公开(公告)号：US20160218650A1

公开(公告)日：2016-07-28

申请号：US15001781

申请日：2016-01-20

Applicant: ROLLS-ROYCE plc

Inventor： Chandana Jayampathi GAJANAYAKE ,  Amit Kumar GUPTA ,  Robert SLATER ,  Bikramjit BHANGU ,  Gilbert Hock Beng FOO ,  Don Mahinda VILATHGAMUWA

IPC: H02P9/10 ,  F01D15/12 ,  F01D25/04 ,  F01D15/10

CPC classification number: H02P9/102 ,  F01D15/10 ,  F01D15/12 ,  F01D25/04 ,  F05D2220/30 ,  F05D2260/40311 ,  F05D2260/96 ,  F16F15/002 ,  F16F15/18

Abstract: The invention concerns the damping of torsional oscillations/vibrations, particularly during electrical power generation within a gas turbine such as a civil aviation engine. The method of the invention relies on actively generating compensating oscillations in a driveline of a system to actively damp undesirable oscillations existing in the system.

Abstract translation: 本发明涉及扭转振动/振动的阻尼，特别是在诸如民用航空发动机的燃气轮机内的发电期间。 本发明的方法依赖于主动产生系统的传动系统中的补偿振荡，以主动地抑制系统中存在的不期望的振荡。

公开(公告)号：US20140225659A1

公开(公告)日：2014-08-14

申请号：US14167088

申请日：2014-01-29

Applicant: ROLLS-ROYCE PLC

Inventor： Bikramjit BHANGU ,  Mohamed Halick Mohamed SATHIK ,  Sivakumar NADARAJAN ,  Chandana Jayampathi GAJANAYAKE

IPC: H03K17/14

CPC classification number: H03K17/145 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A thermal controller for driving a gate control unit of a gate-driven semiconductor switching device, the thermal controller comprising a junction temperature estimation module for generating an estimated junction temperature for the switching device, a gate voltage control module for modifying a gate voltage of the switching device, a switching frequency control module for modifying a switching frequency of the switching device, and a duty cycle control module for modifying the duty cycle of the switching device. In use, the thermal controller is adapted to activate one of the gate voltage control module, switching frequency control module and duty cycle control module dependent upon the estimated junction temperature in order to maintain the actual junction temperature below a pre-determined limit.

Abstract translation: 一种用于驱动栅极驱动半导体开关器件的栅极控制单元的热控制器，所述热控制器包括用于产生所述开关器件的估计结温的结温估计模块，用于修改所述栅极电压的栅极电压的栅极电压控制模块 开关装置，用于修改开关装置的开关频率的开关频率控制模块，以及用于修改开关装置的占空比的占空比控制模块。 在使用中，热控制器适于根据估计的结温激活门电压控制模块，开关频率控制模块和占空比控制模块中的一个，以便将实际结温保持在预定极限以下。