公开(公告)号：EP0743745A2

公开(公告)日：1996-11-20

申请号：EP96303382.4

申请日：1996-05-14

申请人： HITACHI, LTD.

发明人： Ishida, Seiji ,  Okuyama, Toshiaki ,  Tobari, Kazuaki ,  Oohashi, Hironori ,  Tomita, Hiroyuki ,  Fuji, Hiroshi

IPC分类号： H02P21/00

CPC分类号： H02P21/36

摘要： By detecting that an induction motor has entered in regenerative running, the velocity or voltage is corrected such that the q-axis flux takes a negative value in regenerative running, thereby preventing the torque from being reduced by flux change and suppressing an insufficient torque.

摘要翻译： 通过检测感应电动机已经进入再生运行，对速度或电压进行校正，使得q轴磁通在再生运转中变为负值，从而防止转矩由于磁通变化而减小并且抑制不足的转矩。

公开(公告)号：EP0743745B1

公开(公告)日：2003-07-30

申请号：EP96303382.4

申请日：1996-05-14

申请人： Hitachi, Ltd.

发明人： Ishida, Seiji ,  Okuyama, Toshiaki ,  Tobari, Kazuaki ,  Oohashi, Hironori ,  Tomita, Hiroyuki ,  Fuji, Hiroshi

IPC分类号： H02P21/00

CPC分类号： H02P21/36

公开(公告)号：EP0743745A3

公开(公告)日：1997-03-05

申请号：EP96303382.4

申请日：1996-05-14

申请人： HITACHI, LTD.

发明人： Ishida, Seiji ,  Okuyama, Toshiaki ,  Tobari, Kazuaki ,  Oohashi, Hironori ,  Tomita, Hiroyuki ,  Fuji, Hiroshi

IPC分类号： H02P21/00

CPC分类号： H02P21/36

摘要： By detecting that an induction motor has entered in regenerative running, the velocity or voltage is corrected such that the q-axis flux takes a negative value in regenerative running, thereby preventing the torque from being reduced by flux change and suppressing an insufficient torque.