SU930300A1

SU930300A1 - Switch dc voltage stabilizer

Info

Publication number: SU930300A1
Application number: SU802949339A
Authority: SU
Inventors: Хафис Ибрагимович Муллин; Владимир Самойлович Моин
Original assignee: Предприятие П/Я М-5374
Priority date: 1980-07-04
Filing date: 1980-07-04
Publication date: 1982-05-23

Description

(5) КЛЮЧЕВОЙ СТАБИЛИЗАТОР ПОСТОЯННОГО НАПРЯЖЕНИЯ(5) KEY CONSTANT VOLTAGE STABILIZER

I Изобретение относитс к электротехнике и может быть использовано при построении стабилизированных источников питани .I The invention relates to electrical engineering and can be used in the construction of stabilized power sources.

Известен ключевой стабилизатор посто нного напр жени , преобразующий нестабильное посто нное напр жение в два стабилизирЬванних выходныхнапр жени , которые 1иогут питать две нагрузки, имеющие общий вывод, и напр жение на которых относительно общего вывода имеет разную пол рность. Этот стабилизатор содержит последовательно включенные дроссель со вторичной обмоткой, к которой подключено выпр мительное устройство,питающее одну нагрузку, транзисторный ключ, параллельно которому включено второе выпр мительное устройство, питающее вторую нагрузку и устройство управлени транзисторным ключем СО.A key constant voltage stabilizer is known that converts an unstable constant voltage into two stabilized output voltages that can supply two loads having a common terminal, and the voltage on which relative to the common lead has a different polarity. This stabilizer contains a series-connected choke with a secondary winding, to which a rectifier device, supplying one load, a transistor switch, in parallel with which a second rectifying device, supplying the second load, and a control device CO, are connected.

Недостатком данного технического решени вл етс наличие вторичнойThe disadvantage of this technical solution is the presence of secondary

обмотки дроссел , что увеличивает его габариты и трудоемкость изготовлени .Drossel windings, which increases its dimensions and the complexity of manufacturing.

Наиболее близким техническим решением к предлагаемому вл етс ключевой стабилизатор посто нного напр жени с двум выходами, имеющими разную пол рность относительно точки, объедин ющей первые выводы обеих выходов и первый входной вывод, содержащий основной ключ, дроссель, включенный через основной клич между вторым входньм выводом и вторым выводом первого выхода стабилизатора, конденсаторы шунтируюцие каждый из входовстабилизатора, основной диод св зывающий точку соединени основного ключа и дросселе со вторым выводом второго выхода стабилизатора и основной блок управлени , вход которого срединен с первым выходом стабилизатора , а выход соединен с цепыэ управлени основного ключа 2j.The closest technical solution to the proposed is a key voltage regulator with two outputs having different polarity about the point combining the first terminals of both outputs and the first input terminal containing the main key, the choke connected through the main call between the second input terminal and the second output of the first output of the stabilizer, the capacitors for shunting each of the inputs of the stabilizer, the main diode connecting the connection point of the main switch and the choke with the second output of the second output of the stabilizer and the main control unit, the input of which is central to the first output of the stabilizer, and the output connected to the control circuit of the main key 2j.

Claims

However, the known stabilizer cannot stabilize the voltages on both loads, since the load on the discharge current, which is the common current for them, flows through the successively switched on loads with a closed key. Therefore, any change in the resistance value of the first load, the voltage of which is stabilized, leads to a change in voltage at the second load. The aim of the invention is to improve the accuracy of stabilization of output voltages when changing loads in a wide range. The goal is achieved by the fact that the stabilizer contains the main key, a choke connected via a primary key between the second input pins and the second output of the first stabilizer output, capacitors shunting each of the stabilizer outputs, the main diode connecting the junction of the main key and the throttle connectors the second output of the second output of the stabilizer, and the main control unit, the output of which is connected to control the main key, introduced an additional key, an additional diode and an additional control unit An additional diode is connected via an additional key between the point of connection of the main switch to the choke and the first input terminal, the input of the additional control unit is connected to the second output, and the output of the additional control unit-: lean is connected to the control circuit of the additional key. The drawing shows the electric circuit of the key stabilizer. . The key stabilizer contains the main and additional thyristor switches 1 and 2, the choke 3 of the main and additional control units and the capacitors of filters 6 and 7, the main and additional diodes 8 and 9. The stabilizer operates as follows. The control unit k measures the first output voltage — ensures switching of the key 1 with such a duty cycle so as to maintain the voltage at the first output stable operation as a normal compensating stabilizer. At the same time, during the closed state of the key 1, the current of the throttle pass. It is transmitted through successively disconnected loads of two diodes and a diode. 8. Voltage tabilization on the second one. The output is provided by means of a control unit 5 which measures the output on the second output and ensures the switching of the switch 2 with such a degree as to maintain the voltage on the second output stable. With key 2 open, the throttle current passes through the second output, and the load connected to this output is fed this time by the discharge current of the capacitor 7 The load resistance value at the second output should be greater than at the first output. The control units k and 5 can be performed according to any of the known schemes. implementing any principle of control of the switches (PWM, relay, etc.). and providing stable output. The advantages of the described stabilizer include the possibility of obtaining high stability of the output voltages with a wide and independent change in the magnitude of the loads, simplicity of the circuit design, the presence of a single winding element with one winding without taps, which allows microminiaturization of the stabilizer. DETAILED DESCRIPTION OF THE INVENTION A key DC voltage regulator with two outputs having different polarities about a point combining the first terminals of both outputs and the first input terminal containing the primary key, a choke connected through the primary key between the second input terminal and the second terminal of the first stabilizer output. , capacitors, shunting each of the stabilizer outputs, the main diode, connecting the connection point of the main switch and the throttle to the second output of the second stabilizer output, and the main control unit The input is connected to the first output, and the output is connected to the control circuit of the main switch, characterized in that, in order to improve the accuracy of stabilizing the output voltages when the loads and the supply voltage vary over a wide range, an additional switch, an additional diode and additional control unit.

moreover, the additional diode is connected via an additional key between the connection point of the main key and the choke and the first input terminal, the input of the additional control unit is connected to the second output cm, and the output of the additional control unit is connected to the control circuit of the additional keys.

Sources of information taken into account in the examination

one; Moin V.S. Laptev N. N. Stabilized transistor converters. M., Energy 1972, p. 195, fig. 6-11 b.

2. French Patent ff, U1. H 02ni 7 / III, 1966.