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1. 发明公开

EP3742596A1 POWER CONVERTER 有权
公开(公告)号：EP3742596A1
公开(公告)日：2020-11-25
申请号：EP20173175.9
申请日：2020-05-06
申请人： Rolls-Royce plc
发明人： Lai, Jih-Sheng , Venkatesh, Pabbathi , Liu, Xiong
IPC分类号： H02M7/08 , H02M5/458 , H02M1/12
摘要： A power converter. The power converter comprising: two or more multi-phase AC sources; an AC-DC converter circuit for each of the multi-phase AC sources, each AC-DC converter circuit being connected to a respective multi-phase AC source via a multi-phase input and configured to rectify a received multi-phase current into a DC current; a transformer, which is connected between the multi-phase AC inputs; a DC-link, shared between each of the AC-DC converter circuits; a load, connected to the DC-link and able to receive DC current therefrom; and a common mode filter, located within the DC-link, and configured to reduce a circulatory current which, when the power converter is in use, flows from the transformer through one of the AC-DC converter circuits, through the DC-link and through a further of the AC-DC converter circuits back to the transformer.

2. 发明公开

EP4012877A1 ELECTRICAL POWER SYSTEMS 有权
公开(公告)号：EP4012877A1
公开(公告)日：2022-06-15
申请号：EP21208370.3
申请日：2021-11-16
申请人： Rolls-Royce plc
发明人： Mountain, Stephen , Liu, Xiong , Venkatesh, Pabbathi
IPC分类号： H02J3/46
摘要： Electrical power systems and methods of controlling electrical power systems are described. One such electrical power system comprises: a first ac bus 21 and a first generator set 11, G1 configured to supply the first ac bus 21 with ac electrical power; a second ac bus 22 and a second generator set 12, G2 configured to supply the second ac bus 22 with ac electrical power; an interconnecting transformer 15 connected between the first and second ac busses 21, 22; a primary electrical load M1, M2 connected to both the first and second ac busses 21, 22 via a converter arrangement 31, 32; an auxiliary load 51 connected to the first ac bus 21; and a controller 17 configured to control the first generator set 11, G1 according to a first droop control profile and to control the second generator set 12, G2 according to a second droop control profile, the first and second droop control profiles relating respective generator operating frequencies of the first and second generator sets 11, G1; 12, G2 to respective output powers of the first and second generator sets 11, G1; 12, G2.

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