SU930526A1

SU930526A1 - Stabilized dc voltage converter

Info

Publication number: SU930526A1
Application number: SU792750505A
Authority: SU
Inventors: Валерий Викентьевич Авдеев; Алексей Петрович Пакидов; Виктор Иванович Тихонов
Original assignee: Ленинградский Институт Авиационного Приборостроения
Priority date: 1979-04-06
Filing date: 1979-04-06
Publication date: 1982-05-23

Description

(54) СТАБИЛИЗИРОВАННЫЙ ПРЕОБРАЗОВАТЕЛЬ ПОСТОЯННОГО НАПРЯЖЕНИЯ(54) STABILIZED CONSTANT VOLTAGE CONVERTER

II

Изоб|эетение относитс к электротехнике и может быть использовано -в системах-электропитани дл преобразовани и стабилизации посто нного напр жени .The image is related to electrical engineering and can be used in power-supply systems to convert and stabilize a constant voltage.

Известны стабилизированные преобразователи посто нного напр жени , содержащие несколько инверторнбгх чеек, выходы которых соединены последовательно и через общий выпр митель соединены с нагрузкой 1 . Известен также преобразователь , в котором дл автоматической стабилизации выходного напр жени чейки выполн ютс синхронизированными друг с другом, причем одна из чеек управл етс от щиротно-импульсного модул тора , а другие выполнены нерегулируемыми , но снабжены коммутаторами, отключающими чейку по сигналу, выдаваемому сумма тором, на вход крторого поданы выходные напр жени каждой чейки 2 j .Stabilized DC / DC converters are known, containing several inverter cells, the outputs of which are connected in series and connected to the load 1 via a common rectifier. A converter is also known in which, for the automatic stabilization of the output voltage, the cells are synchronized with each other, with one of the cells being controlled from the pulsating-modulator modulator, while the others are made unregulated, but equipped with switches that disconnect the cell by the signal produced by the sum of the torus , the output voltage of each cell is supplied to the input cell 2 j.

Недостаток известного преобразовател состоит в излишней сложности приThe disadvantage of the known Converter is too complicated when

ограниченном количестве чеек, например двух.limited number of cells, for example two.

Цель изобретени - упрощение устройства .The purpose of the invention is to simplify the device.

Поставленна цель достигаетс тем, что в преобразователе управление коммутатором нерегулируемой инверторной чейки осуществл етс от входного напр жени , дл чего управл ющий вход коммутатора соединен с входными выводами через пороговый элемент.The goal is achieved by controlling the switch of the unregulated inverter cell in the converter from the input voltage, for which the control input of the switch is connected to the input terminals via a threshold element.

На чертеже представлен предлагаемый преобразователь.The drawing shows the proposed Converter.

Преобразователь содержит щиротнорегулируемый инвертор 1 с вьгходным трансформатором 2. Инвертор управл етс от ведущего и ведомого генераторов 3 и 4, выходные напр жени которых взаимно сдвигаютс по фазе в функции сигнала измерительного органа 5,подкшоченного к нагрузке преобразовател 6.The converter contains a discretely regulated inverter 1 with an out-of-line transformer 2. The inverter is controlled from the master and slave generators 3 and 4, the output voltages of which are mutually shifted in phase as a function of the signal from the measuring unit 5 connected to the load of the converter 6.

Claims

The converter also contains an unregulated inverter 7 with an output transformer 8 and a switch 9. 39 The secondary windings of transformers 2 and 8 are connected according to sequence but also through a common filter 10 to filter 11 connected to the load 6. The switch 9 is configured in diodes 12 and the transistor 13 and is connected in parallel to the primary winding of the transformer 8. The input of transistor 13 is connected via the threshold element 14 to the input terminals. converter, for which the voltage source is fed. Transformer 8 has windings 15 and 16 of a positive feedback, according to which, synchronization windings 17 and 18 are located on the transformer of generator 3. The converter works as follows. At elevated levels of the output voltage Oj, the controlled switch 9 is in a state in which the transformer 8 is disconnected by shorting its Primary winding. The remaining part of the circuit 1, which includes an inverter with pulse-width modulation 1 with an output transformer 2, the secondary winding of which is connected via rectifier 10 and filter 11 with load 6, driving 3 and slave 4 generators, the outputs of which are connected to to the control input of the pulse-width modulated inverter, the measuring unit 5 stabilizes the output: voltage, forming a width-zero modulated signal on the secondary side of the output transformer 2 depending on the width from the error signal at the output of block 5. When the input voltage drops to the level determined by the threshold element TOMi 14, the transistor 13 locks, which opens the primary winding of the transformer 8 and connects it to the output of the unregulated Inverter 7. Output synchronization Inverter with a pulse-width modulation and an unregulated inverter is powered by the base windings 15 and 16, connected in series with the windings 17 and 18 of synchronization. Due to this, the range of operation of the regulated inverter decreases in number approximately equal to the number of inverter cells, which allows reducing the weight and dimensions of the filter 11 and increasing the speed of the output voltage stabilization system. Unlike the known control circuit of the proposed inverter, it is simpler to perform: instead of a multi-input adder with accumulative memory elements, a common threshold element is used. Claims of the Invention A stabilized DC / DC converter containing a series of inverter cells synchronized with each other with output transformers, the secondary windings of which are connected in series and through a common rectifier and filter connected to the output terminals of the converter, and one cell is adjustable by means of pulse modulator, and the other cells are made unregulated and equipped with a disconnect switch, which means that, in order to simplify, nb controlling said switch is connected to the input terminals of the transducer entered via a threshold element. Sources of information taken into account during the examination 1. USSR author's certificate No. 509974, cl. -H 02 R 13/18, 1973.

2. Certificate of CCCF on application No. 2729327 / 24-07, 26.02.79.