SU1229736A1 - Pulsed d.c.voltage stabilizer - Google Patents

Abstract

The invention relates to electrical engineering. It allows to increase the reliability / functioning of the powered equipment by reducing the level of high-frequency interference while simultaneously increasing the efficiency of the DC voltage regulator and reducing its mass and volume. The stabilizer contains a regulating element (OM) with a control unit 2. Input LC filter 8 is turned on at the input of the ER 1, and two LC output filters 4 and 6 are connected at the output. The goal is achieved by filter chokes 4, 6 and 8 provided with additional windings wound on the core simultaneously with the main winding. Additional windings 13 and 14 throttles form, with the main coil 12, a system with distributed parameters, which has an equivalent capacity and inductance. When you connect one of the points to the common bus 5, this system works like a filter. 6 # .p. f-ly, 8 ill. S (L to N9 SO AK

Description

The invention is from electrical engineering and radio engineering and is intended for use as a source of secondary power supply in the microelectronic design,

The purpose of the invention is to increase the reliability of the functioning of the powered equipment by reducing the level of high-frequency interference, increasing the efficiency and reducing the volume and volume of the stabilizer a.

Fig. 1 shows a structural system of a dc voltage regulator; 2 is a diagram of connecting additional windings of chokes of LC filters when the end of the first additional winding is connected to the beginning of the second additional winding 5 and the beginning of the first additional winding is connected to the common bus in FIG. 3 - the same when the beginning of the first is connected together and the end of the second additional windings are connected to the common bus :; in fig. 4 - the same ;, when combined: the ends of the additional windings are connected to a common bus; 5 - the same 5 times the ends of the windings are interconnected and the beginning of the first additional winding is connected to a common bus; in fig. the same, when the combined beginnings before the fullness of the aps-windings are connected to the common bus; Fig. 7 illustrates frequency characteristics of suppressing high-frequency interference for different circuits including additional windings of chokes of LC filters; in fig. 8 - the same for a stabilizer with a two-stage output HC filter with different switching on of the additional windings of their chokes.

The DC voltage regulator contains a regulating element 1, a control output connected to the output of the control unit 2, a reverse diode 3 connected between the common point of the first force output of the regulating element 1 and the first output bus C 5 of the second output LC-F1 Sc 6 J connected between; the output of the first output BL of the filter and output terminal 7, and the input LC filter 8 (connected between, between the input terminal 9 and the second power output of the regulating element 1.

Kaedy phypt): contains sndensa-, torus 1C and throttle I. Let us accept the choke equipped with the main 1 2 n additional windings 13 to 1 h,: 1 amotanny1 1I coBMecTiio.

In Fig. 7, graphs 15-19 reflect the dependence of the suppression of high-frequency interference on the frequency for the circuit. switching on additional windings of chokes of HC-filter-grove; given respectively on F1-: g, 2-5.

Diagram 20 (, fkg.8) is off; sae G is the dependence of suppression of high-frequency noise on frequency for a stabilizer with juz is isHHbn-i L-volts; at the moment when the additional;: ü and romp throttles include-p-, ma / hdu co; oh and common p: another p rypnychny L;: ob aii.

The impulse c / -abilizer is constant) / about. For example, the burner works in the following way.

Black Uko BII UHH 2 forms a sequence of control impulses,

commuting another element 1 in this way; that the output voltage remains at the setpoint;;; level When the retouching element is inserted as the active diode 3 is closed not by the NOEssDu - stabilizer flows with the transducer; s current; which causes the appearance of high frequencies;

Additional windings 13 and 14

with the coil 12 and the interconnected system with distributed parameters, possessing equivalent capacitance and inductance “At 1dkey” 1 of one of the points to screw 5 SVB. ci-; a wall with distributed parameters works like a filter; NZZA YALP; Sig- nificant inductance and capacitance of the system, its own frequency is in the range of% dip;% ekkc megahertz, where it is found, with the main frequency spectrum of interference, the reason: No. x skzozny current. Meng is distributed :: -; ь e pars-atra (capacitance and inductance) by changing the circuit connections of the additional 1x windings 13 and J4 IU. do the same and the common bus 5, you can combine your own resonant frequency with the frequency of maximum density; interference noise; which will significantly improve the interference suppression :, Then, the SiTo interference suppression is carried out in the throttle 11 of input 8 or output 3.

4 and 6 LC filters connected directly to the interferer without intermediate links, reduce the number of elements in which the high-frequency noise flows, which leads to a decrease in the level of the interfering field and the EMF produced by this field

in clean conductors behind the noise suppression filter.

FIG. 2 shows a circuit including droplets 11 when the end of the first additional winding 13 is connected to the start of the second additional winding 14, and the beginning of the first additional winding 13 is connected to the common bus 5 of the stabilizer.

Fig. 7 shows the frequency dependence of the interference suppression 15 for the switching circuit (Fig. 2).

Fig. 3 shows the circuit for switching on the throttles 11, when the beginning of the first additional winding 13 and the horse of the second additional winding 14 are connected to the common bus 5 of the stabilizer. Due to the decrease in the equivalent inductance, the natural resonant frequency increases.

Fig. 7 shows the dependence of 16. interference on frequency for the switching circuit (Fig. 3).

Figure 4 shows the circuit for switching on chokes 11 when the ends of the first 13 and second 14 additional windings are connected to a common bus 5. At the same time, due to a decrease in the equivalent inductance, the natural resonant frequency f increases, so that f 2 f.

Figure 7 presents the dependence

17 of the frequency interference for the switch on circuit (FIG. 4).

Fig. 3 shows the circuit for switching on drossel 11, when the ends are additional:. The windings 13 and 14 are connected together, and the beginning of the first additional winding 13 is connected to the total length of 5. In this case, due to a decrease in the equivalent inductance, the intrinsic resonant frequency f,., increases. what fj f

 c, ciix, -3. l 5

Fig. 7 shows the dependence of 1 8 interference suppression on the frequency for the switching circuit (Fig. 3).

Figure 6 shows the circuit for switching on the throttles 11, when the beginnings of both additional windings 14 and 13 are connected to the common bus 5, herewith due to the fact that the circuit has small O 5

20

0

five

0

five

0

five

equivalent capacitance and inductance, - own resonant frequency is maximum, i.e. f f.

Fig. 7 illustrates the frequency dependent interference suppression for the circuit (Fig. 6).

FIG. 3 shows the total frequency-dependent interference suppression 20 for the case when additional windings 13 and 14 are connected to each other by 11 common busbars 5 in various ways, shown in FIG. 2, in throttles x 11 of the first 4 and second links of the output smoothing filter. 2-6 with two different natural resonant frequencies f and f. , The absence of additional elements designed to suppress high-frequency interference increases the efficiency and also reduces the mass and volume of the switching voltage regulator.

Claims (2)

Invention Formula 1. An impulse DC voltage regulator containing an input LC filter, an input connected to an input terminal, a regulating element connected between the input input and the input of the first output LC filter, and a control unit output connected to the control, output of the regulating element, wherein the output of the first output lc filter is connected to the output terminal, and a reverse diode is connected between the common point of the regulating element with the first output lc filter and the common bus, characterized in that, in order to increase reliability The performance of the powered equipment by reducing the level of high-frequency interference while increasing efficiency and reducing the mass and volume, the inductors of the input and first output LC filters are equipped with additional windings wound on the throttle core simultaneously with the main winding, and the additional windings are interconnected and one of the terminals and connected to a common bus. 2. The stabilizer according to Clause I., of which is the fact that the end of the first additional winding of the chokes of the LC filters is connected to the beginning of the second additional winding, and the beginning of the first additional winding connected to a common tire stabilizer. Zo Stabilizer according to the claim, that the beginning of the first additional winding and KQ- the second of the second additional winding of the chokes of the LC filters are connected to the common bus of the stabilizer. 4, the Stabilizer according to Clause G., characterized in that the ends of the first and second additional windings of the chokes of the .LC filters are connected to a common bus of the stabilizer, 5. The stabilizer in accordance with claim 1, about tl, which is due to the fact that the ends of the additional windings of the chokes of the LC-filter are connected together, and the beginning of the first additional winding is connected to the common bus of the stabilizer. 6. The stabilizer along n.l, which is ticked off by the fact that the beginnings of both additional windings of the chokes of the LC filters are connected to the common bus of the stabilizer. 7. Stabilizer according to claim 1, characterized in that, in order to expand the frequency band of the suppressed high-frequency interference, a second LC output filter is inserted into it, the choke of which is equipped with additional windings, wound together with the main one, connected between the output of the first output LC filter and the output terminal, moreover, the additional windings of the chokes of the first and second output LC filters are connected in different ways between each other and with a common bus stabilizer. ig.1 12 h // / I 13 / " S.-0 fig ft Fyg. 3 H./vSrVY „IrvY2 r“ / vyv 13 5