CN2852521Y - Three-phase synchronous rectification manostat - Google Patents
Three-phase synchronous rectification manostat Download PDFInfo
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- CN2852521Y CN2852521Y CN 200520010117 CN200520010117U CN2852521Y CN 2852521 Y CN2852521 Y CN 2852521Y CN 200520010117 CN200520010117 CN 200520010117 CN 200520010117 U CN200520010117 U CN 200520010117U CN 2852521 Y CN2852521 Y CN 2852521Y
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Abstract
The utility model relates to a three phase synchronous rectification voltage stabilizer, which comprises a sample circuit and a filtering capacitor, wherein the filtering capacitor is connected in parallel with the output terminal of a direct current. The utility model is characterized in that the three phase synchronous rectification voltage stabilizer also comprises rectification and voltage stabilization control circuits; each phase of a three phase alternating current is connected with an alternating current input terminal of the respective rectification and voltage stabilization control circuit; all the output terminals of the rectification and voltage stabilization control circuits are connected together to form the output terminal of the direct current; the input terminal of the sample circuit is connected with the output terminal of the direct current, and the output terminal of the sample circuit is connected with a sample signal input terminal of each rectification and voltage stabilization control circuit. With the advantages of simple structure, small size, low cost and low circuit loss, the utility model can change the three phase alternating current into the direct current for supplying reliable and stable output of direct current voltage.
Description
(1), technical field
The utility model relates to a kind of stable-pressure device, particularly a kind of three-phase alternating current is become galvanic rectifying pressurizer.
(2), background technology
Existing three-phase synchronous rectification manostat include sample circuit, semi-controlled bridge rectifier circuit and with DC output end and the filter capacitor that connects, its uses synchronous rectification integrated circuit to finish the generation of lock-out pulse and trigger impulse.In order to reach synchronous purpose, usually to use transformer independently that in the three phase mains each is taken a sample mutually.Use integrated circuit and transformer, not only cost height, heaviness and volume are big, and because of the too high circuit loss that causes of electric current of the control section of entire circuit is big, entire circuit is also comparatively complicated.On the triggering mode of half control bridge, usually adopt pulse transformer to trigger the thyristor of three-phase half controlled bridge, though this moment, the circuits for triggering of thyristor can become very simple, but the volume of pulse transformer is still bigger, and cost is still higher, has restricted product and has developed to miniaturization.The utility model patent that a kind of name is called " half-controlled bridge type full-wave rectification voltage regulator " is disclosed in CN2442445Y, what its trigger control circuit mainly adopted is triode entirely, and the shared circuits for triggering of the three-phase of three-phase alternating current, though it simple in structure, cost is very low, exist control insecure deficiency.
(3), summary of the invention
The purpose of this utility model just provide a kind of simple in structure, volume is little, with low cost and three-phase synchronous rectification manostat that circuit loss is little, it can become direct current with three-phase alternating current, and reliable and stable direct voltage output is provided.
The purpose of this utility model is to realize by such technical scheme, it include sample circuit and with DC output end and the filter capacitor that connects, it is characterized in that: it also includes the rectifying and voltage-stabilizing control circuit, each of three-phase alternating current all is connected with the ac input end of separately rectifying and voltage-stabilizing control circuit mutually, it is exactly DC output end that the output of each rectifying and voltage-stabilizing control circuit links together, the input of sample circuit is connected with DC output end, and its output is connected with the sampled signal input of each rectifying and voltage-stabilizing control circuit.
The utility model is applicable to three-phase alternating current is converted in any power consumption equipment, electrical appliance and the interlock circuit of stable DC output, for example, the utility model can be used for threephase alternator.The utility model is like this work: the three-phase of three-phase alternating current enters separately rectifying and voltage-stabilizing control circuit through separately ac input end, the rectifying and voltage-stabilizing control circuit carries out alternating current to become after the rectification direct current of pulsation, export through the DC output end of rectifying and voltage-stabilizing control circuit again, after sample circuit takes out voltage signal from DC output end, deliver to again in the rectifying and voltage-stabilizing control circuit and handle automatically, that is: when the brownout of DC output end output, the rectifying and voltage-stabilizing control circuit is heightened VD automatically; When the overtension of DC output end output, the rectifying and voltage-stabilizing control circuit is turned down VD automatically; So, under the acting in conjunction of three rectifying and voltage-stabilizing control circuits, make DC output end carry out galvanic current output by a certain default magnitude of voltage.
Described rectifying and voltage-stabilizing control circuit includes the triggering signal control circuit, the semi-controlled bridge rectifier circuit, circuits for triggering and synchronous comparison signal generative circuit, the semi-controlled bridge rectifier circuit, it is exactly the input of rectifying and voltage-stabilizing control circuit that the input of circuits for triggering and synchronous comparison signal generative circuit all links together, the output of semi-controlled bridge rectifier circuit is exactly a DC output end, the output of circuits for triggering is connected with the signal controlling end of semi-controlled bridge rectifier circuit, the output of comparison signal generative circuit is connected with the comparison signal input of triggering signal control circuit synchronously, the sampled signal input of triggering signal control circuit is exactly the sampled signal input of rectifying and voltage-stabilizing control circuit, and the output of triggering signal control circuit is connected with the triggering signal input of circuits for triggering.
The rectifying and voltage-stabilizing control circuit is work like this: alternating current becomes the direct current of pulsation after the rectification of semi-controlled bridge rectifier circuit, by the output of semi-controlled bridge rectifier circuit, exports after the capacitor filtering shaping again; Simultaneously, alternating current is behind synchronous comparison signal generative circuit, generate the comparison signal of and approximate sawtooth waveforms synchronous with alternating current, this signal is delivered in the triggering signal control circuit through the comparison signal input, sample circuit takes out sampled signal from DC output end, and deliver in the triggering signal control circuit through the sampled signal input, the triggering signal control circuit compares comparison signal and sampled signal automatically, in one-period, when comparison signal during less than sampled signal, the output of triggering signal control circuit Triggerless, the semi-controlled bridge rectifier circuit does not have direct current output, with the value of electrical signals of reduction DC output end, thereby reduce the sampled signal value; When comparison signal during greater than sampled signal, the triggering signal control circuit sends triggering signal, and this triggering signal is delivered in the semi-controlled bridge rectifier circuit semi-controlled bridge rectifier circuit output DC after circuits for triggering are handled, with the value of electrical signals of increase DC output end, thereby increase the sampled signal value.So, by the ON time length of control semi-controlled bridge rectifier circuit, control DC output end automatically and carry out galvanic current output by a certain default magnitude of voltage in each cycle.The utility model is exactly respectively each of three-phase alternating current controlled mutually automatically with three above-mentioned rectifying and voltage-stabilizing control circuits, under their common effects, make DC output end by the stable voltage of preset value output, that is: when dc output voltage increases, sampled signal increases, the semi-controlled bridge rectifier circuit was shortened in the time of the output voltage in each cycle, cause the voltage of dc output end to descend, be tending towards default stable magnitude of voltage; When dc output voltage reduced, sampled signal reduced, and made the semi-controlled bridge rectifier circuit elongated in the time of the output voltage in each cycle, caused the voltage of dc output end to rise, and was tending towards default stable magnitude of voltage.
Owing to adopted technique scheme, the utlity model has following advantage:
1. because of not having bulky sampling transformer and pulse transformer, make circuit structure of the present utility model simple, volume is little, and is in light weight;
2. owing to reliable and stable work and with low cost, it has improved the cost performance of product and the market competitiveness significantly.
3. be general components and parts entirely owing to what adopt, be easy to buying, be easy to realize the large-scale production of product.
4. owing to do not have transformer and complicated integrated circuit, the operating current of the control section of entire circuit has reduced several times, and therefore, its electric energy loss is little.
(4), description of drawings
Description of drawings of the present utility model is as follows:
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the block diagram of rectifying and voltage-stabilizing control circuit;
Fig. 3 is the circuit diagram of trigger control circuit;
Fig. 4 is the circuit diagram of semi-controlled bridge rectifier circuit;
Fig. 5 is first kind of circuit diagram of circuits for triggering;
Fig. 6 is second kind of circuit diagram of circuits for triggering;
Fig. 7 is the third circuit diagram of circuits for triggering;
Fig. 8 is the 4th a kind of circuit diagram of circuits for triggering;
Fig. 9 is first kind of circuit diagram of synchronous comparison signal generative circuit;
Figure 10 is second kind of circuit diagram of synchronous comparison signal generative circuit;
Figure 11 is first kind of circuit diagram of sample circuit;
Figure 12 is second kind of circuit diagram of sample circuit;
Figure 13 is the third circuit diagram of sample circuit;
Figure 14 is a kind of integrated circuit figure of the present utility model;
Figure 15 is at the signal of telecommunication graph of a relation of three-phase alternating current A circuitry phase reference point among Figure 14;
Among the figure: 1. sample circuit; 2. rectifying and voltage-stabilizing control circuit; 3. triggering signal control circuit; 4. semi-controlled bridge rectifier circuit; 5. circuits for triggering; 6. synchronous comparison signal generative circuit.
(5), embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, the utility model include sample circuit 1 and with DC output end U
0And the filter capacitor C that connects, it is characterized in that: it also includes rectifying and voltage-stabilizing control circuit 2, each phase U of three-phase alternating current
A, U
B, U
CAll be connected with the ac input end of separately rectifying and voltage-stabilizing control circuit 2, it is exactly DC output end U that the output of each rectifying and voltage-stabilizing control circuit 2 links together
0, the input of sample circuit 1 and DC output end U
0Connect, its output is connected with the sampled signal input of each rectifying and voltage-stabilizing control circuit 2.
As shown in figure 14, the utility model is like this work: the three-phase of three-phase alternating current enters separately rectifying and voltage-stabilizing control circuit 2 through separately ac input end, rectifying and voltage-stabilizing control circuit 2 carries out alternating current to become after the rectification direct current of pulsation, export through the DC output end of rectifying and voltage-stabilizing control circuit 2 again, after sample circuit 1 takes out voltage signal from DC output end, deliver to again in the rectifying and voltage-stabilizing control circuit 2 and handle automatically, that is: when the brownout of DC output end output, rectifying and voltage-stabilizing control circuit 2 is heightened VD automatically; When the overtension of DC output end output, rectifying and voltage-stabilizing control circuit 2 is turned down VD automatically; So, under the acting in conjunction of three rectifying and voltage-stabilizing control circuits 2, make DC output end carry out galvanic current output by a certain default magnitude of voltage.
As shown in Figure 2, rectifying and voltage-stabilizing control circuit 2 includes triggering signal control circuit 3, semi-controlled bridge rectifier circuit 4, circuits for triggering 5 and synchronous comparison signal generative circuit 6, the input of semi-controlled bridge rectifier circuit 4, circuits for triggering 5 and synchronous comparison signal generative circuit 6 all links together and receives the input of rectifying and voltage-stabilizing control circuit 2, and the output of semi-controlled bridge rectifier circuit 4 is exactly DC output end U
0The output of circuits for triggering 5 is connected with the signal controlling end of semi-controlled bridge rectifier circuit 4, the output of comparison signal generative circuit 6 is connected with the comparison signal input of triggering signal control circuit 3 synchronously, the sampled signal input of triggering signal control circuit 3 is exactly the sampled signal input of rectifying and voltage-stabilizing control circuit 2, and the output of triggering signal control circuit 3 is connected with the triggering signal input of circuits for triggering 5.
The rectifying and voltage-stabilizing control circuit is work like this: alternating current becomes the direct current of pulsation after the rectification of semi-controlled bridge rectifier circuit 4, by the output of semi-controlled bridge rectifier circuit 4, exports behind the capacitor C filter shape again; Simultaneously, alternating current generates the comparison signal of and approximate sawtooth waveforms synchronous with alternating current behind synchronous comparison signal generative circuit 6, and this signal is delivered in the triggering signal control circuit 3 through the comparison signal input, and sample circuit 1 is from DC output end U
0Take out sampled signal, and deliver in the triggering signal control circuit 3 through the sampled signal input, triggering signal control circuit 3 compares comparison signal and sampled signal automatically, in one-period, when comparison signal during less than sampled signal, the output of triggering signal control circuit 3 Triggerless, the 4 no direct current outputs of semi-controlled bridge rectifier circuit are to reduce DC output end U
0Value of electrical signals, thereby reduce the sampled signal value; When comparison signal during greater than sampled signal, triggering signal control circuit 3 sends triggering signal, and this triggering signal is delivered in the semi-controlled bridge rectifier circuit 4 after circuits for triggering 5 are handled, and semi-controlled bridge rectifier circuit 4 output DCs are to increase DC output end U
0Value of electrical signals, thereby increase the sampled signal value.So, by the ON time length of control semi-controlled bridge rectifier circuit 4, control DC output end U automatically in each cycle
0Carry out galvanic current output by a certain default magnitude of voltage.
The utility model is exactly respectively each of three-phase alternating current to be controlled mutually automatically with three above-mentioned rectifying and voltage-stabilizing control circuits 2, under their common effects, makes DC output end U
0Press the stable voltage of preset value output, that is: as DC output end U
0When voltage increased, sampled signal increased, and semi-controlled bridge rectifier circuit 4 was shortened in the time of the output voltage in each cycle, causes dc output end U
0Voltage descend, be tending towards default stable magnitude of voltage; As DC output end U
0When voltage reduced, sampled signal reduced, and made semi-controlled bridge rectifier circuit 4 elongated in the time of the output voltage in each cycle, caused dc output end U
0Voltage rise, be tending towards default stable magnitude of voltage.
As shown in Figure 3, triggering signal control circuit 3 includes comparator IC and photoelectrical coupler P, the in-phase input end of comparator IC is exactly the sampled signal input of triggering signal control circuit 3, the inverting input of comparator IC is exactly the comparison signal input of triggering signal control circuit 3, the output of comparator IC is connected with the input of photoelectrical coupler P, two outputs that output is exactly a triggering signal control circuit 3 of photoelectrical coupler P.
As shown in Figure 4, semi-controlled bridge rectifier circuit 4 includes the first thyristor VT1 and the first diode D1, the plus earth of the first diode D1, its negative electrode is connected with the anode of the first thyristor VT1, the negative electrode of the first thyristor VT1 is exactly the output of semi-controlled bridge rectifier circuit 4, the anode of the first thyristor VT1 is exactly the input of semi-controlled bridge rectifier circuit 4, and the gate pole of the first thyristor VT1 is exactly the signal controlling end of semi-controlled bridge rectifier circuit 4.
As shown in Figure 5, circuits for triggering 5 can be to include the second diode D2, the second thyristor VT2, first resistance R 1 and second resistance R 2, the anode of the second thyristor VT2 is connected with the gate pole of the second thyristor VT2 by second resistance R 2, the negative electrode of the second thyristor VT2 is connected with the anode of the second diode D2, the negative electrode of the second diode D2 is connected with DC output end U0 by first resistance R 1, the anode of the second thyristor VT2 is exactly the input of circuits for triggering 5, the negative electrode of the second diode D2 is exactly the output of circuits for triggering 5, and the gate pole of the anode of the second diode D2 and the second thyristor VT2 is exactly two triggering signal inputs of circuits for triggering 5.
As shown in Figure 6, circuits for triggering 5 can be to include the second diode D2, the second thyristor VT2, the 3rd thyristor VT3, first resistance R 1, second resistance R 2 and the 3rd resistance R 3, the anode of the 3rd thyristor VT3 is connected with the gate pole of the 3rd thyristor VT3 by the 3rd resistance R 3, the gate pole of the 3rd thyristor VT3 is connected with the gate pole of the second thyristor VT2 by second resistance R 2, the negative electrode of the 3rd thyristor VT3 is connected with the anode of the second thyristor VT2, the negative electrode of the second thyristor VT2 is connected with the anode of the second diode D2, the negative electrode of the second diode D2 is connected with DC output end U0 by first resistance R 1, the anode of the 3rd thyristor VT3 is exactly the input of circuits for triggering 5, the negative electrode of the second diode D2 is exactly the output of circuits for triggering 5, and the gate pole of the anode of the second diode D2 and the second thyristor VT2 is exactly two triggering signal inputs of circuits for triggering 5.
As shown in Figure 7, circuits for triggering 5 also can include the second diode D2, triode T, first resistance R 1 and the 4th resistance R 4, the collector electrode of triode T is connected with the base stage of triode T by the 4th resistance R 4, the emitter of triode T is connected with the anode of the second diode D2, the negative electrode of the second diode D2 is connected with DC output end U0 by first resistance R 1, the collector electrode of triode T is exactly the input of circuits for triggering 5, the negative electrode of the second diode D2 is exactly the output of circuits for triggering 5, and the base stage of the anode of the second diode D2 and triode T is exactly two triggering signal inputs of circuits for triggering 5.
As shown in Figure 8, circuits for triggering 5 can also be to include the second diode D2, field effect transistor Q, first resistance R 1 and the 5th resistance R 5, the drain electrode of field effect transistor Q is connected with the grid of field effect transistor Q by the 5th resistance R 5, the source electrode of field effect transistor Q is connected with the anode of the second diode D2, the negative electrode of the second diode D2 is connected with DC output end U0 by first resistance R 1, the drain electrode of field effect transistor Q is exactly the input of circuits for triggering 5, the negative electrode of the second diode D2 is exactly the output of circuits for triggering 5, and the grid of the anode of the second diode D2 and field effect transistor Q is exactly two triggering signal inputs of circuits for triggering 5.
Among above-mentioned Fig. 5,6,7 or 8, the resistance of first resistance R 1 can be infinity in the described circuits for triggering 5, promptly is equivalent to disconnect or remove first resistance R 1, and at this moment, circuits for triggering 5 still can be worked.Certainly, adjust first resistance R, 1 resistance, make it near certain value, the triggering effect of circuits for triggering 5 is obviously strengthened.In a word, first resistance R 1 is extremely important, but optional.
As shown in Figure 9, comparison signal generative circuit 6 can include the 6th resistance R 6 and first capacitor C 1 synchronously, one end ground connection of first capacitor C 1, the other end is connected with an end of the 6th resistance R 6, the other end of the 6th resistance R 6 is exactly the input of synchronous comparison signal generative circuit 6, and the link of the 6th resistance R 6 and first capacitor C 1 is exactly the output of synchronous comparison signal generative circuit 6.
As shown in figure 10, comparison signal generative circuit 6 also can also include the reverser of two series connection synchronously, one end of the 6th resistance R 6 is connected with an end of first capacitor C 1 by the reverser of two series connection, the other end of the 6th resistance is exactly the input of synchronous comparison signal generative circuit 6, the other end ground connection of first capacitor C 1, first capacitor C 1 is exactly the output of synchronous comparison signal generative circuit 6 with the link of reverser.
As shown in figure 11, sample circuit 1 can include voltage stabilizing didoe ZD and the 7th resistance R 7, the negative electrode of voltage stabilizing didoe ZD is exactly the input of sample circuit 1, and the anode of voltage stabilizing didoe ZD is by the 7th resistance R 7 ground connection, and the anode of voltage stabilizing didoe ZD is exactly the output of sample circuit 1.
As shown in figure 12, sample circuit 1 also can be the two ends of the 7th resistance R 7 in Figure 11 and be connected to second capacitor C 2.
As shown in figure 13, sample circuit 1 can also be to include the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the 11 resistance R 11 and integrated operational amplifier ICD, the 8th resistance R 8 is with after the 9th resistance R 9 is connected, one end ground connection, the other end is exactly the input of sample circuit 1, the 8th resistance R 8 follows the input in the same way of integrated operational amplifier ICD to be connected with the link of the 9th resistance R 9, the reverse input end one of integrated operational amplifier ICD is to be connected with the output of integrated operational amplifier ICD by the tenth resistance R 10, the 2nd, by the 11 resistance R 11 ground connection, the output of integrated operational amplifier ICD is exactly the output of sample circuit 1.
As shown in figure 14, it is a kind of integrated circuit figure of the present utility model, now in conjunction with Figure 14 and Figure 15 operation principle of the present utility model is described in further detail:
A with three-phase alternating current is example mutually, it is like this work: alternating current forms the direct current of the pulsation of removing negative half period after semi-controlled bridge rectifier circuit 4 rectifications that the first diode D1 and the first thyristor VT1 are formed, in each cycle, during beginning, because of the output of photoelectrical coupler P ends, the second thyristor VT2, the gate pole of the 3rd thyristor VT3 is because of there being the triggering signal conducting, direct current is through the second thyristor VT2, the 3rd thyristor VT3, the second diode D2 provides triggering signal for the first thyristor VT1, make the first thyristor VT1 conducting, so direct current is directly by the first thyristor VT1, DC output end U
0And directly outwards output behind filter capacitor C filter shape; Meanwhile, direct current is through the 6th resistance R 6, first capacitor C 1 is shaped to the synchronous comparison signal of approximate sawtooth waveforms, the place near the steps comparison signal is sent to the reverse input end of comparator ICA, the voltage-stabiliser tube ZD of sample circuit, the 7th resistance R 7 is taken out the input in the same way that sampled signal is delivered to comparator ICA from DC output end, comparator ICA compares comparison signal and sampled signal, when comparison signal during less than sampled signal, comparator ICA output K1 high potential, deliver to the input of photoelectrical coupler PA, the output conducting of photoelectrical coupler PA, make gate pole and the negative electrode short circuit of the second thyristor VT2, and then make the second thyristor VT2, the 3rd thyristor VT3 ends, cause the gate pole triggerless electric current of the first thyristor VT1 and not conducting, stop outside output DC, with the direct voltage of reduction output, thus the voltage of reduction sampled signal; When comparison signal during greater than sampled signal, comparator ICA output K1 electronegative potential, deliver to the input of photoelectrical coupler PA, the output of photoelectrical coupler PA ends, make the second thyristor VT2, the 3rd thyristor VT3 conducting, cause the gate pole of the first thyristor VT1 to obtain trigger current and conducting, and outside output DC, with the direct voltage of increase output, thus the voltage of increase sampled signal.The overall work situation of circuit is reflected among Figure 15, in Figure 15, in the one-period, with the comparison signal U of the synchronous approximate sawtooth waveforms of alternating current
Jc1With sampled signal U
R7Process is divided into two time periods, and first time period is U
Jc1＜U
R7For the previous period, in this time period, because U
Jc1＜U
R7, therefore, U
K1Be high level, I
VT1Be zero, i.e. the first not conducting of thyristor VT1; Second time period is U
Jc1＞U
R7The back segment time, in this time period, because U
Jc1＞U
R7, U
K1Be low level, I
VT1Be energising, the i.e. first thyristor VT1 conducting.This shows, be U the crucial moment of the first thyristor VT1 conducting
K1Become low level that time, i.e. U by high level
Jc1With U
R7Intersection point, this intersection point are exactly the angle of flow of the first thyristor VT1, and from this constantly, the first thyristor VT1 conducting finishes until the positive half cycle of alternating current.It should be noted that: in each cycle, sampled signal U
R7Float, as sampled signal U
R7During increase, U
Jc1With U
R7Move behind the intersection point, promptly the angle of flow of the first thyristor VT1 lags behind, and the ON time of the first thyristor VT1 shortens; When sampled signal UR7 reduces, Ujc1 and the reach of UR7 intersection point, promptly the angle of flow of the first thyristor VT1 shifts to an earlier date, and the ON time of the first thyristor VT1 is elongated; Circuit of the present utility model comes to this by controlling the ON time length of the first thyristor VT1, realizes the stable output of voltage.
The B phase of three-phase alternating current, the operation principle of C phase are the same, no longer narration.
Based on above-mentioned operation principle, see on the whole, under the acting in conjunction of three-phase alternating current A, B, C three-phase and filter capacitor C, because the control mode of each phase is identical, and A, B, C three-phase alternating current phase difference each other are 120 degree, and sampled signal exists all the time.Entire circuit is by the make-and-break time length of each phase first thyristor VT1 in each cycle, controls DC output end by the stable voltage of preset value output, that is: as DC output end U
0When voltage increases, sampling voltage increases, make comparator ICA, ICB or ICC output K1, K2 or K3 become the moment hysteresis of low level time in each cycle by high level, the angle of flow of the first thyristor VT1 postpones, the ON time in each cycle of the first thyristor VT1 is shortened, and the voltage of DC output end descends and is tending towards default stable voltage; When dc output voltage reduces, sampling voltage reduces, make comparator ICA, ICB or ICC output K1, K2 or K3 become the moment of low level time in each cycle in advance by high level, the angle of flow of the first thyristor VT1 in advance, make the ON time in each cycle of the first thyristor VT1 elongated, the voltage of DC output end rises and also is tending towards default stable voltage.Thereby realize galvanic stable output.
Claims (13)
1. three-phase synchronous rectification manostat, include sample circuit (1) and with DC output end (U
0) and the filter capacitor (C) that connects, it is characterized in that: it also includes rectifying and voltage-stabilizing control circuit (2), each phase (U of three-phase alternating current
A, U
B, U
C) all be connected with the alternating current input of separately rectifying and voltage-stabilizing control circuit (2), it is exactly DC output end (U that the output of each rectifying and voltage-stabilizing control circuit (2) links together
0), the input of sample circuit (1) and DC output end (U
0) connect, its output is connected with the sampled signal input of each rectifying and voltage-stabilizing control circuit (2).
2. three-phase synchronous rectification manostat as claimed in claim 1, it is characterized in that: rectifying and voltage-stabilizing control circuit (2) includes triggering signal control circuit (3), semi-controlled bridge rectifier circuit (4), circuits for triggering (5) and synchronous comparison signal generative circuit (6), the input of semi-controlled bridge rectifier circuit (4), circuits for triggering (5) and synchronous comparison signal generative circuit (6) all links together and receives the input of rectifying and voltage-stabilizing control circuit (2), and the output of semi-controlled bridge rectifier circuit (4) is exactly DC output end (U
0), the output of circuits for triggering (5) is connected with the signal controlling end of semi-controlled bridge rectifier circuit (4), the output of comparison signal generative circuit (6) is connected with the comparison signal input of triggering signal control circuit (3) synchronously, the sampled signal input of triggering signal control circuit (3) is exactly the sampled signal input of rectifying and voltage-stabilizing control circuit (2), and the output of triggering signal control circuit (3) is connected with the triggering signal input of circuits for triggering (5).
3. three-phase synchronous rectification manostat as claimed in claim 2, it is characterized in that: triggering signal control circuit (3) includes comparator (IC) and photoelectrical coupler (P), the in-phase input end of comparator (IC) is exactly the sampled signal input of triggering signal control circuit (3), the inverting input of comparator (IC) is exactly the comparison signal input of triggering signal control circuit (3), the output of comparator (IC) is connected with the input of photoelectrical coupler (P), two outputs that output is exactly triggering signal control circuit (3) of photoelectronic coupler (P).
4. three-phase synchronous rectification manostat as claimed in claim 2, it is characterized in that: semi-controlled bridge rectifier circuit (4) includes first thyristor (VT1) and first diode (D1), the plus earth of first diode (D1), its negative electrode is connected with the anode of first thyristor (VT1), the negative electrode of first thyristor (VT1) is exactly the output of semi-controlled bridge rectifier circuit (4), the anode of first thyristor (VT1) is exactly the input of semi-controlled bridge rectifier circuit (4), and the gate pole of first thyristor (VT1) is exactly the signal controlling end of semi-controlled bridge rectifier circuit (4).
5. three-phase synchronous rectification manostat as claimed in claim 2, it is characterized in that: circuits for triggering (5) include second diode (D2), second thyristor (VT2), first resistance (R1) and second resistance (R2), the anode of second thyristor (VT2) is connected with the gate pole of second thyristor (VT2) by second resistance (R2), the negative electrode of second thyristor (VT2) is connected with the anode of second diode (D2), and the negative electrode of second diode (D2) is by first resistance (R1) and DC output end (U
0) connect, the anode of second thyristor (VT2) is exactly the input of circuits for triggering (5), the negative electrode of second diode (D2) is exactly the output of circuits for triggering (5), and the gate pole of the anode of second diode (D2) and second thyristor (VT2) is exactly two triggering signal inputs of circuits for triggering (5).
6. three-phase synchronous rectification manostat as claimed in claim 2, it is characterized in that: circuits for triggering (5) include second diode (D2), second thyristor (VT2), the 3rd thyristor (VT3), first resistance (R1), second resistance (R2) and the 3rd resistance (R3), the anode of the 3rd thyristor (VT3) is connected with the gate pole of the 3rd thyristor (VT3) by the 3rd resistance (R3), the gate pole of the 3rd thyristor (VT3) is connected with the gate pole of second thyristor (VT2) by second resistance (R2), the negative electrode of the 3rd thyristor (VT3) is connected with the anode of second thyristor (VT2), the negative electrode of second thyristor (VT2) is connected with the anode of second diode (D2), and the negative electrode of second diode (D2) is by first resistance (R1) and DC output end (U
0) connect, the anode of the 3rd thyristor (VT3) is exactly the input of circuits for triggering (5), the negative electrode of second diode (D2) is exactly the output of circuits for triggering (5), and the gate pole of the anode of second diode (D2) and second thyristor (VT2) is exactly two triggering signal inputs of circuits for triggering (5).
7. three-phase synchronous rectification manostat as claimed in claim 2, it is characterized in that: circuits for triggering (5) include second diode (D2), triode (T), first resistance (R1) and the 4th resistance (R4), the collector electrode of triode (T) is connected with the base stage of triode (T) by the 4th resistance (R4), the emitter of triode (T) is connected with the anode of second diode (D2), and the negative electrode of second diode (D2) is by first resistance (R1) and DC output end (U
0) connect, the collector electrode of triode (T) is exactly the input of circuits for triggering (5), the negative electrode of second diode (D2) is exactly the output of circuits for triggering (5), and the base stage of the anode of second diode (D2) and triode (T) is exactly two triggering signal inputs of circuits for triggering (5).
8. three-phase synchronous rectification manostat as claimed in claim 2, it is characterized in that: circuits for triggering (5) include second diode (D2), field-effect transistor (Q), first resistance (R1) and the 5th resistance (R5), the drain electrode of field-effect transistor (Q) is connected with the grid of field-effect transistor (Q) by the 5th resistance (R5), the source electrode of field-effect transistor (Q) is connected with the anode of second diode (D2), and the negative electrode of second diode (D2) is by first resistance (R1) and DC output end (U
0) connect, the drain electrode of field-effect transistor (Q) is exactly the input of circuits for triggering (5), the negative electrode of second diode (D2) is exactly the output of circuits for triggering (5), and the grid of the anode of second diode (D2) and field-effect transistor (Q) is exactly two triggering signal inputs of circuits for triggering (5).
9. three-phase synchronous rectification manostat as claimed in claim 2, it is characterized in that: comparison signal generative circuit (6) includes the 6th resistance (R6) and first electric capacity (C1) synchronously, one end ground connection of first electric capacity (C1), the other end is connected with an end of the 6th resistance (R6), the other end of the 6th resistance (R6) is exactly the input of synchronous comparison signal generative circuit (6), and the 6th resistance (R6) is exactly the output of synchronous comparison signal generative circuit (6) with the link of first electric capacity (C1).
10. three-phase synchronous rectification manostat as claimed in claim 9, it is characterized in that: comparison signal generative circuit (6) also includes the reverser of two series connection synchronously, one end of the 6th resistance (R6) is connected with an end of first electric capacity (C1) by the reverser of two series connection, the other end of the 6th resistance is exactly the input of synchronous comparison signal generative circuit (6), the other end ground connection of first electric capacity (C1), first electric capacity (C1) is exactly the output of synchronous comparison signal generative circuit (6) with the link of reverser.
11. as claim 1,2,3,4,5,6,7,8,9 or 10 described three-phase synchronous rectification manostats, it is characterized in that: sample circuit (1) includes voltage stabilizing didoe (ZD) and the 7th resistance (R7), the negative electrode of voltage stabilizing didoe (ZD) is exactly the input of sample circuit (1), the anode of voltage stabilizing didoe (ZD) is by the 7th resistance (R7) ground connection, and the anode of voltage stabilizing didoe (ZD) is exactly the output of sample circuit (1).
12. three-phase synchronous rectification manostat as claimed in claim 11 is characterized in that: the two ends of the 7th resistance (R7) also are connected to second electric capacity (C2).
13. as claim 1,2,3,4,5,6,7,8,9 or 10 described three-phase synchronous rectification manostats, it is characterized in that: sample circuit (1) includes the 8th resistance (R8), the 9th resistance (R9), the tenth resistance (R10), the 11 resistance (R11) and integrated operational amplifier (ICD), the 8th resistance (R8) is with after the 9th resistance (R9) is connected, one end ground connection, the other end is exactly the input of sample circuit (1), the 8th resistance (R8) follows the input in the same way of integrated operational amplifier (ICD) to be connected with the link of the 9th resistance (R9), the reverse input end one of integrated operational amplifier (ICD) is to be connected by the output of the tenth resistance (R10) with integrated operational amplifier (ICD), the 2nd, by the 11 resistance (R11) ground connection, the output of integrated operational amplifier (ICD) is exactly the output of sample circuit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520010117 CN2852521Y (en) | 2005-10-17 | 2005-10-17 | Three-phase synchronous rectification manostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520010117 CN2852521Y (en) | 2005-10-17 | 2005-10-17 | Three-phase synchronous rectification manostat |
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| Publication Number | Publication Date |
|---|---|
| CN2852521Y true CN2852521Y (en) | 2006-12-27 |
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ID=37586477
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520010117 Expired - Fee Related CN2852521Y (en) | 2005-10-17 | 2005-10-17 | Three-phase synchronous rectification manostat |
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| CN (1) | CN2852521Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595268A (en) * | 2013-11-26 | 2014-02-19 | 中国人民解放军重庆通信学院 | Frequency converter |
| CN105429485A (en) * | 2015-12-17 | 2016-03-23 | 上海发电设备成套设计研究院 | Analog type direct current power supply control circuit |
-
2005
- 2005-10-17 CN CN 200520010117 patent/CN2852521Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595268A (en) * | 2013-11-26 | 2014-02-19 | 中国人民解放军重庆通信学院 | Frequency converter |
| CN105429485A (en) * | 2015-12-17 | 2016-03-23 | 上海发电设备成套设计研究院 | Analog type direct current power supply control circuit |
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