公开(公告)号：EP0234293A2

公开(公告)日：1987-09-02

申请号：EP87100947.8

申请日：1987-01-23

申请人： Kabushiki Kaisha Meidensha

发明人： Matsuse, Koki ,  Kubota, Hisao

IPC分类号： H02M5/45

CPC分类号： H02P27/06 ,  H02J3/1892 ,  H02M7/5152 ,  H02P2201/03

摘要： A reactive power processing circuit for a current source GTO invertor in which a reactive current generated from a load of the GTO invertor is rectified by means of a fly wheel circuit and is sent to a capacitor so as to store a commutation surge voltage generated wherever a commutation of the invertor occurs, an excessive charge voltage across the capacitor is regenerated to a direct current output side of a power rectifier, and a pair of GTO (Gate Turn Off Thyristors) thyuris- tors are connected between the capacitor and the direct current output side of the power rectifier in their forward directions so as to carry out a discharge operation for the excessive charge voltage across the capacitor. Consequently, with the number of circuit elements remarkably reduced, the reactive power processing at times of a high-frequency operation and accelertion/deceleration (variable speed) operation of the invertor can be achieved.

公开(公告)号：EP0234293B1

公开(公告)日：1990-11-14

申请号：EP87100947.8

申请日：1987-01-23

申请人： Kabushiki Kaisha Meidensha

发明人： Matsuse, Koki ,  Kubota, Hisao

IPC分类号： H02M5/45

CPC分类号： H02P27/06 ,  H02J3/1892 ,  H02M7/5152 ,  H02P2201/03