SU954994A1

SU954994A1 - Ac voltage source

Info

Publication number: SU954994A1
Application number: SU802880956A
Authority: SU
Inventors: Виктор Александрович Курчидис; Станислав Петрович Парников; Виктор Александрович Сысоев; Александр Иванович Уваев; Владимир Николаевич Федоров
Original assignee: Рязанский Радиотехнический Институт
Priority date: 1980-02-07
Filing date: 1980-02-07
Publication date: 1982-08-30

Description

Изобретение относитс к электротехнике и автоматике и может быть использовано, например, при разработке вторичных источников электропитани .The invention relates to electrical engineering and automation and can be used, for example, in the development of secondary power supplies.

Известен стабилизатор переменного напр жени , содержащий регулирующий орган, представл ющий собой трансформатор (автотрансформатор) с подмагничиваемым шунтом, на котором расположена обмотка управлени , блок управлени , подключенный своими входами к выходным зажимам устройства, причем выход блока управлени соединен с выводами обмотки управлени П.A variable voltage regulator is known that contains a regulator, which is a transformer (autotransformer) with a magnetic shunt on which the control winding is located, a control unit connected by its inputs to the output terminals of the device, and the output of the control unit P.

Недостатком известного стабилизатора вл ютс большие масса и габариты устройства, что вызвано избыточным расходом активных материалов (меди и стали) в регулирующем органе .A disadvantage of the known stabilizer is the large mass and dimensions of the device, which is caused by the excessive consumption of active materials (copper and steel) in the regulator.

Наиболее близким техническим решением к изобретению вл етс стабилизатор , содержащий регулирующий орган, выполненный на трансформаторе с первичной, вторичной обмотками и обмоткой управлени , первична обмотка одним выводом подключена к одной клемме дл подключени источника питани , вторична обмотка соединена с клеммами дл подключени наг рузки, а обмотка управлени подключена к ключевому элементу, управл ю10 щий вывод которого соединен с выходом блока управлени 23.The closest technical solution to the invention is a stabilizer containing a regulator made on a transformer with a primary, secondary winding and a control winding, the primary winding is connected to the same terminal with a single terminal for connecting the power source, the secondary winding is connected to the terminals for connecting the load, and The control winding is connected to the key element, the control output of which is connected to the output of the control unit 23.

Недостатками этого устройства вл ютс повышенные нелинейные искажеS ни выходного напр жени и массогабаритные показатели.The disadvantages of this device are the increased non-linear distortions of either the output voltage and the weight and dimensions.

Цель изобретени - уменьшение нелинейных искажений и массогабаритных показателей.The purpose of the invention is to reduce nonlinear distortion and mass and dimensional parameters.

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Claims

The goal is achieved by the fact that in a variable voltage stabilizer a transformer is made on a three-rod magnetic core OflHOM. 39 on the first rod of which the primary winding is located, the other output of which is connected to another terminal for connecting the power source, on the second terminal - the secondary winding connected to the input of the control unit, and on the third rod - control winding. The drawing shows the scheme of stable mash .. The regulator of the device is designed as a transformer (autotransformer) 1 with a three-core magnetic circuit

2. The primary winding 3 of the transformer is connected to the terminals for connecting the power supply, and the secondary winding is connected to the output terminals, on the third rod of the magnetic core, which is a magnetic shunt, is located the control winding 5, the terminals of which are connected via controlled key element 6. The control input of the key element 6 is connected to the output of the control unit 7. The inputs of the control unit are connected to the output terminals of the device. The device works as follows. An alternating voltage is applied to the input terminals of the device, as a result of which the primary winding creates a mrs. and in the core of the transformer a magnetizing flux F - is conducted. When the key element is open, part of the magnetizing flux Fd is closed through the transformer core, and part F is closed through the magnetic shunt, and Fd Fr + F. Thus, in the secondary winding connected to the load Kie, an emf is induced, which can be calculated on the following formula known from electromagnetic technology: Е 4 Крш fФ ;, where Kg is the voltage form factor (for a sinusoidal voltage Kg 1.11); ui- the number of turns of the secondary winding; f is the frequency of the input voltage. The operation of the device is based on the continuous switching of the magnetizing flux Fr carried out by means of the control winding. When the control key element is closed, the control steering system is short-circuited. as a result, the circuit of the magnetic shunt is broken in the flow and Fd-F, i.e. the flux that closes through the core of the transformer increases, and the voltage across the load increases according to the above formula. The control of the moment of closing and opening of the key element is carried out using the control unit. This unit generates control signals depending on the deviations of the output voltage from a predetermined value so as to compensate for these deviations. In this device, the regulation (stabilization) of the voltage is carried out by controlling the elements that are in the circuits that are not connected to the electrical circuit of the current network or the load. The noted feature is a positive feature of the device of the class under consideration. At the same time, this design of the device allows reducing the weight and dimensions of the known devices by reducing the consumption of active materials (copper and steel), since the device does not require the use of a whole additional core designed for a 20% change in the main flow, but only Part of such a core is a magnetic shunt with respect to the main core. In this case, the weight-magnetic shunt is less than the weight of the additional core by more than 1/4, i.e. approximately 12-15% by weight of a conventional single phase transformer. Thus, the total weight of the proposed device is 112-115% compared with a conventional single phase transformer against 120 in the known device. Claims An alternating voltage stabilizer containing a regulator made on a transformer with primary, secondary windings and a control winding, the primary winding is connected to the same terminal for the power supply, the secondary winding is connected to the terminals for connecting the load, and the control winding is connected to a key element whose control output is connected to the output of the control unit, distinguished by the fact that, in order to reduce non-linear distortions and weight and size dimensions In this case, the transformer is made on one three-core magnetic core, on the first rod of which the primary winding is placed, the other output of which is connected to another terminal for connecting the power source, on the second Core - the secondary winding connected to the input of the control unit, and on the third rod control winding . g “Sources of information taken into account during the examination 1.Troitsky V.A., Belyy N.G. Systems of smoothly adjustable transformers for the replacement of regulators with a short-circuited winding .- Abstracts of reports All-Union. scientific -techn. conf. Modern tasks of converting equipment, Part 5, Kyiv, 1975. 2, USSR Author's Certificate No., cl. G 05 F 3/06,