公开(公告)号：US10374500B2

公开(公告)日：2019-08-06

申请号：US15528398

申请日：2016-03-31

申请人： THE SWITCH DRIVE SYSTEMS OY

发明人： Panu Kurronen ,  Markus Silventoinen ,  Jussi Puranen

IPC分类号： H02K16/02 ,  H02K1/27 ,  H02K1/28 ,  H02K21/02 ,  F01D5/06 ,  H02K1/30 ,  B63J3/02 ,  B63H23/24 ,  F01D5/30 ,  B63J3/00

摘要： A rotor for a permanent magnet machine includes first and second axially successive rotor sections each including permanent magnets generating magnetic field having a pole pitch. The rotor includes a first coupling system for connecting the first rotor section to a shaft and a second coupling system for connecting the second rotor section to the shaft or to the first rotor section. The second rotor section is rotatable with respect to the first rotor section by an angle corresponding to the pole pitch in response to releasing the second coupling system so as to set the stator flux-linkages generated by the first and second rotor sections to be substantially zeroes. Thereafter, the permanent magnets do not substantially induce voltages on the stator windings even if the rotor is rotating during for example an internal fault of stator windings.