SU924806A1

SU924806A1 - One-cycle stabilized converter

Info

Publication number: SU924806A1
Application number: SU802991563A
Authority: SU
Inventors: Александр Юрьевич Гончаров
Original assignee: Предприятие П/Я А-3325
Priority date: 1980-10-04
Filing date: 1980-10-04
Publication date: 1982-04-30

Description

(54) ОДНОТАКТНЫЙ СТАБИЛИЗИРОВАННЫЙ ПРЕОБРАЗСвАТЕЛЬ(54) SINGLE-STABLE STABILIZED CONVERTER

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Изобретение относитс к электротехнике и может быть использовано в качестве вторичного источника питани .The invention relates to electrical engineering and can be used as a secondary power source.

Известен стабилизированный преобразователь , содержащий задающий генератор , усилитель мощности, выпр мительA stabilized converter is known, which contains a master oscillator, a power amplifier, a rectifier.

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Недостатком стабилизированного преобразовател вл етс его сложность.The disadvantage of a stabilized converter is its complexity.

Наиболее близким к 1чэедлагаемому вл етс однотактный стабилиз|фованный 1феобразователь, содержащий последоват4льно соединенные однотактный задающий генератор с трансформатс ной обратной св зью и трансформат фный усилитель мощности, выходна обмотка трансформатора которого соединена через выпр митель с выхоаными выводами и убавл ющим входом регулируемого резистивного элемента (натфимер, транзистора в режиме регулируемого резистора ), выход к«угорого соединен с раэмагничиваюшей обмоткой задающего гене ратора 2 УThe closest to the 1 st one is a single-ended stabilized single-phase transformer containing sequentially connected single-ended master generator with transformer feedback and a transformer power amplifier whose output winding of the transformer is connected via a rectifier to the output terminals and a decrementing input of the adjustable resistive element transistor in the mode of the adjustable resistor), the output to “coal is connected to the rammagnetizing winding of the master generator 2 U

Недостатком данного Щ)еобразовате- л вл етс недостаточна надежность, поскольку в реальных услови х воздействие колебаний первичной сети или нагрузки приводит к режимам, когда регулируемый реаистивный элемет имеет большую величину выходного сопротивлени . В этом случае размагничивание задающего генератора щюисходит значительно быстрее, чем формирование рабочего импульса, т.е. с выхода задающего генератсфа на вход усилител мощности поступает последовательность |импу ь сов с коэффипиетом зсшолнени близким к единице и знач тельво большим, чем 1федложенный коэф| шаневт заполнени ,The disadvantage of this U) eformer is the lack of reliability, since under real conditions the effect of oscillations of the primary network or load leads to modes where the adjustable rheist element has a large output resistance. In this case, the demagnetization of the master oscillator is now much faster than the formation of a working pulse, i.e. from the output of the master oscillator to the input of the power amplifier, a sequence of impulses arrives with a coefficient of operation close to unity and much larger than the calculated coefficient | shanevt filling,

Claims

| ia which is calculated | gusav usip gel power and its trance ormortor. When traversing the mattress amplifier, the power has time to fully demagnetize and boost saturation, which leads to the appearance of hazardous operating modes of the transistor, power accelerators, electrical power and reduced reliability of the device. S The purpose of the invention is to increase the reliability of the device. The goal is achieved there that the control input of the regulating resistive element is connected to the input winding of the transformer of the power amplifier. The drawing shows the electric. ka scheme transformer. The converter contains serially connected single-clock master oscillator I e by traction feedback and transformer usi-. Power 2, the output winding of which is connected h) without rectifier 3 (which can be equipped with a filter) with a load 4. Regulated resistive element 5 is connected with a single input with a load, and output with a variable winding 6 of the driver. The input of the adjustable resistive element 5 is also connected to the auxiliary winding 7 of the power amplifier transformer. The Converter operates as follows. In the steady-state mode, the output voltage is stabilized at the load by adjusting the pause duration of the output pulses of the master oscillator by changing the internal resistance of the resistive element 5, the control input of which is associated with the load, i.e. There is a negative feedback about nff (and, if necessary, over current). During demagnetization of the transformer of the power amplifier at the additional winding 7, a voltage is generated such that the adjustable resistive element has a small output capacitance. This leads to the fact that the master oscillator cannot complete the formation of a pause between pulses until the transformer of the power amplifier is demagnetized. Thus, due to the additional winding 7 installed in the gated device of communication, the control input of the resistive element 5 eliminates dangerous operating modes of the power amplifier, which makes it possible in real conditions to increase the reliability of the device and, due to the exclusion of power amplifier transformer saturation, to reduce power loss. Claims of the invention: A single-ended stabilized converter comprising a series-connected one-cycle master oscillator with transformer feedback and a transformer power amplifier, the output winding of which is connected through a rectifier with output terminals and a control input of an adjustable re-active Alemekg, the output connected to a demagnetizing winding connector. , characterized in that, in order to increase reliability, the control input of the controlled reaistive element is connected to the additional winding of the transformer power amplifier. Sources of information that are taken into account prk examination 1. Authors certificate of the USSR № 69203О, cl. H 02 M 3/335, 1977.

2. Electronic technology in automation. Sat under. Red, Yu. I. Konev. Issue 11, M., Soviet Radio, 1980, p. 27, fig. 2