CN106602907A - Intelligent correction wave voltage conversion circuit based on PFC dual full bridge - Google Patents
Intelligent correction wave voltage conversion circuit based on PFC dual full bridge Download PDFInfo
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- CN106602907A CN106602907A CN201611154604.7A CN201611154604A CN106602907A CN 106602907 A CN106602907 A CN 106602907A CN 201611154604 A CN201611154604 A CN 201611154604A CN 106602907 A CN106602907 A CN 106602907A
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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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4258—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage
-
- 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
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses an intelligent correction wave voltage conversion circuit based on a PFC dual full bridge. The circuit comprises an input rectification filtering unit, a PFC boosting unit, and a full-bridge DC-DC isolation transformer unit, a drain electrode of a first switch tube is connected to an output terminal of the PFC boosting unit, a source electrode of the first switch tube is connected to a first terminal of a primary winding of a transformer, a drain electrode of a second switch tube is connected to the source electrode of the first switch tube, a source electrode of the second switch tube is connected to the front-end ground, a drain electrode of an eighth switch tube is connected to the output terminal of the PFC boosting unit, a source electrode of the eighth switch tube is connected to a second terminal of the primary winding of the transformer, a drain electrode of a ninth switch tube is connected to the source electrode of the eighth switch tube, a source electrode of the ninth switch tube is connected to the front-end ground, a secondary winding of the transformer is connected with an input side of a first rectification bridge in parallel, and a positive electrode of an output side of the first rectification bridge is regarded as an output terminal and connected to an inversion phase-inversion unit. According to the circuit, the quality of the output voltage can be improved.
Description
Technical field
The present invention relates to voltage conversion circuit, more particularly to a kind of intelligent amendment wave voltage turn of bridge of being enjoyed a double blessing based on PFC
Change circuit.
Background technology
In prior art, the intelligent boost-buck conversion equipment for turning AC by AC is otherwise known as travelling insert row, in the device, amendment
Wave voltage change-over circuit is its Key Circuit, is a kind of circuit that can realize AC-AC conversion, can be realized in AC-AC conversion
The function of buck burning voltage and frequency.But current AC-AC just meaningful formula equipment Market great majority are non-isolation type
Topological circuit, and PF values are low, output voltage quality is low, security reliability is poor.
The content of the invention
The technical problem to be solved in the present invention is, for the deficiencies in the prior art, there is provided one kind can improve voltage conversion
The PF values of device, output voltage quality can be improved, and safe and reliable be turned based on the enjoy a double blessing intelligent amendment wave voltages of bridge of PFC
Change circuit.
To solve above-mentioned technical problem, the present invention is adopted the following technical scheme that.
A kind of intelligent amendment wave voltage change-over circuit of bridge of being enjoyed a double blessing based on PFC, which includes：The filtering of one input rectifying is single
Unit, its input connect electrical network, for carrying out rectification and filtering to line voltage；One PFC boost unit, is connected to input rectifying
The outfan of filter unit, carries out boost conversion for the output voltage to input rectifying filter unit；One full-bridge DC turn DC every
From power converter cells, include first switch pipe, second switch pipe, transformator, the first rectifier bridge, the 8th switching tube, the 9th open
Pipe and the first electrochemical capacitor are closed, the drain electrode of the first switch pipe is connected to the outfan of PFC boost unit, the first switch
The source electrode of pipe is connected to the first end of primary winding, and the drain electrode of the second switch pipe is connected to the source of first switch pipe
Pole, the source electrode of the second switch pipe connect front end ground, and the drain electrode of the 8th switching tube is connected to the output of PFC boost unit
End, the source electrode of the 8th switching tube are connected to the second end of primary winding, the drain electrode connection of the 9th switching tube
In the source electrode of the 8th switching tube, the source electrode connection front end ground of the 9th switching tube, the grid of the first switch pipe, second open
Grid, the grid of the 8th switching tube and the grid of the 9th switching tube for closing pipe is respectively used to access pwm pulse signal, to control
Nine switching tube of first switch Guan Yu is stated while break-make, and eight switching tubes of second switch Guan Yu break-make simultaneously, the change
The two ends of depressor vice-side winding are in parallel with the two ends of the first rectifier bridge input side, and the negative pole of the first rectifier bridge outlet side connects
Rear end ground is connected to, the positive pole of the first rectifier bridge outlet side is connected to the positive pole of the first electrochemical capacitor, the first electrolysis electricity
The negative pole of appearance is connected to rear end ground, and the positive pole of the first rectifier bridge outlet side turns DC isolated converter units as full-bridge DC
Outfan；One inversion reversed phase unit, is connected to the outfan that full-bridge DC turns DC isolated converter units, the inversion reversed phase unit
Output voltage for turning DC isolated converter units to full-bridge DC carries out output AC electricity after inversion conversion.
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 are connected to the outfan of input rectifying filter unit, the rear end of the boost inductance
The drain electrode of the 3rd switching tube is connected to, the source electrode of the 3rd switching tube connects front end ground, and the grid of the 3rd switching tube is used for
Access pwm control signal all the way, the anode of drain electrode first commutation diode of connection of the 3rd switching tube, first rectification
Outfan of the negative electrode of diode as PFC boost unit, and the negative electrode of first commutation diode connects the second electrochemical capacitor
Positive pole, the negative pole of the second electrochemical capacitor connects front end ground.
Preferably, also include a MCU control unit, the grid of the first switch pipe, the grid of second switch pipe,
The grid of the grid of eight switching tubes, the grid of the 9th switching tube and the 3rd switching tube is connected to MCU control unit, described
MCU control unit be used for respectively output pwm signal to first switch pipe, second switch pipe, the 8th switching tube, the 9th switching tube and
3rd switching tube, to control the logical of first switch pipe, second switch pipe, the 8th switching tube, the 9th switching tube and the 3rd switching tube
Disconnected state.
Preferably, the input rectifying filter unit includes socket, insurance, lightning protection resistance, common mode inhibition inductance, safety
Electric capacity and rectifier bridge, the insurance are serially connected with the zero line or live wire of socket, and the front end of the common mode inhibition inductance is parallel to slotting
Seat, the lightning protection resistance are parallel to the input of the front end of common mode inhibition inductance, the safety electric capacity and rectifier bridge and are parallel to
The rear end of common mode inhibition inductance, the outfan of the rectifier bridge are parallel with filter capacitor.
Preferably, the full-bridge DC turns DC isolated converters unit and also includes the second sampling resistor and being sequentially connected in series
Three sampling resistors, the front end of second sampling resistor are connected to the positive pole of the first rectifier bridge outlet side, the 3rd sampling electricity
The rear end of resistance is connected to MCU control unit, makes MCU control unit adopt by second sampling resistor and the 3rd sampling resistor
Collection full-bridge DC turns the signal of telecommunication of DC isolated converters unit output.
Preferably, an AC sampling unit is also included, the AC sampling unit is connected to input rectifying filter unit
Input and MCU control unit between, the AC sampling unit is used to gather the electricity of input rectifying filter unit AC
Press and feed back to MCU control 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 outfan 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 signal of telecommunication of source electrode.
Preferably, the MCU control unit includes single-chip microcomputer and its peripheral circuit.
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, the grid of the 4th switching tube, the grid of the 5th switching tube, the grid and the 7th of the 6th switching tube
The grid of switching tube is connected to MCU control unit, the 4th switching tube is controlled by the MCU control unit, the 5th is opened
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 the intelligent amendment wave voltage change-over circuit of bridge of being enjoyed a double blessing based on PFC disclosed by the invention, filtered using input rectifying
Ripple unit carries out output ripple DC voltage after rectification and filtering to line voltage, straight to pulsing using PFC boost unit afterwards
Stream voltage carries out boosting process, turns, in DC isolated converter units, to lead when first switch pipe and nine switching tubes in full-bridge DC
It is logical；Electric current forms loop by first switch pipe, primary transformer coil, the 9th switching tube to front end, then by transformator
Magnetic core Rhizoma Nelumbinis are bonded to transformer secondary, and at this moment the two of the first rectifier bridge diode is started working, by AC rectification into unidirectional arteries and veins
Galvanic electricity gives the first electrochemical capacitor, and filters and form direct current.When second switch pipe and the 8th switching tube are turned on, electric current is by second
Switching tube primary coil, the 8th switching tube form loop to front end ground, are then bonded to transformer secondary by magnetic core of transformer Rhizoma Nelumbinis,
At this moment the another two diode of the first rectifier bridge is started working, and AC rectification is supplied electricity to the first electrochemical capacitor into unidirectional pulsation,
And filter and form direct current.The height of output voltage can be adjusted by the turn ratio for changing transformer primary secondary, and then realized
Boosting or blood pressure lowering.Based on said structure, the present invention realizes the isolation transmission of voltage by the way of full-bridge isolation, can be effective
The PF values of step-up/down conversion equipment are improved, while also improving output voltage quality so that voltage conversion process is safer
It is reliable.
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
With reference to the accompanying drawings and examples the present invention is described in more detail.
The invention discloses a kind of intelligent amendment wave voltage change-over circuit of bridge of being enjoyed a double blessing based on PFC, with reference to Fig. 1 to Fig. 3
Shown, which includes：
One input rectifying filter unit 10, its input connect electrical network, for carrying out rectification and filtering to line voltage；
One PFC boost unit 20, is connected to the outfan of input rectifying filter unit 10, for single to input rectifying filtering
The output voltage of unit 10 carries out boost conversion；
One full-bridge DC turns DC isolated converters unit 30, includes first switch pipe Q6, second switch pipe Q7, transformator
T1, the first rectifier bridge (D5, D6, D7, D8), the 8th switching tube Q8, the 9th switching tube Q9 and the first electrochemical capacitor C3, described first
The drain electrode of switching tube Q6 is connected to the outfan of PFC boost unit 20, and the source electrode of the first switch pipe Q6 is connected to transformator
The first end of T1 armature windings, the drain electrode of the second switch pipe Q7 are connected to the source electrode of first switch pipe Q6, and described second opens
The source electrode for closing pipe Q7 connects front end ground, and the drain electrode of the 8th switching tube Q8 is connected to the outfan of PFC boost unit 20, and described the
The source electrode of eight switching tube Q8 is connected to the second end of transformator T1 armature windings, and the drain electrode of the 9th switching tube Q9 is connected to
The source electrode of eight switching tube Q8, the source electrode connection front end ground of the 9th switching tube Q9, the grid of the first switch pipe Q6, second
The grid of the grid of switching tube Q7, the grid of the 8th switching tube Q8 and the 9th switching tube Q9 is respectively used to access pwm pulse signal,
To control the first switch pipe Q6 and the 9th switching tube Q9 break-makes simultaneously, and the second switch pipe Q7 and the 8th switching tube Q8
While break-make, the two ends of the transformator T1 vice-side windings are with the two ends of the first rectifier bridge (D5, D6, D7, D8) input side mutually simultaneously
Connection, the negative pole of the first rectifier bridge (D5, D6, D7, D8) outlet side are connected to rear end ground, first rectifier bridge (D5, D6,
D7, D8) positive pole of outlet side is connected to the positive pole of the first electrochemical capacitor C3, after the negative pole of the first electrochemical capacitor C3 is connected to
End ground, the positive pole of the first rectifier bridge (D5, D6, D7, D8) outlet side turn DC isolated converters unit 30 as full-bridge DC
Outfan；
One inversion reversed phase unit 40, is connected to the outfan that full-bridge DC turns DC isolated converters unit 30, and the inversion is fallen
Facies unit 40 carries out output AC electricity after inversion conversion for the output voltage for turning DC isolated converters unit 30 to full-bridge DC.
In above-mentioned amendment wave voltage change-over circuit, rectification and filter are carried out to line voltage using input rectifying filter unit 10
Output ripple DC voltage after ripple, carries out boosting process to pulsating dc voltage using PFC boost unit 20 afterwards, in full-bridge DC
Turn in DC isolated converters unit 30, turn on as first switch pipe Q6 and the 9th switching tube Q9；Electric current by first switch pipe Q6,
Transformator T1 primary coils, the 9th switching tube Q9 form loop to front end ground, are then bonded to transformation by transformator T1 magnetic core Rhizoma Nelumbinis
Device secondary, at this moment the two of the first rectifier bridge diode (D6, D7) start working, AC rectification is supplied electricity to into the into unidirectional pulsation
One electrochemical capacitor C3, and filter and form direct current.When second switch pipe Q7 and the 8th switching tube Q8 is turned on, electric current is opened by second
Close pipe Q7, transformator T1 primary coils, the 8th switching tube Q8 and loop is formed to front end ground, then closed by transformator T1 magnetic cores Rhizoma Nelumbinis
To transformer secondary, at this moment another two diode (the D5, D8) start-up operation of the first rectifier bridge, by AC rectification into unidirectional arteries and veins
Galvanic electricity gives the first electrochemical capacitor C3, and filters and form direct current.Can be adjusted by the turn ratio for changing transformator T1 original secondary
The height of output voltage, and then realize boosting or blood pressure lowering.Based on said structure, the present invention is realized by the way of full-bridge isolation
The isolation transmission of voltage, can effectively improve the PF values of step-up/down conversion equipment, while output voltage quality is also improved,
So that voltage conversion process is more safe and reliable.
With regard to part of boosting, 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 of input rectifying filter unit 10
End, the rear end of the boost inductance L2 are 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 grid of the 3rd switching tube Q5 are used to accessing pwm control signal all the way, the drain electrode connection of the 3rd switching tube Q5 the
The anode of one commutation diode D1, the outfan of the negative electrode of the first commutation diode D1 as PFC boost unit 20, and should
The negative electrode of the first commutation diode D1 connects the positive pole of the second electrochemical capacitor C2, and the negative pole of the second electrochemical capacitor C2 connects front end ground.
In above-mentioned PFC boost unit 20, when monitor input rectifying filter unit 10 output half-wave alternating voltage be, PFC
Boosting unit 20 enters boost mode, to improve the PF values that AC turns AC intelligence blood pressure lowering conversion topologies circuits, is filtered by C2 after boosting
Voltage after ripple is 400V, and specific boosting principle is as follows：When Q5 is turned on, the boosted inductance L2 of the electric current on C1, Q5 to GND shapes
Into loop, boost inductance L2 storage energy；When Q5 is turned off, the faradism more much higher than input voltage on boost inductance, can be formed
Kinetic potential, induction electromotive force formed Jing after continued flow tube D1 carries out rectification unidirectional pulse voltage give again C2 electric capacity enter filtering, be filtered into
The DC voltage of 400V.And Q5 is the input AC Electrical change adopted according to control chip increasing or reduce during the conducting of Q5
Between, so that electric current is consistent with voltage-phase change improving PF values.
Used as a kind of optimal way, the present embodiment also includes a MCU control unit 80, the grid of the first switch pipe Q6
Pole, the grid of second switch pipe Q7, the grid of the grid, the grid of the 9th switching tube Q9 and the 3rd switching tube Q5 of the 8th switching tube Q8
Pole is connected to MCU control unit 80, the MCU control unit 80 be used for respectively output pwm signal to first switch pipe Q6,
Second switch pipe Q7, the 8th switching tube Q8, the 9th switching tube Q9 and the 3rd switching tube Q5, with control first switch pipe Q6, second
Switching tube Q7, the 8th switching tube Q8, the on off operating mode of the 9th switching tube Q9 and the 3rd switching tube Q5.Further, the MCU controls
Unit processed 80 includes single-chip microcomputer U1 and its peripheral circuit.
As a kind of optimal way, the input rectifying filter unit 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 or live wire of socket, described
The front end of common mode inhibition inductance L1 is parallel to socket, and the lightning protection resistance RV1 is parallel to the front end of common mode inhibition inductance L1, described
The input of safety electric capacity CX1 and rectifier bridge DB1 is parallel to the rear end of common mode inhibition inductance L1, and the rectifier bridge DB1's is defeated
Go out end and be parallel with filter capacitor C1.
In the present embodiment, in order to realize that the unidirectional current for turning the output of DC isolated converters unit 30 to full-bridge DC is sampled,
The full-bridge DC turns DC isolated converters unit 30 and also includes the second sampling resistor R13 and the 3rd sampling resistor being sequentially connected in series
R15, the front end of the second sampling resistor R13 are connected to the positive pole of the first rectifier bridge (D5, D6, D7, D8) outlet side, and described
The rear end of three sampling resistor R15 is connected to MCU control unit 80, by the second sampling resistor R13 and the 3rd sampling resistor
R15 and make MCU control unit 80 collection full-bridge DC turn DC isolated converters unit 30 output the signal of telecommunication.
In order to monitor the output signal of input rectifying filter unit 10, the present embodiment also includes an AC sampling unit
70, the AC sampling unit 70 is connected between the input of input rectifying filter unit 10 and MCU control unit 80, described
AC sampling unit 70 is used to gather the voltage of 10 AC of input rectifying filter unit and feed back to MCU control unit 80.
Further, the AC sampling unit 70 includes amplifier U9B, two input difference of amplifier U9B
The input of input rectifying filter unit 10 is connected to by current-limiting resistance, the outfan of amplifier U9B is connected to MCU controls
Unit processed 80.
For the ease of carrying out Real-time Collection to the electric current in PFC boost unit 20, the source electrode of the 3rd switching tube Q5 with
The first sampling resistor R2A is connected between the ground of front end, the source electrode of the 3rd switching tube Q5 is connected to MCU control unit 80, mat
MCU control unit 80 is made to gather the signal of telecommunication of the 3rd switching tube Q5 source electrodes by the first sampling resistor R2A.
With regard to Converting Unit, the inversion reversed phase unit 40 includes being opened by the 4th switching tube Q1, the 5th switching tube Q2, the 6th
Close the inverter bridge of pipe Q3 and the 7th switching tube Q4 compositions, the grid of the 4th switching tube Q1, the grid of the 5th switching tube Q2, the
The grid of the grid and the 7th switching tube Q4 of six switching tube Q3 is connected to MCU control unit 80, single by MCU controls
Unit 80 and control the 4th switching tube Q1, the 5th switching tube Q2, the 6th switching tube Q3 and the 7th switching tube Q4 on or off, to make
40 output AC voltage of inversion reversed phase unit.
In above-mentioned inversion reversed phase unit 40, the DC voltage Jing Q1, load, Q4 through C3 filter capacitors forms loop to negative
Carry for first half period power frequency level of electric forming；Second half period power frequency level forms loop by Q2, load, Q3, this
Sample is formed a complete power frequency amendment alternating current wave pressure in load.The pwm signal Jing of control chip U1 outputs drives
Send the GATE poles of PWM1H, PWM1L, PWM2H, PWM2L to Q1, Q2, Q3, Q4 after circuit respectively.Phase in inversion phase inverter
Position is operated according to the pattern of control chip inner setting with frequency.
In the intelligent amendment wave voltage change-over circuit of bridge of being enjoyed a double blessing based on PFC disclosed by the invention, compared to existing technology and
Speech, first, the present invention has high PF values, realizes electrical network and isolates with outfan, and safety is very high, meanwhile, in the full electricity of input
Output voltage, and fixed output frequency can be automatically adjusted in the range of pressure, again, output voltage is exported to correct ripple,
Automatic shaping function is pressed with to alternating current, additionally, the present invention program contains voltage and current sampling circuit, can anti-surge voltage with
Electric current.
The above is preferred embodiments of the present invention, is not limited to the present invention, all technology models in the present invention
Enclose interior done modification, equivalent or improvement etc., should be included in the present invention it is protected in the range of.
Claims (10)
1. a kind of intelligent amendment wave voltage change-over circuit of bridge of being enjoyed a double blessing based on PFC, it is characterised in that include：
One input rectifying filter unit, its input connect electrical network, for carrying out rectification and filtering to line voltage；
One PFC boost unit, is connected to the outfan of input rectifying filter unit, for the output to input rectifying filter unit
Voltage carries out boost conversion；
One full-bridge DC turns DC isolated converter units, include first switch pipe, second switch pipe, transformator, the first rectifier bridge,
8th switching tube, the 9th switching tube and the first electrochemical capacitor, the drain electrode of the first switch pipe are connected to the defeated of PFC boost unit
Go out end, the source electrode of the first switch pipe is connected to the first end of primary winding, and the drain electrode of the second switch pipe connects
The source electrode of first switch pipe is connected to, the source electrode of the second switch pipe connects front end ground, and the drain electrode of the 8th switching tube is connected to
The outfan of PFC boost unit, the source electrode of the 8th switching tube are connected to the second end of primary winding, and the described 9th
The drain electrode of switching tube is connected to the source electrode of the 8th switching tube, and the source electrode of the 9th switching tube connects front end ground, and described first opens
The grid for closing grid, the grid of second switch pipe, the grid of the 8th switching tube and the 9th switching tube of pipe is respectively used to access PWM
Pulse signal, to control nine switching tube of first switch Guan Yu while break-make, and the second switch Guan Yu eight is switched
Break-make simultaneously is managed, the two ends of the transformer secondary winding are in parallel with the two ends of the first rectifier bridge input side, and described first is whole
The negative pole of stream bridge outlet side is connected to rear end ground, and the positive pole of the first rectifier bridge outlet side is just being connected to the first electrochemical capacitor
Pole, the negative pole of first electrochemical capacitor are connected to rear end ground, and the positive pole of the first rectifier bridge outlet side turns as full-bridge DC
The outfan of DC isolated converter units；
One inversion reversed phase unit, is connected to the outfan that full-bridge DC turns DC isolated converter units, and the inversion reversed phase unit is used
Output AC electricity after inversion conversion is carried out in the output voltage for turning DC isolated converter units to full-bridge DC.
2. enjoyed a double blessing based on PFC as claimed in claim 1 the intelligent amendment wave voltage change-over circuit of bridge, it is characterised in that institute
State PFC boost unit and include boost inductance, the 3rd switching tube, the first commutation diode and the second electrochemical capacitor, the boosting
The front end of inductance is connected to the outfan of input rectifying filter unit, and the rear end of the boost inductance is connected to the 3rd switching tube
Drain electrode, the source electrode of the 3rd switching tube connect front end ground, and the grid of the 3rd switching tube is used to access PWM controls letter all the way
Number, the anode of drain electrode first commutation diode of connection of the 3rd switching tube, the negative electrode conduct of first commutation diode
The outfan of PFC boost unit, and the negative electrode of first commutation diode connects the positive pole of the second electrochemical capacitor, the second electrolysis electricity
The negative pole of appearance connects front end ground.
3. enjoyed a double blessing based on PFC as claimed in claim 2 the intelligent amendment wave voltage change-over circuit of bridge, it is characterised in that also
Include a MCU control unit, the grid of the first switch pipe, the grid of second switch pipe, the grid of the 8th switching tube,
The grid of the grid of nine switching tubes and the 3rd switching tube is connected to MCU control unit, and the MCU control unit is used to distinguish
Output pwm signal to first switch pipe, second switch pipe, the 8th switching tube, the 9th switching tube and the 3rd switching tube, to control
The on off operating mode of one switching tube, second switch pipe, the 8th switching tube, the 9th switching tube and the 3rd switching tube.
4. enjoyed a double blessing based on PFC as claimed in claim 1 the intelligent amendment wave voltage change-over circuit of bridge, it is characterised in that institute
State input rectifying filter unit and include socket, insurance, lightning protection resistance, common mode inhibition inductance, safety electric capacity and rectifier bridge, it is described
Insurance is serially connected with the zero line or live wire of socket, and the front end of the common mode inhibition inductance is parallel to socket, and the lightning protection resistance is simultaneously
Be coupled to the front end of common mode inhibition inductance, the safety electric capacity and rectifier bridge input be parallel to common mode inhibition inductance after
End, the outfan of the rectifier bridge are parallel with filter capacitor.
5. enjoyed a double blessing based on PFC as claimed in claim 3 the intelligent amendment wave voltage change-over circuit of bridge, it is characterised in that institute
State full-bridge DC and turn DC isolated converters unit and also include the second sampling resistor and the 3rd sampling resistor being sequentially connected in series, described
The front end of two sampling resistors is connected to the positive pole of outlet side, and the rear end of the 3rd sampling resistor is connected to MCU control unit, mat
MCU control unit collection full-bridge DC is made to turn DC isolated converter units by second sampling resistor and the 3rd sampling resistor defeated
The signal of telecommunication for going out.
6. enjoyed a double blessing based on PFC as claimed in claim 3 the intelligent amendment wave voltage change-over circuit of bridge, it is characterised in that also
An AC sampling unit is included, the AC sampling unit is connected to the input of input rectifying filter unit and MCU is controlled
Between unit, the AC sampling unit is used to gather the voltage of input rectifying filter unit AC and feed back to MCU controls
Unit.
7. enjoyed a double blessing based on PFC as claimed in claim 6 the intelligent amendment wave voltage change-over circuit of bridge, it is characterised in that institute
State AC sampling unit and include amplifier, two inputs of the amplifier are connected to input rectifying respectively by current-limiting resistance
The input of filter unit, the outfan of the amplifier are connected to MCU control unit.
8. enjoyed a double blessing based on PFC as claimed in claim 3 the intelligent amendment wave voltage change-over circuit of bridge, it is characterised in that institute
The first sampling resistor is connected between the source electrode and front end ground of stating the 3rd switching tube, the source electrode of the 3rd switching tube is connected to
MCU control unit, makes MCU control unit gather the signal of telecommunication of the 3rd switching tube source electrode by first sampling resistor.
9. enjoyed a double blessing based on PFC as claimed in claim 3 the intelligent amendment wave voltage change-over circuit of bridge, it is characterised in that institute
State MCU control unit and include single-chip microcomputer and its peripheral circuit.
10. enjoyed a double blessing based on PFC as claimed in claim 3 the intelligent amendment wave voltage change-over circuit of bridge, it is characterised in that institute
The inverter bridge that inversion reversed phase unit includes being made up of the 4th switching tube, the 5th switching tube, the 6th switching tube and the 7th switching tube is stated,
The grid of the 4th switching tube, the grid difference of the grid, the grid of the 6th switching tube and the 7th switching tube of the 5th switching tube
Be connected to MCU control unit, control by the MCU control unit the 4th switching tube, the 5th switching tube, the 6th switching tube and
7th switching tube on or off, to make the inversion reversed phase unit output AC voltage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611154604.7A CN106602907A (en) | 2016-12-14 | 2016-12-14 | Intelligent correction wave voltage conversion circuit based on PFC dual full bridge |
| PCT/CN2017/079190 WO2018107622A1 (en) | 2016-12-14 | 2017-04-01 | Pfc double full bridge-based smart correction wave voltage conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611154604.7A CN106602907A (en) | 2016-12-14 | 2016-12-14 | Intelligent correction wave voltage conversion circuit based on PFC dual full bridge |
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| Publication Number | Publication Date |
|---|---|
| CN106602907A true CN106602907A (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611154604.7A Pending CN106602907A (en) | 2016-12-14 | 2016-12-14 | Intelligent correction wave voltage conversion circuit based on PFC dual full bridge |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106602907A (en) |
| WO (1) | WO2018107622A1 (en) |
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| US11033146B2 (en) | 2019-02-25 | 2021-06-15 | Sharkninja Operating Llc | Cooking device and components thereof |
| USD918654S1 (en) | 2019-06-06 | 2021-05-11 | Sharkninja Operating Llc | Grill plate |
| CN114914996B (en) * | 2022-07-13 | 2022-10-25 | 宁波均胜新能源研究院有限公司 | Battery management system and control method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018107622A1 (en) | 2018-06-21 |
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Application publication date: 20170426 |