CN203720692U - Compensation circuit for 380 V high-capacity stabilized voltage supply - Google Patents
Compensation circuit for 380 V high-capacity stabilized voltage supply Download PDFInfo
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- CN203720692U CN203720692U CN201320789939.1U CN201320789939U CN203720692U CN 203720692 U CN203720692 U CN 203720692U CN 201320789939 U CN201320789939 U CN 201320789939U CN 203720692 U CN203720692 U CN 203720692U
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 16
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Abstract
The utility model discloses a compensation circuit for a 380 V high-capacity stabilized voltage supply. The compensation circuit comprises two sampling and control circuits, a motor, a carbon brush, a compensation transformer and a voltage regulation transformer, wherein the output ends of the two sampling and control circuits are electrically connected with the motor through a conversion switch; the carbon brush is connected with the motor, and arranged on winding coils of the compensation transformer and the voltage regulation transformer. The phenomenon of electricity obstacle caused by a fact that a voltage stabilizer is not put into operation in time due to damage to the circuit board of a single control system is avoided; the power supplying quality is improved.
Description
Technical field
The utility model relates to electricity field, particularly, relates to a kind of compensating circuit for the large capacity stabilized voltage supply of 380V.
Background technology
Stabilized voltage supply (being commonly called as voltage stabilizer), a kind of feed circuit or the power-supply unit that can automatically adjust output voltage, its effect is by the large fluctuation supply voltage with not meeting the equipment requirements such as machinery, apparatus, instrument, be stabilized in its range of set value, various circuit or electrical equipment can normally be worked under rated operational voltage.Having of the large-scale power of stabilized voltage supply: tens KW, to several thousand KW, are to supply with the working powers such as Large Machining Center, Medical Devices, printing equipment, commercial production, agricultural irrigation, constructing tunnel, transportation and energy field, large-scale experiment equipment.Having of mini power: several watts to several kilowatts is to provide high-quality power supply for small-size laboratory, office equipment or household appliances.Past stabilized voltage supply operation logic is all generally by cpu circuit control axis, compensator transformer, the compositions such as pressure regulator.High-quality large and small power stabilized voltage supply now, adopts motor to drag the method burning voltage of carbon brush mostly, and this voltage regulation way is to electric equipment, and the spark of generation disturbs very little, and the precision of voltage regulation is relatively high.Can provide precisely, programmable current restriction and diagnostic function.Measuring in the market large, wide alternating current steady voltage plug circuit structure first and be miniwatt self coupling (no-load voltage ratio) adjusting type utilizes electronic circuit and micro servo motor to drive carbon brush as Fig. 1, on the winding sliding surface of autotransformer, move, change the ratio of output to input voltage, thereby realize the automatic adjustment of output voltage and stablize.Be commonly called as full-automatic alternating current stabilized voltage supply.
At present; sampling generally adopts monolithic electronic control board with control circuit; regulate with driven by motor carbon brush component; the control panel of this electric circuit constitute uses the sampling of Average True effective value; utilize imported from America microprocessor central control system; can realize normal voltage and regulate and set, there is overvoltage, under-voltage, the functions such as long and short time delay output of protecting, send a telegram here.
But; equipment in real work, because the high and low fluctuation of line voltage is frequent, the reasons such as load limit starting; cause electric current large; overcurrent overheat turn-offs, and power consumption suddenly increases and burns out electronic control board, often can make stabilized voltage supply carry out protectiveness and cut off the electricity supply; after fault occurs; often can not be repaired in time and be changed again, can force terminator incision civil power directly to move, make stabilized power supply device exit voltage-stabilizing system operation.China is since reform and opening-up, greatly develop industrial enterprise, the frequency conversion equipment that some are conventional, various AC and DC converting means, static converter etc. in speed change gear, rectifying installation, static converter, silicon rectifying equipment, electrolysis installation, coreless induction furnace, intermediate frequency furnace, electric arc furnaces, large-scale cold rolling equipment, thyristor system, SCR control system, gas electric light source equipment, factory.When these equipment are taken fundamental current to electrical network, also produce low order or higher harmonic current and inject partial electric grid system, thereby make the harmonic current of this local power net occur suddenly big or suddenly small, flickering phenomenon, the quick variation phenomenon in frequency and phasing degree, appearance moment low-voltage or high voltage, the phenomenons such as three-phase voltage jump is asymmetric, in electrical network, can produce very large center line line current, cause the neutral line current of substation transformer even to exceed phase line current value, cause the dangerous operation of consumer and the quick flickering of voltage.In the time that power-factor capacitor group in parallel drops into, just can, because of the harmonic wave capacitive reactance of condenser for power factor improvement group, equate with coefficient Equivalent Harmonic induction reactance, and cause resonance.Make harmonic radiation and conduction, spike, surge current, voltage stack etc. are serious amplifies.Because above-mentioned phenomenon exists, once stabilized power supply device exits voltage-stabilizing system operation, pollute to local power net system, also can use electric unit to cause unnecessary loss.Ultimate solution is from voltage stabilizer manufacturer, again makes a new electronic control board, issues by electric unit, and then it is open-minded to dispatch officers to on-site install debugging by producer, so just must expend the regular hour, use electric unit normally not produce, enlargement loss.
Utility model content
The purpose of this utility model is, for the problems referred to above, a kind of compensating circuit for the large capacity stabilized voltage supply of 380V is proposed, prevent monolithic control system circuit board damage to realize, cause voltage stabilizer not put into operation in time and cause electricity consumption obstacle, and improving the advantage of power supply quality.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of compensating circuit for the large capacity stabilized voltage supply of 380V, comprise two samplings and control circuit, motor, carbon brush, compensator transformer and adjustable transformer, described two samplings are electrically connected by switch and motor with the output terminal of control circuit, described carbon brush and motor link together, and described carbon brush is arranged on the winding coil of compensator transformer and adjustable transformer.
According to preferred embodiment of the present utility model, described sampling and control circuit comprise the first rectifier bridge, the second rectifier bridge, transport and placing device A1, transport and placing device A2, transport and placing device A3 and transport and placing device A4, node on described the first rectifier bridge and the second rectifier bridge between diode is respectively node a, node b, node c and node d, adjustable resistance R3 successively connects between the node c of described the first rectifier bridge and the in-phase input end of transport and placing device A3, resistance R 4, adjustable resistance R7 and resistance R 8, resistance in series R5 between the in-phase input end of described transport and placing device A3 and output terminal, resistance in series R16 and resistance R 17 successively between the node c of described the first rectifier bridge and the inverting input of transport and placing device A4, the in-phase input end series connection of the inverting input of described transport and placing device A3 and transport and placing device A4, the output terminal of described transport and placing device A3 and transport and placing device A4 output terminal respectively with the first are connected with two input ends of door, described first with door output terminal and resistance R 10, capacitor C 4 ground connection of connecting, the node c of described the first rectifier bridge and the node a of the second rectifier bridge series connection, resistance in series R20 between the node d of described the second rectifier bridge and the in-phase input end of transport and placing device A1, and the in-phase input end of this transport and placing device A1 ground connection of connecting with capacitor C 5, the output terminal of described transport and placing device A1 and second and door, resistance R 25 and diode D6 series connection ground connection, the plus earth of described diode D6, resistance in series R21 successively between the node c of the inverting input of described transport and placing device A1 and the first rectifier bridge, resistance R 12, resistance R 6 and adjustable resistance R3, resistance in series R22 and adjustable resistance R23 successively between the inverting input of the in-phase input end of described transport and placing device A1 and transport and placing device A2, the in-phase input end of described transport and placing device A2 is connected with the in-phase input end of transport and placing device A1, the output terminal of described transport and placing device A2 and the 3rd with door, resistance R 24 and diode D7 series connection ground connection, the plus earth of this diode D7.
The technical solution of the utility model has following beneficial effect:
The technical solution of the utility model, by two samplings and control circuit are set, exist by switch, under the state of charging operation, switch arbitrarily, switching moment now, regulated power supply system is worked as usual incessantly, make central control system circuit in long-play by switching, obtain effectively cooling and take off.Reach and prevent monolithic control system circuit board damage, cause voltage stabilizer not put into operation in time and cause electricity consumption obstacle, and improve the object of power supply quality.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the theory diagram of existing miniwatt self coupling type circuit;
Fig. 2 is the compensating circuit theory diagram for the large capacity stabilized voltage supply of 380V described in the utility model embodiment;
Fig. 3 is the high-power offset-type stabilized voltage supply theory diagram for the large capacity stabilized voltage supply of 380V described in the utility model embodiment;
Fig. 4 is the sampling for the large capacity stabilized voltage supply of 380V and the control circuit principle frame described in the utility model embodiment;
Fig. 5 is the sampling for the large capacity stabilized voltage supply of 380V described in the utility model embodiment and the electronic circuitry of control circuit.
By reference to the accompanying drawings, in the utility model embodiment, Reference numeral is as follows:
1-skin; 2-internal layer; 3-carbon brush; 4-motor; 5-turns round sub-switch; 6-the first rectifier bridge; 7-the second rectifier bridge; 8-first and door; 9-second and door; 10-the 3rd and door.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
As shown in Figure 2, a kind of compensating circuit for the large capacity stabilized voltage supply of 380V, comprise two samplings and control circuit, motor, carbon brush, compensator transformer and adjustable transformer, two samplings are electrically connected by switch and motor with the output terminal of control circuit, carbon brush and motor link together, and carbon brush is arranged on the winding coil of compensator transformer and adjustable transformer.
Wherein, as shown in Figure 5, sampling comprises the first rectifier bridge with control circuit, the second rectifier bridge, transport and placing device A1, transport and placing device A2, transport and placing device A3 and transport and placing device A4, node on the first rectifier bridge and the second rectifier bridge between diode is respectively node a, node b, node c and node d, adjustable resistance R3 successively connects between the node c of the first rectifier bridge and the in-phase input end of transport and placing device A3, resistance R 4, adjustable resistance R7 and resistance R 8, resistance in series R5 between the in-phase input end of transport and placing device A3 and output terminal, resistance in series R16 and resistance R 17 successively between the node c of the first rectifier bridge and the inverting input of transport and placing device A4, the in-phase input end series connection of the inverting input of transport and placing device A3 and transport and placing device A4, the output terminal of transport and placing device A3 and transport and placing device A4 output terminal respectively with the first are connected with two input ends of door, first with door output terminal and resistance R 10, capacitor C 4 ground connection of connecting, the node c of the first rectifier bridge and the node a of the second rectifier bridge series connection, resistance in series R20 between the node d of the second rectifier bridge and the in-phase input end of transport and placing device A1, and the in-phase input end of this transport and placing device A1 ground connection of connecting with capacitor C 5, the output terminal of transport and placing device A1 and second and door, resistance R 25 and diode D6 series connection ground connection, the plus earth of diode D6, resistance in series R21 successively between the node c of the inverting input of transport and placing device A1 and the first rectifier bridge, resistance R 12, resistance R 6 and adjustable resistance R3, resistance in series R22 and adjustable resistance R23 successively between the inverting input of the in-phase input end of transport and placing device A1 and transport and placing device A2, the in-phase input end of transport and placing device A2 is connected with the in-phase input end of transport and placing device A1, the output terminal of transport and placing device A2 and the 3rd with door, resistance R 24 and diode D7 series connection ground connection, the plus earth of this diode D7.
As shown in Figure 2, be to utilize electronic circuit and micro servo motor to drive carbon brush, on the winding sliding surface of autotransformer, move, change the ratio of output to input voltage, thereby realize the automatic adjustment of output voltage and stablize.Be commonly called as full-automatic alternating current stabilized voltage supply; Wherein, there are 2 transformers, one is compensator transformer, one is adjustable transformer, be all to utilize electronic circuit and micro servo motor to drive carbon brush to move, by changing carbon brush and tap, thereby the relative position of slidding carbon brush changes polarity and the size of the elementary induced voltage of compensator transformer, reach and supply or offset input voltage, the object of regulated output voltage.Because the type structure power can do more, so be commonly called as into high-power voltage stabilizer, as Fig. 3.
The sub-switch of turning round in Fig. 4 is switch.
Technical solutions of the utility model adopt double control system, and stabilized voltage supply operation circuit is carried out to two-way control, and zero switch application.In the time of production stabilized voltage supply, just reserve double circuit type control center, control system and main operational system no longer same (A plate, B plate), control change-over switch and be located at the below of master-control room console panel, under the state of charging operation, (left and right) switches arbitrarily, switching moment now, regulated power supply system is worked as usual incessantly, make central control system circuit in long-play by switching, obtain effectively cooling and take off.After improving, lot of experiments operation, confirms its Performance And Reliability, makes improve 5 to 8 times the serviceable life of central control system circuit board, meets the overall performance requirement of alternating current steady voltage plug product completely.
Technical solutions of the utility model design is short and sweet, multiple functional, easy to operate, and a kind of simple and practical electric power voltage-stabilizer plant maintenance switching condition is provided, thereby guarantee stabilized voltage supply central control system part can normally be worked under all rigor condition.
Technical solutions of the utility model principle of work is as follows:
Control power control circuit plate circuit power by switch, A, two power control circuit plate circuit of B are Parallel Control, and any one power control circuit plate power supply all can be controlled mu balanced circuit later, and instant cut-off phenomenon can not occur.
If when a block power supply control circuit board breaks down, can move and turn round sub-switch, this power control circuit plate power supply disconnects, and an other block power supply control circuit board comes into operation.Be control circuit power supply due to what switch, voltage stabilizer major loop Switching Power Supply is not to be subject to the control of power control circuit plate power supply, and therefore main circuit power is unaffected, switches thereby realize zero disconnection fault.
During the trouble-free long-time running of stabilized voltage supply, also can switch arbitrarily adjustment, allow two block power supply control circuit board alternations, thereby stretched and relaxed, control axis part is taked to limit operation, limit maintenance, the serviceable life of improving control axis wiring board, the life-span of namely having improved stabilized voltage supply complete machine.
Technical solutions of the utility model are applicable to stabilized voltage supply and run without interruption throughout the year, are particularly useful for having inconvenient traffic away from down town, and the workplace of the above large-scale stabilized power supply device of the high-power 500KVA of 380V/220V.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. the compensating circuit for the large capacity stabilized voltage supply of 380V, it is characterized in that, comprise two samplings and control circuit, motor, carbon brush, compensator transformer and adjustable transformer, described two samplings are electrically connected by switch and motor with the output terminal of control circuit, described carbon brush and motor link together, and described carbon brush is arranged on the winding coil of compensator transformer and adjustable transformer.
2. the compensating circuit for the large capacity stabilized voltage supply of 380V according to claim 1, it is characterized in that, described sampling and control circuit comprise the first rectifier bridge, the second rectifier bridge, transport and placing device A1, transport and placing device A2, transport and placing device A3 and transport and placing device A4, node on described the first rectifier bridge and the second rectifier bridge between diode is respectively node a, node b, node c and node d, adjustable resistance R3 successively connects between the node c of described the first rectifier bridge and the in-phase input end of transport and placing device A3, resistance R 4, adjustable resistance R7 and resistance R 8, resistance in series R5 between the in-phase input end of described transport and placing device A3 and output terminal, resistance in series R16 and resistance R 17 successively between the node c of described the first rectifier bridge and the inverting input of transport and placing device A4, the in-phase input end series connection of the inverting input of described transport and placing device A3 and transport and placing device A4, the output terminal of described transport and placing device A3 and transport and placing device A4 output terminal respectively with the first are connected with two input ends of door, described first with door output terminal and resistance R 10, capacitor C 4 ground connection of connecting, the node c of described the first rectifier bridge and the node a of the second rectifier bridge series connection, resistance in series R20 between the node d of described the second rectifier bridge and the in-phase input end of transport and placing device A1, and the in-phase input end of this transport and placing device A1 ground connection of connecting with capacitor C 5, the output terminal of described transport and placing device A1 and second and door, resistance R 25 and diode D6 series connection ground connection, the plus earth of described diode D6, resistance in series R21 successively between the node c of the inverting input of described transport and placing device A1 and the first rectifier bridge, resistance R 12, resistance R 6 and adjustable resistance R3, resistance in series R22 and adjustable resistance R23 successively between the inverting input of the in-phase input end of described transport and placing device A1 and transport and placing device A2, the in-phase input end of described transport and placing device A2 is connected with the in-phase input end of transport and placing device A1, the output terminal of described transport and placing device A2 and the 3rd with door, resistance R 24 and diode D7 series connection ground connection, the plus earth of this diode D7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320789939.1U CN203720692U (en) | 2013-12-03 | 2013-12-03 | Compensation circuit for 380 V high-capacity stabilized voltage supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320789939.1U CN203720692U (en) | 2013-12-03 | 2013-12-03 | Compensation circuit for 380 V high-capacity stabilized voltage supply |
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| CN203720692U true CN203720692U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320789939.1U Expired - Fee Related CN203720692U (en) | 2013-12-03 | 2013-12-03 | Compensation circuit for 380 V high-capacity stabilized voltage supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470966A (en) * | 2015-11-28 | 2016-04-06 | 佛山市能建电力工程有限公司 | Intelligent voltage stepless bidirectional adjustment method and device |
| CN106556426A (en) * | 2016-11-21 | 2017-04-05 | 国网四川省电力公司巴中供电公司 | A kind of highly sensitive sample circuit of electric power monitoring |
-
2013
- 2013-12-03 CN CN201320789939.1U patent/CN203720692U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470966A (en) * | 2015-11-28 | 2016-04-06 | 佛山市能建电力工程有限公司 | Intelligent voltage stepless bidirectional adjustment method and device |
| CN106556426A (en) * | 2016-11-21 | 2017-04-05 | 国网四川省电力公司巴中供电公司 | A kind of highly sensitive sample circuit of electric power monitoring |
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Granted publication date: 20140716 Termination date: 20181203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |