公开(公告)号：US3857083A

公开(公告)日：1974-12-24

申请号：US43661974

申请日：1974-01-25

Applicant: ASEA AB

Inventor： LUNDSTROM H

IPC: H02H7/12 ,  H02H7/14

CPC classification number: H02H7/1206

Abstract: In convertor equipment which includes a plurality of convertor bridges connected in parallel on the AC side, the AC terminals of all the convertors are connected to the same AC source. Each convertor bridge is an unsymmetrical semi-controlled bridge, composed of two controllable and two non-controllable rectifiers. The bridges have their DC terminals connected to a common load, such as an armature of a DC motor. The AC terminals of the bridges are connected to the secondary winding of a transformer, the primary winding of which is connected to a feeding AC network. Fuses for protecting the rectifiers against overcurrents are provided in the AC leads which are connected to the connecting points between the two branches of each bridge which contains non-controllable rectifiers.

Abstract translation: 在包括在AC侧并联连接的多个转换器桥的转换器设备中，所有转换器的AC端子连接到相同的AC电源。 每个转换桥是一个不对称的半控桥，由两个可控和两个不可控整流器组成。 桥接器的直流端子连接到公共负载，例如直流电动机的电枢。 桥的AC端子连接到变压器的次级绕组，其一次绕组连接到馈电AC网络。 在连接到每个桥的两个分支之间的连接点的AC引线中提供了用于保护整流器免于过电流的保险丝，其中包含不可控整流器。