SU1279032A1

SU1279032A1 - High-voltage rectifier

Info

Publication number: SU1279032A1
Application number: SU843727635A
Authority: SU
Inventors: Виталий Александрович Майзлер; Владимир Петрович Старицын
Original assignee: Ленинградское научно-производственное объединение "Буревестник"
Priority date: 1984-04-18
Filing date: 1984-04-18
Publication date: 1986-12-23

Abstract

Изобретение относитс к электротехнике и может быть исполь.:овано в качестве источника питани дл рентгеновской и электрофизической аппаратуры . Цель изобретени - улучше-. ние массогабаритных показателей. Устройство содержит трансформатор с - первичной обмоткой 1 и вторичными обмотками 2 - 5, а также выпр мители 6, 7, выполненные по мостовой схеме на вентил х 8 - 15. Обмотки 3, 4 JJOSK TJ fenEaThe invention relates to electrical engineering and can be used: as a power source for X-ray and electrophysical equipment. The purpose of the invention is improved. weight and size indicators. The device contains a transformer with - primary winding 1 and secondary windings 2 - 5, as well as rectifiers 6, 7, made by a bridge circuit on valves 8 - 15. Winding 3, 4 JJOSK TJ fenEa

Description

подключены к выпр мител м 6,7 соединенным последовательно, к объединенным анодам вентилей выпр мител .6 подключены объединенные катоды дополнительных вентилей 16, 17, анодами соединенных с обмоткой 2. К Объединенным катодам вентилей выпр мител 7 подключены объединенные аноды дополнительных вентилей 18, 19, катодами подключенных к обмотке 5, Фильтрующие емкости 20 - 22 включены междуconnected to the rectifier 6,7 connected in series, to the combined anodes of the rectifier valves. 6 connected the combined cathodes of additional valves 16, 17, the anodes connected to the winding 2. To the combined cathodes of the rectifier valves 7, the combined anodes of additional valves 18, 19 are connected, the cathodes connected to the winding 5, Filter tanks 20–22 are connected between

одноименными выводами соседних вторичных обмоток. Выводы .обмоток 2, 5 , к которым подключены фильтрующие емкости 20, 22, образуют выходные выводы 23,24. Введение дополнительных вентилей 16 - 19, обмоток 2, 5 и фильтрующих емкостей 20, 22 обеспечивает снижение уровн пульсаций выходного напр жени , что приводит к достижению поставленной цели. 2 з.п. ф-лы, 3 ил.similar conclusions of the neighboring secondary windings. The winding terminals 2, 5, to which the filtering containers 20, 22 are connected, form the output terminals 23,24. The introduction of additional valves 16–19, windings 2, 5, and filter tanks 20, 22 reduces the ripple level of the output voltage, which leads to the achievement of the goal. 2 hp f-ly, 3 ill.

1one

Изобретение относитс к электротехнике , предназначено дл преобразовани электромагнитной энергии и может быть использовано в качестве источника высокого посто нного напр жени дл питани рентгеновской и другой электрофизической аппаратуры.The invention relates to electrical engineering, is intended to convert electromagnetic energy and can be used as a source of high constant voltage to power X-ray and other electrophysical equipment.

Цель изобретени - улучшение массогабаритньтх показателей путем снижени уровн пульсаций выходного напр жени .The purpose of the invention is to improve the mass and size parameters by reducing the output voltage ripple.

На фиг,1 приведена принципиальна схема выпр мител при, выполнении двухполуприодных выпр мителей в виде мостовых; на фиг.2 - то же,при .выполнении двухполупериодных вьшр мителей с уменьшенным количеством вентилей; на фиг.З - осциллограммы напр жений, действующих в устройствеFig. 1 shows a schematic diagram of a rectifier for when two-half-rectifiers are made in the form of bridge ones; 2 - the same, with .full-wave full-timers with a reduced number of valves; Fig. 3 shows oscillograms of voltages acting in the device.

Выпр митель (фиг,1) содержит трансформатор с первичной обмоткой 1 и вторичными обмотками 2 - 5, Обмотки 3 и 4 подключены к мостовым вьтр мител м 6 и 7, выполненньп- на вентил х 8 - 15. Мостовые выпр мители соединены последовательно, при этом к объединенным анодам первогЬ выпр мител 6 подключены объединенные катод двух вентилей 16 и 17, подключенных анодами к выводам обмотки 2. К объединенным катодам последнего вьшр мител (в данном случае - второго выпр мител 7) подключены объединенные аноды двух вентилей 18 и 19, подключенных катодами к выводам обмотки 5.The rectifier (FIG. 1) contains a transformer with the primary winding 1 and the secondary windings 2-5. The windings 3 and 4 are connected to bridge connectors 6 and 7, made on valves 8-15. The bridge rectifiers are connected in series with In this case, the combined cathode of two valves 16 and 17 connected by anodes to winding terminals 2 is connected to the combined anodes of the first rectifier 6. The combined anodes of the two valves 18 and 19 connected to the combined cathodes of the last supplier (in this case, the second rectifier 7) cathodes to conclusions about hanks 5.

Фильтрующие емкости 20 - 22 включены между одноименными выводами соседних вторичных обмоток, ,Filter tanks 20–22 are connected between the same terminals of the adjacent secondary windings,

Выходные выводы 23 и 24 образованы выводами двух крайних обмоток, кOutput pins 23 and 24 are formed by pins of two extreme windings, k

которым подключены фильтрующие емкости .which are connected to filter tanks.

Выпр митель {фиг.2) отличаетс от выпр мител (фиг.1) выполнением двухполупериодных выпр мителей.Вторичные обмотки 25 - 30 подключены к двум параллельным группам вентилей 31 36 и 37 - 42 таким образом, как показано на фиг.2, т.е. с подключением каждой из обмоток к двум указанным группам из последовательно соединенных вентилей. Фильтрующие емкости 43 - 47 включены так же, как в устройстве (фиг.1). Аналогично образованы выходные зыводы 48 и 49.The rectifier (FIG. 2) differs from the rectifier (FIG. 1) in the implementation of full-wave rectifiers. The secondary windings 25-30 are connected to two parallel groups of valves 31 36 and 37-42 in this way, as shown in FIG. 2, t. e. with the connection of each of the windings to the two specified groups of series-connected valves. Filter tanks 43 - 47 are included in the same way as in the device (figure 1). Similarly, the output stays 48 and 49 are formed.

Устройство (фиг,1) работает следующим образом.The device (Fig, 1) works as follows.

При подключении обмотки I к источнику переменного напр жени во вторичных обмотках 2-5 навод тс ЭДС. Пусть в рассматриваемый момент времени их пол рность совпадает с указанной на чертеже. Тогда открываютс вентили 18,8,11,12,15 и 18, через которые обмотки 2-4 соедин ютс последовательно, создава ток в цепи нагрузки, подключенной к вы1ХОДНЫМ вьшодам 23 и 24. Одновременно ёмкость 20 зар жаетс от обмотки 2 до амплитудного значени ЭДС через йентили 17 и 8. Емкость 21 зар жаетс от обмотки 3, емкость 22 - от обмотки 4,When the winding I is connected to the alternating voltage source in the secondary windings 2-5, emf is induced. Let at the considered moment of time their polarity coincides with that indicated in the drawing. Then valves 18, 8, 11, 12, 15, and 18 are opened, through which windings 2-4 are connected in series, creating a current in the load circuit connected to OUTLET terminals 23 and 24. At the same time, capacity 20 is charged from winding 2 to an amplitude value The emf is through yentiles 17 and 8. The capacitance 21 is charged from the winding 3, the capacitance 22 from the winding 4,

Claims

The winding 5 is at idle. When the EMF passes through a maximum, the valves 17 and 8 are closed under the action of the potential difference between the terminal of the winding 3 and the outlet of the winding 2 created by the winding 2 and the capacitor 20. Similarly, the valves 11, 12,15,18 are closed under the action of the corresponding potential differences. The capacitances 20 - 22 connected in series are discharged through the load until the absolute values of the EMF in the windings 2 - 5 reach the values of the voltages on the capacitors 20-22. At the moment when this occurs, valves 16, 9, 10, 13, 14 and 19 are opened (as the polarization of the emf has changed). In this case, the capacitor 20 is connected in parallel with the winding 3 and is charged to the amplitude of the EMF. The capacitance 21 is charged from the winding 4, and the capacitance 22 is from the winding 5. In this case, the winding 2 is idling. When the EMF passes through a minimum, the valves 16, 9, 10, 13, 14 and 19 close, and the discharge of the tanks 20 22 through the load will begin. At the moment when the EMF values in the windings 2-5 again reach the values of the voltages on the capacitors 20-22, the valves 17, 8, 11, 12, 15 and 18 open, after which the processes are repeated in the specified sequence. In FIG. 3, curve 50 is the voltage U (in winding 2, curve 51 is the voltage U on the capacitor 20, curve 52 is the voltage Uj at the output pins 23 and 24. Since the terminals of the windings 2 and 5 are connected to the output conclusions, then their potentials relative to a common point are set. Potentials of windings 3 and 4 are given by a chain of capacitances 20 - 22, the voltage on which is constant up to the pulsation value (curve 51 in FIG. 3). The device (FIG. 2) works. in a similar way. Formula 1: A high-voltage rectifier containing a transformer with N secondary windings and, each of which is connected to one of the series-connected full-wave rectifiers, and (N-1) filtering capacitances, which are connected between each of the like terminals of the secondary windings, so that In order to improve the mass and weight indicators by reducing the output voltage ripple, two additional secondary windings were introduced, two pairs of valves and filtering tanks, one of which is connected to the output of the first one, the other to the Nth output of the secondary winding, and the other to same name at the output of the corresponding additional secondary winding, the anodes of the first pair of valves are connected to the broods of the first additional winding, the cathodes of the second pair are connected to the conclusions of the second additional winding, and the cathodes (anodes) of the first (second) pair of valves are connected to the first (Nth) full-wave rectifier the output side is formed by the leads of additional windings to which the filtering capacitances are connected. 2, The rectifier according to claim 1, about t l and -. Since the cathodes of the first pair of valves are combined and connected to the anodes of the first bridge rectifier, the anodes of the second pair of valves are combined and connected to the cathodes of the N-ro bridge rectifier. 3. The actuator according to claim 1, characterized in that the full-wave rectifiers together with the additionally introduced valves are made in the form of two parallel groups of valves in which the valves are interconnected in series, the beginnings of the odd of the N secondary windings are connected to the odd anode connection points and cathodes of the first group of valves, and the ends to the odd points of connection of the anodes and cathodes of the second group of valves, the beginnings of even of the N secondary windings are connected to even points of connection of the anodes and cathodes of the second group of valves leu, and krntsi - to the even points of connection of the anodes and cathodes of the first group of valves, with each of the four additionally inserted valves interconnecting different conclusions of the secondary windings.

Fig.Z