CN106787794A - A kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges - Google Patents
A kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges Download PDFInfo
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- CN106787794A CN106787794A CN201611160714.4A CN201611160714A CN106787794A CN 106787794 A CN106787794 A CN 106787794A CN 201611160714 A CN201611160714 A CN 201611160714A CN 106787794 A CN106787794 A CN 106787794A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges, it is included：Input block；PFC boost unit；Flyback isolated converter unit, include first switch pipe, transformer, first commutation diode and the first electrochemical capacitor, the first end of the transformer primary side winding is connected to the output end of PFC boost unit, second end of the transformer primary side winding is connected to the drain electrode of first switch pipe, the source electrode of the first switch pipe connects front end ground, the first end of the transformer secondary winding is connected to the anode of the first commutation diode, the second termination back-end ground of the transformer secondary winding, the negative electrode of first commutation diode as flyback isolated converter unit output end；Inversion reversed phase unit, for the output voltage of flyback isolated converter unit to be carried out into inversion conversion after export alternating current.The present invention can improve PF values and improve output voltage quality.
Description
Technical field
The present invention relates to voltage conversion circuit, more particularly to a kind of intelligent amendment wave voltage based on PFC flyback full-bridges
Change-over circuit.
Background technology
In the prior art, the intelligent boost-buck conversion equipment for turning AC by AC is otherwise known as travelling insert row, in the device, amendment
Wave voltage change-over circuit is its Key Circuit, is a kind of circuit that can realize AC-AC conversion, can be realized in AC-AC conversion
The function of buck and burning voltage and frequency.But current AC-AC just most of meaningful formula equipment Market is non-isolation type
Topological circuit, and PF values are low, output voltage quality is low, security reliability is poor.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, there is provided one kind is based on PFC flyback full-bridges
Intelligent amendment wave voltage change-over circuit, be used to improve the PF values of voltage conversion device, improve output voltage quality, Yi Jiti
High security and reliability.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that.
A kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges, it is included：One input block, uses
In output DC voltage；One PFC boost unit, is connected to the output end of input block, for the output voltage to input block
Carry out boost conversion；One flyback isolated converter unit, includes first switch pipe, transformer, the first commutation diode and
One electrochemical capacitor, the first end of the transformer primary side winding is connected to the output end of PFC boost unit, the transformer primary side
Second end of winding is connected to the drain electrode of first switch pipe, and the source electrode of the first switch pipe connects front end ground, the first switch
The grid of pipe is used to access pwm signal, and the first end of the transformer secondary winding is connected to the anode of the first commutation diode,
The negative electrode of first commutation diode connects the positive pole of the first electrochemical capacitor, and the negative pole of first electrochemical capacitor connects rear end
Ground, the second termination back-end ground of the transformer secondary winding, the negative electrode of first commutation diode isolates change as flyback
The output end of exchange unit；One inversion reversed phase unit, is connected to the output end of flyback isolated converter unit, the inversion paraphase
Unit is used to export alternating current after carrying out inversion conversion to the output voltage of flyback isolated converter unit.
Preferably, the flyback isolated converter unit also includes first resistor, the first electric capacity and the pole of the second rectification two
Pipe, the first resistor is connected between the negative electrode of the first end of transformer secondary winding and the second commutation diode, and described the
The anode of two commutation diodes is connected to the second end of transformer secondary winding, and first electric capacity is parallel to first resistor.
Preferably, the flyback isolated converter unit also includes second resistance and pull down resistor, the second resistance
Be connected between the source electrode of first switch pipe and front end ground, the pull down resistor be connected to the grid of first switch pipe and source electrode it
Between.
Preferably, the input block includes socket, insurance, lightning protection resistance, common mode inhibition inductance, safety electric capacity and whole
Stream bridge, the insurance is serially connected with the zero line of socket or live wire, and the front end of the common mode inhibition inductance is parallel to socket, described anti-
Thunder and lightning resistance is parallel to the front end of common mode inhibition inductance, and the input of the safety electric capacity and rectifier bridge is parallel to common mode inhibition electricity
The rear end of sense, the output end of the rectifier bridge is parallel with filter capacitor.
Preferably, the PFC boost unit includes boost inductance, the 3rd switching tube, the first fly-wheel diode and second
Electrochemical capacitor, the front end of the boost inductance is connected to the output end of input block, and the rear end of the boost inductance is connected to
The drain electrode of three switching tubes, the source electrode of the 3rd switching tube connects front end ground, and the grid of the 3rd switching tube is used to access all the way
Pwm control signal, the anode of drain electrode first fly-wheel diode of connection of the 3rd switching tube, first fly-wheel diode
Negative electrode as PFC boost unit output end, and the negative electrode of first fly-wheel diode connects the positive pole of the second electrochemical capacitor, the
The negative pole of two electrochemical capacitors connects front end ground.
Preferably, a MCU control unit, the grid of the first switch pipe and the grid of the 3rd switching tube point are also included
MCU control unit is not connected to, and the MCU control unit is used to distinguish output pwm signal to first switch pipe and the 3rd switch
Pipe, to control first switch pipe and the 3rd switching tube on off operating mode.
Preferably, the MCU control unit includes single-chip microcomputer and its peripheral circuit.
Preferably, an AC sampling unit is also included, the AC sampling unit is connected to the input of input block
Between MCU control unit, the AC sampling unit is used to gather the voltage of input block AC and feed back to MCU controls
Unit.
Preferably, the AC sampling unit includes amplifier, and two inputs of the amplifier are respectively by current limliting electricity
Hinder and be connected to the input of input block, the output end of the amplifier is connected to MCU control unit.
Preferably, the first sampling resistor is connected between the source electrode and front end ground of the 3rd switching tube, the described 3rd opens
The source electrode for closing pipe is connected to MCU control unit, makes MCU control unit gather the 3rd switching tube by first sampling resistor
The electric signal of source electrode.
In intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges disclosed by the invention, using input rectifying
Filter unit carries out output ripple DC voltage after rectification and filtering to line voltage, afterwards using PFC boost unit to pulsation
DC voltage carries out boosting treatment, in flyback isolated converter unit, pwm signal is loaded on the grid of first switch pipe.
When first switch pipe is turned on, primary side winding, the first switch pipe of transformer form loop and produce electric current to front end ground, now
The primary side winding of transformer is turned on and starts energy storage, and when first switch pipe is turned off, the primary side winding of transformer passes through magnetic core lotus root
Close and discharged to vice-side winding, be then filtered by being transmitted to the first electrochemical capacitor after the first rectifies,
And by filtered direct current electricity output to inversion reversed phase unit, and carried out exporting exchange after inversion conversion by inversion reversed phase unit
Electricity.In foregoing circuit, secondary voltage can be made to be less than or primary side high input electricity by the number of turn for adjusting transformer primary vice-side winding
Pressure, so as to reach buck purpose, based on foregoing circuit, the present invention realizes the isolation transmission of voltage, can effectively improve boosting/
The PF values of conversion equipment are depressured, while also improving output voltage quality so that voltage conversion process is more safe and reliable.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams for correcting wave voltage change-over circuit.
Fig. 2 is the circuit theory diagrams of AC sampling unit in the preferred embodiment of the present invention.
Fig. 3 is the circuit theory diagrams of MCU control unit in the preferred embodiment of the present invention.
Specific embodiment
The present invention is described in more detail with reference to the accompanying drawings and examples.
The invention discloses a kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges, with reference to Fig. 1 to figure
Shown in 3, it is included：
One input block 10, for exporting DC voltage；
One PFC boost unit 20, is connected to the output end of input block 10, enters for the output voltage to input block 10
Row boost conversion；
One flyback isolated converter unit 30, include first switch pipe Q6, transformer T1, the first commutation diode D5 and
First electrochemical capacitor C3, the first end of the transformer T1 primary side windings is connected to the output end of PFC boost unit 20, the change
Second end of depressor T1 primary side windings is connected to the drain electrode of first switch pipe Q6, and the source electrode of the first switch pipe Q6 connects front end
Ground, the grid of the first switch pipe Q6 is used to accessing pwm signal, and the first end of the transformer T1 vice-side windings is connected to the
The anode of one commutation diode D5, the negative electrode of the first commutation diode D5 connects the positive pole of the first electrochemical capacitor C3, described
The negative pole of the first electrochemical capacitor C3 connect rear end ground, the transformer T1 vice-side windings the second termination back-end ground, described first is whole
The negative electrode of diode D5 is flowed as the output end of flyback isolated converter unit 30；
One inversion reversed phase unit 60, is connected to the output end of flyback isolated converter unit 30, the inversion reversed phase unit
60 are used to export alternating current after carrying out inversion conversion to the output voltage of flyback isolated converter unit 30.
In above-mentioned amendment wave voltage change-over circuit, exported after rectification and filtering are carried out to line voltage using input block 10
Pulsating dc voltage, carries out boosting treatment using PFC boost unit 20 to pulsating dc voltage afterwards, in flyback isolated converter
In unit 30, pwm signal is loaded on the grid of first switch pipe Q6.When first switch pipe Q6 is turned on, the original of transformer T1
Side winding, first switch pipe Q6 form loop and produce electric current to front end ground, and now the primary side winding of transformer T1 is turned on and opened
Beginning energy storage, when first switch pipe Q6 is turned off, the primary side winding of transformer T1 is closed by magnetic core lotus root and discharged to vice-side winding,
Then it is filtered by being transmitted to the first electrochemical capacitor C3 after the first commutation diode D5 rectifications, and by filtered direct current
Output exports alternating current to inversion reversed phase unit 60, and after carrying out inversion conversion by inversion reversed phase unit 60.In foregoing circuit, lead to
The number of turn for crossing adjustment transformer T1 original vice-side windings can make secondary voltage less than primary side input voltage, so as to reach step-down mesh
, based on foregoing circuit, the present invention realizes the isolation transmission of voltage, can effectively improve the PF values of step-up/down conversion equipment,
Also improve output voltage quality simultaneously so that voltage conversion process is more safe and reliable.
Used as a kind of preferred embodiment, the flyback isolated converter unit 30 also includes first resistor R26, the first electric capacity
C5 and the second commutation diode D6, the first resistor R26 are connected to first end and second rectification of transformer T1 vice-side windings
Between the negative electrode of diode D6, the anode of the second commutation diode D6 is connected to the second end of transformer T1 vice-side windings,
The first electric capacity C5 is parallel to first resistor R26.C5, R26, D6 therein constitute peak absorbing circuit, for absorbing leakage inductance
Produced peak voltage.
In the present embodiment, the flyback isolated converter unit 30 also includes second resistance R2B and pull down resistor R25,
The second resistance R2B is connected between the source electrode of first switch pipe Q6 and front end ground, and the pull down resistor R25 is connected to first
Between the grid and source electrode of switching tube Q6.Wherein, R25 is the pull down resistor of first switch pipe Q6, for preventing from misleading.
Used as a kind of preferred circuit structure, the input block 10 includes socket, insures F2, lightning protection resistance RV1, is total to
Mould suppresses inductance L1, safety electric capacity CX1 and rectifier bridge DB1, and the insurance F2 is serially connected with the zero line of socket or live wire, described common
The front end that mould suppresses inductance L1 is parallel to socket, and the lightning protection resistance RV1 is parallel to the front end of common mode inhibition inductance L1, the peace
The input for advising electric capacity CX1 and rectifier bridge DB1 is parallel to the rear end of common mode inhibition inductance L1, the output of the rectifier bridge DB1
End is parallel with filter capacitor C1.
On boosting part, the PFC boost unit 20 includes boost inductance L2, the 3rd switching tube Q5, the first afterflow
The front end of diode D1 and the second electrochemical capacitor C2, the boost inductance L2 is connected to the output end of input block 10, the liter
The rear end of voltage inductance L2 is connected to the drain electrode of the 3rd switching tube Q5, and the source electrode of the 3rd switching tube Q5 connects front end ground, and described the
The grid of three switching tube Q5 is used to access pwm control signal all the way, and the drain electrode of the 3rd switching tube Q5 connects the first afterflow two
The anode of pole pipe D1, the negative electrode of first sustained diode 1 as PFC boost unit 20 output end, and first afterflow
The negative electrode of diode D1 connects the positive pole of the second electrochemical capacitor C2, and the negative pole of the second electrochemical capacitor C2 connects front end ground.
In above-mentioned PFC boost unit 20, when AC-input voltage samples AC voltages, PFC enters boost mode, to carry
AC high turns the PF values that AC is intelligently depressured conversion topologies circuit.Specific boosting principle is as follows：When Q5 is turned on, the electric current on C1 is through rising
Voltage inductance L2, Q5 to GND form loop, boost inductance L2 storage energy；Can be formed when Q5 is turned off, on boost inductance than input
The much higher induced electromotive force of voltage, induced electromotive force forms unidirectional pulse voltage and gives C2 again after carrying out rectification through continued flow tube D1
Electric capacity enters filter and energy storage.And Q5 is that the input AC sine wave adopted according to control chip changes to increase or reduce leading for Q5
Logical time, so that electric current is consistent with voltage-phase change to improve PF values.Filtered voltage directly enters filter through L2, D1 to C2 electric capacity
And energy storage.
In order to realize PWM controls, the present embodiment also includes a MCU control unit 80, the grid of the first switch pipe Q6
The grid of pole and the 3rd switching tube Q5 is connected to MCU control unit 80, and the MCU control unit 80 is used to export respectively
Pwm signal to first switch pipe Q6 and the 3rd switching tube Q5, to control first switch pipe Q6 and the 3rd switching tube Q5 on off operating modes.
Further, the MCU control unit 80 includes single-chip microcomputer U1 and its peripheral circuit.
For the ease of monitoring the electric signal of AC, the present embodiment also includes an AC sampling unit 70, the exchange
Sampling unit 70 is connected between the input of input block 10 and MCU control unit 80, and the AC sampling unit 70 is used for
Gather the voltage of the AC of input block 10 and feed back to MCU control unit 80.Further, the AC sampling unit 70 is wrapped
Amplifier U9B is included, two inputs of the amplifier U9B are connected to the input of input block 10 by current-limiting resistance respectively
End, the output end of the amplifier U9B is connected to MCU control unit 80.
For the ease of carrying out Real-time Collection to electric current, is connected between the source electrode and front end ground of the 3rd switching tube Q5
One sampling resistor R2A, the source electrode of the 3rd switching tube Q5 is connected to MCU control unit 80, by first sampling resistor
R2A and make MCU control unit 80 gather the 3rd switching tube Q5 source electrodes electric signal.
Used as a kind of preferred embodiment, in order to be acquired to DC side electric signal, the present embodiment also includes a D/C voltage
Sampling unit 40, the D/C voltage sampling unit 40 includes the second sampling resistor R13 and the 3rd sampling resistor being sequentially connected in series
The front end of R15, the second sampling resistor R13 is connected to the negative electrode of the first commutation diode D5, the 3rd sampling resistor R15
Rear end be connected to MCU control unit 80, make MCU controls by the second sampling resistor R13 and the 3rd sampling resistor R15
The electric signal of the output of the collection flyback isolated converter of unit 80 unit 30.
On Converting Unit, the inversion reversed phase unit 60 includes the 4th switching tube Q1, the 5th switching tube Q2, the 6th opens
Close the inverter bridge of pipe Q3 and the 7th switching tube Q4 compositions, the grid of the 4th switching tube Q1, the grid of the 5th switching tube Q2, the
The grid of six switching tube Q3 and the grid of the 7th switching tube Q4 are connected to MCU control unit 80, are controlled by the MCU single
Unit 80 and control the 4th switching tube Q1, the 5th switching tube Q2, the 6th switching tube Q3 and the 7th switching tube Q4 on or off, to make
The output AC voltage of inversion reversed phase unit 60.
In above-mentioned inversion reversed phase unit 60, loop is formed to load through Q1, load, Q4 by the filtered DC voltages of C3
Power supply forms first half period power frequency level；Second half period power frequency level forms loop by Q2, load, Q3, so
A complete power frequency amendment alternating current wave pressure is formed in load.The pwm signal of control chip U1 outputs is through driving electricity
The GATE poles of PWM1H, PWM1L, PWM2H, PWM2L to Q1, Q2, Q3, Q4 are sent out behind road respectively.Phase in inversion phase inverter
It is operated according to the pattern of control chip inner setting with frequency.
Compared to existing technologies, first, the present invention has PF values high, realizes power network and isolates with output end, security
It is very high, meanwhile, output voltage, and fixed output frequency can be automatically adjusted in input full voltage range, it is again, defeated
It is to correct ripple output, automatic shaping function be pressed with to alternating current, additionally, the present invention program contains voltage being adopted with electric current to go out voltage
Sample circuit, can anti-surge voltage and electric current.
The above is preferred embodiments of the present invention, is not intended to limit the invention, all in technology model of the invention
Interior done modification, equivalent or improvement etc. are enclosed, be should be included in the range of of the invention protection.
Claims (10)
1. a kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges, it is characterised in that include：
One input block, for exporting DC voltage；
One PFC boost unit, is connected to the output end of input block, and carrying out boosting for the output voltage to input block turns
Change；
One flyback isolated converter unit, includes first switch pipe, transformer, the first commutation diode and the first electrolysis electricity
Hold, the first end of the transformer primary side winding is connected to the output end of PFC boost unit, the of the transformer primary side winding
Two ends are connected to the drain electrode of first switch pipe, and the source electrode of the first switch pipe connects front end ground, the grid of the first switch pipe
For accessing pwm signal, the first end of the transformer secondary winding is connected to the anode of the first commutation diode, described first
The negative electrode of commutation diode connects the positive pole of the first electrochemical capacitor, and the negative pole of first electrochemical capacitor connects rear end ground, the change
The second termination back-end ground of depressor vice-side winding, the negative electrode of first commutation diode is used as flyback isolated converter unit
Output end；
One inversion reversed phase unit, is connected to the output end of flyback isolated converter unit, and the inversion reversed phase unit is used for anti-
The output voltage of sharp isolated converter unit exports alternating current after carrying out inversion conversion.
2. the intelligent amendment wave voltage change-over circuit of PFC flyback full-bridges is based on as claimed in claim 1, it is characterised in that
The flyback isolated converter unit also includes first resistor, the first electric capacity and the second commutation diode, the first resistor
It is connected between the negative electrode of the first end of transformer secondary winding and the second commutation diode, the sun of second commutation diode
Pole is connected to the second end of transformer secondary winding, and first electric capacity is parallel to first resistor.
3. the intelligent amendment wave voltage change-over circuit of PFC flyback full-bridges is based on as claimed in claim 1, it is characterised in that
The flyback isolated converter unit also includes second resistance and pull down resistor, and the second resistance is connected to first switch pipe
Source electrode and front end ground between, the pull down resistor is connected between the grid of first switch pipe and source electrode.
4. the intelligent amendment wave voltage change-over circuit of PFC flyback full-bridges is based on as claimed in claim 1, it is characterised in that
The input block includes socket, insurance, lightning protection resistance, common mode inhibition inductance, safety electric capacity and rectifier bridge, the insurance string
It is connected on the zero line of socket or live wire, the front end of the common mode inhibition inductance is parallel to socket, and the lightning protection resistance is parallel to altogether
The input of the front end of mould suppression inductance, the safety electric capacity and rectifier bridge is parallel to the rear end of common mode inhibition inductance, described
The output end of rectifier bridge is parallel with filter capacitor.
5. the intelligent amendment wave voltage change-over circuit of PFC flyback full-bridges is based on as claimed in claim 1, it is characterised in that
The PFC boost unit includes boost inductance, the 3rd switching tube, the first fly-wheel diode and the second electrochemical capacitor, the liter
The front end of voltage inductance is connected to the output end of input block, and the rear end of the boost inductance is connected to the drain electrode of the 3rd switching tube,
The source electrode of the 3rd switching tube connects front end ground, and the grid of the 3rd switching tube is used to access pwm control signal all the way, described
The anode of drain electrode first fly-wheel diode of connection of the 3rd switching tube, the negative electrode of first fly-wheel diode is used as PFC boost
The output end of unit, and the negative electrode of first fly-wheel diode connects the positive pole of the second electrochemical capacitor, the second electrochemical capacitor it is negative
Pole connects front end ground.
6. the intelligent amendment wave voltage change-over circuit of PFC flyback full-bridges is based on as claimed in claim 5, it is characterised in that
A MCU control unit is also included, the grid of the first switch pipe and the grid of the 3rd switching tube are connected to MCU controls
Unit, the MCU control unit is used to distinguish output pwm signal to first switch pipe and the 3rd switching tube, to control first to open
Close pipe and the 3rd switching tube on off operating mode.
7. the intelligent amendment wave voltage change-over circuit of PFC flyback full-bridges is based on as claimed in claim 6, it is characterised in that
The MCU control unit includes single-chip microcomputer and its peripheral circuit.
8. the intelligent amendment wave voltage change-over circuit of PFC flyback full-bridges is based on as claimed in claim 6, it is characterised in that
Also include an AC sampling unit, the AC sampling unit be connected to input block input and MCU control unit it
Between, the AC sampling unit is used to gather the voltage of input block AC and feed back to MCU control unit.
9. the intelligent amendment wave voltage change-over circuit of PFC flyback full-bridges is based on as claimed in claim 8, it is characterised in that
The AC sampling unit includes amplifier, and two inputs of the amplifier are connected to input list by current-limiting resistance respectively
The input of unit, the output end of the amplifier is connected to MCU control unit.
10. the intelligent amendment wave voltage change-over circuit of PFC flyback full-bridges is based on as claimed in claim 6, it is characterised in that
The first sampling resistor is connected between the source electrode and front end ground of the 3rd switching tube, the source electrode of the 3rd switching tube is connected to
MCU control unit, makes MCU control unit gather the electric signal of the 3rd switching tube source electrode by first sampling resistor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611160714.4A CN106787794A (en) | 2016-12-15 | 2016-12-15 | A kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges |
| PCT/CN2017/079186 WO2018107620A1 (en) | 2016-12-15 | 2017-04-01 | Pfc flyback full bridge-based smart correction wave voltage conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611160714.4A CN106787794A (en) | 2016-12-15 | 2016-12-15 | A kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges |
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| CN106787794A true CN106787794A (en) | 2017-05-31 |
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| CN201611160714.4A Pending CN106787794A (en) | 2016-12-15 | 2016-12-15 | A kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges |
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| WO (1) | WO2018107620A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018107621A1 (en) * | 2016-12-15 | 2018-06-21 | 广东百事泰电子商务股份有限公司 | Smart sine wave voltage conversion circuit based on pfc flyback full bridge |
| CN113794368A (en) * | 2021-09-14 | 2021-12-14 | 珠海格力电器股份有限公司 | Flyback switching power supply control device and method and flyback switching power supply |
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| CN109560710B (en) * | 2018-12-29 | 2024-06-14 | 惠州三华工业有限公司 | Positive DC superposition circuit |
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| CN112366923A (en) * | 2020-12-02 | 2021-02-12 | 北京大华无线电仪器有限责任公司 | Isolated voltage sampling device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040012343A1 (en) * | 2002-07-19 | 2004-01-22 | Nostwick Allan Albert | Lighting control system with variable arc control including start-up circuit for providing a bias voltage supply |
| CN101902137A (en) * | 2009-05-29 | 2010-12-01 | 索尼公司 | Supply unit |
| CN105006957A (en) * | 2015-08-14 | 2015-10-28 | 南京理工大学 | Device and method for suppressing input current ripple of single-phase interleaving flyback inverter |
| CN206332617U (en) * | 2016-12-15 | 2017-07-14 | 广东百事泰电子商务股份有限公司 | A kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817288Y (en) * | 2005-08-15 | 2006-09-13 | 袁荣荣 | High-strength gas discharge lamp electronic ballst |
| WO2010082172A1 (en) * | 2009-01-14 | 2010-07-22 | Nxp B.V. | Pfc with high efficiency at low load |
| CN203722501U (en) * | 2013-12-10 | 2014-07-16 | 美固电子(深圳)有限公司 | Inverting control circuit of corrective wave vehicle-mounted inverter and corrective wave vehicle-mounted inverter |
| CN106533193A (en) * | 2016-12-14 | 2017-03-22 | 广东百事泰电子商务股份有限公司 | PFC dual-full-bridge-based intelligent sine wave voltage conversion circuit |
-
2016
- 2016-12-15 CN CN201611160714.4A patent/CN106787794A/en active Pending
-
2017
- 2017-04-01 WO PCT/CN2017/079186 patent/WO2018107620A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040012343A1 (en) * | 2002-07-19 | 2004-01-22 | Nostwick Allan Albert | Lighting control system with variable arc control including start-up circuit for providing a bias voltage supply |
| CN101902137A (en) * | 2009-05-29 | 2010-12-01 | 索尼公司 | Supply unit |
| CN105006957A (en) * | 2015-08-14 | 2015-10-28 | 南京理工大学 | Device and method for suppressing input current ripple of single-phase interleaving flyback inverter |
| CN206332617U (en) * | 2016-12-15 | 2017-07-14 | 广东百事泰电子商务股份有限公司 | A kind of intelligent amendment wave voltage change-over circuit based on PFC flyback full-bridges |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107621A1 (en) * | 2016-12-15 | 2018-06-21 | 广东百事泰电子商务股份有限公司 | Smart sine wave voltage conversion circuit based on pfc flyback full bridge |
| CN113794368A (en) * | 2021-09-14 | 2021-12-14 | 珠海格力电器股份有限公司 | Flyback switching power supply control device and method and flyback switching power supply |
| CN113794368B (en) * | 2021-09-14 | 2023-10-27 | 珠海格力电器股份有限公司 | Control device and method of flyback switching power supply and flyback switching power supply |
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| WO2018107620A1 (en) | 2018-06-21 |
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