SU903844A1

SU903844A1 - Ac voltage stabilizer

Info

Publication number: SU903844A1
Application number: SU802925837A
Authority: SU
Inventors: Борис Алексеевич Болдов; Александр Кузьмич Карельцев; Геннадий Пантелеймонович Задерей
Original assignee: Московский Ордена Ленина Энергетический Институт
Priority date: 1980-04-17
Filing date: 1980-04-17
Publication date: 1982-02-07

Description

(54) СТАБИЛИЗАТОР ПЕРЕМЕННОГО НАПРЯЖЕНИЯ(54) AC VOLTAGE STABILIZER

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Изобретение относитс к электротехнике и может быть использовано в цеп х питани различной электро- и радиоаппаратуры.The invention relates to electrical engineering and can be used in the power supply circuits of various electrical and radio equipment.

Известно устройство стабилизации переменного напр жени , содержащее трансформатор с ортогональным расположением первичной и вторичной обмоток сердечника, причем первична обмотка подключена к источнику нестабилизированного входного напр жени , а вторична обмотка зашунтирована конденсатором 11.A device for stabilizing an alternating voltage is known, which contains a transformer with an orthogonal arrangement of the primary and secondary windings of the core, the primary winding being connected to a source of unstabilized input voltage, and the secondary winding being shunted by a capacitor 11.

Недостатком указанного устройства вл етс узкий диапазон стабилизации по входному напр жению, обусловленный недостаточно широкой областью возбуждени параметрических колебаний в выходном резонансном контуре.The disadvantage of this device is the narrow stabilization range of the input voltage due to the insufficiently wide excitation region of the parametric oscillations in the output resonant circuit.

Известен стабилизатор переменного напр жени , который содержит трансформатор , имеющий первичную и две встречно включенные вторичные обмотки, первична обмотка соединена с входными клеммами, а вторична последовательно соединена с конденсатором и первым отводом первичной обмотки 2.An alternating voltage regulator is known, which contains a transformer having a primary and two secondary windings on opposite sides, the primary winding is connected to the input terminals, and the secondary winding is connected in series with the capacitor and the first tap of the primary winding 2.

Недостатком указанного устройства вл етс узкий диапазон стабилизации поThe disadvantage of this device is a narrow range of stabilization

входному напр жению и малый коэффициент стабилизации, обусловленный нестабильностью амплитудной характеристики устройства при изменении входного напр жени , а также сопротивлени нагрузки.input voltage and low stabilization factor due to instability of the amplitude characteristics of the device when the input voltage changes, as well as the load resistance.

Целью изобретени вл етс расширение диапазона стабилизации и увеличение коэффициента стабилизации в широком диапазоне изменени входного напр жени и сопротивлени нагрузки.The aim of the invention is to expand the stabilization range and increase the stabilization factor in a wide range of input voltage and load resistance.

Поставленна цель достигаетс тем, что The goal is achieved by the fact that

10 стабилизатор переменного напр жени содержит трансформатор, имеющий первичную и две встречно включенные вторичные обмотки , первична обмотка соединена с входными клеммами, вторична обмотка последовательно соединена с конденсатором и частью первичной обмотки, причем зажим дл подключени нагрузки соединен с отводом одной из вторичных оботок, а другой зажим - с отводом первичной обмотки.10, the AC voltage regulator contains a transformer having a primary and two oppositely connected secondary windings, the primary winding is connected to the input terminals, the secondary winding is connected in series with the capacitor and part of the primary winding, and a terminal for connecting the load is connected to the outlet of one of the secondary windings, and the other clamp - with the tap of the primary winding.

Claims

With such a connection, the load extends the stabilization range and the stabilization factor increases, since an optimal combination of forced and parametric oscillations occurs in the device. The drawing shows a schematic of a voltage regulator. An alternating voltage regulator circuit includes a generator of unstabilized alternating input voltage, a transformer consisting of a ferromagnetic core 2, a primary winding including windings 3, 4 and 5, output windings 6, 7 and 8 consisting of a capacitor 9 and the load resistance 10. The stability of the output voltage is determined by the ratio of the number of turns of the series-connected parts of the primary 4 and 5 and secondary b, 7 and 8 windings. When connecting the load resistance 10 parallel to the tank 9, this ratio is unchanged, since the number of turns of the secondary 6, 7 and 8 and part of the primary 4 and 5 windings is chosen from the condition of the necessary attenuation coefficient and energy that is stored in the oscillatory circuit. By connecting one clamp from the load resistor 10 to the secondary winding tap 6, 7 and 8, and the other clamp to the second tap of the primary winding 3, 4 and 5, an asymmetrical mode of operation of the device appears and it is possible to change the ratio of the number of turns of the windings 4, 7 and 8. As the input voltage increases, the voltage on the winding 4 increases, and on the windings 7 and 8, due to parametric generation, it drops. With an appropriate choice of the number of turns of the windings 4, 7 and 8, the stability of the proposed device is ensured, the stabilization range widens and the stabilization factor increases with changing input voltage and load resistance 10 within wide limits. In order to obtain the same stabilization factor when connecting the load resistance 10 parallel to the tank 9, it is necessary to increase the weight and dimensional parameters of the transformer. The use of the proposed AC voltage stabilizer provides, in comparison with the known stabilization devices, a significant extension of the stabilization range with respect to the input voltage; two-way filtering, i.e., the weakening of the transmission of spurious signals from the input to the output circuit and back; the ability to automatically turn off the entire device during a short circuit load; possibility of latching loads from short-term overvoltages in the input circuit; radiation resistance of the device. The proposed device with respect to the known one allows to increase the stabilization factor by almost 10 times and significantly expand the stabilization range when the input voltage and load resistance change. Claims An alternating voltage stabilizer comprising a transformer having a primary winding and two windings connected in opposite directions, the primary winding is connected to the input terminals, and the secondary winding is connected in series with a capacitor and a part of the primary winding, in order to increase the stabilization factor of the device when the input voltage changes voltage, one terminal for connecting the load is connected to the tap of one of the secondary windings, and the other clamp to the tap of the primary winding. Sources of information taken into account in the examination 1. US Patent No. 3654546, cl. G 05 F 1/32, 1968.

2. US Patent No. 3683269, cl. G 05 F 3/06, 1972.

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