公开(公告)号：US20230234715A1

公开(公告)日：2023-07-27

申请号：US18152342

申请日：2023-01-10

Applicant: ROLLS-ROYCE plc

Inventor： Conor HICKEY ,  Andrew MACKAY

IPC: B64D27/24 ,  B64D27/12 ,  H02K7/18 ,  H02J7/34

CPC classification number: B64D27/24 ,  B64D27/12 ,  H02K7/1823 ,  H02J7/34 ,  B64D2027/026

Abstract: A hybrid power system for an aircraft comprises a gas turbine connected to a generator for generating electrical power; an electrical storage device configured to output electrical power; a propulsor; a motor operable to drive the propulsor using electrical power from either or both of the generator and the electrical storage device; and a controller. The controller, to meet propulsor power demand, is configured to control an amount of electrical power generated by the generator, and an amount of electrical power outputted by the electrical storage device. In a first control mode coinciding with an increase in the propulsor power demand sufficient to cause a transient excursion of the operating point of a compressor of the gas turbine from a steady state working line, the controller is further configured to temporarily increase the amount of electrical power outputted by the electrical storage device such that the transient excursion is reduced.

公开(公告)号：US20160079899A1

公开(公告)日：2016-03-17

申请号：US14831433

申请日：2015-08-20

Applicant: ROLLS-ROYCE PLC

Inventor： Ellis FH CHONG ,  Andrew MACKAY

IPC: H02P9/48 ,  H02K7/18 ,  H02K19/32

CPC classification number: H02P9/48 ,  H02K7/1823 ,  H02K19/32

Abstract: A variable speed generator for producing AC electrical power includes an alternator powerable by rotational action to generate a first AC current, and a first rectifier which rectifies the first AC current from the alternator. The generator further includes a main exciter having a first field winding which receives the rectified first AC current, and having a first armature which produces in response a second AC current. The generator further includes a second rectifier which rectifies the second AC current from the first armature. The generator further includes a main generator having a second field winding which receives the rectified second AC current, and having a second armature which produces in response an output AC current. The second field winding is configured to provide a plurality of selectively activatable pole configurations which differ in the number of their poles, such that the frequency of the output AC current can be varied by switching between the pole configurations. The variable speed generator further includes a control arrangement for activating the selected pole configuration.

Abstract translation: 用于产生交流电功率的变速发电机包括可通过旋转动作供电以产生第一交流电的交流发电机和从交流发电机整流第一交流电流的第一整流器。 发电机还包括主激励器，其具有接收经整流的第一AC电流的第一场绕组，并且具有响应于第二AC电流产生的第一电枢。 发电机还包括第二整流器，其对来自第一电枢的第二AC电流进行整流。 发电机还包括主发电机，其具有接收经整流的第二AC电流的第二场绕组，并且具有响应于输出AC电流产生的第二电枢。 第二场绕组被配置为提供多个可选择地激活的极配置，其极数不同，使得可以通过在极配置之间切换来改变输出AC电流的频率。 变速发电机还包括用于启动所选择的极配置的控制装置。