公开(公告)号：US20150309108A1

公开(公告)日：2015-10-29

申请号：US14692917

申请日：2015-04-22

Applicant: GE Energy Power Conversion GmbH

Inventor： Martin GESKE ,  Robert OESTERLE ,  Siegfried NOWAK

IPC: G01R31/26

CPC classification number: G01R31/263

Abstract: A thyristor circuit comprising at least one series circuit in which two or more thyristors are connected in series. Each thyristor is parallel-connected to an RC member. A control device can energize the thyristors individually and independently of each other by a control signal, so that each thyristor can be individually switched into its conducting condition. During a test sequence, the thyristors are switched successively into their conducting condition, wherein, in a series circuit and/or in the thyristor circuit, respectively only one thyristor is in its conducting condition. While a thyristor is conducting, the capacitor of the associate RC member discharges and produces a thyristor current. As a result, the conducting condition is maintained until the thyristor current falls below the holding current. The control device can use the thyristor voltage and/or the thyristor current to evaluate the function or the switching behavior of the thyristor.

Abstract translation: 一种晶闸管电路，包括至少一个其中两个或多个晶闸管串联连接的串联电路。 每个晶闸管并联连接到RC构件。 控制装置可以通过控制信号单独并且彼此独立地通电晶闸管，从而每个晶闸管可以单独地切换到其导通状态。 在测试序列期间，晶闸管连续切换到其导通状态，其中在串联电路和/或晶闸管电路中，只有一个晶闸管处于其导通状态。 当晶闸管导通时，关联RC元件的电容器放电并产生晶闸管电流。 结果，保持导通条件，直到晶闸管电流下降到保持电流以下。 控制装置可以使用晶闸管电压和/或晶闸管电流来评估晶闸管的功能或开关特性。