CN107332437A - A kind of single inductance is without bridge APFC circuits - Google Patents
A kind of single inductance is without bridge APFC circuits Download PDFInfo
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- CN107332437A CN107332437A CN201710718217.XA CN201710718217A CN107332437A CN 107332437 A CN107332437 A CN 107332437A CN 201710718217 A CN201710718217 A CN 201710718217A CN 107332437 A CN107332437 A CN 107332437A
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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
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a kind of single inductance without bridge APFC circuits, including ac filter electric capacity C1, the first IGBT module S1, the second IGBT module S2, inductance L, the first power diode D1, the second power diode D2, the 3rd power diode D3, the 4th power diode D4, DC filter capacitor E1, the first divider resistance R1, the second divider resistance R2；Ac filter electric capacity C1 first end, the second power diode D2 negative pole, the first IGBT module S1 emitter stage, connect power firestreak；The emitter stage connection zero-power line of ac filter electric capacity C1 the second end, the 3rd power diode D3 negative pole and the second IGBT module S2；Inductance L first end connects the first IGBT module S1 colelctor electrode and the first power diode D1 positive pole；Inductance L the second end connects the second IGBT module S2 colelctor electrodes and the 4th power diode D4 positive pole.
Description
Technical field
The present invention relates to a kind of single inductance in single-phase power factor correcting field without bridge APFC circuits.
Background technology
Uncontrollable rectifier bridge and electrochemical capacitor are used in single-phase power network as the converters of front stage circuits, no matter
Rear class connects the load of which kind of impedance property, belongs to nonlinear load, harmonic current pollution is produced to power network, it is impossible to meet IEC
Harmonic Current Limits specified in 61000-3-2 and IEC 61000-3-1, and net side power factor is relatively low, is that this must be adopted
Use measure of power factor correction.
However, traditional Bridgeless Power Factor Corrector must use two inductance, current direction has uncertainty, low frequency two
Diode may be simultaneously turned in pole pipe and IGBT module, add destabilizing factor, and the topological cost of double inductance is high, shared body
Product is larger.Accordingly, it would be desirable to look for a kind of single inductance without bridge single phase power factor correcting circuit to solve these problems.
By the retrieval to Bridgeless Power Factor Corrector prior art, such as《Electrical applications》8th phase in 2015 discloses
Document《The analysis and design of single-phase Bridgeless Power Factor Corrector》Propose that a kind of acyclic flow pattern is single-phase and use single without bridge APFC
Periodic Control its
Scheme, but the circuit and tradition without bridge APFC as, be double inductive circuit, cost is higher, take up space compared with
Greatly, it is unsatisfactory for the developing direction of present power factor corrector.
In summary, to being found after the retrieval of Bridgeless Power Factor Corrector prior art, existing circuit is double electricity
Feel structure, it is impossible to meet the demand of present practical application.
The content of the invention
The invention aims to overcome the deficiencies in the prior art there is provided a kind of single inductance without bridge APFC circuits, its phase
Than tradition without bridge APFC circuits, only with an inductance, cost is saved and in plate space so that drive circuit design is more square
Just.
Realizing a kind of technical scheme of above-mentioned purpose is：A kind of single inductance is without bridge APFC circuits, including ac filter electric capacity
C1, the first IGBT module S1, the second IGBT module S2, inductance L, the first power diode D1, the second power diode D2, the 3rd
Power diode D3, the 4th power diode D4, DC filter capacitor E1, the first divider resistance R1, the second divider resistance R2；
Ac filter electric capacity C1 first end, the second power diode D2 negative pole, the first IGBT module S1 transmitting
Pole, connects power firestreak；
The hair of ac filter electric capacity C1 the second end, the 3rd power diode D3 negative pole and the second IGBT module S2
Emitter-base bandgap grading connects zero-power line；
Inductance L first end connects the first IGBT module S1 colelctor electrode and the first power diode D1 positive pole；
Inductance L the second end connects the second IGBT module S2 colelctor electrode and the 4th power diode D4 positive pole；
First power diode D1 negative pole and the 4th power diode D4 negative pole connection DC filter capacitor E1 are just
Pole and the first divider resistance R1 first end；
Second power diode D2 positive pole connects the 3rd power diode D3 positive pole, DC filter capacitor E1 negative pole
And second divider resistance R2 first end, constitute negative output terminal；
First divider resistance R1 the second end connection and the second divider resistance R2 the second end, constitute DC side sampling
End.
Further, ac filter electric capacity C1 first end, the second power diode D2 negative pole, the first IGBT module
S1 emitter stage, connects power firestreak, constitutes input voltage and input current sampling end；
First power diode D1 negative pole and the 4th power diode D4 negative pole connection DC filter capacitor E1 are just
Pole and the first divider resistance R1 first end, constitute positive output end.
Further, single inductance also includes drive circuit without bridge APFC circuits, and the drive circuit includes：
In the input voltage and input current sampling end collection input voltage virtual value UiRMSVirtual value computing module；
The virtual value computing module is connected, to calculate input voltage virtual value square inverse 1/U2 iRMSVirtual value put down
Square reciprocal calculation block；
In DC side sampling end collection output voltage u0, and by output voltage u0With output voltage a reference value urCarry out
Compare, obtain voltage error evThe second multiplier；
To voltage error evCarry out proportional integration regulation and obtain voltage reference value uvcThe quasi- PI adjustment modules of Voltage loop；
According to input voltage virtual value square inverse 1/U2 iRMSWith voltage reference value uvcObtain reference current irFirst multiply
Musical instruments used in a Buddhist or Taoist mass；
In input voltage and input current sampling end to input current iLSampled, and by input current iLWith benchmark electricity
Flow irIt is compared, obtains current error eiThe 3rd multiplier；
To current error eiProportional integration regulation is carried out, supply voltage u is obtainedccThe quasi- PI adjustment modules of electric current loop；
To supply voltage uccProgress is discrete to obtain driving voltage ucdSignal discrete module；
By to driving voltage ucdCopped wave is carried out, obtains driving the arteries and veins of the first IGBT module S1 PWM1 pulse signals
Punching forms module；
The pulse shaping module is connected, it is complementary with the PWM1 pulse signals to be formed, to drive second
The pulse supplement module of IGBT module S2 PWM2 pulse signals.
Further, ac filter electric capacity C1 first end, the second power diode D2 negative pole, the first IGBT module
S1 emitter stage passes through two-way switch BS1 connection power firestreaks；Two-way switch BS1 first end connection power firestreak, is constituted
Input voltage and input current sampling end, two-way switch BS1 the second end connection ac filter electric capacity C1 first end, the
The emitter stage of two power diode D2 negative pole, the first IGBT module S1；
First power diode D1 negative poles and the 4th power diode D4 negative pole are straight by the 3rd IGBT module S3 connections
Flow filter capacitor positive pole and the first divider resistance R1 first end；3rd IGBT module S3 colelctor electrode connects the first power
The negative pole of diode D1 negative poles and the 4th power diode D4, the 3rd IGBT module S3 emitter stage connection DC filter capacitor E1
Positive pole and the first divider resistance R1 first end, constitute positive output end.
Further, single inductance also includes drive circuit without bridge APFC circuits, and the drive circuit includes：
In the input voltage and input current sampling end collection input voltage virtual value UiRMSVirtual value computing module；
The virtual value computing module is connected, to calculate input voltage virtual value square inverse 1/U2 iRMSVirtual value put down
Square reciprocal calculation block；
In DC side sampling end collection output voltage u0, and by output voltage u0With output voltage a reference value urCarry out
Compare, obtain voltage error evThe second multiplier；
To voltage error evCarry out proportional integration regulation and obtain voltage reference value uvcThe quasi- PI adjustment modules of Voltage loop；
According to input voltage virtual value square inverse 1/U2 iRMSWith voltage reference value uvcObtain reference current irFirst multiply
Musical instruments used in a Buddhist or Taoist mass；
In input voltage and input current sampling end to input current iLSampled, and by input current iLWith benchmark electricity
Flow irIt is compared, obtains current error eiThe 3rd multiplier；
To current error eiProportional integration regulation is carried out, supply voltage u is obtainedccThe quasi- PI adjustment modules of electric current loop；
To supply voltage uccProgress is discrete to obtain driving voltage ucdSignal discrete module；
By to driving voltage ucdCopped wave is carried out, obtains driving the first IGBT module S1's and two-way switch BS1
The pulse shaping module of PWM1 pulse signals；
The pulse shaping module is connected, it is complementary with the PWM1 pulse signals to be formed, to drive second
The pulse supplement module of IGBT module S2 PWM2 pulse signals.
Further, the 3rd IGBT module S3 drive signal can enter between PWM1 pulse signals and PWM2 pulse signals
Row switching.
Employ a kind of technical scheme of single inductance without bridge APFC circuits of the present invention, including ac filter electric capacity C1, the
One IGBT module S1, the second IGBT module S2, inductance L, the first power diode D1, the second power diode D2, the 3rd power
Diode D3, the 4th power diode D4, DC filter capacitor E1, the first divider resistance R1, the second divider resistance R2；Exchange filter
Ripple electric capacity C1 first end, the second power diode D2 negative pole, the first IGBT module S1 emitter stage, connection power supply fire
Line；The emitter stage of ac filter electric capacity C1 the second end, the 3rd power diode D3 negative pole and the second IGBT module S2
Connect zero-power line；Inductance L first end connects the first IGBT module S1 colelctor electrode and the first power diode D1
Positive pole；Inductance L the second end connects the second IGBT module S2 colelctor electrode and the 4th power diode D4 positive pole；First
Power diode D1 negative pole and the 4th power diode D4 negative pole connection DC filter capacitor E1 positive pole and first point
Piezoresistance R1 first end；Second power diode D2 positive pole connects the 3rd power diode D3 positive pole, DC filtering
The first end of electric capacity E1 negative pole and the second divider resistance R2, constitutes negative output terminal；First divider resistance R1 the second end
Portion connects the second end with the second divider resistance R2, constitutes DC side sampling end.It has the technical effect that：First, compared to tradition
Without bridge APFC circuits, only with an inductance, cost is saved and in plate space.The second, the first IGBT module S1 and the 2nd IGBT
Module S2 pulses are complementary so that drive circuit design more facilitates.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment 1 of single inductance without bridge APFC circuits of the present invention.
Fig. 2 is a kind of structural representation of embodiment 2 of single inductance without bridge APFC circuits of the present invention.
Fig. 3 is a kind of schematic diagram of drive circuit of single inductance without bridge APFC circuits of the present invention.
Embodiment
Refer to Fig. 1 to Fig. 3, the present inventor in order to be able to preferably understand technical scheme,
It is described in detail below by specifically embodiment, and with reference to accompanying drawing：
Embodiment 1
A kind of single inductance of the present invention is without bridge APFC circuits, including ac filter electric capacity C1, the first IGBT module S1, second
IGBT module S2, inductance L, the first power diode D1, the second power diode D2, the 3rd power diode D3, the 4th power
Diode D4, DC filter capacitor E1, the first divider resistance R1, the second divider resistance R2.
Ac filter electric capacity C1 first end, the second power diode D2 negative pole, the first IGBT module S1 transmitting
Pole, connects power firestreak, constitutes input voltage and input current sampling end, can be sampled input current i in the pointLWith input electricity
Press ui。
The hair of ac filter electric capacity C1 the second end, the 3rd power diode D3 negative pole and the second IGBT module S2
Emitter-base bandgap grading connects zero-power line.
Inductance L first end connects the first IGBT module S1 colelctor electrode and the first power diode D1 positive pole.
Inductance L the second end connects the second IGBT module S2 colelctor electrodes and the 4th power diode D4 positive pole.
First power diode D1 negative pole connects the 4th power diode D2 negative pole, DC filter capacitor E1 positive pole
And first divider resistance R1 first end, constitute positive output end.
Second power diode D2 positive pole connects the 3rd power diode D3 positive pole, DC filter capacitor E1 negative pole
And second divider resistance R2 first end, constitute negative output terminal.
First divider resistance R1 the second end connection and the second divider resistance R2 the second end, constitute DC side sampling
End, the output voltage u of direct current can be gathered in the point0。
A kind of single inductance of the present invention without bridge APFC circuits equipped with drive circuit, including virtual value computing module 1, effectively
It is worth square reciprocal calculation block 2, quasi- PI adjustment modules, signal discrete module 4, pulse shaping module 5 and pulse supplement module 6.
Wherein quasi- PI adjustment modules are divided into the quasi- PI adjustment modules 31 of Voltage loop and the quasi- PI adjustment modules 32 of electric current loop.
Virtual value computing module 1 is in input voltage and input current sampling end sampled input voltage uiAbsolute value and and then
Obtain input voltage virtual value UiRMS, virtual value square reciprocal calculation block 2 calculate obtain input voltage virtual value square inverse
1/U2 iRMS, virtual value square reciprocal calculation block 2 is by voltage effective value square inverse 1/U2 iRMSExport to the first multiplier 71.
Second multiplier 72 is in DC side sampling end sampling and outputting voltage u0, and by output voltage u0With output voltage benchmark
Value urIt is compared, obtains both differences, i.e. voltage error ev, voltage error evThe quasi- PI adjustment modules 31 of input voltage ring, electricity
The quasi- PI adjustment modules 31 of pressure ring are to voltage error evProportional integration regulation is carried out, the quasi- PI adjustment modules 31 of Voltage loop will be missed to voltage
Poor evThe voltage reference value u obtained after proportional integration regulationvcExport to the first multiplier 71.
First multiplier 71 is according to input voltage virtual value square inverse 1/U2 iRMSWith voltage reference value uvc, obtain benchmark
Electric current ir, export to the 3rd multiplier 73, the 3rd multiplier 73 is in input voltage and input current sampling end to input current iLEnter
Row sampling, and with reference current irAfter comparing, current error e is obtainedi, current error eiThe quasi- PI adjustment modules 32 of input current ring,
The quasi- PI adjustment modules 32 of electric current loop are to current error eiProportional integration regulation is carried out, supply voltage u is obtainedcc, supply voltage uccLetter
Number discrete block 4 carries out discrete obtaining driving voltage ucd, driving voltage ucdIt is admitted to pulse shaping module 5, pulse shaping module
5 Triangle ID ripples generated by its inside are to driving voltage ucdCopped wave is carried out, PWM1 pulse signals are formed, to drive first
IGBT module S1, PWM1 pulse signal is exported to pulse supplement module 6, the output of pulse supplement module 6 and PWM1 complementations simultaneously
Pulse, i.e. PWM2 pulse signals, to drive the second IGBT module S2.
A kind of single inductance of the present invention controls the first IGBT moulds without bridge APFC circuits by the complementary pwm pulse signal of two-way
Block S1 and the second IGBT module S2 break-make, utilize the first power diode D1, the second power diode D2, the pole of the 3rd power two
Pipe D3, the 4th power diode D4 realize single boosting of the inductance without bridge APFC.
Compared with prior art, the present invention has following beneficial effect：
First, compared to tradition without bridge APFC circuits, only with an inductance, save cost and in plate space.
The second, the first IGBT module S1 and the second IGBT module S2 pulses are complementary so that drive circuit design more facilitates.
3rd, the first IGBT module S1 and the second IGBT module S2 are driven by complementary pwm pulse, reduce cost
With in plate bulk, and there is clear principle to understand, control signal occur it is simple.
In the present embodiment：
AC-input voltage scope, 220V ± 15%, power frequency 50Hz or 60Hz, rated output direct current average voltage 390V,
Input power is 6kW.
Inductance L parameter is 2.2mH, 40A.
First IGBT module S1, the second IGBT module S2 chopping frequency 40kHz.
DC filter capacitor E1 parameter is 450V, 0.47uF.
First divider resistance R1 parameter is 3M Ω, 5W.
Second divider resistance R1 parameter is：16.8 Ω, 5W.
First power diode D1, the second power diode D2, the 3rd power diode D3, the 4th power diode D4
Parameter is：600V, 40A/100 DEG C；
Inductance L charging processes, the first IGBT module S1 shut-offs, the second IGBT module S2 is open-minded；Inductance L discharge processes, the
One IGBT module S1 is open-minded, the second IGBT module S2 shut-offs；Utilize the first power diode D1, the second power diode D2,
Three power diode D3, the 4th power diode D4 constitute charging and discharging circuit.
Embodiment 2
A kind of single inductance of the present invention is without bridge APFC circuits, including ac filter electric capacity C1, the first IGBT module S1, second
IGBT module S2, the 3rd IGBT module S3, inductance L, the first power diode D1, the second power diode D2, the 3rd power two
Pole pipe D3, the 4th power diode D4, DC filter capacitor E1, the first divider resistance R1, the second divider resistance R2, and it is two-way
Switch BS1.
Two-way switch BS1 first end connection power firestreak constitutes input voltage and input current sampling end, in the point
Can be sampled input current iLWith input voltage ui。
Two-way switch BS1 the second end, ac filter electric capacity C1 first end, the second power diode D2 negative pole
Connect the first IGBT module S1 emitter stage.
The transmitting of ac filter electric capacity C1 the second end, the 3rd power diode D3 negative pole and the second IGBT module S2
Pole connects zero-power line.
Inductance L first end connects the first IGBT module S1 colelctor electrode and the first power diode D1 positive pole.
Inductance L the second end connects the second IGBT module S2 colelctor electrode and the 4th power diode D4 positive pole.
3rd power diode D3 positive pole, the second power diode D2 positive pole, DC filter capacitor E1 negative pole connect
The second divider resistance R2 first end is connect, negative output terminal is constituted.
First power diode D1 negative pole, the 4th power diode D4 negative pole connect the 3rd IGBT module S3 current collections
Pole, the 3rd IGBT module S3 emitter stage connection DC filter capacitor E1 positive pole and the first divider resistance R1 first end,
Constitute positive output end.
First divider resistance R1 the second end is connected with the second divider resistance R2 the second end, constitutes DC side sampling
End.
A kind of single inductance of the present invention without bridge APFC circuits equipped with drive circuit, including virtual value computing module 1, effectively
It is worth square reciprocal calculation block 2, quasi- PI adjustment modules, signal discrete module 4, pulse shaping module 5 and pulse supplement module 6.
Wherein quasi- PI adjustment modules are divided into the quasi- PI adjustment modules 31 of Voltage loop and the quasi- PI adjustment modules 32 of electric current loop.
Virtual value computing module 1 is in input voltage and input current sampling end sampled input voltage uiAbsolute value and and then
Obtain input voltage virtual value UiRMS, virtual value square reciprocal calculation block 2 calculate obtain input voltage virtual value square inverse
1/U2 iRMS, virtual value square reciprocal calculation block 2 is by voltage effective value square inverse 1/U2 iRMSExport to the first multiplier 71.
Second multiplier 72 is in DC side sampling end sampling and outputting voltage u0, and by output voltage u0With output voltage benchmark
Value urIt is compared, obtains both differences, i.e. voltage error ev, voltage error evThe quasi- PI adjustment modules 31 of input voltage ring, electricity
The quasi- PI adjustment modules 31 of pressure ring are to voltage error evProportional integration regulation is carried out, the quasi- PI adjustment modules 31 of Voltage loop will be missed to voltage
Poor evThe voltage reference value u obtained after proportional integration regulationvcExport to the first multiplier 71.
First multiplier 71 is according to input voltage virtual value square inverse 1/U2 iRMSWith voltage reference value uvc, obtain benchmark
Electric current ir, export to the 3rd multiplier 73, the 3rd multiplier 73 is in input voltage and input current sampling end to input current iLEnter
Row sampling, and with reference current irAfter comparing, current error e is obtainedi, current error eiThe quasi- PI adjustment modules 32 of input current ring,
The quasi- PI adjustment modules 32 of electric current loop are to current error eiProportional integration regulation is carried out, supply voltage u is obtainedcc, supply voltage uccIt is defeated
Enter signal discrete module 4 to carry out discrete obtaining driving voltage ucd, driving voltage ucdPulse shaping module 5 is admitted to, by it
The Triangle ID ripple of portion's generation is to driving voltage ucdCopped wave is carried out, PWM1 pulse signals are formed, to drive the first IGBT module S1
With two-way switch BS1, PWM1 pulse signals are exported to pulse supplement module 6, the output of pulse supplement module 6 and PWM1 pulses simultaneously
The complementary pulse of signal, i.e. PWM2 pulse signals, to drive the second IGBT module S2.Two-way switch BS1 passes through pulse shaping
Module 5 is driven, and the drive signal of the 3rd IGBT module 3 can be carried out between PWM1 pulse signals and PWM2 pulse signals
Switching.
Compared with prior art, the present invention has following beneficial effect：
Energy storage is carried out using single inductance L, cost is saved and in plate space.
Realize the boosting and decompression control of output DC voltage.
Driving pulse needed for first IGBT module S1 and the second IGBT module S2 is complementary so that drive circuit design is more square
Just.
A kind of single inductance of the present invention passes through needed for the first IGBT module S1 and the second IGBT module S2 without bridge APFC circuits
Driving pulse is complementary, and control two-way switch BS1 break-makes realize decompression, and use inductance L, reduce cost and volume, and have principle
Clear, control signal occurs simple.
The parameter of each device is in the embodiment：
AC-input voltage scope, 220V ± 15%, power frequency 50Hz or 60Hz, rated output direct current average voltage 390V,
Input power is 6kW.
Inductance L parameter is 2.2mH, 40A.
The 40kHz of first IGBT module S1, the second IGBT module S2 and the 3rd IGBT module 3 chopping frequency.
DC filter capacitor E1 parameter is 450V, 0.47uF.
First divider resistance R1 parameter is 3M Ω, 5W.
Second divider resistance R1 parameter is：16.8 Ω, 5W.
First power diode D1, the second power diode D2, the 3rd power diode D3, the 4th power diode D4
Parameter is：600V, 40A/100 DEG C.
Two-way switch BS1 and the first IGBT module S1 is turned off, when the second IGBT module S2 and the 3rd IGBT module S3 are opened,
Inductance L charges；Two-way switch BS1 and the first IGBT module S1 are open-minded, and the second IGBT module S2 and the 3rd IGBT module S3 are turned off,
Inductance L passes through the 3rd IGBT module S3, and the first power diode D1, the second power diode D2, the 3rd power diode
D3, the 4th power diode D4 constitute loop electric discharge, and power supply does not charge to DC side, completes pressure reduction.
When two-way switch BS1 and the 3rd IGBT module S3 are constantly in conducting state, boosting can be achieved.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will all fall in the range of claims of the present invention.
Claims (6)
1. a kind of single inductance is without bridge APFC circuits, including ac filter electric capacity C1, the first IGBT module S1, the second IGBT module
S2, inductance L, the first power diode D1, the second power diode D2, the 3rd power diode D3, the 4th power diode D4,
DC filter capacitor E1, the first divider resistance R1, the second divider resistance R2；It is characterized in that：
Ac filter electric capacity C1 first end, the second power diode D2 negative pole, the first IGBT module S1 emitter stage, even
Connect power firestreak；
The emitter stage of ac filter electric capacity C1 the second end, the 3rd power diode D3 negative pole and the second IGBT module S2
Connect zero-power line；
Inductance L first end connects the first IGBT module S1 colelctor electrode and the first power diode D1 positive pole；
Inductance L the second end connects the second IGBT module S2 colelctor electrode and the 4th power diode D4 positive pole；
First power diode D1 negative pole and the 4th power diode D4 negative pole connection DC filter capacitor E1 positive pole with
And first divider resistance R1 first end；
Second power diode D2 positive pole connect the 3rd power diode D3 positive pole, DC filter capacitor E1 negative pole and
Second divider resistance R2 first end, constitutes negative output terminal；
First divider resistance R1 the second end connection and the second divider resistance R2 the second end, constitute DC side sampling end.
2. a kind of single inductance according to claim 1 is without bridge APFC circuits, it is characterised in that：The of ac filter electric capacity C1
One end, the second power diode D2 negative pole, the first IGBT module S1 emitter stage, connect power firestreak, constitute input electricity
Pressure and input current sampling end；
First power diode D1 negative pole and the 4th power diode D4 negative pole connection DC filter capacitor E1 positive pole with
And first divider resistance R1 first end, constitute positive output end.
3. a kind of single inductance according to claim 2 is without bridge APFC circuits, it is characterised in that：It also includes drive circuit,
The drive circuit includes：
In the input voltage and input current sampling end collection input voltage virtual value UiRMSVirtual value computing module；
The virtual value computing module is connected, to calculate input voltage virtual value square inverse 1/U2 iRMSVirtual value square fall
Number computing module；
In DC side sampling end collection output voltage u0, and by output voltage u0With output voltage a reference value urIt is compared,
Obtain voltage error evThe second multiplier；
To voltage error evCarry out proportional integration regulation and obtain voltage reference value uvcThe quasi- PI adjustment modules of Voltage loop；
According to input voltage virtual value square inverse 1/U2 iRMSWith voltage reference value uvcObtain reference current irThe first multiplier；
In input voltage and input current sampling end to input current iLSampled, and by input current iLWith reference current ir
It is compared, obtains current error eiThe 3rd multiplier；
To current error eiProportional integration regulation is carried out, supply voltage u is obtainedccThe quasi- PI adjustment modules of electric current loop；
To supply voltage uccProgress is discrete to obtain driving voltage ucdSignal discrete module；
By to driving voltage ucdCopped wave is carried out, obtains driving the pulse form of the first IGBT module S1 PWM1 pulse signals
Into module；
The pulse shaping module is connected, it is complementary with the PWM1 pulse signals to be formed, to drive the 2nd IGBT moulds
The pulse supplement module of block S2 PWM2 pulse signals.
4. a kind of single inductance according to claim 2 is without bridge APFC circuits, it is characterised in that：The of ac filter electric capacity C1
One end, the second power diode D2 negative pole, the first IGBT module S1 emitter stage pass through two-way switch BS1 connections power supply fire
Line；Two-way switch BS1 first end connection power firestreak, constitutes input voltage and input current sampling end, two-way switch BS1
The second end connection ac filter electric capacity C1 first end, the second power diode D2 negative pole, the first IGBT module S1
Emitter stage；
First power diode D1 negative poles and the 4th power diode D4 negative pole are filtered by the 3rd IGBT module S3 connections direct current
The first end of ripple capacitance cathode and the first divider resistance R1；3rd IGBT module S3 colelctor electrode connection the first power two pole
The negative pole of pipe D1 negative poles and the 4th power diode D4, the 3rd IGBT module S3 emitter stage connection DC filter capacitor E1 is just
Pole and the first divider resistance R1 first end, constitute positive output end.
5. a kind of single inductance according to claim 4 is without bridge APFC circuits, it is characterised in that：It also includes drive circuit,
The drive circuit includes：
In the input voltage and input current sampling end collection input voltage virtual value UiRMSVirtual value computing module；
The virtual value computing module is connected, to calculate input voltage virtual value square inverse 1/U2 iRMSVirtual value square fall
Number computing module；
In DC side sampling end collection output voltage u0, and by output voltage u0With output voltage a reference value urIt is compared,
Obtain voltage error evThe second multiplier；
To voltage error evCarry out proportional integration regulation and obtain voltage reference value uvcThe quasi- PI adjustment modules of Voltage loop；
According to input voltage virtual value square inverse 1/U2 iRMSWith voltage reference value uvcObtain reference current irThe first multiplier；
In input voltage and input current sampling end to input current iLSampled, and by input current iLWith reference current ir
It is compared, obtains current error eiThe 3rd multiplier；
To current error eiProportional integration regulation is carried out, supply voltage u is obtainedccThe quasi- PI adjustment modules of electric current loop；
To supply voltage uccProgress is discrete to obtain driving voltage ucdSignal discrete module；
By to driving voltage ucdCopped wave is carried out, obtains driving the first IGBT module S1 and two-way switch BS1 PWM1 arteries and veins
Rush the pulse shaping module of signal；
The pulse shaping module is connected, it is complementary with the PWM1 pulse signals to be formed, to drive the 2nd IGBT moulds
The pulse supplement module of block S2 PWM2 pulse signals.
6. a kind of single inductance according to claim 5 is without bridge APFC circuits, it is characterised in that：3rd IGBT module S3 drive
Dynamic signal can be switched between PWM1 pulse signals and PWM2 pulse signals.
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