CN106787807A - Intelligent amendment wave voltage change-over circuit based on PFC, full-bridge and half-bridge - Google Patents

Intelligent amendment wave voltage change-over circuit based on PFC, full-bridge and half-bridge Download PDF

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Publication number
CN106787807A
CN106787807A CN201710003791.7A CN201710003791A CN106787807A CN 106787807 A CN106787807 A CN 106787807A CN 201710003791 A CN201710003791 A CN 201710003791A CN 106787807 A CN106787807 A CN 106787807A
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CN
China
Prior art keywords
switching tube
connected
bridge
unit
full
Prior art date
Application number
CN201710003791.7A
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Chinese (zh)
Inventor
廖志刚
Original Assignee
广东百事泰电子商务股份有限公司
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Priority to CN201710003791.7A priority Critical patent/CN106787807A/en
Publication of CN106787807A publication Critical patent/CN106787807A/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208Arrangements for improving power factor of AC input
    • H02M1/4225Arrangements for improving power factor of AC input using a non-isolated boost converter
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/22Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28Conversion 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
    • H02M3/325Conversion 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
    • H02M3/335Conversion 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
    • H02M3/33569Conversion 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40Conversion 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
    • H02M5/42Conversion 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
    • H02M5/44Conversion 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
    • H02M5/453Conversion 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
    • H02M5/458Conversion 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M2001/0067Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion
    • Y02B70/12Power factor correction technologies for power supplies
    • Y02B70/126Active technologies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy
    • Y02P80/11Efficient use of energy of electric energy
    • Y02P80/112Power supplies with power electronics for efficient use of energy, e.g. power factor correction [PFC] or resonant converters

Abstract

The invention discloses a kind of intelligent amendment wave voltage change-over circuit based on PFC, full-bridge and half-bridge, it is included:Input block;PFC boost unit;Full-bridge isolated variable unit, include first switch pipe, second switch pipe, 6th switching tube, 7th switching tube, transformer, first diode, second diode and filter inductance, the source electrode of the 6th switching tube is connected to the first end of primary winding, the drain electrode of the second switch pipe is connected to the second end of primary winding, the source electrode of the first switch pipe is connected to the second end of primary winding, the drain electrode of the 7th switching tube is connected to the first end of primary winding, the centre tap of the transformer secondary output winding is connected to rear end ground;Inversion reversed phase unit.The present invention can improve PF values and output voltage quality.

Description

Intelligent amendment wave voltage change-over circuit based on PFC, full-bridge and half-bridge

Technical field

The present invention relates to voltage conversion circuit, more particularly to a kind of intelligent amendment ripple electricity based on PFC, full-bridge and half-bridge 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.

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 can improve voltage conversion The PF values of device, output voltage quality can be improved, and the safe and reliable intelligent amendment ripple based on PFC, full-bridge and half-bridge Voltage conversion circuit.

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, full-bridge and half-bridge, it is included:One input block, For providing DC voltage;One PFC boost unit, is connected to the output end of input block, for the output electricity to input block Pressure carries out boost conversion;One full-bridge isolated variable unit, includes first switch pipe, second switch pipe, the 6th switching tube, the 7th Switching tube, transformer, the first diode, the second diode and filter inductance, the drain electrode of the 6th switching tube are connected to PFC liters The output end of unit is pressed, the source electrode of the 6th switching tube is connected to the first end of primary winding, the second switch The drain electrode of pipe is connected to the second end of primary winding, and the source electrode of the second switch pipe is connected to front end ground, and described the The drain electrode of one switching tube is connected to the output end of PFC boost unit, and the source electrode of the first switch pipe is connected to primary Second end of winding, the drain electrode of the 7th switching tube is connected to the first end of primary winding, the 7th switching tube Source electrode be connected to front end ground, the grid of the first switch pipe, the grid of second switch pipe, the grid of the 6th switching tube and the The grid of seven switching tubes is respectively used to access pwm pulse signal, and the centre tap of the transformer secondary output winding is connected to rear end Ground, the first end of the transformer secondary output winding is connected to the anode of the first diode, and the negative electrode of first diode passes through First capacitance connection is in rear end ground, and the negative electrode of first diode is connected to the front end of filter inductance, the transformer secondary output Second end of winding is connected to the negative electrode of the second diode, and the anode of second diode passes through the second capacitance connection in rear end Ground, the anode of the rear end of the filter inductance and the second diode as full-bridge isolated variable unit output end;One inversion is fallen Facies unit, is connected to the output end of full-bridge isolated variable unit, and the inversion reversed phase unit is used for full-bridge isolated variable unit Output voltage carry out inversion conversion after export alternating current.

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, a MCU control unit, grid, the grid of second switch pipe, of the first switch pipe are also included The grid of the grid of three switching tubes, the grid of the 6th switching tube and the 7th switching tube is connected to MCU control unit, described MCU control unit be used for distinguish output pwm signal to first switch pipe, second switch pipe, the 3rd switching tube, the 6th switching tube and 7th switching tube, to control the logical of first switch pipe, second switch pipe, the 3rd switching tube, the 6th switching tube and the 7th switching tube Disconnected 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 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 rectifying filter unit, 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.

Preferably, the second sampling resistor and the 3rd sampling resistor being sequentially connected in series, second sampling resistor are also included Front end be connected to the output end of the full-bridge isolated variable unit, the rear end of the 3rd sampling resistor is connected to MCU controls Unit, makes MCU control unit gather the full-bridge isolated variable list by second sampling resistor and the 3rd sampling resistor The electric signal of unit's output.

Preferably, the inversion reversed phase unit includes the 4th switching tube, the 5th switching tube, the 3rd electrochemical capacitor and the 4th Electrochemical capacitor, the drain electrode of the 4th switching tube is connected to the output head anode of full-bridge isolated variable unit, the 4th switch The source electrode of pipe is connected to the drain electrode of the 5th switching tube, and the source electrode of the 5th switching tube is connected to the defeated of full-bridge isolated variable unit Go out and hold negative pole, the grid of the 4th switching tube and the grid of the 5th switching tube are respectively used to access the PWM of two-way opposite in phase Pulse signal, the positive pole of the 3rd electrochemical capacitor is connected to the drain electrode of the 4th switching tube, the negative pole of the 3rd electrochemical capacitor Connection rear end ground, the negative pole of the 3rd electrochemical capacitor is also attached to the positive pole of the 4th electrochemical capacitor, the 4th electrochemical capacitor Negative pole be connected to the source electrode of the 5th switching tube, the source electrode of the 4th switching tube and the negative pole of the 3rd electrochemical capacitor are used as inversion The output end of reversed phase unit.

Preferably, first resistor is connected between the grid and source electrode of the 4th switching tube, the 5th switching tube Second resistance is connected between grid and source electrode.

In intelligent amendment wave voltage change-over circuit based on PFC, full-bridge and half-bridge 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 full-bridge isolated variable unit, in full-bridge In isolated variable unit, when first switch pipe and the 7th switching tube are turned on, electric current is by first switch pipe, primary line Circle, the 7th switching tube form loop to front end ground, and the voltage of primary winding is lower just upper negative, then by transformer magnetic Core lotus root is bonded to transformer secondary output, and the second diode sends the second capacitor filtering to by backward voltage, is formed on the second electric capacity On just lower negative DC voltage;When second switch pipe and the 6th switching tube are turned on, electric current is by second switch pipe, primary Coil, the 6th switching tube form loop to front end ground, and primary winding voltage is upper just lower negative, then by transformer magnetic Core lotus root is bonded to transformer secondary output, is at this moment forward voltage by the voltage of the first diode, and is sent to the first electric capacity, first Just lower negative DC voltage, is so formed generating positive and negative voltage on dc bus on being formed on electric capacity.Wherein, the first electric capacity, Second electric capacity and filter inductance composition filter circuit.And by changing the turn ratio of transformer primary and secondary, output electricity can be adjusted The height of pressure, and then realize boosting or step-down conversion.Based on said structure, the isolation that the present invention not only realizes voltage is passed It is defeated, so improve step-up/down conversion equipment PF values, also improve output voltage quality so that voltage conversion process is more It is safe and reliable.

Brief description of the drawings

Fig. 1 is the schematic diagram of present invention amendment 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, full-bridge and half-bridge, 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 full-bridge isolated variable unit 30, includes first switch pipe Q6, second switch pipe Q7, the 6th switching tube Q8, Seven switching tube Q9, transformer T1, the first diode D5, the second diode D6 and filter inductance L3, the 6th switching tube Q8's Drain electrode is connected to the output end of PFC boost unit 20, and the source electrode of the 6th switching tube Q8 is connected to transformer T1 armature windings First end, the drain electrode of the second switch pipe Q7 is connected to the second end of transformer T1 armature windings, the second switch pipe The source electrode of Q7 is connected to front end ground, and the drain electrode of the first switch pipe Q6 is connected to the output end of PFC boost unit 20, and described the The source electrode of one switching tube Q6 is connected to the second end of transformer T1 armature windings, and the drain electrode of the 7th switching tube Q9 is connected to change The first end of depressor T1 armature windings, the source electrode of the 7th switching tube Q9 is connected to front end ground, the first switch pipe Q6's Grid, the grid of second switch pipe Q7, the grid of the 6th switching tube Q8 and the grid of the 7th switching tube Q9 are respectively used to access PWM Pulse signal, the centre tap of the transformer T1 secondary windings is connected to rear end ground, and the of the transformer T1 secondary windings One end is connected to the anode of the first diode D5, and the negative electrode of the first diode D5 is connected to rear end by the first electric capacity C7 Ground, and the negative electrode of first diode D5 is connected to the front end of filter inductance L3, the second end of the transformer T1 secondary windings The negative electrode of the second diode D6 is connected to, the anode of the second diode D6 is connected to rear end ground, institute by the second electric capacity C8 State the output end of the rear end of filter inductance L3 and the anode of the second diode D6 as full-bridge isolated variable unit 30;

One inversion reversed phase unit 40, is connected to the output end of full-bridge isolated variable unit 30, the inversion reversed phase unit 40 Alternating current is exported after carrying out inversion conversion for the output voltage to full-bridge 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 full-bridge isolated variable unit 30, in full-bridge isolated variable unit 30, when first switch pipe When Q6 and the 7th switching tube Q9 is turned on, electric current is by first switch pipe Q6, transformer T1 primary coils, the 7th switching tube Q9 to front end Ground forms loop, and the voltage of transformer T1 armature windings is lower just upper negative, is then bonded to transformer by transformer T1 magnetic core lotus roots Secondary, the second diode D6 sends the second electric capacity C8 to and filters by backward voltage, forms just lower negative on the second electric capacity C8 DC voltage;When second switch pipe Q7 and the 6th switching tube Q8 is turned on, electric current is primary by second switch pipe Q7, transformer T1 Coil, the 6th switching tube Q8 form loop to front end ground, and transformer T1 primary winding voltages are upper just lower negative, then by transformation Device T1 magnetic core lotus roots are bonded to transformer secondary output, are at this moment forward voltage by the voltage of the first diode D5, and be sent to the first electricity Hold C7, just lower negative DC voltage is formed on the first electric capacity C7, generating positive and negative voltage is so formed on dc bus.Its In, the first electric capacity C7, the second electric capacity C8 and filter inductance L3 constitute filter circuit.And by changing the circle of transformer T1 primary and secondaries Number ratio, can adjust the height of output voltage, and then realize boosting or step-down conversion.Based on said structure, the present invention is not only The isolation transmission of voltage is realized, and then improves the PF values of step-up/down conversion equipment, also improve output voltage quality, made Obtain voltage conversion process more safe and reliable.

On importation, as shown in figure 1, 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.

In the present embodiment, the PFC boost unit 20 includes boost inductance L2, the 3rd switching tube Q5, the first rectification two The front end of pole pipe D1 and the second electrochemical capacitor C2, the boost inductance L2 is connected to the output end of input block 10, the boosting The rear end of 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, the described 3rd The grid of switching tube Q5 is used to access pwm control signal all the way, drain electrode connection the first rectification two pole of the 3rd switching tube Q5 The anode of pipe D1, the negative electrode of the first commutation diode D1 as PFC boost unit 20 output end, and first rectification two The negative electrode of pole pipe 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, if filter capacitor C1 output half-wave alternating voltages, PFC enters boost mode, to carry AC high turns the PF values that AC is intelligently depressured conversion topologies circuit, is by the second filtered voltages of electrochemical capacitor C2 after boosting 400V, specific boosting principle is as follows:When 3rd switching tube Q5 is turned on, the boosted inductance L2 of electric current on filter capacitor C1, the Three switching tube Q5 to GND form loop, boost inductance L2 storage energy;When the 3rd switching tube Q5 is turned off, meeting on boost inductance The induced electromotive force more much higher than input voltage is formed, induced electromotive force forms unidirectional pulse electricity after carrying out rectification through continued flow tube D1 Pressure is given the second electrochemical capacitor C2 electric capacity and enters filtering again, is filtered into the DC voltage of 400V.And the 3rd switching tube Q5 is basis The change of input AC amendment ripple that control chip is adopted increases or reduces the ON time of the 3rd switching tube Q5 so that electric current with Voltage-phase becomes unanimously to improve PF values.

As a kind of preferred embodiment, Fig. 3 is refer to, the present embodiment also includes a MCU control unit 80, and described first opens The grid of pipe Q6, the grid of second switch pipe Q7, the grid of the 3rd switching tube Q5, the grid and the 7th of the 6th switching tube Q8 is closed to open The grid for closing pipe Q9 is connected to MCU control unit 80, and the MCU control unit 80 is used to distinguishing output pwm signal to the One switching tube Q6, second switch pipe Q7, the 3rd switching tube Q5, the 6th switching tube Q8 and the 7th switching tube Q9, to control first to open Close pipe Q6, second switch pipe Q7, the 3rd switching tube Q5, the on off operating mode of the 6th switching tube Q8 and the 7th switching tube Q9.

For the ease of monitoring the electric signal of AC, Fig. 2 is refer to, also include 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.

Further, the AC sampling unit 70 includes two inputs difference of amplifier U9B, the amplifier U9B The input of input rectifying filter unit 10 is connected to by current-limiting resistance, the output end of the amplifier U9B is connected to MCU controls Unit processed 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 is also included and is sequentially connected in series The second sampling resistor R13 and the 3rd sampling resistor R15, the front end of the second sampling resistor R13 be connected to the full-bridge every From the output end of converter unit 30, the rear end of the 3rd sampling resistor R15 is connected to MCU control unit 80, by described Two sampling resistor R13 and the 3rd sampling resistor R15 and make MCU control unit 80 gather the full-bridge isolated variable unit 30 and export Electric signal.

On Converting Unit, as shown in figure 1, the inversion reversed phase unit 40 includes the 4th switching tube Q2, the 5th switch Pipe Q4, the 3rd electrochemical capacitor C3 and the 4th electrochemical capacitor C5, the drain electrode of the 4th switching tube Q2 are connected to full-bridge isolated variable The output head anode of unit 30, the source electrode of the 4th switching tube Q2 is connected to the drain electrode of the 5th switching tube Q4, and the described 5th opens The source electrode for closing pipe Q4 is connected to the negative pole of output end of full-bridge isolated variable unit 30, the grid and the 5th of the 4th switching tube Q2 The grid of switching tube Q4 is respectively used to access the pwm pulse signal of two-way opposite in phase, the positive pole of the 3rd electrochemical capacitor C3 It is connected to the drain electrode of the 4th switching tube Q2, the negative pole connection rear end ground of the 3rd electrochemical capacitor C3, the 3rd electrochemical capacitor The negative pole of C3 is also attached to the positive pole of the 4th electrochemical capacitor C5, and the negative pole of the 4th electrochemical capacitor C5 is connected to the 5th switching tube The source electrode of Q4, the source electrode of the 4th switching tube Q2 and the negative pole of the 3rd electrochemical capacitor C3 as inversion reversed phase unit 40 output End.First resistor R17, the 5th switching tube Q4 are further connected between the grid and source electrode of the 4th switching tube Q2 Grid and source electrode between be connected with second resistance R23.

In above-mentioned inversion reversed phase unit 40, full-bridge isolated variable unit 30 output voltage through the 4th switching tube Q2, load, 4th electrochemical capacitor C5 forms loop powering load and forms first half period amendment ripple level;Second half period corrects string Level forms loop by the 5th switching tube Q4, load, the 3rd electrochemical capacitor C3, and one is so formed in load completely Power frequency amendment alternating current wave pressure.The pwm signal that control chip is exported sends out PWM2H, PWM2L to the respectively after drive circuit Four switching tube Q2, the GATE poles of the 5th switching tube Q4.Phase in inversion phase inverter and frequency inside control chip according to setting Fixed pattern is operated.The 3rd electrochemical capacitor C3, the 4th electrochemical capacitor C5 also have the effect of filtering simultaneously, can be with filtered electrical Sense L3 composition filter circuits.The inverter circuit simple structure, circuit is with low cost only with two metal-oxide-semiconductors.

Intelligent amendment wave voltage change-over circuit based on PFC, full-bridge and half-bridge disclosed by the invention, it has PF high Value, is capable of achieving power network and isolates with output end, and security is very high.Output can be automatically adjusted in input full voltage range Voltage, can fix output frequency, and output voltage is exported with correcting ripple, and automatic shaping function is pressed with to alternating current, additionally, Circuit of the present invention is simple, easy to control, and containing voltage and current sampling 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, full-bridge and half-bridge, 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 full-bridge isolated variable unit (30), includes first switch pipe (Q6), second switch pipe (Q7), the 6th switching tube (Q8), the 7th switching tube (Q9), transformer (T1), the first diode (D5), the second diode (D6) and filter inductance (L3), institute The drain electrode for stating the 6th switching tube (Q8) is connected to the output end of PFC boost unit (20), the source electrode of the 6th switching tube (Q8) The first end of transformer (T1) armature winding is connected to, the drain electrode of the second switch pipe (Q7) is connected to transformer (T1) primary Second end of winding, the source electrode of the second switch pipe (Q7) is connected to front end ground, and the drain electrode of the first switch pipe (Q6) connects The output end of PFC boost unit (20) is connected to, the source electrode of the first switch pipe (Q6) is connected to transformer (T1) armature winding The second end, the drain electrode of the 7th switching tube (Q9) is connected to the first end of transformer (T1) armature winding, and the described 7th opens The source electrode for closing pipe (Q9) is connected to front end ground, the grid of the first switch pipe (Q6), grid, the 6th of second switch pipe (Q7) The grid of the grid of switching tube (Q8) and the 7th switching tube (Q9) is respectively used to access pwm pulse signal, the transformer (T1) The centre tap of secondary windings is connected to rear end ground, and the first end of transformer (T1) secondary windings is connected to the first diode (D5) anode, the negative electrode of first diode (D5) is connected to rear end ground, and the one or two pole by the first electric capacity (C7) The negative electrode for managing (D5) is connected to the front end of filter inductance (L3), and the second end of transformer (T1) secondary windings is connected to second The negative electrode of diode (D6), the anode of second diode (D6) is connected to rear end ground, the filter by the second electric capacity (C8) The rear end of ripple inductance (L3) and the anode of the second diode (D6) as full-bridge isolated variable unit (30) output end;
One inversion reversed phase unit (40), is connected to the output end of full-bridge isolated variable unit (30), the inversion reversed phase unit (40) alternating current is exported after carrying out inversion conversion for the output voltage to full-bridge isolated variable unit (30).
2. the intelligent amendment wave voltage change-over circuit of PFC, full-bridge and half-bridge 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).
3. the intelligent amendment wave voltage change-over circuit of PFC, full-bridge and half-bridge 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.
4. the intelligent amendment wave voltage change-over circuit of PFC, full-bridge and half-bridge is based on as claimed in claim 3, and its feature exists In also including a MCU control unit (80), grid, the grid of second switch pipe (Q7), of the first switch pipe (Q6) The grid of the grid of three switching tubes (Q5), the grid of the 6th switching tube (Q8) and the 7th switching tube (Q9) is connected to MCU controls Unit (80) processed, the MCU control unit (80) is for distinguishing output pwm signal to first switch pipe (Q6), second switch pipe (Q7), the 3rd switching tube (Q5), the 6th switching tube (Q8) and the 7th switching tube (Q9), to control first switch pipe (Q6), second The on off operating mode of switching tube (Q7), the 3rd switching tube (Q5), the 6th switching tube (Q8) and the 7th switching tube (Q9).
5. the intelligent amendment wave voltage change-over circuit of PFC, full-bridge and half-bridge is based on as claimed in claim 4, 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).
6. the intelligent amendment wave voltage change-over circuit of PFC, full-bridge and half-bridge is based on as claimed in claim 5, and its feature exists In the AC sampling unit (70) includes amplifier (U9B), and two inputs of the amplifier (U9B) pass through current limliting respectively Resistance and be connected to the input of input rectifying filter unit (10), it is single that the output end of the amplifier (U9B) is connected to MCU controls First (80).
7. the intelligent amendment wave voltage change-over circuit of PFC, full-bridge and half-bridge is based on as claimed in claim 4, 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.
8. the intelligent amendment wave voltage change-over circuit of PFC, full-bridge and half-bridge is based on as claimed in claim 4, and its feature exists In also including the second sampling resistor (R13) and the 3rd sampling resistor (R15) being sequentially connected in series, second sampling resistor (R13) front end is connected to the output end of the full-bridge isolated variable unit (30), the rear end of the 3rd sampling resistor (R15) MCU control unit (80) is connected to, MCU controls are made by second sampling resistor (R13) and the 3rd sampling resistor (R15) Unit (80) gathers the electric signal of full-bridge isolated variable unit (30) output.
9. the intelligent amendment wave voltage change-over circuit of PFC, full-bridge and half-bridge is based on as claimed in claim 4, and its feature exists In, the inversion reversed phase unit (40) include the 4th switching tube (Q2), the 5th switching tube (Q4), the 3rd electrochemical capacitor (C3) and 4th electrochemical capacitor (C5), the output that the drain electrode of the 4th switching tube (Q2) is connected to full-bridge isolated variable unit (30) is rectified Pole, the source electrode of the 4th switching tube (Q2) is connected to the drain electrode of the 5th switching tube (Q4), the source of the 5th switching tube (Q4) Pole is connected to the negative pole of output end of full-bridge isolated variable unit (30), the grid and the 5th switching tube of the 4th switching tube (Q2) (Q4) grid is respectively used to access the pwm pulse signal of two-way opposite in phase, and the positive pole of the 3rd electrochemical capacitor (C3) connects It is connected to the drain electrode of the 4th switching tube (Q2), the negative pole connection rear end ground of the 3rd electrochemical capacitor (C3), the 3rd electrolysis electricity The negative pole for holding (C3) is also attached to the positive pole of the 4th electrochemical capacitor (C5), and the negative pole of the 4th electrochemical capacitor (C5) is connected to the The source electrode of five switching tubes (Q4), the source electrode of the 4th switching tube (Q2) and the negative pole of the 3rd electrochemical capacitor (C3) fall as inversion The output end of facies unit (40).
10. the intelligent amendment wave voltage change-over circuit of PFC, full-bridge and half-bridge is based on as claimed in claim 9, and its feature exists In, first resistor (R17) is connected between the grid and source electrode of the 4th switching tube (Q2), the 5th switching tube (Q4) Second resistance (R23) is connected between grid and source electrode.
CN201710003791.7A 2017-01-04 2017-01-04 Intelligent amendment wave voltage change-over circuit based on PFC, full-bridge and half-bridge CN106787807A (en)

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PCT/CN2017/080980 WO2018126554A1 (en) 2017-01-04 2017-04-19 Smart correction wave voltage conversion circuit based on pfc, full bridge, and half bridge

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Citations (4)

* Cited by examiner, † Cited by third party
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 Power source apparatus
CN106208638A (en) * 2015-04-30 2016-12-07 神华集团有限责任公司 Device for converting electric energy and corresponding electric energy management connection system
CN206620057U (en) * 2017-01-04 2017-11-07 广东百事泰电子商务股份有限公司 Intelligent amendment wave voltage change-over circuit based on PFC, full-bridge and half-bridge

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102055348A (en) * 2010-12-24 2011-05-11 东南大学 Voltage reducing power electronic transformer for distribution network
CN102969902A (en) * 2012-12-17 2013-03-13 南京航空航天大学 Group control method of multiplexed output module power supply with low crossed adjusting rate
CN103595249B (en) * 2013-10-18 2016-02-10 上海交通大学 Based on the inverse DC voltage booster circuit leading switch
CN205070799U (en) * 2015-09-09 2016-03-02 广东康氏实业有限公司 Laser computerized embroidery machine's laser generator high voltage direct current constant voltage power supply circuit
CN206364711U (en) * 2017-01-04 2017-07-28 广东百事泰电子商务股份有限公司 Intelligent sine voltage change-over circuit based on PFC, full-bridge and half-bridge
CN106787806A (en) * 2017-01-04 2017-05-31 广东百事泰电子商务股份有限公司 Intelligent sine voltage change-over circuit based on PFC, full-bridge and half-bridge

Patent Citations (4)

* Cited by examiner, † Cited by third party
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 Power source apparatus
CN106208638A (en) * 2015-04-30 2016-12-07 神华集团有限责任公司 Device for converting electric energy and corresponding electric energy management connection system
CN206620057U (en) * 2017-01-04 2017-11-07 广东百事泰电子商务股份有限公司 Intelligent amendment wave voltage change-over circuit based on PFC, full-bridge and half-bridge

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