公开(公告)号：US20150381081A1

公开(公告)日：2015-12-31

申请号：US14747437

申请日：2015-06-23

Applicant: ROLLS-ROYCE PLC

Inventor： Bikramjit Singh BHANGU ,  Chandana Jayampathi GAJANAYAKE ,  Don Mahinda VILATHGAMUWA ,  Gilbert Hock Beng FOO

IPC: H02P6/00 ,  H02P23/14

CPC classification number: H02P23/14 ,  H02P6/34 ,  H02P21/0089 ,  H02P21/141 ,  H02P21/18

Abstract: A method of controlling an AC machine that includes a stator and a rotor, wherein the method includes, whilst operating the AC machine according to an overmodulation technique: determining a reference speed for controlling the operation of the AC machine; filtering the reference speed such that if the reference speed exceeds a speed limit of the AC machine, the reference speed is reduced towards that speed limit; and controlling the operation of the AC machine based on the filtered reference speed. It has been found that controlling the AC machine in this way helps to inhibit “windup” of a controller used to implement the method, even if the overmodulation technique sets a non-constant maximum voltage.

Abstract translation: 一种控制包括定子和转子的交流电机的方法，其中所述方法包括：根据过调制技术操作所述交流电机;确定用于控制所述交流电机的操作的参考速度; 过滤参考速度，使得如果参考速度超过交流电机的速度限制，则基准速度降低到该速度限制; 并且基于滤波的参考速度来控制AC机器的操作。 已经发现，即使过调制技术设置非恒定的最大电压，也以这种方式控制AC电机有助于抑制用于实现该方法的控制器的“卷起”。

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。