公开(公告)号：US3705341A

公开(公告)日：1972-12-05

申请号：US3705341D

申请日：1971-05-07

Applicant: ASEA AB

Inventor： FRANK KJELL

IPC: H02M5/45 ,  H02M7/515 ,  H02M7/48

CPC classification number: H02M5/45 ,  H02M7/5155

Abstract: An inverter is formed of at least one connection group which is connected to and arranged to be fed from a DC source. Such connection group includes two controlled main rectifiers connected in series with each other between the poles of the DC source, with their connection point forming the output terminal for the output voltage. The rectifiers are ignited alternately. There are also two controlled commutating rectifiers forming in series with each other a part of a connection between the two poles of the DC source and alternately ignited to extinguish the main rectifiers. Between the connection point of the main rectifier and a point in said series connection there is a commutating capacitor. An inductive element is connected with the commutating capacitor to form a series oscillating circuit to recharge the capacitor at each commutation. Limiting rectifiers are connected between each pole of the DC source and the terminal of the commutating capacitor which is connected to the alternating output. The limiting rectifiers have such a polarity that they block for the voltage of the DC source. The inductive element is formed of two reactors each having two windings inductively connected to each other, one of the windings connected in series with a commutating rectifier connected to one pole of the DC source and the other winding in series with a limiting rectifier connected to the other pole of the source.

公开(公告)号：US3703680A

公开(公告)日：1972-11-21

申请号：US3703680D

申请日：1971-02-08

Applicant: ASEA AB

Inventor： FRANK KJELL ,  JOHANSSON LENNART

IPC: G05F1/573 ,  H02J3/18 ,  G05F1/68

CPC classification number: H02J3/1892 ,  G05F1/573 ,  H02J3/1828 ,  Y02E40/30

Abstract: A capacitor bank for alternating current networks has a number of parallel branches each of which is connected by antiparallelconnected thyristors to the network. There is a control device for each thyristor which, when the bank is fully loaded, connects the thyristors in one conducting direction or the other in synchronism with the maximum of the network voltage in such direction. Each branch of the bank can be recharged by the full load during each half-period of the network voltage. Upon the occurrence of reduced load on the bank, the control devices emit current pulses to connect the thyristor switches in one direction or the other of the maxima of the network voltage in such direction for recharging. These latter pulses are emitted at a frequency which is substantially less thaN the network frequency.

Abstract translation: 用于交流网络的电容器组具有多个并联支路，每个支路通过反并联连接的晶闸管连接到网络。 每个晶闸管都有一个控制装置，当该组件满载时，在一个导通方向上或另一个导通方向上，以这种方向与网络电压的最大值同步连接晶闸管。 银行的每个分支可以在网络电压的每个半周期内由满载充电。 在存储器上发生负载减小时，控制装置发射电流脉冲，以将该晶闸管开关沿网络电压的最大值的一个方向或另一个方向连接在这样的方向上用于再充电。 这些后面的脉冲以基本上小于网络频率的频率发射。

公开(公告)号：US3703676A

公开(公告)日：1972-11-21

申请号：US3703676D

申请日：1971-05-07

Applicant: ASEA AB

Inventor： FRANK KJELL

IPC: H02M7/515 ,  H02M7/48

CPC classification number: H02M7/5155

Abstract: An inverter has a connection group arranged to be fed with DC voltage and which includes two controlled main rectifiers in series with each other connected to the DC source and a connection point between which forms the output terminal for the output voltage of the inverter. These rectifiers are fired alternately. Two controlled commutating rectifiers in series are arranged to be supplied with DC voltage and are fired alternately in order to extinguish the main rectifiers. A commutating capacitor and a reactance are connected in series between the connection point of the main rectifiers and a point between the commutating rectifiers. An inductive element is connected with the capacitor to form an oscillating circuit so as to recharge the capacitor at each commutation. A series connection including the commutating rectifiers is supplied with positive and negative DC voltage of higher and lower potential respectively than that of the positive and negative poles of the first DC source. A limiting rectifier having such polarity that it is made reverse blocking by the voltage of the first DC source is connected between each pole of the first DC source and the terminal of the commutating capacitor facing the AC output.

Abstract translation: 逆变器具有被配置为具有直流电压的连接组，并且包括彼此串联连接到直流电源的两个受控主整流器，并且其间形成用于逆变器的输出电压的输出端子的连接点。 这些整流器交替地点火。 串联的两个可控整流整流器被配置为提供直流电压，并交替地点火以便熄灭主整流器。 整流电容器和电抗器串联连接在主整流器的连接点和换向整流器之间的点之间。 电感元件与电容器连接形成振荡电路，以便在每次换向时对电容器进行再充电。 包括整流整流器的串联连接分别具有比第一直流电源的正极和负极的正和负电压高和低的正电压和负电压。 具有这样极性的限流整流器被第一直流电源的电压反向阻塞，连接在第一直流电源的每个极点和面向交流输出端的整流电容器的端子之间。

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。

公开(公告)号：US3555397A

公开(公告)日：1971-01-12

申请号：US3555397D

申请日：1969-04-23

Applicant: ASEA AB

Inventor： FRANK KJELL

IPC: H01J13/48 ,  H02M1/06 ,  H02M7/515 ,  H02M7/525 ,  H02P27/06 ,  H02M7/00 ,  H02M7/52

CPC classification number: H02P27/06 ,  H02M7/5152 ,  H02M7/525

Abstract: IN A THYRISTOR CURRENT CONVERTER HAVING A CONTROL PULSE DEVICE FOR DELIVERING CONTROL PULSES TO THE MAIN THYRISTORS, AND AT LEAST ONE EXTINGUISHING CIRCUIT FOR EXTINGUISHING EACH THYRISTOR AT THE END OF ITS CONDUCTING INTERVAL, AND HAVING AN OSCILLATOR FOR CONTROLLING THE OPERATING RATE OF THE CONTROL PULSE DEVICE AND THE EXTINGUISHING CIRCUIT, THE LOAD CURRENT IS RAPIDLY EXTINGUISHED BY AN ARRANGEMENT WHICH FIRST BLOCKS THE CONTROL PULSES TO THE MAIN

THYRISTORS AND SECOND REGULATES THE CONTROL SIGNAL APPLIED TO THE OSCILLATOR SO THAT THE OSCILLATOR FREQUENCY IS HIGHER DURING THE BLOCKING INTERVAL THAN IMMEDIATELY PRIOR THERETO. THE BLOCKING INTERVAL IS SUFFICIENT TO PERMIT THE EXTINGUISHING CIRCUIT TO EXTINGUISH ALL OF THE THYRISTORS.