CN206759330U - The booster circuit of three-phase single-level full bridge power factor corrector - Google Patents
The booster circuit of three-phase single-level full bridge power factor corrector Download PDFInfo
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- CN206759330U CN206759330U CN201720667661.9U CN201720667661U CN206759330U CN 206759330 U CN206759330 U CN 206759330U CN 201720667661 U CN201720667661 U CN 201720667661U CN 206759330 U CN206759330 U CN 206759330U
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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 booster circuit of three-phase single-level full bridge power factor corrector, belong to Power Electronic Technique, switch power technology field, the utility model is complicated to solve the induction structure of existing three-phase single-level full-bridge APFC converters, the problem of electric fault easily occurs.The utility model includes three-phase input rectification circuit, phase shift bridge, high frequency transformer T, output rectification circuit and output filter capacitor C, and booster circuit input side three-phase bridge arm structure is identical, has two sets of boost inductances, inverse-excitation type inductance L per phase bridge armFCoupled simultaneously with six sets of boost inductances, inverse-excitation type inductance LFSame Name of Ends ground connection, inverse-excitation type inductance LFDifferent name end connection diode DFAnode, diode DFNegative electrode connection output rectification circuit cathode output end.
Description
Technical field
The utility model belongs to Power Electronic Technique, switch power technology field.
Background technology
APFC (APFC) technology is to suppress harmonic current, improve having for electrical equipment net side power factor
Efficacious prescriptions method.According to the difference of circuit structure, APFC technologies can be divided into two-stage type and single-stage type, and single-stage APFC is by PFC links and DC/
DC (DC-DC) transform part integrates, and shares a controller, has the advantages that simple structure, low cost, high efficiency, be
An important topic and development trend in electric and electronic technical field.At present, the research on single-stage APFC technologies collects mostly
In in small-power field, the research on high-power field single-stage APFC converters in being adapted to is relatively fewer.
Single-stage APFC converters based on current mode isolating full-bridge boost topology are adapted to the high-power field work in.Such
The advantage of converter is mainly manifested in：(1) electrical isolation of input and output side is realized；(2) the soft of power switch pipe is realized
Switch；(3) regulation of output voltage is realized；(4) bridge arm Switch Cut-through, the danger of short circuit are eliminated.However, the quasi-converter
Itself exist can not normal starting the problem of, this be due to converter start when output filter capacitor voltage be zero, boost inductance
Very big excessively stream is produced because being charged to filter capacitor.It is more effective at present in order to solve the starting problem of the quasi-converter
Method is the increase flyback winding on converter boost inductance, is filled using flyback winding in starting process for output filter capacitor
Electricity, and realize the normal starting of converter.
As Fig. 1 (a) show the three-phase single-level APFC converters based on current mode isolating full-bridge boost topology.Wherein, La、
Lb、Lc(La=Lb=Lc=L) be input side boost inductance, S1、S2、S3、S4For switching tube (generally power electronic devices
IGBT or Power MOSFET), T is power transformer.In order to realize the normal starting of converter, generally by its boost inductance by
AC is moved to DC side, as shown in Fig. 1 (b), by former boost inductance La、Lb、LcIt is changed into coupling inductance L respectivelya1、La2、Lb1、
Lb2、Lc1、Lc2(La1=La2=Lb1=Lb2=Lc1=Lc2=L), and inverse-excitation type inductance L is added in coupling inductanceaf、
Lbf、Lcf(Laf=Lbf=Lcf=Lf, nfFor its turn ratio, nf 2=L/Lf) and diode Daf、Dbf、Dcf.Comparison diagram 1 (a) and
(b) as can be seen that in order to realize normal starting, the complexity of the transformer configuration significantly adds.
The course of work of three-phase single-level full-bridge APFC converters is divided into two parts, is illustrated in figure 2 converter in Fig. 1 (b)
In the switching sequence of this two-part switching tube of starting state and stable state.Below with 0 in three-phase input power frequency period≤
The converter is introduced exemplified by the stage of ω t≤π/6 to start and the pass of the course of work, in this stage three-phase voltage of stable state
It is to be：ubn≤0≤uan≤ucn。
Part I is the course of work of starting state：Starting state, in a charging-discharging cycle of boost inductance, become
Parallel operation mainly has 2 working stages, as shown in Figure 3.The course of work of each working stage converter is as follows.
Working stage 1：Bridge arm switching tube leads directly to (S1、S2Conducting or S3、S4Conducting), in the effect of three-phase input voltage
Under, boost inductance La1、Lb2、Lc1Electric current linear rise by zero, reach maximum at the end of this stage.In this phase transformation device
Output current only by output filter capacitor discharge provide.
Working stage 2：Bridge arm switching tube is all off, boost inductance La1、Lb2、Lc1The energy transfer stored in the stage 1
To inverse-excitation type inductance Laf、Lbf、LcfOn, and pass through diode Daf、Dbf、DcfDischarged to the outlet side of converter.Tied in this stage
Shu Qian, flyback inductance Laf、Lbf、LcfElectric current drop to zero successively.
Part II is the course of work of stable state：Stable state, in a charging-discharging cycle of boost inductance, become
Parallel operation mainly has 2 working stages, as shown in figure 4, wherein Fig. 4 (a) is identical with Fig. 3 (a).The work of each working stage converter
It is as follows to make process.
Working stage 1：Bridge arm switching tube leads directly to (S1、S2Conducting or S3、S4Conducting), in the effect of three-phase input voltage
Under, boost inductance La1、Lb2、Lc1Electric current linear rise by zero, reach maximum at the end of this stage.In this phase transformation device
Output current only by output filter capacitor discharge provide.
Working stage 2：Bridge arm switching tube turns on (S to arm1、S4Conducting or S2、S3Conducting), three-phase input power supply is with rising
Voltage inductance La1、Lb2、Lc1Energy is provided to the outlet side of converter by transformer T together, before this stage terminates, boosting electricity
Feel La1、Lb2、Lc1Electric current drop to zero successively.
The induction structure of above-mentioned this existing three-phase single-level full-bridge APFC converters is complicated, will be coupled per phase boost inductance
One inverse-excitation type inductance, coiling circuit is random, high to the insulating requirements between each inductance, electric fault easily occurs.
The content of the invention
The purpose of the utility model is to solve the induction structure of existing three-phase single-level full-bridge APFC converters complexity, easily go out
A kind of the problem of existing electric fault, there is provided booster circuit of three-phase single-level full bridge power factor corrector.
The booster circuit of three-phase single-level full bridge power factor corrector described in the utility model, including three-phase input rectified current
Road, phase shift bridge, high frequency transformer T, output rectification circuit and output filter capacitor C, three-phase input rectification circuit is by D1To D6Six
Diode forms the rectification circuit of three phase full bridge structure, and phase shift bridge is by S1To S4Four switching tubes form full bridge switching circuit；
Booster circuit also includes bridge arm boost inductance L in A phasesa1, bridge arm boost inductance L under A phasesa2, bridge arm boosting in B phases
Inductance Lb1, bridge arm boost inductance L under B phasesb2, bridge arm boost inductance L in C phasesc1, bridge arm boost inductance L under C phasesc2, inverse-excitation type electricity
Feel LFWith diode DF,
Diode D has been sequentially connected in series on the A phase bridge arms of three-phase input rectification circuit1, bridge arm boost inductance L in A phasesa1, A phases
Lower bridge arm boost inductance La2With diode D4, diode D1Anode and bridge arm boost inductance L in A phasesa1Different name end be connected, A
Bridge arm boost inductance L in phasea1Same Name of Ends and bridge arm boost inductance L under A phasesa2Different name end be connected, under A phases bridge arm boosting electricity
Feel La2Same Name of Ends and diode D4Negative electrode be connected；
B phases bridge arm, the C phases bridge arm of three-phase input rectification circuit are identical with the structure of the A phases bridge arm；
Inverse-excitation type inductance LFCoupled simultaneously with six sets of boost inductances, inverse-excitation type inductance LFSame Name of Ends ground connection, inverse-excitation type inductance
LFDifferent name end connection diode DFAnode, diode DFNegative electrode connection output rectification circuit cathode output end.
Preferably, inverse-excitation type inductance LFIt is wound on jointly on a magnetic core with six sets of boost inductances, and coiling direction is identical；
The magnetic core has four magnetic poles, respectively two center pillars with air gap, a side column and one with air gap
The side column of individual air-gap-free, the phase boost inductance of coiling one, and two sets of boosting electricity of the phase are distinguished in three magnetic poles with air gap
Sense is independently wound in the magnetic pole of air gap both sides；Inverse-excitation type inductance LFIt is wound on the side column of air-gap-free.
Preferably, inverse-excitation type inductance LFIt is wound on six boost inductances on three E-type magnetic cores with air gap；
The phase boost inductance of coiling one on each E-type magnetic core, E-type magnetic is uniformly wound on after two sets of boost inductance parallel connections of the phase
On the center pillar of core, and coiling direction is identical；
Inverse-excitation type inductance LFSuccessively around the boost inductance on the center pillar of each E-type magnetic core.
The advantages of the utility model：The utility model has simplified circuit structure, using a set of inverse-excitation type inductance and institute
There is boost inductance coupling, significantly reduce the complexity of prior art, in actual applications, using the utility model side
Case not only reduces cost, and reduces technology difficulty, is advantageous to promote on a large scale.
Brief description of the drawings
Fig. 1 is existing three-phase single-level full-bridge APFC converters, wherein (a) is the basic structure of converter；(b) it is to add
The transformer configuration of inverse-excitation type inductance；
Fig. 2 is the switching sequence of converter switches pipe in Fig. 1 (b)；
Fig. 3 be in Fig. 1 (b) converter in the course of work of starting state；
Fig. 4 be in Fig. 1 (b) converter in the course of work of stable state；
Fig. 5 is the booster circuit of three-phase single-level full bridge power factor corrector described in the utility model, wherein (a) is circuit
Schematic diagram；(b) it is boost inductance core structure schematic diagram；
Fig. 6 be in 5 (a) converter in the course of work of starting state；
Fig. 7 be in Fig. 5 (a) converter in the course of work of stable state；
Fig. 8 is the implementation of second liter of inductance core.
Embodiment
The utility model carries out technological improvement for the existing three-phase single-level full-bridge APFC converters as shown in Fig. 1 (b), carries
The converter input side circuit structure and boost inductance integrated technology can be simplified by going out one kind.
It is described further with reference to Fig. 5~Fig. 8, three-phase single-level full-bridge APFC converters such as Fig. 5 of present embodiment
(a) shown in.Compared with Fig. 1 (b) circuits, the inverse-excitation type inductance on boost inductance is by 3 (Laf、Lbf、Lcf) it is reduced to 1 (LF),
Diode is also by 3 (Daf、Dbf、Dcf) it is reduced to 1 (DF), the turn ratio of winding is changed into nF(nF 2=L/LF).With being converted in Fig. 1
Device is compared, and 3 boost inductances of the converter as shown in Fig. 5 (a) are integrated on a magnetic circuit.
The switching sequence of converter switching tube in starting state and stable state is not compared with Fig. 1 (b), in Fig. 5 (a)
Become, still as shown in Figure 2.
(1) course of work of starting state
Starting state, in a charging-discharging cycle of boost inductance, converter mainly has 2 working stages, such as Fig. 6 institutes
Show.The course of work of each working stage converter is as follows.
Working stage 1：Bridge arm switching tube leads directly to (S1、S2Conducting or S3、S4Conducting), in the effect of three-phase input voltage
Under, boost inductance La1、Lb2、Lc1Electric current linear rise by zero, reach maximum at the end of this stage.In this phase transformation device
Output current only by output filter capacitor discharge provide.
Working stage 2：Bridge arm switching tube is all off, boost inductance La1、Lb2、Lc1The energy transfer stored in the stage 1
To inverse-excitation type inductance LFOn, and pass through diode DFDischarged to the outlet side of converter.Before this stage terminates, inverse-excitation type inductance
LFElectric current drop to zero.
(2) course of work of stable state
Stable state, in a charging-discharging cycle of boost inductance, converter mainly has 2 working stages, such as Fig. 7 institutes
Show, wherein Fig. 7 (a) is identical with Fig. 6 (a).The course of work of each working stage converter is as follows.
Working stage 1：Bridge arm switching tube leads directly to (S1、S2Conducting or S3、S4Conducting), in the effect of three-phase input voltage
Under, boost inductance La1、Lb2、Lc1Electric current linear rise by zero, reach maximum at the end of this stage.In this phase transformation device
Output current only by output filter capacitor discharge provide.
Working stage 2：Bridge arm switching tube turns on (S to arm1、S4Conducting or S2、S3Conducting), three-phase input power supply is with rising
Voltage inductance La1、Lb2、Lc1Energy is provided to the outlet side of converter by transformer T together, before this stage terminates, boosting electricity
Feel La1、Lb2、Lc1Electric current drop to zero successively.
The design principle of the inverse-excitation type inductor loop of present embodiment converter：
Here the scheme of comparison diagram 1 (b) illustrates the design principle of scheme in Fig. 5 (a).If three-phase input voltage uan=
Usin ω t, ubn=Usin (ω t-2 π/3), ubn=Usin (ω t+2 π/3).
For converter shown in Fig. 1 (b) and Fig. 5 (a), in the working stage 1 of starting state, the charging of boost inductance
Journey is consistent.At the end of working stage 1, the maximum in a discharge and recharge has been reached per phase boost inductor current, it is as follows：
In formula, D is the dutycycle of APFC converters, and T is the charging-discharging cycle of boost inductance, and therefore, DT switchs for bridge arm
The straight-through time of pipe.
For converter shown in Fig. 1 (b), the inverse-excitation type inductance L in a charging-discharging cycleaf、Lbf、LcfMaximum current
For：
So, converter shown in Fig. 1 (b) can be drawn by formula (2) in starting state and flow through inverse-excitation type inductance Laf、
Lbf、LcfWith diode Daf、Dbf、DcfMaximum current be：
Due to inverse-excitation type inductance Laf、Lbf、LcfElectric current will in starting state working stage 2 back to zero, it is therefore necessary to meet
(wherein,)：
For converter shown in Fig. 5 (a), in starting state, the energy that boost inductance stores in working stage 1 all turns
Move to inverse-excitation type inductance LFOn.Inverse-excitation type inductance L is calculated below by the conservation of energyFOn maximum current.
In working stage 1, the energy of boost inductance storage is：
The energy that boost inductance stores in working stage 1 should be equal to inverse-excitation type inductance L when working stage 2 startsFEnergy,
It can so draw and flow through inverse-excitation type inductance LFWith diode DFMaximum current be：
Due to inverse-excitation type inductance LFElectric current will be in starting state working stage 2 by back to zero, it is therefore necessary to meet (its
In,)：
Contrast (4) and (7) can draw, in order to ensure converter shown in Fig. 5 (a) in starting process with Fig. 1 (b) institutes
If showing that converter is equivalent, it should have：
It can be obtained by formula (4), (6) and (8), converter shown in Fig. 5 (a) flows through inverse-excitation type inductance L in starting stateFWith
Diode DFMaximum current be：
Converter shown in comparison diagram 1 (b), the inverse-excitation type loop of Fig. 5 (a) converters are designed according to formula (8) and (9).
Present embodiment provides two embodiments that boost inductance integrates with inverse-excitation type inductance：
Embodiment 1：Referring to the integrated magnetic circuit figure of three-phase voltage increasing inductance shown in Fig. 5 (b).Wherein, 2 boost inductances per phase
(La1、La2) in the same magnetic pole (carrying air gap) for being wound on magnetic circuit that intercouples, inverse-excitation type inductance is individually wound on one
In magnetic pole (without air gap).Due to carrying air gap in boost inductance magnetic pole, its magnetic resistance is much larger than the magnetic pole of inverse-excitation type inductance, because
This, coupled relation with inverse-excitation type inductance all be present in the boost inductance in the structure per phase, and between every phase boost inductance hardly
Coupled relation be present.
Embodiment 2：Referring to Fig. 8, in practice, the magnetic circuit as shown in Fig. 5 (b) needs special facture magnetic core to realize,
, can be according to structure type as shown in Figure 8 if realizing the integrated of boost inductance using general magnetic circuit.Wherein, will be per phase
Boost inductance (such as La1、La2) winding parallel after, be normally wound on each on independent magnetic core；By inverse-excitation type inductance LFAround
Group bypasses the magnetic core per phase boost inductance successively, ensures that every boost inductance winding caused magnetic flux summation in magnetic core acts on
On inverse-excitation type winding.
Claims (3)
1. the booster circuit of three-phase single-level full bridge power factor corrector, including three-phase input rectification circuit, phase shift bridge, high frequency become
Depressor T, output rectification circuit and output filter capacitor C, three-phase input rectification circuit is by D1To D6It is complete that six diodes form three-phase
The rectification circuit of bridge structure, phase shift bridge is by S1To S4Four switching tubes form full bridge switching circuit；
Characterized in that, booster circuit also includes bridge arm boost inductance L in A phasesa1, bridge arm boost inductance L under A phasesa2, bridge in B phases
Arm boost inductance Lb1, bridge arm boost inductance L under B phasesb2, bridge arm boost inductance L in C phasesc1, bridge arm boost inductance L under C phasesc2, it is anti-
Swash formula inductance LFWith diode DF,
Diode D has been sequentially connected in series on the A phase bridge arms of three-phase input rectification circuit1, bridge arm boost inductance L in A phasesa1, bridge under A phases
Arm boost inductance La2With diode D4, diode D1Anode and bridge arm boost inductance L in A phasesa1Different name end be connected, in A phases
Bridge arm boost inductance La1Same Name of Ends and bridge arm boost inductance L under A phasesa2Different name end be connected, bridge arm boost inductance L under A phasesa2
Same Name of Ends and diode D4Negative electrode be connected；
B phases bridge arm, the C phases bridge arm of three-phase input rectification circuit are identical with the structure of the A phases bridge arm；
Inverse-excitation type inductance LFCoupled simultaneously with six sets of boost inductances, inverse-excitation type inductance LFSame Name of Ends ground connection, inverse-excitation type inductance LF's
Different name end connection diode DFAnode, diode DFNegative electrode connection output rectification circuit cathode output end.
2. the booster circuit of three-phase single-level full bridge power factor corrector according to claim 1, it is characterised in that inverse-excitation type
Inductance LFIt is wound on jointly on a magnetic core with six sets of boost inductances, and coiling direction is identical；
The magnetic core has four magnetic poles, respectively two center pillars with air gap, a side column and a nothing with air gap
The side column of air gap, the phase boost inductance of coiling one, and two sets of boost inductances of the phase point are distinguished in three magnetic poles with air gap
It is not wound on independently in the magnetic pole of air gap both sides；Inverse-excitation type inductance LFIt is wound on the side column of air-gap-free.
3. the booster circuit of three-phase single-level full bridge power factor corrector according to claim 1, it is characterised in that inverse-excitation type
Inductance LFIt is wound on six boost inductances on three E-type magnetic cores with air gap；
The phase boost inductance of coiling one on each E-type magnetic core, E-type magnetic core is uniformly wound on after two sets of boost inductance parallel connections of the phase
On center pillar, and coiling direction is identical；
Inverse-excitation type inductance LFSuccessively around the boost inductance on the center pillar of each E-type magnetic core.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720667661.9U CN206759330U (en) | 2017-06-09 | 2017-06-09 | The booster circuit of three-phase single-level full bridge power factor corrector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720667661.9U CN206759330U (en) | 2017-06-09 | 2017-06-09 | The booster circuit of three-phase single-level full bridge power factor corrector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067186A (en) * | 2018-09-14 | 2018-12-21 | 广州金升阳科技有限公司 | A kind of modified exports zero ripple converter and its control method |
| CN111146937A (en) * | 2020-01-19 | 2020-05-12 | 宋庆国 | Three-switch tube three-phase PFC circuit control method and series topology structure |
| CN112087150A (en) * | 2019-06-12 | 2020-12-15 | 台达电子工业股份有限公司 | Isolated boost converter |
-
2017
- 2017-06-09 CN CN201720667661.9U patent/CN206759330U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067186A (en) * | 2018-09-14 | 2018-12-21 | 广州金升阳科技有限公司 | A kind of modified exports zero ripple converter and its control method |
| CN109067186B (en) * | 2018-09-14 | 2024-02-13 | 广州金升阳科技有限公司 | Improved output zero ripple converter and control method thereof |
| CN112087150A (en) * | 2019-06-12 | 2020-12-15 | 台达电子工业股份有限公司 | Isolated boost converter |
| CN111146937A (en) * | 2020-01-19 | 2020-05-12 | 宋庆国 | Three-switch tube three-phase PFC circuit control method and series topology structure |
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Granted publication date: 20171215 Termination date: 20180609 |