CN106787754A - Intelligent amendment wave voltage change-over circuit based on PFC interleaving inverse excitation full-bridges - Google Patents
Intelligent amendment wave voltage change-over circuit based on PFC interleaving inverse excitation full-bridges Download PDFInfo
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- CN106787754A CN106787754A CN201611226332.7A CN201611226332A CN106787754A CN 106787754 A CN106787754 A CN 106787754A CN 201611226332 A CN201611226332 A CN 201611226332A CN 106787754 A CN106787754 A CN 106787754A
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
-
- 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)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of intelligent amendment wave voltage change-over circuit based on PFC interleaving inverse excitation full-bridges, it is included：Input block；PFC boost unit；Interleaving inverse excitation isolated variable unit, it includes first switch pipe, second switch pipe, first transformer, second transformer, second commutation diode and the 3rd commutation diode, the first end of the first end of the first primary winding and the second primary winding is all connected to the output end of PFC boost unit, second end of the first primary winding is connected to the drain electrode of first switch pipe, second end of the second primary winding is connected to the drain electrode of second switch pipe, the negative electrode of second commutation diode and the negative electrode of the 3rd commutation diode be connected after as interleaving inverse excitation isolated variable unit output end；DC filter units；Inversion reversed phase unit.The present invention can reduce ripple interference and improve output voltage quality.
Description
Technical field
The present invention relates to voltage conversion circuit, more particularly to a kind of intelligent amendment ripple based on PFC interleaving inverse excitation full-bridges
Voltage conversion 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, voltage
Change-over circuit is its Key Circuit, is a kind of circuit that can realize AC-AC conversion, can realize buck in AC-AC conversion
And the function of burning voltage and frequency.But current AC-AC just most of meaningful formula equipment Market be non-isolation type topology electricity
Road, and PF values are low, output voltage quality is low, security reliability is poor.Particularly during voltage conversion, more line can be produced
Wave interference, and then influence quality of voltage.
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 a kind of to reduce circuit
Ripple, the PF values that voltage conversion device can be improved, output voltage quality can be improved, and safe and reliable be interlocked instead based on PFC
Swash the intelligent amendment wave voltage change-over circuit of full-bridge.
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 interleaving inverse excitation full-bridges, it is included：One input is single
Unit, for providing DC voltage；One PFC boost unit, is connected to the output end of input block, for the output to input block
Voltage carries out boost conversion；One interleaving inverse excitation isolated variable unit, includes first switch pipe, second switch pipe, the first transformation
Device, the second transformer, the second commutation diode and the 3rd commutation diode, the first end of the first primary winding and
The first end of the second primary winding is all connected to the output end of PFC boost unit, the first primary winding
The second end be connected to the drain electrode of first switch pipe, the second end of the second primary winding is connected to second switch pipe
Drain electrode, the source electrode of the first switch pipe and the source electrode of second switch pipe be all connected to front end ground, the first switch pipe
The grid of grid and second switch pipe is used to accessing the pwm pulse signal of two-way opposite in phase, first transformer secondary output around
The first end of group is connected to the anode of the second commutation diode, and the first end of the second transformer secondary output winding is connected to the 3rd
Second end of the anode of commutation diode, the second end of the first transformer secondary output winding and the second transformer secondary output winding is equal
Rear end ground is connected to, the negative electrode of second commutation diode and the negative electrode of the 3rd commutation diode are anti-as interlocking after being connected
Swash the output end of isolated variable unit；One DC filter units, include the first electrochemical capacitor, the positive pole of first electrochemical capacitor
The output end of interleaving inverse excitation isolated variable unit is connected to, the negative pole of first electrochemical capacitor is connected to rear end ground；One inversion
Reversed phase unit, is connected to the output end of interleaving inverse excitation isolated variable unit, the inversion reversed phase unit be used for interleaving inverse excitation every
From the output voltage of converter unit carry out inversion conversion after export alternating current.
Preferably, the interleaving inverse excitation isolated variable unit also includes the first fly-wheel diode, first resistor and first
Electric capacity, the anode of first fly-wheel diode is connected to the drain electrode of first switch pipe, the negative electrode of first fly-wheel diode
The output end of PFC boost unit is connected to by first resistor, first electric capacity is parallel to first resistor.
Preferably, the interleaving inverse excitation isolated variable unit also includes the second fly-wheel diode, second resistance and second
Electric capacity, the anode of second fly-wheel diode is connected to the drain electrode of second switch pipe, the negative electrode of second fly-wheel diode
The output end of PFC boost unit is connected to by second resistance, second electric capacity is parallel to second resistance.
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 commutation 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 commutation diode of connection of the 3rd switching tube, first commutation diode
Negative electrode as PFC boost unit output end, and the negative electrode of first commutation diode connects the positive pole of the second electrochemical capacitor, the
The negative pole of two electrochemical capacitors connects front end ground.
Preferably, also include a MCU control unit, the grid of the first switch pipe, the grid of second switch pipe and
The grid of the 3rd switching tube is connected to MCU control unit, and the MCU control unit is used to distinguishing output pwm signal to the
One switching tube, second switch pipe and the 3rd switching tube, to control first switch pipe, second switch pipe and the 3rd switching tube break-make shape
State.
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 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.
Preferably, a D/C voltage sampling unit is also included, the D/C voltage sampling unit includes for being sequentially connected in series
Two sampling resistors and the 3rd sampling resistor, the front end of second sampling resistor are connected to the defeated of interleaving inverse excitation isolated variable unit
Go out end, the rear end of the 3rd sampling resistor is connected to MCU control unit, by second sampling resistor and the 3rd sampling electricity
Hinder and make MCU control unit gather the electric signal of interleaving inverse excitation isolated variable unit output.
Preferably, the inversion reversed phase unit includes being opened by the 4th switching tube, the 5th switching tube, the 6th switching tube and the 7th
Close the inverter bridge of pipe composition, grid, the grid of the 5th switching tube, the grid and the 7th of the 6th switching tube of the 4th switching tube
The grid of switching tube is connected to MCU control unit, controls the 4th switching tube, the 5th to open by the MCU control unit
Guan Guan, the 6th switching tube and the 7th switching tube on or off, to make the inversion reversed phase unit output AC voltage.
In intelligent amendment wave voltage change-over circuit based on PFC interleaving inverse excitation full-bridges disclosed by the invention, using PFC liters
Pressure unit carries out boosting treatment to the DC voltage that input block is exported, and exports afterwards to interleaving inverse excitation isolated variable unit, its
Middle first switch pipe, second switch pipe are staggeredly turned on, the second switch pipe cut-off when first switch pipe is turned on, and electric current is by the
One primary winding, first switch pipe form loop to front end ground, and the first primary winding starts reserves；When second
When switching tube is turned on, the cut-off of first switch pipe, electric current is by the second primary winding, second switch pipe, constitute back to front end
Road, the second primary winding starts energy storage, while the electric energy of the first primary winding is bonded to time by its magnetic core lotus root
After level winding, powered to the load through the second commutation diode；Then first switch pipe is turned on again, the cut-off of second switch pipe, the
One transformer energy storage, the second transformer secondary output winding is powered to the load by the 3rd commutation diode.Above-mentioned interleaving inverse excitation isolation
It is special in converter unit, as a result of the mode of interaction conducting so that current ripples in circuit are smaller, using relatively flexibly
It is not that, when loading smaller, need to only start a flyback and become circuit, meanwhile, EMI, EMC of foregoing circuit disturb smaller, electricity
Road working frequency is higher can to improve power density, additionally, can by changing the turn ratio of the first transformer and the second transformer
To change output voltage, and then realize boosting or be depressured.
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 interleaving inverse excitation full-bridges, with reference to Fig. 1
Shown in Fig. 3, it is included：
One input block 10, for providing 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 interleaving inverse excitation isolated variable unit 30, includes first switch pipe Q6, second switch pipe Q7, the first transformer
T1, the second transformer T2, the second commutation diode D7 and the 3rd commutation diode D8, the first transformer T1 armature windings
The first end of first end and the second transformer T2 armature windings is all connected to the output end of PFC boost unit 20, and described first becomes
Second end of depressor T1 armature windings is connected to the drain electrode of first switch pipe Q6, the second of the second transformer T2 armature windings
End is connected to the drain electrode of second switch pipe Q7, and the source electrode of the first switch pipe Q6 and the source electrode of second switch pipe Q7 are all connected to
Front end ground, the grid of the first switch pipe Q6 and the grid of second switch pipe Q7 are used to access the PWM arteries and veins of two-way opposite in phase
Signal is rushed, the first end of the first transformer T1 secondary windings is connected to the anode of the second commutation diode D7, described second
The first end of transformer T2 secondary windings is connected to the anode of the 3rd commutation diode D8, the first transformer T1 secondary windings
The second end and the second transformer T2 secondary windings the second end be all connected to rear end ground, the moon of the second commutation diode D7
Pole be connected with the negative electrode of the 3rd commutation diode D8 after as interleaving inverse excitation isolated variable unit 30 output end；
One DC filter units 40, include the first electrochemical capacitor C3, and the positive pole of the first electrochemical capacitor C3 is connected to friendship
The output end of wrong flyback isolated variable unit 30, the negative pole of the first electrochemical capacitor C3 is connected to rear end ground；
One inversion reversed phase unit 60, is connected to the output end of interleaving inverse excitation isolated variable unit 30, the inversion paraphase list
Unit 60 is used to export alternating current after carrying out inversion conversion to the output voltage of interleaving inverse excitation isolated variable unit 30.
In above-mentioned amendment wave voltage change-over circuit, the DC voltage exported to input block 10 using PFC boost unit 20
Boosting treatment is carried out, is exported afterwards to interleaving inverse excitation isolated variable unit 30, wherein first switch pipe Q6, second switch pipe Q7 are
Staggeredly turn on, the second switch pipe Q7 cut-offs when first switch pipe Q6 is turned on, electric current is by the first transformer T1 armature windings, the
One switching tube Q6 forms loop to front end ground, and the first transformer T1 armature windings start reserves；When second switch pipe Q7 is turned on,
First switch pipe Q6 end, electric current by the second transformer T2 armature windings, second switch pipe Q7, constitute to front end loop, second
Transformer T2 armature windings start energy storage, at the same the electric energy of the first transformer T1 armature windings by its magnetic core lotus root be bonded to it is secondary around
After group, powered to the load through the second commutation diode D7；Then first switch pipe Q6 is turned on again, second switch pipe Q7 cut-offs,
First transformer T1 energy storage, the second transformer T2 secondary windings is powered to the load by the 3rd commutation diode D8.It is above-mentioned to interlock
In flyback isolated variable unit 30, as a result of the mode of interaction conducting so that current ripples in circuit are smaller, using than
Relatively flexibly, particularly when loading smaller, need to only start a flyback and become circuit, meanwhile, EMI, EMC of foregoing circuit do
Disturb that smaller, circuit work frequency is higher can to improve power density, additionally, by changing the first transformer T1 and the second transformer
The turn ratio of T2 can change output voltage, and then realize boosting or be depressured.First switch pipe Q6 and second in the present embodiment
Switching tube Q7 is to modulate high-frequency PWM signal with power frequency, and makes first switch pipe Q6 and second switch pipe Q7 according to sinusoidal change
Change characteristic to adjust output voltage.
As a kind of preferred embodiment, as shown in figure 1, the interleaving inverse excitation isolated variable unit 30 also includes the first afterflow
Diode D6, first resistor R26 and the first electric capacity C5, the anode of first sustained diode 6 are connected to first switch pipe Q6
Drain electrode, the negative electrode of first sustained diode 6 is connected to the output end of PFC boost unit 20 by first resistor R26,
The first electric capacity C5 is parallel to first resistor R26.The interleaving inverse excitation isolated variable unit 30 also includes the second afterflow two
Pole pipe D5, second resistance R27 and the second electric capacity C6, the anode of second sustained diode 5 are connected to second switch pipe Q7's
Drain electrode, the negative electrode of second sustained diode 5 is connected to the output end of PFC boost unit 20, institute by second resistance R27
State the second electric capacity C6 and be parallel to second resistance R27.
In foregoing circuit, the second sustained diode 5, the first sustained diode 6, first resistor R26, second resistance R27,
First electric capacity C5, the second electric capacity C6 are respectively first switch pipe Q6, the attraction circuit of second switch pipe Q7, for absorbing the first change
The peak voltage that depressor T1, the leakage inductance of the second transformer T1 are produced, to subtract the voltage stress of switching tube.
Line voltage is converted to DC voltage so that subsequent conditioning circuit is used, specifically by the present embodiment in importation
Refer to, the input block 10 include socket, insurance F2, lightning protection resistance RV1, common mode inhibition inductance L1, safety electric capacity CX1 and
Rectifier bridge DB1, the insurance F2 are serially connected with the zero line of socket or live wire, and the front end of the common mode inhibition inductance L1 is parallel to slotting
Seat, the lightning protection resistance RV1 is parallel to the front end of common mode inhibition inductance L1, the input of the safety electric capacity CX1 and rectifier bridge DB1
End is parallel to the rear end of common mode inhibition inductance L1, and the output end of the rectifier bridge DB1 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 rectification
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 rectification two
The anode of pole pipe D1, the negative electrode of the first commutation diode D1 as PFC boost unit 20 output end, and first rectification
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.
Above-mentioned PFC boost unit 20, when filter capacitor C1 output half-wave alternating voltages are sampled, PFC enters liter pressing mold
Formula, the PF values that AC is intelligently depressured conversion topologies circuit are turned to improve AC, and the second filtered electricity of electrochemical capacitor C2 is passed through after boosting
It is 400V to press, and specific boosting principle is as follows：When 3rd switching tube Q5 is turned on, the boosted inductance of electric current on filter capacitor C1
L2, the 3rd switching tube Q5 to GND form loop, boost inductance L2 storage energy；When the 3rd switching tube Q5 is turned off, boost inductance
On can form the induced electromotive force more much higher than input voltage, induced electromotive force carry out rectification through the first commutation diode D1 after shape
The second electrochemical capacitor C2 electric capacity is given again into unidirectional pulse voltage and enters filtering, be filtered into the DC voltage of 400V.And the 3rd opens
When pass pipe Q5 is that the input AC sine wave adopted according to control chip changes to increase or reduce the conducting of the 3rd switching tube Q5
Between, so that electric current is with voltage-phase change consistent to improve PF values.
Used as a kind of preferred embodiment, the present embodiment also includes a MCU control unit 80, the grid of the first switch pipe Q6
The grid of pole, the grid of second switch pipe Q7 and the 3rd switching tube Q5 is connected to MCU control unit 80, the MCU controls
Unit 80 is used to distinguish output pwm signal to first switch pipe Q6, second switch pipe Q7 and the 3rd switching tube Q5, to control first
Switching tube Q6, second switch pipe Q7 and the 3rd switching tube Q5 on off operating modes.Further, the MCU control unit 80 is included
Single-chip microcomputer U1 and its peripheral circuit.
For the ease of monitoring the electric signal of AC, as shown in Fig. 2 also including an AC sampling unit 70, the friendship
Stream 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
In collection the AC of input block 10 voltage and feed back to MCU control unit 80.On the specific of the AC sampling unit 70
Composition, two inputs that the AC sampling unit 70 includes amplifier U9B, the amplifier U9B pass through current-limiting resistance respectively
And the input of input block 10 is connected to, 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 50, the D/C voltage sampling unit 50 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 output end of interleaving inverse excitation isolated variable unit 30, and the described 3rd adopts
The rear end of sample resistance R15 is connected to MCU control unit 80, by the second sampling resistor R13 and the 3rd sampling resistor R15
MCU control unit 80 is made to gather the electric signal of the output of interleaving inverse excitation isolated variable unit 30.
On Converting Unit, Fig. 3 is refer to, the inversion reversed phase unit 60 is included by the 4th switching tube Q1, the 5th switch
The inverter bridge of pipe Q2, the 6th switching tube Q3 and the 7th switching tube Q4 compositions, grid, the 5th switching tube of the 4th switching tube Q1
The grid of the grid of Q2, the grid of the 6th switching tube Q3 and the 7th switching tube Q4 is connected to MCU control unit 80, by institute
State MCU control 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 conducting
Or cut-off, to make the output AC voltage of inversion reversed phase unit 60.
In above-mentioned inversion reversed phase unit 60, by the first filtered DC voltages of electrochemical capacitor C3 through the 4th switching tube
Q1, load, the 7th switching tube Q4 form loop powering load and form first half period power frequency level；Second half period work
Frequency level forms loop by the 5th switching tube Q2, load, the 6th switching tube Q3, and one is so formed in load completely
Power frequency amendment alternating current wave pressure.Single-chip microcomputer U1 output pwm signal sent out respectively after drive circuit PWM1H, PWM1L,
PWM2H, PWM2L give the 4th switching tube Q1, the 5th switching tube Q2, the 6th switching tube Q3, the GATE poles of the 7th switching tube Q4.Inversion
Phase in phase inverter is operated with frequency according to the pattern of control chip inner setting.
Intelligent amendment wave voltage change-over circuit based on PFC interleaving inverse excitation full-bridges disclosed by the invention, it compares existing
There is PF values high, power network to isolate with output end for technology, security it is very high, DC and DC units use interworking mode
EMC, EMI disturb small, power application flexible.Output voltage can be automatically adjusted in input full voltage range, and it is fixed
Output frequency, and output voltage is to correct ripple output, automatic shaping function be pressed with to alternating current, additionally, the present invention contains
Voltage and current sampling circuit, can effectively 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 interleaving inverse excitation full-bridges, it is characterised in that include：
One input block (10), for providing DC voltage；
One PFC boost unit (20), is connected to the output end of input block (10), for the output voltage to input block (10)
Carry out boost conversion；
One interleaving inverse excitation isolated variable unit (30), includes first switch pipe (Q6), second switch pipe (Q7), the first transformer
(T1), the second transformer (T2), the second commutation diode (D7) and the 3rd commutation diode (D8), first transformer (T1)
The first end of the first end of armature winding and the second transformer (T2) armature winding is all connected to the output of PFC boost unit (20)
End, the second end of the first transformer (T1) armature winding is connected to the drain electrode of first switch pipe (Q6), second transformation
Second end of device (T2) armature winding is connected to the drain electrode of second switch pipe (Q7), the source electrode of the first switch pipe (Q6) and
The source electrode of two switching tubes (Q7) is all connected to front end ground, the grid of the first switch pipe (Q6) and the grid of second switch pipe (Q7)
Pole is used to access the pwm pulse signal of two-way opposite in phase, and the first end of the first transformer (T1) secondary windings is connected to
The anode of the second commutation diode (D7), the first end of the second transformer (T2) secondary windings is connected to the pole of the 3rd rectification two
Manage the anode of (D8), the second end of the first transformer (T1) secondary windings and the second of the second transformer (T2) secondary windings
End is all connected to rear end ground, and the negative electrode of second commutation diode (D7) and the negative electrode of the 3rd commutation diode (D8) are connected
Afterwards as the output end of interleaving inverse excitation isolated variable unit (30)；
One DC filter units (40), include the first electrochemical capacitor (C3), and the positive pole of first electrochemical capacitor (C3) is connected to
The output end of interleaving inverse excitation isolated variable unit (30), the negative pole of first electrochemical capacitor (C3) is connected to rear end ground；
One inversion reversed phase unit (60), is connected to the output end of interleaving inverse excitation isolated variable unit (30), the inversion paraphase list
First (60) export alternating current after carrying out inversion conversion for the output voltage to interleaving inverse excitation isolated variable unit (30).
2. the intelligent amendment wave voltage change-over circuit of PFC interleaving inverse excitation full-bridges is based on as claimed in claim 1, and its feature exists
In the interleaving inverse excitation isolated variable unit (30) also includes the first fly-wheel diode (D6), first resistor (R26) and first
Electric capacity (C5), the anode of first fly-wheel diode (D6) is connected to the drain electrode of first switch pipe (Q6), first afterflow
The negative electrode of diode (D6) is connected to the output end of PFC boost unit (20), first electric capacity by first resistor (R26)
(C5) it is parallel to first resistor (R26).
3. the intelligent amendment wave voltage change-over circuit of PFC interleaving inverse excitation full-bridges is based on as claimed in claim 1, and its feature exists
In the interleaving inverse excitation isolated variable unit (30) also includes the second fly-wheel diode (D5), second resistance (R27) and second
Electric capacity (C6), the anode of second fly-wheel diode (D5) is connected to the drain electrode of second switch pipe (Q7), second afterflow
The negative electrode of diode (D5) is connected to the output end of PFC boost unit (20), second electric capacity by second resistance (R27)
(C6) it is parallel to second resistance (R27).
4. the intelligent amendment wave voltage change-over circuit of PFC interleaving inverse excitation full-bridges is based on as claimed in claim 1, and its feature exists
In the input block (10) includes socket, insurance (F2), lightning protection resistance (RV1), common mode inhibition inductance (L1), safety electricity
Hold (CX1) and rectifier bridge (DB1), the insurance (F2) is serially connected with the zero line of socket or live wire, the common mode inhibition inductance
(L1) front end is parallel to socket, and the lightning protection resistance (RV1) is parallel to the front end of common mode inhibition inductance (L1), the safety electricity
The input of appearance (CX1) and rectifier bridge (DB1) is parallel to the rear end of common mode inhibition inductance (L1), the rectifier bridge (DB1)
Output end is parallel with filter capacitor (C1).
5. the intelligent amendment wave voltage change-over circuit of PFC interleaving inverse excitation full-bridges is based on as claimed in claim 1, and its feature exists
In, the PFC boost unit (20) include boost inductance (L2), the 3rd switching tube (Q5), the first commutation diode (D1) and
Second electrochemical capacitor (C2), the front end of the boost inductance (L2) is connected to the output end of input block (10), described liter of piezoelectricity
The rear end for feeling (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, described
The grid of the 3rd switching tube (Q5) is used to access pwm control signal all the way, the drain electrode connection first of the 3rd switching tube (Q5)
The anode of commutation diode (D1), the negative electrode of first commutation diode (D1) as PFC boost unit (20) output end,
And the negative electrode of first commutation diode (D1) connects the positive pole of the second electrochemical capacitor (C2), the negative pole of the second electrochemical capacitor (C2)
Connect front end ground.
6. the intelligent amendment wave voltage change-over circuit of PFC interleaving inverse excitation full-bridges is based on as claimed in claim 5, and its feature exists
In, also include a MCU control unit (80), the grid of the first switch pipe (Q6), the grid of second switch pipe (Q7) and
The grid of the 3rd switching tube (Q5) is connected to MCU control unit (80), and the MCU control unit (80) for exporting respectively
Pwm signal to first switch pipe (Q6), second switch pipe (Q7) and the 3rd switching tube (Q5), with control first switch pipe (Q6),
Second switch pipe (Q7) and the 3rd switching tube (Q5) on off operating mode.
7. the intelligent amendment wave voltage change-over circuit of PFC interleaving inverse excitation full-bridges is based on as claimed in claim 6, and its feature exists
In, an AC sampling unit (70) is also included, the AC sampling unit (70) is connected to the input of input block (10)
Between MCU control unit (80), the AC sampling unit (70) for gather input block (10) AC voltage simultaneously
Feed back to MCU control unit (80).
8. the intelligent amendment wave voltage change-over circuit of PFC interleaving inverse excitation full-bridges is based on as claimed in claim 6, and its feature exists
In being connected with the first sampling resistor (R2A), the 3rd switching tube between the source electrode and front end ground of the 3rd switching tube (Q5)
(Q5) source electrode is connected to MCU control unit (80), and MCU control unit (80) is made by first sampling resistor (R2A)
Gather the electric signal of the 3rd switching tube (Q5) source electrode.
9. the intelligent amendment wave voltage change-over circuit of PFC interleaving inverse excitation full-bridges is based on as claimed in claim 6, and its feature exists
In, a D/C voltage sampling unit (50) is also included, the D/C voltage sampling unit (50) includes second for being sequentially connected in series and adopts
Sample resistance (R13) and the 3rd sampling resistor (R15), the front end of second sampling resistor (R13) are connected to interleaving inverse excitation isolation
The output end of converter unit (30), the rear end of the 3rd sampling resistor (R15) is connected to MCU control unit (80), by institute
State the second sampling resistor (R13) and the 3rd sampling resistor (R15) and make MCU control unit (80) gather interleaving inverse excitation isolated variable
The electric signal of unit (30) output.
10. the intelligent amendment wave voltage change-over circuit of PFC interleaving inverse excitation full-bridges, its feature are based on as claimed in claim 6
Be, the inversion reversed phase unit (60) including by the 4th switching tube (Q1), the 5th switching tube (Q2), the 6th switching tube (Q3) and
The inverter bridge of the 7th switching tube (Q4) composition, the grid of the 4th switching tube (Q1), grid, the 6th of the 5th switching tube (Q2)
The grid of the grid of switching tube (Q3) and the 7th switching tube (Q4) is connected to MCU control unit (80), is controlled by the MCU
Unit (80) processed 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 inversion reversed phase unit (60) output AC voltage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226332.7A CN106787754A (en) | 2016-12-27 | 2016-12-27 | Intelligent amendment wave voltage change-over circuit based on PFC interleaving inverse excitation full-bridges |
| PCT/CN2017/079188 WO2018120482A1 (en) | 2016-12-27 | 2017-04-01 | Pfc staggered flyback full bridge-based smart correction wave voltage conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226332.7A CN106787754A (en) | 2016-12-27 | 2016-12-27 | Intelligent amendment wave voltage change-over circuit based on PFC interleaving inverse excitation full-bridges |
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| CN106787754A true CN106787754A (en) | 2017-05-31 |
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|---|---|---|---|
| CN201611226332.7A Pending CN106787754A (en) | 2016-12-27 | 2016-12-27 | Intelligent amendment wave voltage change-over circuit based on PFC interleaving inverse excitation full-bridges |
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| Country | Link |
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| CN (1) | CN106787754A (en) |
| WO (1) | WO2018120482A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109802580A (en) * | 2019-03-08 | 2019-05-24 | 中国石油天然气集团有限公司 | A kind of Iarge Power DC Voltage Regulator for oil drilling tool |
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| CN112822820A (en) * | 2021-02-01 | 2021-05-18 | 郑州地铁集团有限公司运营分公司 | LED down lamp drive controller |
| CN113162393B (en) * | 2021-04-25 | 2023-12-22 | 西安领充创享新能源科技有限公司 | Power factor correction method, device, equipment and storage medium |
| CN116207811B (en) * | 2022-12-15 | 2024-04-05 | 苏州博沃创新能源科技有限公司 | 7kW bidirectional electric automobile off-vehicle direct current charging module |
| CN117277822B (en) * | 2023-11-20 | 2024-01-30 | 威胜能源技术股份有限公司 | Multi-output circuit for battery-changing cabinet and automatic current-sharing control method thereof |
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| WO2018120482A1 (en) | 2018-07-05 |
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