公开(公告)号：US20160315558A1

公开(公告)日：2016-10-27

申请号：US15092372

申请日：2016-04-06

Applicant: ROLLS-ROYCE plc

Inventor： Meng Yeong LEE ,  Chandana Jayamapathi GAJANAYAKE ,  Shantha Dharmasiri Gamini JAYASINGHE ,  Sivakumar NADARAJAN ,  Amit Kumar GUPTA

IPC: H02M7/537

CPC classification number: H02M7/537 ,  H02M1/32 ,  H02M7/5387 ,  H02M7/5395 ,  H02M2001/327

Abstract: A method of controlling an inverter, in which the inverter includes a single-phase inverter arrangement comprising a complementary pair of power switches, comprises the steps of:controlling the complementary pair of power switches with a modulating signal to output an AC signal;judging which of the power switches in the complementary pair of power switches is at a higher temperature;determining the magnitude and sign of a DC offset signal to apply to the modulating signal to reduce the total current in the power switch judged to be at the higher temperature; andapplying the DC offset signal to the modulating signal.

Abstract translation: 将DC偏移信号应用于调制信号。

公开(公告)号：US20160172935A1

公开(公告)日：2016-06-16

申请号：US14942064

申请日：2015-11-16

Applicant: ROLLS-ROYCE plc

Inventor： Stephen J MOUNTAIN ,  Chandana Jayampathi GAJANAYAKE ,  Meng Yeong LEE

IPC: H02K7/20 ,  H02K7/116 ,  H02K11/00

CPC classification number: H02K7/20 ,  F16H3/724 ,  H02K7/116 ,  H02K11/0073 ,  H02K11/38 ,  H02P5/747 ,  H02P27/04

Abstract: A variable speed drive arrangement including: a load; a gearbox to supply mechanical drive to the load; a converter electrically coupled with a power grid. Also a primary electrical machine to supply mechanical power to the gearbox and to receive electrical power; and a secondary electrical machine mechanically coupled to the gearbox and electrically coupled to the converter. An electrical circuit breaker to selectively electrically couple the primary electrical machine to the secondary electrical machine or to the power grid; wherein the secondary electrical machine is adapted to supply or extract mechanical energy from the gearbox and to receive or deliver electrical energy to the converter. Also a control method for the arrangement including a starting mode and a running mode.

Abstract translation: 一种变速驱动装置，包括：负载; 一个为负载提供机械驱动的变速箱; 与电网电耦合的转换器。 还有一个主要的电机向齿轮箱提供机械动力并接收电力; 以及机械地联接到所述齿轮箱并且电耦合到所述转换器的次级电机。 一种用于选择性地将初级电机电耦合到次级电机或电网的电路断路器; 其中所述次级电机适于从所述齿轮箱供应或提取机械能并将所述电能接收或传送到所述转换器。 还有一种用于包括启动模式和运行模式的装置的控制方法。