RU204U1 - High Speed AC / DC Converter - Google Patents

Abstract

1. A high-speed AC / DC converter containing a transformer, the primary winding of which is connected to the input terminals of the device, the first output of the secondary winding of the transformer is connected to the input of the first diode-capacitive storage cell, and the second to the common bus of the device, the second diode-capacitive storage cell moreover, the outputs of the first and second diode-capacitive storage cells through ballast resistors are connected respectively to the information inputs of the first and second switch orov, the control inputs of which are connected respectively to the outputs of the second and first formers, and the outputs are connected to a common bus of the device, an adder, the second input of which is connected to the output of the bias voltage source, and the output is connected to the output terminal of the device, characterized in that zero is introduced into it -organ, the third and fourth switches, an inverter, the input of which is connected to the input of the zero-organ and connected to the first output of the secondary winding of the transformer, and the output is connected to the input of the second diode-capacitive storage cell and, the outputs of the first and second diode-capacitive storage cells are connected respectively to the information inputs of the third and fourth switches, the outputs of which are combined and. connected to the first input of the adder, the direct output of the zero-organ is connected to the input of the first driver and the control input of the third switch, the inverse output of the zero-organ is connected to the input of the second driver and the control input of the fourth switch. 2. The converter according to claim 1, characterized in that the first and second repeaters are additionally introduced into it�

Description

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::. The proposed utility model relates to the field of electrical measurements and can be used as a high-speed 7th sensor of the amplitude value of continuous voltage.: even one of the most built-in measuring, control, and control systems.

Known for high-speed AC / DC converter / I /, containing: trans:;. О.rmator, .native 1.just, resistor divider; voltage, jitter:; I press the 1st capacitor, the voltage repeater, the variable-component amplifier, the converter strained: eniyo, exuding to -1aprya: ken: .. I am biasing.

The disadvantages of the analogue are low speed (due to iner1:, the ionicity of the amplifier of the overloaded component of the voltage, made on the basis of the operational direct current with a section / solid capacitor at the input), and the rush has a high level of ripple output voltage; -: shniya of the converter.

The closest technical solution to npe; yiaraeMOiyiy is an ac converting amplitude converter in nocTOHiiHoe / 2 /, containing a phase inverter, I memorize bottom-capacitance cells, cells, switches, Ш1 diode element, dryer, comparators, shapers,

The disadvantages of the prototype are: a) low accuracy due to the presence of .- azo inverter, which introduces an error due to different parameters of the floor / windings; b) non-shrinking. The steps of the output voltage are: d: the 1st converter, which are formed after the end of each next half-cycle of the mains voltage (it occurs during transient processes of the converter and is due to the onopiiKTvi changing the voltage of the comparators supplied to their inputs with

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device output) - this drawback makes it difficult to synchronize the converter with the last; / 10; 1Ts1i and the units of the systems E of the devices into which the converter is included, and the 1st: yes introduces an additional error in the operation of the entire system as a whole; c) a high level of ripple (due to the large discharge current of the diode-egosity memory cells through the input impedance of the s-lator).

The purpose of the proposed useful product is to increase the accuracy of the device and reduce the pulse rate of a BLDI single voltage; en11ya.

The specified goal is achieved by those: .-- that in the converter of the ampl-conduit of an alternating voltage ::: Yes; I B standing1 Eoe, contains; :: a diy transformer, the outputs of the primary winding of which are connected to the input terminals of the device, the first output of the Secondary obg / the transformer yokes are connected to the input of the first thoroughly capacitive zaog.shnashshshshshshh cells, and the second - with a common bus device, the second diode-power11} cho memory cell, and the outputs of the first and second memory cells through ballast resins are connected respectively to the infirmation inputs of the first and second For cochutators, the control inputs of which are connected to the outputs of the second and first formers, and the outputs are connected to a common blue device, the adder, the second input of which is connected to the output of the voltage source;: bias, and the output is connected to the output of the glue device, in addition introduced n / l-organ, the third and fourth switches, an inverter, the input of which is combined with the input of the zero-organ l: it is connected to the first output of the secondary winding of the transformer, and the output is connected to the input of the second diode-capacitive memory cell , the outputs of the first and second memory cells are connected respectively to the information inputs of the third and fourth switches, the outputs of which are connected, connected and connected to the first input of the adder, direct the output of the organ is connected to the input of the first driver and control the 1st input of the third switch, the inverse output is zero - the organ is connected to the input of the second shaper and the control input of the fourth koshlutator; The first and second repeaters and a smoothing capacitor connected in parallel with the feedback feedback resistor of the adder are also introduced into the converter, the axis of the first diode-capacitive storage cell is connected through the first repeater to the information :: input of the third co-incutator, the output of the second diode-capacitive storage cell through the second repeater connected to the input of the fourth switch.

Figure 1 shows the structural diagram of the Converter, and figure 2 shows graphs of changes in voltage on its elements.

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the second output of which is connected to the general ycTpoiiCTBa, the terminals of the primary swallow trans of the regulator I are connected to the input terminals of the converter, the outputs of the first 2 and second 3 cells through ballast resistors 4 and 5 are connected respectively to the information inputs of the first 3 and second 7 switches, the outputs of which are connected to with a common mud 3 of the device, the input of the first memory cell 2 is connected to the input of the zero-organ 8 and through the inverter S to the input of the second memory cell 3, the outputs of the first 2 and second 3 memory cells through the first 1C and second II repeat and soed11neny respectively with informasch-yunnymi inputs 12 of the third and fourth switches 13, the outputs of which sheny eV and soedinehsh the first) L sushlatora input 14, a second input coupled to an output of voltage source 15; : still mixed, parallel to the feedback resistor 13 of cymiaTOpa 14, a smoothing capacitor 17 is connected, the output of the adder 14 is connected to the output 1 of the device, the direct output of the zero-organ 8 is connected to the control input of the third damper 12 and, through the first driver 18, the control input of the second switch 7, the inverse output of the zero-organ 8 is connected to the control input of the fourth commutator 13 and, through the second forger 19, with the control input of the first collutator 6.

The converter operates as follows.

The tested variable is U ,,. (On the primary winding of an extinction transformer I, having a transformation coefficient Kj. And the secondary winding; -: transformer I is applied to the inputs of the diode-capacitive storage cells 2 and 3 - indirectly and through the inverter b, - tang i : o the input of the zero-organ o., .. 1od110 capacitive cells 1 and 2 remember the amplitude value of the voltage that was reached during the previous half-cycle of the input voltage; zero-organ 8 is triggered when passing through the zero value of the investigated naprt1 2 (figure 2 shows the voltage of its spindle output L).

At the time of if if O ’, a single voltage appears on the swift output of the zero-organ 8. .1 voltage, which starts the first shaper 18 with its leading edge. Shaper 18 with its output short pulse, acting on the control input of the second koshutator 7, opens the discharge circuit of the second capacitive the memory cell 3 through the ballast resistor 5 and the switch 7. During the duration of the output pulse of the shaper 18, the voltage of the capacitor D11 of a single-capacitive swell cell-ai 3 is destroyed to the level of the input voltage:;: cell, after which it repeats the inverted input voltage curve: and / (after reaching ::: yes: I’m directly :: by a capacitor of mesh III 3 of the amplitude value of the studied voltage 1, the cell’s charge stops (due to the input cell diode), and

The output is up to the end. t0yeu: total and during the next half / periods of the input voltage s, d; der:; a constant naprzhkeg-chehe, equal to

.sh

where L / f is the amplitude value of the input voltage of the Converter.

A single connection is straight, south exit N.; the organ 8 in the interval 7 is about attachment: 1: connected to the control input 1 of the third switch 12, as a result of which the output voltage of the first diode is applied to the first input of the adder 14 in this interval capacitive rushing 2 L, accumulated in the antecedent .; the floor period of the investigated voltage.

At time t, the null-element b releases, and a single voltage / voltage appears on its inverse output, starting the second shredder 19.3 with its front-facing front, the output of the last one affects the control input of the first switch 6, which leads to the discharge of the capacitor of the first diode there is a non-persistent combining cell 2. At time t, at bsodnoy voltage reaches the amplitude value) which is remembered by cell 2 until the moment of interruption etc. Those. with a storage cell 2 and 3, during 1/4 of the period T of the studied voltage from its beginning, useful information is dumped and accumulated, after which during the remaining part of the period of 3/4 T this information with a delay of 1/2 T from the beginning of the period is fed to the first input of the adder 14.

At the output of the converter, voltage appears.

..

/WITH. .

where Kj is the transformation coefficient of the transformer I;

% 4-1 the transfer coefficient of the sum / ator 14 according to the first and

second entrances; A C- Back time; er: rh converter equal to 1/4 T;

IL - voltage; 1-: bold, which is set as a minimum / maximum voltage;

As can be seen from formula (2), the output and output: the converter is proportional to the changing part of the studied stress.

 С1ш; .the current ripple of the output voltage parallel to the feedback resistor 13 of the adder 14 is related to:; sewing capacitor 17.

The advantages of the converter in comparison with the well-known technical solutions of a similar purpose are: a) more BESOL .-, with:. I accuracy; b) the same duration of the steps of the output voltage synchronized with the period of the investigated soil pollution; c) in non- /,: e (// y / L, / I

FEW times lower output voltage ripple (iipiaiepno by an order of magnitude), which ultimately means:.:; E increases the accuracy of the device. Gxeiv.a converter is simple to be implemented on 8 widespread integrated circuits of domestic production: inverter 9 to adder 14 to K140UDZ, repeaters 10 and II to K140UD6, switches G, 7, 12, 13 to K2841-i11, n - al-organ 8 - K554SA4, yormnovers 18, 19 - on K155AGZ.

When compiling a description of shshshshshmshyshzhgschtsshshshsh.vvki: 1spluzavank next, and then sources of information:

1. Ermakov B.F., Terebaev V.Z. High-speed converter of supercharged voltage; -: e11aya to constant. - Izv. universities of the USSR. Ser. Electroglechans, 1981,. 8, p. 34-935.

2.A.s. USSR p 1033977, class COIR 19/22, 1982 (prototype).

/ I i f / / - 7 l / V

The author-applicant, honored inventor of the RSFSR / V.F. Ermakov

Claims (2)

1. A high-speed AC / DC converter containing a transformer, the primary winding of which is connected to the input terminals of the device, the first output of the secondary winding of the transformer is connected to the input of the first diode-capacitive storage cell, and the second to the common bus of the device, the second diode-capacitive storage cell moreover, the outputs of the first and second diode-capacitive storage cells through ballast resistors are connected respectively to the information inputs of the first and second switch orov, the control inputs of which are connected respectively to the outputs of the second and first formers, and the outputs are connected to a common bus of the device, an adder, the second input of which is connected to the output of the bias voltage source, and the output is connected to the output terminal of the device, characterized in that zero is introduced into it -organ, the third and fourth switches, an inverter, the input of which is connected to the input of the zero-organ and connected to the first output of the secondary winding of the transformer, and the output is connected to the input of the second diode-capacitive storage cell and, the outputs of the first and second diode-capacitive storage cells are connected respectively to the information inputs of the third and fourth switches, the outputs of which are combined and. connected to the first input of the adder, the direct output of the zero-organ is connected to the input of the first driver and the control input of the third switch, the inverse output of the zero-organ is connected to the input of the second driver and the control input of the fourth switch. 2. The converter according to claim 1, characterized in that the first and second repeaters and a smoothing capacitor connected in parallel with the adder feedback resistor are additionally introduced into it, the output of the first diode-capacitive storage cell is connected through the first repeater to the information input of the third switch, the output the second diode-capacitive storage cell through the second repeater is connected to the information input of the fourth switch.