CN208226892U - A kind of small-sized variable-frequency electric power voltage-stabilizer - Google Patents
A kind of small-sized variable-frequency electric power voltage-stabilizer Download PDFInfo
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- CN208226892U CN208226892U CN201820822205.1U CN201820822205U CN208226892U CN 208226892 U CN208226892 U CN 208226892U CN 201820822205 U CN201820822205 U CN 201820822205U CN 208226892 U CN208226892 U CN 208226892U
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Abstract
The utility model provides a kind of small-sized variable-frequency electric power voltage-stabilizer, including frequency conversion booster circuit, drive control circuit, decompression voltage regulator, sampling feedback circuit, wherein: frequency conversion booster circuit boosts direct current frequency conversion, it is converted into high-frequency high-voltage electricity, frequency reducing pressure stabilizing after high-voltage electricity is depressured by decompression voltage regulator, sampling feedback circuit is used to monitor the electric energy of decompression voltage regulator output, and output pulsation is fed back into drive control circuit, drive control circuit is used to control the output of frequency conversion booster circuit, to realize that stablizing for alternating current exports, the output end of drive control circuit is connect with the input terminal of frequency conversion booster circuit.The utility model controls output voltage by way of Switching Power Supply, improves transfer efficiency, and efficiency can reach 95%.
Description
Technical field
The utility model relates to frequency conversion electric power voltage stabilizer field more particularly to a kind of small-sized variable-frequency electric power voltage-stabilizers.
Background technique
As society burns the wind, electrical equipment is growing day by day.The equipment that unstable voltage can make cause mortal injury or
Malfunction.Unstable power grid is powered to electrical equipment, especially requires voltage stringent high and new technology and precision equipment, still
Such as a not timing bomb.But aging and the lagging in development of electrical power distribution facility, and design the reasons such as bad and electricity shortage
The too low of terminal temperature difference voltage is caused, and then frequent voltage is higher by the end of a thread user.Dirt along with a large amount of external devices to power grid
Dye, such as powerful nonlinear load facility switching act, and keep our power supply environment very unstable.So needing to stablize
The occasion of power supply keeps the electric power voltage-stabilizer of output voltage stabilization essential, and laboratory etc. has the occasion of precision instrument more to require
There is reliable high-precision voltage-stablizer.
The small-sized voltage-stablizer of high quality now mostly uses greatly the method burning voltage of motor drag carbon brush.This voltage-stablizer
It is made of regulating circuit, control circuit and servo motor etc..When input voltage or load variation, control circuit is sampled,
Compare, amplify, then drives servo motor rotation, make the position change of pressure regulator carbon brush, by adjust automatically coil ratio,
To keep the stabilization of output voltage.The interference very little precision of voltage regulation that this voltage-stablizer generates electrical equipment is relatively high.But
This voltage-stablizer is due to using Industrial Frequency Transformer, so not only heavy, weight is generally in more than ten kg to tens kg, and efficiency is not
Height, it is good also to can only achieve 90%；Change output voltage by adjusting carbon brush position, one side reaction speed is slow, general anti-
More than 50ms between seasonable, on the other hand, after long operational time, the abrasion of carbon brush will lead to the stability and reliability of pressure regulation.Separately
Passing through the pressure regulation of transformer coupled mode outside, it is desirable that input voltage range is relatively narrow, and general only ± 20%, and reality is often
Super to go beyond the scope, under this abnormal conditions, voltage-stablizer can be protected because of under-voltage or over-voltage, to cause to power off, to equipment
Or life impacts.
In view of this, it is necessary to small-sized voltage-stablizer in the prior art be improved, to solve the above problems.
Summary of the invention
The purpose of this utility model is to provide a kind of small-sized variable-frequency electric power voltage-stabilizers, by way of Switching Power Supply come
Output voltage is controlled, improves transfer efficiency, efficiency can reach 95%.
To achieve the above object, the utility model provides a kind of small-sized variable-frequency electric power voltage-stabilizer, including frequency conversion boosting electricity
Road, drive control circuit, decompression voltage regulator, sampling feedback circuit, in which:
The frequency conversion booster circuit boosts direct current frequency conversion, is converted into high-frequency high-voltage electricity, the frequency conversion boosting electricity
The output end on road and the input terminal of decompression voltage regulator connect；
The decompression voltage regulator by the high-voltage electricity be depressured after frequency reducing pressure stabilizing, the output end of the decompression voltage regulator with
The input terminal of sampling feedback circuit connects；
The sampling feedback circuit is used to monitor the electric energy of the decompression voltage regulator output, and output pulsation is fed back to
Drive control circuit, the output end of the sampling feedback circuit and the input terminal of drive control circuit connect；
The drive control circuit is used to control the output of frequency conversion booster circuit, described to realize the output of stablizing of alternating current
The output end of drive control circuit is connect with the input terminal of frequency conversion booster circuit.
It further include current rectifying and wave filtering circuit as further limiting for the utility model, the current rectifying and wave filtering circuit is to input
Alternating current carries out rectifying and wave-filtering, and to export direct current, the input terminal of the current rectifying and wave filtering circuit connects alternating current, the rectifying and wave-filtering electricity
The output end on road is electrically connected with the input terminal of frequency conversion booster circuit.
Further include protection circuit as further limiting for the utility model, the input terminal of the protection circuit sequentially with
The output end electrical connection of the input terminal, decompression voltage regulator of frequency conversion booster circuit, for monitoring input and load；The protection electricity
The output end on road is electrically connected with the input terminal of drive control circuit, for feeding back to the electric power of drive control circuit input and load
Information makes drive control circuit adjustment output.
As further limiting for the utility model, the frequency conversion booster circuit is switched using driving circuit driving power
Pulsating direct current frequency conversion behind commercial power rectification is boosted, is converted into high-frequency high voltage by pipe.
As further limiting for the utility model, the frequency conversion booster circuit is L6585D chip.
As further limiting for the utility model, the decompression voltage regulator is first dropped high-voltage electricity using high frequency transformer
Pressure, again with full-bridge circuit by the voltage frequency reducing after decompression and pressure stabilizing.
As further limiting for the utility model, the current rectifying and wave filtering circuit uses rectifier diode full bridge circuit.
As further limiting for the utility model, the drive control circuit includes chip I R1150, the chip
2 pins of IR1150 access resistance, and to control output frequency, 3 pins of the chip I R1150 are current detecting, the chip
4 pins of IR1150 the direct current of output is sampled and judge output electricity whether over-voltage or outlet line whether failure,
Information feedback is judged to chip I R1150, and 6 pins of the chip I R1150 are for detecting output voltage.
Compared with prior art, the utility model has the beneficial effects that
1. the utility model controls output voltage by way of Switching Power Supply, transfer efficiency is improved, efficiency is reachable
To 95%；
2. the utility model use the frequency reducing pressure stabilizing of rear class full-bridge, and by sample circuit feed back to control circuit adjustment it is defeated
Out, so the precision of voltage regulation is high, voltage regulation factor is up to 1% or less；
3. the utility model does drive control circuit, input operating voltage range using the integrated circuit of wide scope input
Width still can steady operation down to 110V；
4. the utility model controls high-power switch tube by driving circuit and works, 50Hz power-frequency voltage is transformed into several
Hundred K high frequencies, make voltage-stablizer abandon traditional Industrial Frequency Transformer, and due to using high frequency transformer, weight mitigates significantly, convenient
Outdoor installation uses；Due to not having the rapid wear class device using carbon brush etc, the service life is long, high reliablity；The various guarantors of voltage-stablizer
Safe operation of the protective function proof load equipment under various abnormal conditions.
Detailed description of the invention
Fig. 1 is the functional block diagram of small-sized variable-frequency electric power voltage-stabilizer.
Fig. 2 is the schematic diagram of current rectifying and wave filtering circuit and frequency conversion booster circuit.
Fig. 3 is the schematic diagram of drive control circuit.
Fig. 4 is L6585D internal structure chart.
Fig. 5 is L6585D master control inverter circuit and peripheral auxiliary circuits.
Specific embodiment
The utility model is described in detail in each embodiment shown in reference to the accompanying drawing, but it should be stated that,
These embodiments are not limitation of the utility model, those of ordinary skill in the art according to these embodiments made by function
Energy, method or equivalent transformation or substitution in structure, belong within the protection scope of the utility model.
It please join shown in Fig. 1, Fig. 1 is the principles of the present invention block diagram, and in order to solve, existing small-sized voltage-stablizer is heavy, adjusts
The defect for pressing stability bad, present embodiment discloses a kind of small-sized variable-frequency electric power voltage-stabilizers, including frequency conversion booster circuit, driving
Control circuit, decompression voltage regulator, sampling feedback circuit, current rectifying and wave filtering circuit and protection circuit, in which: frequency conversion booster circuit will
Direct current frequency conversion boosting, is converted into high-frequency high-voltage electricity, the output end of the frequency conversion booster circuit and decompression voltage regulator
Input terminal connection；Decompression voltage regulator by the high-voltage electricity be depressured after frequency reducing pressure stabilizing, the output end of the decompression voltage regulator with
The input terminal of sampling feedback circuit connects；Sampling feedback circuit is used to monitor the electric energy of the decompression voltage regulator output, and will
Output pulsation feeds back to drive control circuit, and the output end of the sampling feedback circuit and the input terminal of drive control circuit connect
It connects；Drive control circuit is used to control the output of frequency conversion booster circuit, to realize the output of stablizing of alternating current, the drive control electricity
The output end on road is connect with the input terminal of frequency conversion booster circuit；Current rectifying and wave filtering circuit carries out rectifying and wave-filtering to input alternating current, with defeated
Direct current out, the input terminal of the current rectifying and wave filtering circuit connect alternating current, and the output end of the current rectifying and wave filtering circuit and frequency conversion are boosted
The input terminal of circuit is electrically connected；Protect the input terminal of circuit sequentially with the input terminal of frequency conversion booster circuit, decompression voltage regulator
Output end electrical connection, for monitoring input and load；The output end of the protection circuit and the input terminal electricity of drive control circuit
Connection makes drive control circuit adjustment output for feeding back to the power information of drive control circuit input and load.
As shown in Figure 1, by current rectifying and wave filtering circuit, DC voltage is exported, using frequency conversion liter after unstable alternating current input
Volt circuit combination drive control circuit, most exports stable alternating voltage through decompression voltage regulator afterwards.Sampling feedback circuit acquisition
Output signal feeds back to drive control circuit to provide stable output, and circuit is protected to provide various abnormal guarantors for modules
Shield.Specifically: rectifying and wave-filtering being carried out to input alternating current first, sine voltage is first become into pulsating direct current, then become not peaceful
Sliding direct current.Current rectifying and wave filtering circuit can use current rectifying and wave filtering circuit as shown in Figure 2, which is that power frequency is whole
Stream, it is high-efficient using rectifier diode full-bridge type.
Drive control circuit as shown in Fig. 2, use chip for IR1150, the characteristic of chip I R1150 include switching frequency,
Dedicated overvoltage protection, soft start, the limitation of Cycle by Cycle peak point current, under-voltage, open loop, UVLO and micropower starting current.In addition,
When requiring for low standby power, chip I R1150 can be driven into sleep pattern, and wastage in bulk or weight electric current is lower than 200 μ A.
IR1150 is PFC (PFC) control chip, designs the continuous conduction mode electricity in the incoming line work of wide scope
Pressure.
In the present embodiment, it adjusts 2 pin institute's connecting resistance of IR1150 chip and controls output frequency, 3 pins are electric current inspection
It surveys, 4 pins sample the 400V direct current of output, when the DC DC over-voltage of output or route failure, will sample
To fault message feed back to chip, 6 feet are that output voltage detects pin, will when 4 pin of chip and 6 pins detect exception
Automatic protection does not export at this time, avoids damaging this circuit and electrical equipment, is given by 8 pins of IR1150 chip
The grid of metal-oxide-semiconductor V1 provides control signal, and the turn-on and turn-off for controlling V1 source electrode and drain electrode boost to the direct current after rectification
400V direct current is converted to 220V, 50HZ exchange electricity output by SPWM inverter circuit, used for successive load by 400V.It drives
Dynamic control circuit uses chip for IR1150, is sampled, compares, amplifies, and then drives servo motor rotation, makes pressure regulator carbon
The position change of brush, by adjust automatically coil ratio, to keep the stabilization of output voltage.
In the present embodiment, frequency and voltage boosting is carried out to the direct current after rectifying and wave-filtering, circuit is to utilize drive as shown in Figure 3
Dynamic control circuit driving power IGBT pipe, is converted into high-frequency electricity for DC voltage using the switching characteristic of power IGBT pipe
Pressure.L6585D internal structure chart as shown in Figure 4.L6585D governor circuit and peripheral auxiliary circuits are illustrated in figure 5, it is anti-by sampling
The composition such as current feed circuit, overvoltage crowbar, current foldback circuit, overload protecting circuit and overheating protection circuit.7 pins are over-voltage
Detection pipe, by the voltage after R7, R8 divider resistance partial pressure detection boostings, and the data feedback that will test returns drive control
Circuit, drive control circuit are connected final adjustment output by control IGBT pipe, realize the effect for stablizing output.In the proper of IC
Behavior, 4 pins are low level impedance, and when detecting overcurrent, automatic protection is not exported.Multiplier is input to based on 8 pins.
The pin is connected to the line voltage of rectification by a resitstance voltage divider, and provides the sinusoidal reference PFC current cycle.
9 pins are the error amplifier of output, it is ensured that High Power Factor and low harmonics distortion.16 supervisors are that low side driver exports, defeated
290 milliamperes of sources and 480 milliamperes of electric current driving Q3 can be extremely provided out.19 supervisors are that high-side driver exports, and output stage can mention
For 290 milliamperes of sources and 480 milliamperes of electric currents for driving Q2.The outer connection capacitor of 20 supervisors constitutes boostrap circuit and replaces two poles of bootstrapping
Pipe drives downside Q3 by high side voltage synchronous.Chip is output and input by detection, by feeding back to control when having abnormal occur
Circuit processed come adjust output, thus achieve the purpose that protect equipment and itself.And the self recovery when abnormal conditions release, no
Load is influenced to work normally.
It should be understood that the small-sized variable-frequency electric power voltage-stabilizer of the present embodiment, each circuit when actual design produces, and
It is not limited only to circuit diagram listed by drawing and description, it is only necessary to the circuit designed in the following way, it can be in this implementation
It is used in example.Such as: current rectifying and wave filtering circuit is industrial frequency rectifying, and using rectifier diode full-bridge type, rectification efficiency is high.Frequency conversion boosting
Circuit is that the pulsating direct current frequency conversion behind commercial power rectification is boosted, high-frequency is converted into using driving circuit driving power switching tube
High voltage.The circuit is L6585D using chip, and technology maturation has wide range of applications, high reliablity.L6585D is ST public affairs
Department releases the combination IC for integrating PFC Yu half-bridge ballast controller, is produced using High voltage BCD process technology, it is same
Pfc controller, H-bridge controller driver and logic circuit are embedded on chip.Decompression voltage regulator is will with high frequency transformer
The high pressure of prime is first depressured, then with full-bridge circuit by the voltage frequency reducing after conversion and pressure stabilizing.Sampling feedback circuit is monitoring output,
And output pulsation is fed back into control circuit, control circuit by adjusting switching tube output final adjustment output, stablize defeated by realization
Effect out.Protecting circuit includes overvoltage protection, overcurrent protection, overload protection and overheating protection etc..By monitoring input and bear
Carry, when having abnormal occur, output adjusted by feeding back to control circuit, thus achieve the purpose that protection equipment and itself.And
And the self recovery when abnormal conditions release, it does not influence load and works normally.
That the purpose of the utility model is to overcome conventional electric power voltage-stablizers is heavy, the precision of voltage regulation is low, and input voltage range is narrow,
Poor reliability, service life short disadvantage.The present embodiment is to improve to convert to control output voltage by way of Switching Power Supply to imitate
Rate, efficiency can reach 95%；Rear class full-bridge frequency reducing pressure stabilizing, and control circuit adjustment output is fed back to by sample circuit, so surely
Press precision high, voltage regulation factor is up to 1% or less；Drive control circuit, input service are done using the integrated circuit that wide scope inputs
Voltage range is wide, still can steady operation down to 110V；High-power switch tube work is controlled by driving circuit, by 50Hz power frequency
Voltage is transformed into several hundred K high frequencies, and voltage-stablizer is made to have abandoned traditional Industrial Frequency Transformer, and due to using high frequency transformer, weight
Mitigate significantly, outdoor installation is facilitated to use；Due to not having the rapid wear class device using carbon brush etc, the service life is long, high reliablity；Surely
Safe operation of the various defencive function proof load equipment of depressor under various abnormal conditions.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body explanation, they are all without departing from made by the utility model skill spirit not to limit the protection scope of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of small-sized variable-frequency electric power voltage-stabilizer, which is characterized in that steady including frequency conversion booster circuit, drive control circuit, decompression
Volt circuit, sampling feedback circuit, in which:
The frequency conversion booster circuit boosts direct current frequency conversion, is converted into high-frequency high-voltage electricity, the frequency conversion booster circuit
The connection of the input terminal of output end and decompression voltage regulator；
Frequency reducing pressure stabilizing, the output end of the decompression voltage regulator and sampling after the high-voltage electricity is depressured by the decompression voltage regulator
The input terminal of feed circuit connects；
The sampling feedback circuit is used to monitor the electric energy of the decompression voltage regulator output, and output pulsation is fed back to driving
Control circuit, the output end of the sampling feedback circuit and the input terminal of drive control circuit connect；
The drive control circuit is used to control the output of frequency conversion booster circuit, to realize that stablizing for alternating current exports, the driving
The output end of control circuit is connect with the input terminal of frequency conversion booster circuit.
2. small-sized variable-frequency electric power voltage-stabilizer as described in claim 1, which is characterized in that it further include current rectifying and wave filtering circuit, it is described
Current rectifying and wave filtering circuit carries out rectifying and wave-filtering to input alternating current, to export direct current, the input terminal connection of the current rectifying and wave filtering circuit
The output end of alternating current, the current rectifying and wave filtering circuit is electrically connected with the input terminal of frequency conversion booster circuit.
3. small-sized variable-frequency electric power voltage-stabilizer as claimed in claim 1 or 2, which is characterized in that further include protection circuit, the guarantor
The input terminal of protection circuit is sequentially electrically connected with the output end of the input terminal of frequency conversion booster circuit, decompression voltage regulator, for monitoring
Input and load；The output end of the protection circuit is electrically connected with the input terminal of drive control circuit, for feeding back to driving control
The power information of circuit input and load processed makes drive control circuit adjustment output.
4. small-sized variable-frequency electric power voltage-stabilizer as described in claim 1, which is characterized in that the frequency conversion booster circuit is using driving
Pulsating direct current frequency conversion behind commercial power rectification is boosted, is converted into high-frequency high voltage by circuit drives power switch tube.
5. small-sized variable-frequency electric power voltage-stabilizer as claimed in claim 4, which is characterized in that the frequency conversion booster circuit is L6585D
Chip.
6. small-sized variable-frequency electric power voltage-stabilizer as described in claim 1, which is characterized in that the decompression voltage regulator uses high frequency
High-voltage electricity is first depressured by transformer, again with full-bridge circuit by the voltage frequency reducing after decompression and pressure stabilizing.
7. small-sized variable-frequency electric power voltage-stabilizer as claimed in claim 2, which is characterized in that the current rectifying and wave filtering circuit is using rectification
Diode full bridge circuit.
8. small-sized variable-frequency electric power voltage-stabilizer as described in claim 1, which is characterized in that the drive control circuit includes chip
2 pins of IR1150, the chip I R1150 access resistance, and to control output frequency, 3 pins of the chip I R1150 are electricity
Stream detection, 4 pins of the chip I R1150 direct current of output is sampled and judge output electricity whether over-voltage or output
Route whether failure, judgement information feedback to chip I R1150,6 pins of the chip I R1150 are for detecting output electricity
Pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820822205.1U CN208226892U (en) | 2018-05-30 | 2018-05-30 | A kind of small-sized variable-frequency electric power voltage-stabilizer |
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| CN201820822205.1U CN208226892U (en) | 2018-05-30 | 2018-05-30 | A kind of small-sized variable-frequency electric power voltage-stabilizer |
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| CN208226892U true CN208226892U (en) | 2018-12-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110506883A (en) * | 2019-08-30 | 2019-11-29 | 武汉森木磊石科技有限公司 | For fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader and device |
| CN112968514A (en) * | 2020-08-20 | 2021-06-15 | 合肥海尔智能电子有限公司 | Power supply circuit and frequency conversion equipment |
| CN113422532A (en) * | 2021-04-29 | 2021-09-21 | 上海奉天电子股份有限公司 | Variable output power vehicle-mounted power supply inverter circuit of fuel and new energy vehicle |
-
2018
- 2018-05-30 CN CN201820822205.1U patent/CN208226892U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110506883A (en) * | 2019-08-30 | 2019-11-29 | 武汉森木磊石科技有限公司 | For fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader and device |
| CN112968514A (en) * | 2020-08-20 | 2021-06-15 | 合肥海尔智能电子有限公司 | Power supply circuit and frequency conversion equipment |
| CN113422532A (en) * | 2021-04-29 | 2021-09-21 | 上海奉天电子股份有限公司 | Variable output power vehicle-mounted power supply inverter circuit of fuel and new energy vehicle |
| CN113422532B (en) * | 2021-04-29 | 2022-05-20 | 上海奉天电子股份有限公司 | Variable output power vehicle-mounted power supply inverter circuit of fuel and new energy vehicle |
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