a drive shaft of an engine; a DC electrical network; a power electronics converter connected, on a DC-side, to the DC electrical network, and, on an AC-side, to the electrical machine, the power electronics converter comprising a plurality of transistors and associated diodes connected in anti-parallel with the transistors; and a controller configured to control switching of the transistors so that the converter either inverts DC power to AC power or rectifies AC power to DC power. The controller is further configured, responsive to a determination that there is a fault in the DC electrical network, to operate in a fault mode in which the controller controls the switching of the transistors so that a fault current is shared between the transistors and the associated diodes.