SU1023583A1 - Dc vl-to-dc voltage converter - Google Patents

Abstract

CONSTANT CONTROLLER DIRECTIONAL CONTAINER, STEPS, two channels, each of which (it is from an inverter and send out, and each transformer contains control regulation windings that are connected cross-consistent with the primary windings of another output and another, and the other one of the other, and the other, the other, and the other, the other, and the other, the other, and the other, the other, another, The windings through the said rectifiers are connected to the output terminals of the TGI and the TGI that, in order to reduce the weight and size of the transformers, the said control windings are formed in addition effective, with tapings from the primary winding of each transformer, with a portion of the primary winding between the input tap and the output terminal of the ts1xformator of another channel included with each aforementioned primary winding.

Description

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The invention relates to electrical engineering and is intended to convert a constant voltage of one level into a constant voltage of another level and can be used in the development of secondary power sources of electronic equipment.

Semiconductor (transistor) converters are known, in which the regulation of the output voltage is achieved by a phase shift of the voltages of the two inverter channels, with the output windings of the inverter transformers being connected downstream of Cl and 2 in series. .

The disadvantage of such converters is that the voltage-on windings of transformers of inverters is determined by the voltage of the converter power supply, which leads to 5, measuring: Dimensional powers, i.e. weight and dimensions) of these transformers.

Closest to the invention is a semiconductor converter, in which the weight and size of transformers are reduced so that the output windings of each channel have control windings that are connected cross-series with the primary windings of these output transformers, and the output windings of these transformers are connected in parallel to each other through the mentioned VNTB rectifiers Z.

A disadvantage of the known converter is that additional control windings are introduced into the output transformers, increasing their mass and dimensions.

The purpose of the invention is to reduce the weight and size of transformer transformers.

The goal is achieved by the fact that the voltage converter contains two channels, each of which consists of an inverter and a rectifier, the output transformers of each channel are diverted from the middle point and contain control windings that are connected cross-series with the primary windings of the output transformer of the other the channel, and their output windings are connected through the said rectifiers to the output terminals, the said control windings are formed by additional taps from the primary

windings of each transformer, while consistently with each mentioned primary winding a part of the primary winding is inserted between the input tapes and the output terminal of the transformer of another channel.

Figure 1 presents the diagram of the Converter with inverters with a midpoint / figure 2 is a diagram of the device with bridge circuits of inverters; FIG. 3 —diagram of stresses at characteristic points of the circuit.

The device (fig.ip contains two invertors. Channels 1 and 2, output transformers 3 and 4 with primary windings 5-8, control windings 9-12, made as parts of these windings, output windings 13 and 14, inverters transistors 15-18, the control units of the inversion channels | Tora 19 and 20, the diodes of the printers 21–24, the output L - C. smoothing filter 25, on the 26th f, the inserted taps 27–30 in the primary windings 5–8.

With the inverter post schemes, each transformer contains one primary winding (bridge), each winding being divided into two parts 5.5 and 7.7, taps 27 and 29 are introduced into the parts of windings 5 and 7, transistors 31-34 are added .

The device (figure 2) works as follows.

At the maximum supply voltage of Opit max, the transistors 15 are open,

17 (or 16, IB / .. Voltage at primary windings

5-8 equals U pit. minus the voltage of the part of the primary windings 5-8 between the taps 27-30 and the corresponding terminal of the power source.

With a minimum supply voltage i.UnHT. min open transistors 16,

18 (or 16, 17) and the voltage on the transducer winding 5-8 is equal to U plus

the voltage of the parts of these primary windings 5-8 between the taps 27-30 and the corresponding terminal of the power source.

The phase of the output channel voltage is changed. 1 and 2, the output voltage can be adjusted (FIG. 3).

Compared with the known converter circuit, a reduction in the dimensions and weight of the output transformers is achieved due to the fact that there are no separate control windings in the circuit — these windings are combined with the primary windings of these transformers.

Claims (1)

A DC / DC converter to DC, comprising (two channels, each of which consists of an inverter and a rectifier, and the output transformers of the inverting inverter contain control windings connected cross-series with the primary windings of the output transformer of the other channel, and their the output windings through the said rectifiers are connected to the output terminals, so that, in order to reduce the weight and dimensions of the transformers, the mentioned regulation windings are formed in addition tion. taps of the primary windings of each transformer, the series with the primary winding of each said primary winding part is included between the entered a tap transformer and the output terminal of the other channel. " KZ with SP 00 with