CN205725476U - A kind of power output circuit with feedback energy - Google Patents
A kind of power output circuit with feedback energy Download PDFInfo
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- CN205725476U CN205725476U CN201620683418.1U CN201620683418U CN205725476U CN 205725476 U CN205725476 U CN 205725476U CN 201620683418 U CN201620683418 U CN 201620683418U CN 205725476 U CN205725476 U CN 205725476U
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- power switch
- transformer unit
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Abstract
A kind of power output circuit with feedback energy, relate to the power output circuit of Switching Power Supply, including the first rectification circuit, filter capacitor, power switch pipe and transformer unit, 220V power frequency supply is input in the first rectification circuit, the positive pole of the first rectification circuit constitutes working power after being connected with the positive pole of filter capacitor, main circuit to be made up of multiple power switch pipes and power conversion transformer unit, power conversion transformer unit is by primary coil, energy back coil and power output winding are constituted, multiple power switch pipes constitute power input circuit with the primary coil of power conversion transformer unit；Having the second rectification circuit, the leading-out terminal of energy back coil to be connected to the ac input end of the second rectification circuit in circuit, the positive pole of the second rectification circuit is connected to working power；Power output winding constitutes power output loop with load.The energy back that this utility model is accumulated leakage inductance and distribution capacity in power conversion transformator recycles in working power.
Description
Technical field
This utility model relates to a kind of electronic circuit, is related specifically to the power output circuit of a kind of Switching Power Supply.
Background technology
High frequency switch power has high efficiency and miniaturization owing to eliminating Industrial Frequency Transformer, raw in industry
Are used widely in product, environmental protection and modern communications field.In the flue gas purification system of station boiler or be easily generated the life of dust
Produce in workshop, electrostatic (electric dust) precipitator need to be used to carry out dedusting, in electrostatic (electric dust) precipitator device, need the Switching Power Supply of booster type to produce electrostatic；
Industrially it is applied to plasma ignition, gasifying coal by using plasma, plasma pyrolysis water hydrogen manufacturing, industry harmful substance disposal, doctor
Treat in the plasma device that refuse disposal, consumer waste innocent and energy are disposed, need the Switching Power Supply of booster type to produce
Raw high-tension electricity carries out striking.
During Switching Power Supply work, the switching tube alternate conduction in high frequency transformer primary side loop or cut-off, make high frequency become
The magnetic core of depressor produces alternating flux, so that the secondary side of high frequency transformer obtains power output.Due in high frequency transformer
There is leakage inductance and distribution capacity, surge current and peak voltage can be caused at switching tube shutdown moment, leakage inductance and distribution capacity, make
Switching device damages.What in high frequency transformer, leakage inductance and distribution capacity were accumulated is a kind of harmful energy, in order to avoid switch
Device failure, general employing RCD absorbing circuit consumes leakage inductance and the energy of distribution capacity accumulation in transformator.But RCD absorbs
Circuit not only consumes leakage inductance and the energy of distribution capacity accumulation in transformator, also consumes the magnetization energy of transformator, therefore simultaneously
Reduce the efficiency of transformator and increase power consumption.
Utility model content
The purpose of this utility model is that the energy back that leakage inductance and distribution capacity in power conversion transformator are accumulated arrives
Working power recycles, it is achieved save electric energy and reduce surge current and switching device is rushed by peak voltage
Hit, improve the efficiency of Switching Power Supply.
A kind of power output circuit with feedback energy of the present utility model, including the first rectification circuit, filter capacitor
Device, power switch pipe and transformer unit, 220V power frequency supply is input in the first rectification circuit, the positive pole of the first rectification circuit
Constitute working power V+ after being connected with the positive pole of filter capacitor, it is characterized in that main circuit will be by multiple power switch pipes and power
Conversion transformer unit (Ta) forms, and wherein, power conversion transformer unit (Ta) is by primary coil, energy back coil (W2)
Constituting with power output winding (W3), multiple power switch pipes constitute merit with the primary coil of power conversion transformer unit (Ta)
Rate input circuit；Circuit there are the second rectification circuit (VD2), the leading-out terminal of energy back coil (W2) are connected to the second rectified current
The ac input end on road (VD2), the positive pole of the second rectification circuit (VD2) is connected to working power V+；The input electricity of primary coil
Flow and sense that power output winding (W3), power output winding (W3) constitute power output loop with load by mutual inductance effect.
In this utility model, power switch pipe is more than two, and the power of power conversion transformer unit (Ta) inputs back
Road is following a kind of frame mode therein:
The first frame mode, power switch pipe include the first power switch pipe (VT1), the second power switch pipe (VT2),
3rd power switch pipe (VT3) and the 4th power switch pipe (VT4), the drain electrode of the first power switch pipe (VT1) and the second power
The drain electrode of switching tube (VT2) is connected to working power V+, and the source electrode of the first power switch pipe (VT1) is connected to the 3rd power switch
The drain electrode of pipe (VT3) and the head end of power conversion transformer unit (Ta) primary coil, the source electrode of the second power switch pipe (VT2)
It is connected to drain electrode and the tail end of power conversion transformer unit (Ta) primary coil of the 4th power switch pipe (VT4), the 3rd merit
The source electrode of rate switching tube (VT3) and the source electrode of the 4th power switch pipe (VT4) are connected to ground wire；
The second frame mode, power switch pipe includes the first power switch pipe (VT1) and the second power switch pipe
(VT2), the primary coil of power conversion transformer unit (Ta) has centre cap, power conversion transformer unit (Ta) former sideline
The centre cap of circle is connected to working power V+, and the head end of power conversion transformer unit (Ta) primary coil is connected to the first merit
The drain electrode of rate switching tube (VT1), the tail end of power conversion transformer unit (Ta) primary coil is connected to the second power switch pipe
(VT2) drain electrode, the source electrode of the first power switch pipe (VT1) and the source electrode of the second power switch pipe (VT2) are connected to ground wire.
In this utility model, between working power V+ and ground wire, there is varistor (VR).
This utility model is applied in switching power unit, when operating frequency is more than 400 kilocycle, and power conversion transformator
For air-core transformer, it is not required to use magnetic core；When operating frequency is 1-400 kilocycle, power conversion transformator needs use ferrum oxygen
Body magnetic core.
Operation principle of the present utility model is: the first power switch pipe (VT1) is alternately led with the second power switch pipe (VT2)
Logical or cut-off, or the first power switch pipe (VT1), the 4th power switch pipe (VT4) and the second power switch pipe (VT2), the
Three power switch pipes (VT3) alternate conduction or cut-off, make the power output winding (W3) of power conversion transformer unit (Ta) produce
Raw power output, owing to making to exist in power conversion transformator leakage inductance and distribution capacity, in power switch pipe shutdown moment, leakage inductance
Surge current and peak voltage can be produced with distribution capacity, put aside energy；When leakage inductance and distribution electricity in power conversion transformator
When the energy that volume has stored makes the voltage that the electromotive force on energy feedback coil (W2) is more than working power V+, power conversion transformator
Will pass through energy back coil (W2) to working power V+ feedback energy, be circulated utilization, simultaneously, it is to avoid or reduce surge electricity
Stream and the peak voltage impact to power switch pipe.
The beneficial effects of the utility model are: a kind of power output circuit with feedback energy of offer, and power is become
The energy back that in transformation depressor, leakage inductance and distribution capacity are accumulated recycles in working power, it is achieved save electricity
Can, and reduce the impact to power switch pipe of surge current and peak voltage, improve the efficiency of Switching Power Supply.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of power output circuit figure with feedback energy of the present utility model.
Accompanying drawing 2 is the power output circuit figure that another kind of the present utility model has feedback energy.
Accompanying drawing 3 be of the present utility model another there is the power output circuit figure of feedback energy.
Accompanying drawing 4 is the power output circuit figure that this utility model is applied in the supply unit of extra-high pressure.
In figure: VD1. the first rectification circuit, VD2. the second rectification circuit, VR. varistor, VT1. the first power switch
Pipe, VT2. the second power switch pipe, VT3. the 3rd power switch pipe, VT4. the 4th power switch pipe, C1. filter capacitor, V+.
Working power, Ta. power conversion transformer unit, the first winding of W1-1. primary coil, the second of W1-2. primary coil around
Group, W2. energy back coil, W3. power output winding, Tb-1. the first high-tension transformer unit, Wb-1. the first primary coil,
Wc-1. first level high-tension coil, Tb-2. the second high-tension transformer unit, Wb-2. the second primary coil, Wc-2. second subprime
High-tension coil, Tb-n. the n-th high-tension transformer unit, Wb-3. the 3rd primary coil, Wc-3. third time level high-tension coil, 1. work
Frequency power first input end, 2. power frequency supply the second input, 3. the first power take-off, 4. the second power take-off, 5. magnetic
Core, 6. the first high-voltage output end, 7. the second high-voltage output end.
Detailed description of the invention
In embodiment shown in embodiment 1 Fig. 1, a kind of have the power output circuit of feedback energy by the first rectification
Circuit, filter capacitor, the second rectification circuit (VD2), power switch pipe and power conversion transformer unit (Ta) composition, its
In, 220V power frequency supply is input in the first rectification circuit, and the positive pole of the first rectification circuit is connected with the positive pole of filter capacitor
Rear composition working power V+, has varistor (VR) between working power V+ and ground wire；Power switch pipe includes the first power
Switching tube (VT1), the second power switch pipe (VT2), the 3rd power switch pipe (VT3) and the 4th power switch pipe (VT4)；Power
Conversion transformer unit (Ta) is anti-by first winding (W1-1) of primary coil, second winding (W1-2) of primary coil, energy
Feeder line circle (W2) and power output winding (W3) are constituted, first winding (W1-1) of primary coil and energy back coil (W2) with
Double-wire parallel wound mode carries out coiling, and second winding (W1-2) of primary coil and power output winding (W3) are in Double-wire parallel wound mode
Carrying out coiling, first winding (W1-1) of primary coil is forward connected with second winding (W1-2) of primary coil；First
Power switch pipe (VT1), the second power switch pipe (VT2), the 3rd power switch pipe (VT3), the 4th power switch pipe (VT4) and
The primary coil of power conversion transformer unit (Ta) constitutes power input circuit, the drain electrode of the first power switch pipe (VT1) and
The drain electrode of the second power switch pipe (VT2) is connected to working power V+, and the source electrode of the first power switch pipe (VT1) is connected to the 3rd
The drain electrode of power switch pipe (VT3) and the head end of power conversion transformer unit (Ta) primary coil, the second power switch pipe
(VT2) source electrode is connected to the drain electrode of the 4th power switch pipe (VT4) and power conversion transformer unit (Ta) primary coil
Tail end, the source electrode of the 3rd power switch pipe (VT3) and the source electrode of the 4th power switch pipe (VT4) are connected to ground wire；Second rectification
Circuit (VD2) is full bridge rectifier, and two leading-out terminals of energy back coil (W2) are connected to the second rectification circuit (VD2)
Two ac input ends, the positive pole of the second rectification circuit (VD2) is connected to working power V+, bearing of the second rectification circuit (VD2)
Pole is connected to ground wire；The input current of primary coil senses power output winding (W3), power output lead by mutual inductance effect
Circle (W3) constitutes power output loop with load.The present embodiment is applied in switching power unit, when operating frequency is 1-400 thousand
Zhou Shi, have in power conversion transformator magnetic core (5), magnetic core (5) be the magnet of two U-iron oxysome materials to being combined into, former
First winding (W1-1) and the energy back coil (W2) of sideline circle are arranged on the same magnetic post of side, the second of primary coil
Winding (W1-2) and power output winding (W3) are arranged on the same magnetic post of opposite side.
In embodiment shown in embodiment 2 Fig. 2, it is first that another kind has the power output circuit of feedback energy
On the basis of embodiment, having centre cap to draw in energy back coil (W2), the second rectification circuit (VD2) is all wave rectification
Circuit, the centre cap in energy back coil (W2) is connected to ground wire, and two leading-out terminals of energy back coil (W2) connect
To the anode of two rectifier tubes of full-wave rectifying circuit, the negative electrode of two rectifier tubes of full-wave rectifying circuit is connected to working power
V+.Other structure is basically the same as those in the first embodiment, and repeats no more.
In embodiment shown in embodiment 3 Fig. 3, another power output circuit with feedback energy is first
On the basis of embodiment, at the of the first winding (W1-1) and the primary coil of power conversion transformer unit (Ta) primary coil
The forward junction point of two windings (W1-2) has centre cap to pick out, and its centre cap is connected to working power V+, power switch pipe
Including the first power switch pipe (VT1) and the second power switch pipe (VT2), power conversion transformer unit (Ta) primary coil
The head end of the first winding (W1-1) is connected to the drain electrode of the first power switch pipe (VT1), and power conversion transformer unit (Ta) is former
The tail end of second winding (W1-2) of sideline circle is connected to the drain electrode of the second power switch pipe (VT2), the first power switch pipe
(VT1) source electrode and the source electrode of the second power switch pipe (VT2) are connected to ground wire.Other structure is basically the same as those in the first embodiment,
Repeat no more.
In embodiment shown in embodiment 4 Fig. 4, it is that the circuit structure of first embodiment or the 3rd embodiment is in superelevation
The power output circuit of application in the supply unit of voltage, wherein, the structure of power conversion transformer unit (Ta) and former sideline
Connected mode and the first embodiment of circle or the 3rd embodiment identical, repeats no more.In the present embodiment, constitute the parts of load
For multiple high-tension transformer unit, the primary coil of multiple high-tension transformer unit is connected to power and becomes after forward connecting
Changing on the power output winding (W3) of transformer unit (Ta), the secondary high pressure coil of multiple high-tension transformer unit is carried out forward
Connecting, during work, high-tension electricity produces respectively on the secondary high pressure coil of multiple high-tension transformer unit, is then overlapped,
Formation extra-high pressure exports, to meet the requirement of the distance striking of plasma device.
Claims (3)
1. there is a power output circuit for feedback energy, including the first rectification circuit, filter capacitor, power switch pipe and
Transformer unit, 220V power frequency supply is input in the first rectification circuit, the positive pole of the first rectification circuit and filter capacitor
Positive pole constitutes working power V+ after connecting, and it is characterized in that main circuit will be by multiple power switch pipes and power conversion transformer unit
(Ta) composition, wherein, power conversion transformer unit (Ta) is by primary coil, energy back coil (W2) and power output winding
(W3) constituting, multiple power switch pipes constitute power input circuit with the primary coil of power conversion transformer unit (Ta)；Electricity
Having the second rectification circuit (VD2) in road, the leading-out terminal of energy back coil (W2) is connected to the exchange of the second rectification circuit (VD2)
Input, the positive pole of the second rectification circuit (VD2) is connected to working power V+；Power conversion transformer unit (Ta) primary coil
Input current sense power output winding (W3) by mutual inductance effect, it is defeated that power output winding (W3) and load constitute power
Go out loop.
A kind of power output circuit with feedback energy the most according to claim 1, is characterized in that power switch pipe is
More than two, the power input circuit of power conversion transformer unit (Ta) is following a kind of frame mode therein:
The first frame mode, power switch pipe include the first power switch pipe (VT1), the second power switch pipe (VT2), the 3rd
Power switch pipe (VT3) and the 4th power switch pipe (VT4), the drain electrode of the first power switch pipe (VT1) and the second power switch
The drain electrode of pipe (VT2) is connected to working power V+, and the source electrode of the first power switch pipe (VT1) is connected to the 3rd power switch pipe
(VT3) drain electrode and the head end of power conversion transformer unit (Ta) primary coil, the source electrode of the second power switch pipe (VT2) is even
Receive drain electrode and the tail end of power conversion transformer unit (Ta) primary coil of the 4th power switch pipe (VT4), the 3rd power
The source electrode of switching tube (VT3) and the source electrode of the 4th power switch pipe (VT4) are connected to ground wire；
The second frame mode, power switch pipe includes the first power switch pipe (VT1) and the second power switch pipe (VT2), merit
The primary coil of rate conversion transformer unit (Ta) has centre cap, the center of power conversion transformer unit (Ta) primary coil
Tap is connected to working power V+, and the head end of power conversion transformer unit (Ta) primary coil is connected to the first power switch pipe
(VT1) drain electrode, the tail end of power conversion transformer unit (Ta) primary coil is connected to the leakage of the second power switch pipe (VT2)
Pole, the source electrode of the first power switch pipe (VT1) and the source electrode of the second power switch pipe (VT2) are connected to ground wire.
A kind of power output circuit with feedback energy the most according to claim 1, is characterized in that in working power V+
And there is varistor (VR) between ground wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620683418.1U CN205725476U (en) | 2016-07-03 | 2016-07-03 | A kind of power output circuit with feedback energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620683418.1U CN205725476U (en) | 2016-07-03 | 2016-07-03 | A kind of power output circuit with feedback energy |
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| Publication Number | Publication Date |
|---|---|
| CN205725476U true CN205725476U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620683418.1U Expired - Fee Related CN205725476U (en) | 2016-07-03 | 2016-07-03 | A kind of power output circuit with feedback energy |
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| CN (1) | CN205725476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026688A (en) * | 2016-07-03 | 2016-10-12 | 衢州昀睿工业设计有限公司 | Power output circuit having feedback energy |
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2016
- 2016-07-03 CN CN201620683418.1U patent/CN205725476U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026688A (en) * | 2016-07-03 | 2016-10-12 | 衢州昀睿工业设计有限公司 | Power output circuit having feedback energy |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20190703 |