公开(公告)号：US3928794A

公开(公告)日：1975-12-23

申请号：US51814874

申请日：1974-10-25

Applicant: ASEA AB

Inventor： BROMS ANDERS ,  FRANK KJELL

IPC: H02M7/515 ,  H02M7/00

CPC classification number: H02M7/5155

Abstract: In an inverter with a plurality of connection groups, each of which includes positive and negative points of connection for connection to a feeding direct current voltage source and an alternating current terminal, controllable main rectifiers are connected between the positive point of connection and the alternating current terminal and between the alternating current terminal and the negative point of connection, with a commutating capacitor having one terminal connected to the alternating current terminal. There are a second positive and a second negative point of connection connected to a commutating direct voltage source, with controllable commutating rectifiers connected between the second positive point of connection and the second terminal of the commutating capacitor and between the second terminal of the capacitor and the second negative point of connection. Two pairs of windings are provided which are magnetically coupled to each other. One pair of windings has a winding connected between the first rectifier and the alternating current terminal and the second winding in series with the first commutating rectifier. The second pair of windings has one winding connected between the alternating current terminal and the second main rectifier and the second in series with the second commutating rectifier. A feedback valve has its anode connected to a point between the second main rectifier and the first winding of the second pair and its cathode connected to the first positive point of connection; and a second feedback valve has its anode connected to the first negative point of connection and its cathode to a point between the first main rectifier and the first winding of the first pair of windings.

Abstract translation: 在具有多个连接组的逆变器中，每个连接组包括用于连接到馈电直流电压源和交流端子的正和负连接点，可控主整流器连接在正极连接点和交流电 端子之间以及交流端子和负极连接点之间，具有一个端子连接到交流端子的整流电容器。 连接到换向直流电压源的第二正极和第二负极连接点，连接在第二正极连接点和换向电容器的第二端子之间以及电容器的第二端子之间的可控整流整流器 第二个负点连接。 提供了两对彼此磁耦合的绕组。 一对绕组具有连接在第一整流器和交流端子之间的绕组，而第二绕组与第一整流整流器串联连接。 第二对绕组具有连接在交流端子和第二主整流器之间的一个绕组，而第二绕组与第二整流器串联。 反馈阀的阳极连接到第二主整流器和第二对的第一绕组之间的点，其阴极连接到第一正连接点; 并且第二反馈阀的阳极连接到第一负连接点及其阴极连接到第一主整流器和第一对绕组的第一绕组之间的点。