公开(公告)号：EP3459091A1

公开(公告)日：2019-03-27

申请号：EP17800158.2

申请日：2017-05-18

申请人： ABB Schweiz AG ,  Suryanarayana, Harish ,  Liang, Jiaqi ,  Kittila, Jukka-Pekka ,  Ouyang, Wen

发明人： SURYANARAYANA, Harish ,  LIANG, Jiaqi ,  KITTILA, Jukka-Pekka ,  OUYANG, Wen

IPC分类号： H01F21/02 ,  H01F21/08 ,  H01F17/06 ,  H01F41/02 ,  H01F29/14 ,  H01F3/14 ,  H02J50/12 ,  H02J50/10

公开(公告)号：EP3806293A1

公开(公告)日：2021-04-14

申请号：EP20210217.4

申请日：2016-01-19

申请人： ABB Schweiz AG

发明人： TREMELLING, Darren ,  ARSHAD, Waqas ,  WESTERLUND, Jan ,  OUYANG, Wen ,  SHRESTHA, Ghanshyam

IPC分类号： H02K11/04 ,  H02K21/12 ,  H02K19/36 ,  H02P9/30 ,  H02K3/20 ,  H02K19/12 ,  H02K11/042

摘要： A synchronous machine and related systems include a stator and rotor separated by an air gap. The rotor includes a rotating DC power supply coupled to exciter windings disposed adjacent the air gap. Power from air gap harmonics, including air gap slot harmonics induce current in the exciter windings, which is rectified and supplied to the rotor field windings. In operation, a desired current level in the rotor field windings can be achieved through control of the DC power supply or superposition of harmonics into the stator winding current which induces the prescribed current in exciter windings.