SU746859A1

SU746859A1 - Device for controlling the thyristor converter

Info

Publication number: SU746859A1
Application number: SU772528077A
Authority: SU
Inventors: Александр Михайлович Лебедев; Яков Борисович Розман; Евгений Алексеевич Петрыкин
Priority date: 1977-09-13
Filing date: 1977-09-13
Publication date: 1980-07-07

Description

УСТРОЙСТВО дл УПРАВЛЕНИЯ ТИРИСТОРНЫМ DEVICE FOR THIRISTOR MANAGEMENT

(54) ПРЕОБРАЗОВАТЕЛЕМ(54) CONVERTER

Изобретение относитс к области электротехники и может быть использовано дл управлени тиристорами в реверсивных электроприводах посто нного тока.The invention relates to the field of electrical engineering and can be used to control thyristors in reversible DC drives.

Известно устройство дл у1фавлени тиристорными преобразовател ми реверсивного электропривода посто нного тока , содержащее блок сннхронизашга, врем -импульсный преобразователь, логические блоки и формщюватели импульсов , в которых установка начального угла открыти тиристора прои юдитс во врем -импульсном преобразователе с помощью изменени напр жени смеше ни 1.A device for the incorporation of thyristor converters of a reversible DC electric drive, comprising a snc unit, a time-pulse converter, logic blocks and pulse converters, in which the setting of the initial opening angle of the thyristor is detected during the time-pulse converter by changing the voltage of the voltage .

Недостатком этого устройства в- . л етс необходимость дополнительного источника питани , регулирующего органа и процесса настройки дл установки начального угла открыти тиристора.The disadvantage of this device is in-. The need for an additional power source, regulator and adjustment process for setting the initial opening angle of the thyristor is required.

Наиболее близким к изобретению по технической сущности и достигаемомуThe closest to the invention of the technical essence and the achieved

результату вл етс устройство дл управлени тиристорным преобразователем, содержащее блок установки начального угла открыти тирнст фов, источники развертыбак дего и управл ющего напр жений , подключенные ко входу нульоргана , соединенного выходом через первый усилитель импульсов ко входу п вого импульсного трансформатора и через; последовательно включенные инвер10 тор и второй усилитель импульсов ко входу второго импульсного трансформатора| Й | .The result is a device for controlling a thyristor converter, containing a unit for setting the initial opening angle of the tyrns, sources of unwrapped tank and control voltages connected to the input of a null organ, connected by an output through the first pulse amplifier to the input of the fifth pulse transformer and through; Inverter and a second pulse amplifier connected in series to the input of a second pulse transformer | Th | .

Недостатком устройства вл етс сложность схемы и необходимость за15 траты времени на его наладку.The drawback of the device is the complexity of the circuit and the need to spend time on its setup.

Цель изобретени - -упрощение устройства и устранение необходимости наладки .The purpose of the invention is to simplify the device and eliminate the need for adjustment.

Дл этого блок установки начальногч For this, the setup unit is the initial

Claims

The 20 unlocking angles of the T1physors are made in the form of two series-connected I C chains connected between the output of a source of sweep voltage and the input of a zero-body, the berth the parameters of the C-circuit connected to the exit of the source of sweep voltage, and The parameters of the P C-chain connected to the input of the null organ must comply with the condition LGS (and RC) - CX, where oi is the initial opening angle of the thyristors. The drawing shows a block diagram of the device. A device for controlling thyristors of a single phase, the converter contains a source 1 of a control voltage, a block for setting the initial opening angle of the thyristor consisting of resistors 2 and 3 and co-capacitors 4 and 5, reznf 6 of the zero-organ 7, differentiating capacitor 8, amplifier 9 pulses. pulsed transformer U and anbd of thyristor 11. Similarly, the cathode branch contains an inverse amplifier 12, a capacitor 13, a pulse amplifier 1, a pulse transformer 15 c and a thyristor 16. A motor 19 is connected to thyristors 11 and 16 via equalizing reactors 17 and 18. The device works as follows. The signal from the addition of control and unwrapping voltages falls on the input of chickpea, organ 7, alternating voltage by capacitor 8 and after amplification in amplifier 9 and transformed in a pulse transformer, U is fed to an amplifying electrode of the thyristor 11. And logically receives an thyristor 16 but it is shifted relative to the pulse of the thyrist (fa 11 by 180. The parameters of the initial opening angle setting block of the thyristors must meet the following conditions:, l, () o, where is the initial unlocking angle of the FIRESTERS (given by the value). Technical and economic effect The device is achieved by preventing the converter circuit by reducing the number of elements, reducing the setup time of the electric drive system and reducing the cost. I The invention The D7Sh control device of the thyristor converter containing an initial opening angle setting unit for the thyristors, sources of sweep and control voltages connected to zero the output of the first imimage amplifier to the input of the first pulsed transdrmator and through successively . and the second pulse amplifier to the input of the second pulse transformer, characterized by the fact that, for the purpose of simplification, the unit for setting the initial angle of unlocking the circuit is made as two consecutively connected RC, pees, connected between the output of the source, develop a voltage across the input the zero-organ, the parameters R, connected to the output of the sweep voltage source, must comply with the condition 1 С 1, and the parameters T of the G-circuit connected to the input HyjBb-praHa, must meet the condition compulsory () оС. where OS is the starting angle of the thyristors. Information sources, . taken into account during the exportation of a copy 1. Avtorskrv certificate of the USSR No. 474897, cl. H O2 P 13/16, 21.04.72.

2. Report ENIMS Testing of samples of imported equipment and electric motors Part II. Testing of engines and electric drives, M, 1975, p. 54-8O (prototype).