SU1686661A1

SU1686661A1 - Device for controlling three-phase rectifier

Info

Publication number: SU1686661A1
Application number: SU894638193A
Authority: SU
Inventors: Леонид Николаевич Дрожжин; Виктор Иванович Пупляев
Original assignee: Предприятие П/Я А-1772
Priority date: 1989-01-13
Filing date: 1989-01-13
Publication date: 1991-10-23

Abstract

Устройство управлени трехфазным выпр мителем относитс к электротехнике и предназначено дл построени систем управлени усилителем мощности при регулировании скоростью электродвигател в электроприводе посто нного тока. Цель изобретени - уменьшение в устройстве настраиваемых элементов и увеличение его надежности. Устройство содержит генератор опорного пилообразного напр жени 2, нуль-орган 4, три формировател импульсов 5-7, блок уставок 14, шесть управл емых ключей 8-13 it сумматор 3. Новым в устройстве вл етс введение сумматора, шести управл емых ключей, одного блока уставок. Это позвол ет в три раза сократить количество настраиваемых элементов - генераторов опорного напр жени и нуль-органа. Зил.The three-phase rectifier control unit is electrical engineering and is designed to build power amplifier control systems while controlling the speed of the electric motor in a direct current drive. The purpose of the invention is to reduce in the device custom elements and increase its reliability. The device contains a reference sawtooth voltage generator 2, a zero-organ 4, three pulse drivers 5-7, a setting block 14, six controlled keys 8-13 it adder 3. A new device is the introduction of an adder, six controlled keys, one block settings. This allows a threefold reduction in the number of tunable elements — the reference voltage generator and the zero-organ generator. Zil.

Description

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Claims

Claim

A device for controlling a three-phase rectifier, comprising a transformer for connecting to a voltage in phase with one of the phases of the power voltage of a three-phase rectifier, a control voltage source and three pulse shapers whose outputs are outputs of a control device, characterized in that, in order to increase operational capabilities device, a sawtooth voltage generator, a zero-organ, an adder, a setting block and six controlled keys are introduced into it, and the transformer output and through serially connected the first input of the sawtooth voltage generator and the first input of the adder is connected to the first input of the zero organ, the second input of which is connected to the control voltage source, and the output is connected to the inputs of three pulse shapers, while the output of the first shaper is connected to the first control inputs of the first and third keys, the output of the second pulse shaper - with the first control inputs of the first and second keys and the second control input of the fourth key, and the output of the third the pulse ripper is connected to the second control inputs of the sawtooth generator, the second and third keys and the first input of the fourth key, the outputs of the third and fourth keys are connected to the first control inputs of the fifth and sixth keys, respectively, the second inputs of which are connected respectively to the second and third outputs of the setpoint block, the first output of which is combined with the outputs of the fifth and sixth keys and is connected to the second control input of the adder, and the outputs of the first and second keys are connected to the second control the transmitting inputs of the second and third pulse shapers.

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