SU1243126A1

SU1243126A1 - Versions of switching device

Info

Publication number: SU1243126A1
Application number: SU843779016A
Authority: SU
Inventors: Николай Ильич Джус; Валентин Викторович Красник
Original assignee: Dzhus Nikolaj; Krasnik Valentin V
Priority date: 1984-08-13
Filing date: 1984-08-13
Publication date: 1986-07-07

Abstract

Изобретение относитс к импульсной технике. Может быть использовано дл бесконтактной коммутации трехфазной нагрузки электрической сети. Цель изобретени - упрощение устройJ i I ства, Достигаетс цель пут.м умень-. шени числа конденсаторов в силовых :цеп х. Коммутатор содержит фазы 1, 2 и 3 сети, конденсатор 4 в фазе 2 сети, который может вл тьс нагрузкой этой фазы, нагрузки 5 и 6 в фазах I и 3, диоды 7 и 8, тиристоры 9 и 10, блок 11 управлени . При подаче управл ющего сигнала с блока 11 включаютс тиристоры 9 и 10, что обеспечивает протекание тока через конденсатор 4 и подключение к сети трехфазной нагрузки. В описании изобретени приводитс второй вариант коммутатора, выполненного на одном тиристоре и четырех диодах. 2 с.п. ф-лы, 2 шт. (Л г J to 1 СО tc ОдThe invention relates to a pulse technique. It can be used for contactless switching of three-phase electrical network load. The purpose of the invention is to simplify the device. The goal is achieved. The number of capacitors in the power circuits: The switchboard contains phases 1, 2 and 3 of the network, capacitor 4 in phase 2 of the network, which can be the load of this phase, loads 5 and 6 in phases I and 3, diodes 7 and 8, thyristors 9 and 10, control block 11. When the control signal is supplied from block 11, thyristors 9 and 10 are turned on, which ensures the flow of current through the capacitor 4 and the connection to the network of a three-phase load. In the description of the invention, a second variant of the switch, made on one thyristor and four diodes, is presented. 2 sec. f-ly, 2 pcs. (L g J to 1 CO tc od

Description

Изобретение относитс к области импульсной техники- и может быть использовано дл бесконтактной коммутации трехфазной нагрузки.The invention relates to the field of pulsed technology and can be used for contactless switching of a three-phase load.

Целью изобретени вл етс упро- щение устройства путем уменьшени числа конденсаторов в силовых цеп хThe aim of the invention is to simplify the device by reducing the number of capacitors in the power circuits.

На фиг. 1 представлена принципиальна электрическа схема устройства первый вариант; на фиг.2 - то же,второй вариант.FIG. 1 shows a circuit diagram of the device of the first embodiment; figure 2 - the same, the second option.

Коммутатор (фиг. 1) содержит фазы 1-3 сбти, конденсатор 4 в фазе 2 сети, который может вл тьс ее нагрузкой. В фазы 1 и 3 сети вклю- чены нагрузки 5 и 6, выводы которых соединены с выводами первого и второго диодов 7 и 8 соответственно, другие одноименные выводы которых соединены с выводом конденсатора 4. Встречно параллельно диодам 7 и 8 включены первый и второй тиристоры 9 и 10, входы которых подключены к выходам блока 11 управлени .The switch (Fig. 1) contains phases 1–3 and the capacitor 4 in phase 2 of the network, which may be its load. Phases 1 and 3 of the network include loads 5 and 6, the terminals of which are connected to the terminals of the first and second diodes 7 and 8, respectively, and the other terminals of the same name are connected to the output of capacitor 4. The first and second thyristors 9 are connected parallel to the diodes 7 and 8 and 10, the inputs of which are connected to the outputs of the control unit 11.

Коммутатор (фиг. 2) содержит лиш один тиристор 9, но дополнен третьим и четвертым диодами 12 и 13, причем тиристор 9 включен сог ласно с диода.ми между точкой соединени одноименных электродов диодов 7 и 8 и точкой соединени одноименных элетродов диодов 12 и 13. Диоды 7 и 12 соединены с выводами нагрузки 5 разноименными электродами, а диоды 8 и 13 соединены с выводами нагрузки 6 разноименш11ми электродами.The switch (Fig. 2) contains only one thyristor 9, but is supplemented with the third and fourth diodes 12 and 13, and the thyristor 9 is connected according to the diode between the connection point of the same electrodes of diodes 7 and 8 and the connection point of the same electrodes of diodes 12 and 13 Diodes 7 and 12 are connected to load pins with 5 opposite electrodes, and diodes 8 and 13 are connected to load pins with 6 different electrodes.

Коммутатор работает следующим образом.The switch works as follows.

При отсутствии сигнала на выходе блока 11 конденсатор 4 зар жаетс до амплитуды линейного напр жени сети и ток через диоды 7 и 8 в схе на фиг.1 или через диоды 7, 8, 12 и 13 в схеме на фиг. 2 не протекает Трехфазна нагрузка отключена от сеIn the absence of a signal at the output of unit 11, the capacitor 4 is charged to the amplitude of the line voltage and current through diodes 7 and 8 in the circuit in Fig. 1 or through diodes 7, 8, 12 and 13 in the circuit in Fig. 2 not leaking Three-phase load disconnected from the se

При подаче управл ющего сигнала с выхода блока 11 включаютс тиристоры 9 и 10 (фиг. 1) или тиристор 9 (фиг. 2), что обеспечивает протекание тока через конденсатор 4 в другом направлении. В результате трехфазна нагрузка подключаетс к сети.When a control signal is supplied from the output of block 11, the thyristors 9 and 10 (Fig. 1) or the thyristor 9 (Fig. 2) are turned on, which allows current to flow through the capacitor 4 in the other direction. As a result, the three-phase load is connected to the network.

Claims

1. A switch containing a three-phase load connected to the first terminals of the mains, a capacitor in one of the network phases, a first diode connected between the second terminals of the first and second phases, a second diode connected between the second terminals of the second and third phases, the first thyristor The input of which is connected to the output of the control unit, characterized in that, in order to simplify the switch,

A second thyristor is inserted into it, the first and second diodes are connected to the second output of the second phase with the same electrodes, and the first and second thyristors are connected counter-parallel to the first and second diodes, respectively.

2. A switch containing a three-phase load connected by the first terminals to the mains, a capacitor in one of the network phases, the first diode connected between the second terminals of the first and second phases, the second diode connected between the second terminals of the second and third phases The first thyristor, the input of which is connected to the output of the control unit, is characterized in that 5, in order to simplify the switch, the third and fourth diodes are inserted in it, the first and second | DIODi being connected to the second output terminal of the second phase with the same name first and third diodes with the second output of the first phase with different names and electrodes, the second and fourth diodes with the second output of the third phase with different electrodes, and the first thyristor is connected between the connection point of the same electrodes of the first

and the second diode and the connection point of the same electrodes of the third and fourth diodes in accordance with the diodes.

Editor L, Gratilllo

Compiled by Shchedrin Tehred I. Veres

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VNIIPI USSR State Committee

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