CN205509860U - Many correction transformers combination formula single phase alternating current stabiliser - Google Patents
Many correction transformers combination formula single phase alternating current stabiliser Download PDFInfo
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- CN205509860U CN205509860U CN201520729841.6U CN201520729841U CN205509860U CN 205509860 U CN205509860 U CN 205509860U CN 201520729841 U CN201520729841 U CN 201520729841U CN 205509860 U CN205509860 U CN 205509860U
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Abstract
The utility model relates to a many correction transformers combination formula single phase alternating current stabiliser, connecting the three correction transformer of electric wire netting including the input, connecing the end to power consumption equipment import through a side winding of three transformer after the output is established ties, three transformer secondary side winding end connects to output voltage through 8 bidirectional thyristors and holds. The TR4 transformer of input voltage side provides real - time voltage the detected signal, it detects to exchange the virtual value through 12 high accuracy AD converters, real -time supervision single phase alternating current operating voltage, and the comparison is carried out to the code magnitude that will obtain a data signal and settlement, rethread decoding drive circuit judges according to hardware logic programming regulation that the combination triggers 8 bidirectional thyristors, difference through the bidirectional thyristor switches on, the combination of disconnection, it organizes scalar sum voltage direction to change dropping into of transformer secondary winding, finally reach the different compensation combinations of once surveying the voltage swing, guarantee that stabilization of output is at given voltage range.
Description
Technical field
This utility model belongs to voltage regulator circuit field, a kind of many compensator transformers combined single-phase/three-phase AC voltage stabilizer based on Digital Circuit Control.
Background technology
At present, although electrical network facilities updates quickly, substantially the demand of user is disclosure satisfy that at big and medium-sized cities power supply quality, but in individual other small city and vast rural area, the contradiction rapidly increased due to the old of electrical network facilities and power consumption causes user power utilization quality the most unstable, directly influences indivedual electrical equipment sometimes and can not normally use or bring harm to the use of electric equipment.
At present, manostat present on market, pressure regulator kind is a lot, but is respectively arranged with pluses and minuses, and the specific environment being suitable for also is respectively arranged with and lays particular stress on, and therefore develops and shows unique characteristics, and the manostat that performance is the most superior is the most necessary to improve the user side quality of power supply.
Through retrieval, finding two patent documentations relevant to this patent content, wherein, the Chinese patent of Publication No. CN102881433A provides a kind of transformator with compensative winding, including: five magnetic circuits that five magnetic cores are formed；First magnetic circuit, the second magnetic circuit, the 3rd magnetic circuit, the 4th magnetic circuit and the 5th magnetic circuit are all wound with the first winding, and the first magnetic circuit and the second magnetic circuit are wound with again the second winding；Second magnetic circuit is wound with the tertiary winding, the tertiary winding and the second winding concatenation, and sensing magnetic flux is contrary；Second winding and the first winding are single magnetic circuit winding.It is designed with the first winding on every road magnetic circuit that the present invention provides, first magnetic circuit and the second magnetic circuit arrange the second winding, make not exist between the first winding and the second winding mutual inductance, the second winding concatenation tertiary winding, the first winding is made to independently form a transformator, second winding forms a single transformator together with the tertiary winding, such that it is able to realize input and the output of multiple unlike signal, extends the function of transformator.
The Chinese patent of Publication No. CN103219881A provides a kind of transformer sectional series capacitor compensation circuit, belongs to transformator or field of conversion of electrical energy.Transformator treats that series compensation winding is composed in series by some winding segments, and at least a part of which has a pair intersegmental also string of adjacent winding to have compensation electric capacity；Above-mentioned transformator treats that series compensation winding is transformer primary side or/and transformer secondary.Present invention can apply in all kinds of controlled resonant converter, including the leakage inductance and the magnetizing inductance that compensate non-contact transformer in non-contact resonant converter.
Through contrast, above-mentioned patent and present patent application, in circuit theory and action effect, exist and are clearly distinguished from.
Summary of the invention
The purpose of this utility model is to overcome prior art not enough, it is provided that many compensator transformers combined single-phase/three-phase AC voltage stabilizer based on Digital Circuit Control that a kind of circuit voltage stabilizing adjusting range is wide.
The technical solution adopted in the utility model is:
A kind of many compensator transformers combined single-phase/three-phase AC voltage stabilizer based on Digital Circuit Control, three compensation compensator transformers of electrical network are connected including input, the first side winding series connection of three compensator transformers is to ac voltage input, the secondary side winding of three compensator transformers is connected to output voltage terminal by 8 bidirectional thyristors, on the transformator TR4 of input voltage side, connection has voltage detecting controller, voltage detecting controller and 8 bidirectional thyristors to connect.
And, three-phase AC voltage stabilizer is on the basis of single phase ac manostat, use Modular Structure Design, utilize many compensator transformers combined single-phase AC voltage regulator sub-control three-phase phase voltage that three sets are identical, the input of its voltage and voltage output end use three-phase voltage design, often overlap many compensator transformers combined single-phase AC voltage regulator and are connected on respectively wherein on a circuitry phase.
nullAnd，Described voltage detecting controller includes: data converter、Clock and high 9 A/D change-over circuits、16 circuit-switched data comparators、16 road pulse sequence distributor circuits、8 road output coders、Decoding distribution and drive circuit and No. 8 electrical switch isolation and amplifier drive circuits，The input of data converter connects the transformator of input voltage side，The outfan of data converter connects the input of high 9 A/D change-over circuits、The outfan of high 9 A/D change-over circuits connects 16 road pulse sequence distributor circuits by 16 circuit-switched data comparators，16 road pulse sequence distributor circuit outfans connect decoding distribution and drive circuit by 8 road output coders，Decoding distribution and drive circuit connect No. 8 electrical switch isolation and amplifier drive circuits，No. 8 electrical switch isolation and amplifier drive circuits connect one to one with 8 bidirectional thyristors respectively.
And.Described voltage detecting controller also includes energy-saving control circuit and overcurrent sample circuit.
And, described voltage detecting controller also has a SS (soft start) control circuit.
Good effect of the present utility model and advantage be:
1, many compensator transformers combined single-phase AC voltage regulator based on Digital Circuit Control that this utility model provides, use the voltage regulation way that many compensator transformers combine, there is extreme high reliability and the strongest capacity of resisting disturbance, and compensator transformer power is little, transformer capacity is low, and volume is little, low price, efficiently solve because of the poor harm brought to user of grid supply quality, provide the user reliable and stable supply of electric power.
2, the core observation circuit of many compensator transformers combined single-phase AC voltage regulator based on Digital Circuit Control that this utility model provides is that 12 high-precision a/d converters carry out AC value detection, monitoring single phase ac running voltage in real time, monitoring, controls in real time in real time, and it is high that circuit runs responsiveness, operating rate is fast, the logic control mode of totally digital circuit, overall without singlechip chip, it is not necessary to programming, debugging is simple, easy to use.
3, many compensator transformers combined single-phase AC voltage regulator based on Digital Circuit Control that this utility model provides, single-phase low-power system uses contactless bidirectional thyristor for regulating voltage, three-phase or high-power system can use bidirectional triode thyristor, large-power MOS part or IGBT device according to capacity requirement.Equipment noiseless, the carbon brush abrasion of mechanical pressure regulation existence and mechanical breakdown；Sine wave output half-wave plays tune, and waveform is uninterrupted continuously, and circuit uses zero-cross triggering circuit; pulse absorption and dead zone protection are little to the electromagnetic interference of electrical network in addition; adapting to various loaded work piece, either ohmic load, capacitive load or inductive load, this voltage regulating mode can well adapt to.
4, many compensator transformers combined single-phase AC voltage regulator based on Digital Circuit Control that this utility model provides has soft start function, when starting shooting every time, can start after voltage deducts 171V (or 185V) by input voltage in 0.125 second～6 minutes, points of 8 grades required voltage values being stepped up to 220V.
5, many compensator transformers combined single-phase AC voltage regulator based on Digital Circuit Control that this utility model provides has output overcurrent and restarts function; load faulty for can quickly recover after instantaneous overcurrent can be restarted the most again; after restarting three times; if over current fault yet suffers from; then enter dead protection; no longer carry out restarting, after at this moment needing artificially to fix a breakdown, carry out hand-reset.
6, this utility model Circuits System panel is equipped with multifunction instrument, can show input/output voltage in real time, has overvoltage instruction, under-voltage instruction, overcurrent instruction simultaneously.Meanwhile, the voltage-adjustable control loop of each compensated regulator is equipped with fuse link and the relay protection instruction function of overcurrent.
7, this utility model circuit has light-operated startup and the function of timing energy-saving decompression work, as shown in Figure 3, according to user's requirement, energy-saving control circuit can set and not work daytime, the total head work first half of the night, reducing pressure after midnight work, decompression energy-saving voltage is 171V (or 185V), and this function is particularly well-suited to municipal road lamp illumination.
8, many compensator transformers Combined three phase AC voltage regulator based on Digital Circuit Control that this utility model provides is directed to three phase mains circuit, it is changed only needs the compensator transformer combined single-phase AC voltage regulator by this utility model identical for three sets provides to be arranged on correspondingly in every circuitry phase, the every of three phase mains is the most individually adjusted, and has good three-phase self-balance ability.
9, the circuit stability of the circuit design in many compensator transformers combined single-phase AC voltage regulator based on Digital Circuit Control that this utility model provides is good, on-the-spot power supply is complimentary fashion, when voltage-stabilizing system device fails, when needing to carry out regular maintenance or maintenance, by switching, can ensure that circuit normal power supply, do not affect user's normal electricity consumption and be more suitable for being widely popularized.
This utility model advantage and good effect be:
Load system in this test system is automatically controlled by a computer and tested electromotor is applied resistive, perceptual, capacitive load, also can carry out single-phase imbalance, short-circuit test, the test system detection every electrical parameter of electromotor, automatically test data is recorded, generate test report, integration is good, and accuracy rate is high.
This test system can simulate the operating mode under the various rotating speed of double current generator and acceleration-deceleration and different loads, carry out the test of stable state and transient state, there is the functions such as wrong parameter input warning, overload-alarm, overload unloads automatically, hands is changed automatically, stop in emergency.Tested electromotor charge and discharge operations is convenient, maintainable high.
Accompanying drawing explanation
Fig. 1 is many compensator transformers combined single-phase AC voltage regulator main circuit schematic diagram based on Digital Circuit Control of utility model；
Fig. 2 is many compensator transformers Combined three phase AC voltage regulator main circuit schematic diagram based on Digital Circuit Control of utility model；
Fig. 3 is many compensator transformers combined single-phase based on Digital Circuit Control/three-phase AC voltage stabilizer control principle block diagram of the present utility model.
Detailed description of the invention
Below by accompanying drawing, the utility model is described in further detail in conjunction with specific embodiments, and following example are illustrative, is not determinate, it is impossible to limits protection domain of the present utility model with this.
nullA kind of many compensator transformers combined single-phase/three-phase AC voltage stabilizer based on Digital Circuit Control，Wherein Fig. 1 embodies many compensator transformers based on Digital Circuit Control combined single-phase AC voltage regulator，It includes that input connects three compensation compensator transformer TR1 of electrical network、TR2、TR3，Three compensator transformer TR1、TR2、The first side winding series connection of TR3 is to ac voltage input，Three compensator transformer TR1、TR2、The secondary side winding of TR3 is connected to output voltage terminal by 8 bidirectional thyristors (S1～S8)，On the transformator TR4 of input voltage side, connection has voltage detecting controller，Voltage detecting controller and 8 bidirectional thyristors connect，Transformator TR4 provides real-time voltage detection signal to voltage detecting controller，By calculating、Relatively trigger 8 bidirectional thyristors，By the different conducting combinations of bidirectional thyristor，Change three compensator transformer secondary side voltage directions，Different compensation combination is carried out to once surveying voltage swing，Ensure output voltage stabilization.
AC value detection is carried out by 12 high-precision a/d converters, timely monitor single phase ac running voltage, and high 9 position digital signals obtained are compared with setting value, carry out logical analysis 8 tunnel logic control output signal, trigger 8 bidirectional thyristors by decoder driver circuit, by the different conducting combinations of bidirectional thyristor, change three compensator transformer secondary side voltage directions, different compensation combination is carried out, it is ensured that output voltage stabilization to once surveying voltage swing.
QF1 and QF2 is input/output automatic air-break switch, for overcurrent protection；TR1, TR2 and TR3 are voltage compensation transformator, are used for adjustment output voltage；TR4 is voltage detecting transformer, provides real-time grid voltage for control circuit；Control DC source and for control circuit and trigger drive circuit offer DC source；RV1 and RV2 varistor, is used for the system that eliminates surge voltage that may be present, system is carried out overvoltage protection；KM is catalyst, and it is by system, control circuit control, for supplying to have a power failure to load.
Fig. 2 embodies many compensator transformers based on Digital Circuit Control Combined three phase AC voltage regulator, three-phase AC voltage stabilizer is on the basis of single phase ac manostat, use Modular Structure Design, utilize many compensator transformers combined single-phase AC voltage regulator sub-control three-phase phase voltage that three sets are identical, the input of its voltage and voltage output end use three-phase voltage design, often overlap many compensator transformers combined single-phase AC voltage regulator and be connected on wherein on a circuitry phase respectively, this single-phase independent working method beneficially three phase supply and comparing the duty of balance with the balancing work of electric loading.Threephase load electric current is detected by three set overcurrent sampling detection modules the most in real time; analyzing and processing in real time; by overcurrent protection with restart circuit co-controlling output contactor, when any phase load generation heavy overload even short circuit accident, can carry out protect de-energizing actions.Its operation principle is basically identical with single-phase voltage stabilizer.
nullMany compensator transformers combined single-phase/three-phase AC voltage stabilizer control principle block diagram is as shown in Figure 3，Voltage detecting controller includes: data converter、Clock and 12 high-precision A/D change-over circuits (take high 9 codings，Careful design encodes，Be allowed to meet ± 5V or ± 7V adjusting range require)、16 circuit-switched data comparators、16 road pulse sequence distributor circuits、8 road output coders、Decoding distribution and drive circuit and No. 8 electrical switch isolation and amplifier drive circuits，The input of data converter connects the transformator TR4 of input voltage side，The outfan of data converter connects the input of 12 high-precision A/D change-over circuits、The outfan of 12 high-precision A/D change-over circuits connects 16 road pulse sequence distributor circuits by 16 circuit-switched data comparators，16 road pulse sequence distributor circuit outfans connect decoding distribution and drive circuit by 8 road output coders，Decoding distribution and drive circuit connect No. 8 electrical switch isolation and amplifier drive circuits，No. 8 electrical switch isolation and amplifier drive circuits connect one to one with 8 bidirectional thyristors respectively.
Its groundwork process is that data conversion sample circuit is sampled by transformator TR4, it is supplied to clock and 12 high-precision A/D change-over circuits, high nine position digital signals of acquisition A/D converter are sent into 16 circuit-switched data comparators and are compared, obtain 16 road logical signals to deliver to 16 road pulse sequence distributor circuits and process, deliver to 8 road output coder codings again and obtain 8 tunnel control signals, the decoded distribution of this control signal and drive circuit are supplied to eight bidirectional thyristors of S1～S8, control TR1～TR3 tri-by zero trigger mode and compensate the conducting combination of pressure-changing secondary side winding, reach stable with control output voltage.
Voltage detecting controller also includes energy-saving control circuit and overcurrent sample circuit, and its work process teacher is by gathering output voltage and output current signal, it is provided that to overcurrent protection with restart circuit.Having two effects to overcurrent protection with restarting circuit, one is automatically again restarting after instantaneous overcurrent, after restarting three times, if over current fault yet suffers from, then enters dead protection, no longer carries out restarting, carry out hand-reset after at this moment needing artificially to fix a breakdown；Two is can to control output voltage 170V or 185V according to the power conservation requirement that user is special.
Voltage detecting controller also has a SS (soft start) control circuit, the function of its SS (soft start) control circuit is, when starting shooting every time, can (user can be from Row sum-equal matrix) start after voltage deducts 49V (or other setting values) by input voltage in 30 seconds～6 minutes, points of 8 grades required voltage values being stepped up to 220V.
Operation principle of the present utility model is:
When input ac voltage is too high, bidirectional thyristor electrical switch S1 and S4 zero cross fired can be turned on, at this moment compensator transformer secondary side polarity of voltage is left positive right negative, because Same Name of Ends polarity is identical, therefore it is also left positive right negative for compensating voltage U1 polarity, now, output voltage Uo=Ui-U1, carry out drop compensation.
And when input ac voltage is too low, bidirectional thyristor electrical switch S3 and S2 zero cross fired are turned on, at this moment compensator transformer secondary side polarity of voltage is that the right side is just being born in a left side, it is same because Same Name of Ends polarity is identical, therefore compensating voltage U1 polarity is also that the right side is just being born in a left side, now, output voltage Uo=Ui+U1, carry out boosting and compensate.
So, by the different conducting combinations of electrical switch, output voltage can be regulated and controled, when input voltage changes, by the voltage compensation of compensator transformer, it is ensured that output voltage stabilization is within scope of design.
If input voltage is when about 220V; voltage is under normal circumstances; without carrying out voltage compensation; at this moment; electrical switch is controlled for protection, can be by S1, S3 or S2, S4 triggering and conducting, by the short circuit of compensator transformer secondary side voltage; to prevent secondary side overvoltage because secondary side current is the least, do not result in transformator and electrical switch damages.
Additionally, when input voltage is at 220V ± 3.5V, at this moment transformator does current transformer use, and IGCT S1, S3 conducting (or S2, S4 conducting), at this moment compensating voltage is zero.
The problem of " leading directly to " is caused to damage IGCT in order to avoid two serial connection controllable silicons of underarm upper during controlled silicon conducting simultaneously turn on, circuit is provided with the decision circuitry preventing underarm from simultaneously turning on and reasonable time delayed " dead band " circuit, it is ensured that two serial connection controllable silicons at any time going up underarm are conductings with only one.
In order to avoid " dead band " period transformator is in instantaneous " open circuit " phenomenon, transformator be have employed resistance-capacitance absorption protective measure.
In the present embodiment, separately designing three compensator transformers TR1, TR2 and TR3 into compensating two kinds of compound modes of voltage 7-14-28V and 5-10-20V, its input voltage and zero cross fired element control conducting table and see that the input voltage of many compensator transformers based on Digital Circuit Control combined single-phase AC voltage regulator compensator transformer group controls conducting table with zero cross fired element.
The TR4 transformator of input voltage side provides real-time voltage detection signal, AC value detection is carried out by 12 high-precision a/d converters, monitoring single phase ac running voltage in real time, and high 9 position digital signals obtained are compared with setting value, carry out logical analysis 8 tunnel logic control output signal, 8 bidirectional thyristors are triggered by decoder driver circuit, by the different conducting combinations of bidirectional thyristor, change three compensator transformer secondary side voltage directions, reach the compensation once surveying voltage.Outfan has control circuit DC power supplier, and each module in AC voltage regulator is powered by power module.
The input voltage of many compensator transformers combined single-phase AC voltage regulator compensator transformer group based on Digital Circuit Control and zero cross fired element control conducting table
Although disclosing embodiment of the present utility model and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: without departing from this utility model and spirit and scope of the appended claims, various replacements, to change and modifications be all possible, therefore, scope of the present utility model is not limited to embodiment and accompanying drawing disclosure of that.
Claims (4)
1. compensator transformer combined single-phase AC voltage regulator more than a kind, it is characterized in that: include that input connects three compensation compensator transformers of electrical network, the first side winding series connection of three compensator transformers is to ac voltage input, the secondary side winding of three compensator transformers is connected to output voltage terminal by 8 bidirectional thyristors, on the transformator TR4 of input voltage side, connection has voltage detecting controller, voltage detecting controller and 8 bidirectional thyristors to connect.
nullMany compensator transformers combined single-phase AC voltage regulator the most according to claim 1，It is characterized in that: described voltage detecting controller includes: data converter、Clock and high 9 A/D change-over circuits、16 circuit-switched data comparators、16 road pulse sequence distributor circuits、8 road output coders、Decoding distribution and drive circuit and No. 8 electrical switch isolation and amplifier drive circuits，The input of data converter connects the transformator of input voltage side，The outfan of data converter connects the input of high 9 A/D change-over circuits、The outfan of high 9 A/D change-over circuits connects 16 road pulse sequence distributor circuits by 16 circuit-switched data comparators，16 road pulse sequence distributor circuit outfans connect decoding distribution and drive circuit by 8 road output coders，Decoding distribution and drive circuit connect No. 8 electrical switch isolation and amplifier drive circuits，No. 8 electrical switch isolation and amplifier drive circuits connect one to one with 8 bidirectional thyristors respectively.
Many compensator transformers combined single-phase AC voltage regulator the most according to claim 2, it is characterised in that: described voltage detecting controller also includes energy-saving control circuit and overcurrent sample circuit.
Many compensator transformers combined single-phase AC voltage regulator the most according to claim 3, it is characterised in that: described voltage detecting controller also has a SS (soft start) control circuit.
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| CN201520729841.6U CN205509860U (en) | 2015-09-21 | 2015-09-21 | Many correction transformers combination formula single phase alternating current stabiliser |
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| CN201520729841.6U CN205509860U (en) | 2015-09-21 | 2015-09-21 | Many correction transformers combination formula single phase alternating current stabiliser |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899025A (en) * | 2017-04-26 | 2017-06-27 | 武汉国想电力科技股份有限公司 | A kind of comprehensive compensation type alternating current steady voltage plug |
| CN108964065A (en) * | 2018-07-18 | 2018-12-07 | 河海大学 | Segmented rapid pressure adjusting method and system based on thyristor |
| CN109358680A (en) * | 2018-11-15 | 2019-02-19 | 湖南工业大学 | Three-phase ac voltage stabilizer |
| CN109460100A (en) * | 2018-11-15 | 2019-03-12 | 湖南工业大学 | AC voltage-stabilizing controller |
| CN113489021A (en) * | 2021-07-20 | 2021-10-08 | 张正平 | Economical alternating current voltage stabilizing device |
-
2015
- 2015-09-21 CN CN201520729841.6U patent/CN205509860U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899025A (en) * | 2017-04-26 | 2017-06-27 | 武汉国想电力科技股份有限公司 | A kind of comprehensive compensation type alternating current steady voltage plug |
| CN108964065A (en) * | 2018-07-18 | 2018-12-07 | 河海大学 | Segmented rapid pressure adjusting method and system based on thyristor |
| CN108964065B (en) * | 2018-07-18 | 2021-09-17 | 河海大学 | Sectional type rapid voltage regulation method and system based on thyristor SCR |
| CN109358680A (en) * | 2018-11-15 | 2019-02-19 | 湖南工业大学 | Three-phase ac voltage stabilizer |
| CN109460100A (en) * | 2018-11-15 | 2019-03-12 | 湖南工业大学 | AC voltage-stabilizing controller |
| CN109460100B (en) * | 2018-11-15 | 2020-10-09 | 湖南工业大学 | AC voltage-stabilizing controller |
| CN113489021A (en) * | 2021-07-20 | 2021-10-08 | 张正平 | Economical alternating current voltage stabilizing device |
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