CN110380625A - Exchange turns DC converter and Switching Power Supply - Google Patents
Exchange turns DC converter and Switching Power Supply Download PDFInfo
- Publication number
- CN110380625A CN110380625A CN201910640278.8A CN201910640278A CN110380625A CN 110380625 A CN110380625 A CN 110380625A CN 201910640278 A CN201910640278 A CN 201910640278A CN 110380625 A CN110380625 A CN 110380625A
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- Prior art keywords
- converter
- bridge
- bridge arm
- circuit
- inductance
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Classifications
-
- 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
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
- H02M3/33507—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 with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—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 with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
- H02M3/3353—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 at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
-
- 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
Abstract
The invention discloses a kind of exchanges to turn DC converter and Switching Power Supply, which includes: controlled rectification bridge circuit, the first inductance, the second inductance, first capacitor；Controlled rectification bridge circuit includes: the first bridge arm and the second bridge arm being connected in parallel, and the first bridge arm includes the first switch device and second switch device being connected in series, and the second bridge arm includes the third switching device and the 4th switching device being connected in series；Two of first bridge arm and the second bridge arm are connected in parallel a little respectively as direct-flow positive pole output end and direct current cathode output end；The midpoint of first bridge arm and the second bridge arm is as ac input end；The first inductance of midpoint of first bridge arm and the first end of first capacitor connect；The second inductance of midpoint of second bridge arm and the first end of first capacitor connect；The second end of first capacitor is connect with the direct current cathode output end of controlled rectification bridge circuit.The present invention can be multiplexed exchange and turn the existing switching device of DC converter to inhibit the current ripple in its direct current output lateral load.
Description
Technical field
The present invention relates to electronic circuit fields more particularly to a kind of exchange to turn DC converter and Switching Power Supply.
Background technique
This part intends to provides background or context for the embodiment of the present invention stated in claims.Description herein
Recognize it is the prior art not because not being included in this section.
Traditional switch power supply is in order to provide stable DC output, it will usually in a DC output side filter capacitor in parallel,
And output power is bigger, needs the capacity of filter capacitor in parallel also bigger, and the electric current of capable AC input side is caused to occur very
Big current harmonics problem, seriously endangers the safety of power grid.In order to reduce the current harmonics of exchange input side, common method is
Increase a circuit of power factor correction being made of switching device and energy-storage travelling wave tube after rectification circuit, obtains constant direct current
Voltage, then plus second level converter obtain load need current or voltage, or in rectification circuit use small DC side
Capacitor, this capacitor are only used for filtering out the current ripples of switching frequency, so that exchange input side has higher power factor,
Fig. 1 is the scheme using small DC bus capacitor, and in order to reduce the pulsation of current of load-side, outside outlet side plus active power filtering is electric
Road, AC/DC converter include: diode bridge rectifier circuit 30, the second capacitor Cr2, bridge inverter main circuit 40, transformer 20,
Controlled rectification bridge circuit 10 and third capacitor Cr3.Wherein, alternating voltage passes through diode bridge rectifier circuit 30, the second capacitor
Cr2 (low capacity capacitor) filtering, then be isolated by bridge inverter main circuit 40 (high-frequency inversion), transformer 20, in transformer 20
It (is opened by first switch device S1, second switch device S2, third switching device S3 and the 4th through controlled rectification bridge circuit 10 on secondary side
Close the rectifier circuit that device S4 is constituted) rectification, third capacitor Cr3 filters to obtain DC voltage.This exchange turns DC converting
The advantages of device is that circuit is simple, and exchange input side has higher power factor；The disadvantage is that when the smaller (example of internal resistance of load
Such as, charge the battery or to LED light power supply etc.) in the case of, the electric current of load has very big low-frequency ripple electric current (twice power grid
Frequency), this can cause side effect (for example, reduce the service life of load or to load fever etc.) to load.
In order to reduce AC/DC converter DC side current ripple, the prior art increases by one in the DC side of AC/DC converter
A active filter circuit being made of the 5th switching device S5, the 6th switching device S6, inductance Lr and capacitor Cr, so that controllable whole
The pulsatile portion that stream bridge circuit 10 exports electric current irec is undertaken by iLr, so that the current ripple of load current significantly drops
It is low.
To simplify explanation, ignore the switching harmonics in electric current, Fig. 2 shows the exchanges of additional active filter circuit to turn direct current
Converter DC side exports electric current irec, the inductive current iLr of active filter circuit, load current iload, wherein T indicates work
The frequency period.As shown in Fig. 2, can effectively inhibit the current ripple in load by the inductive current of control active filter circuit.
From the foregoing, it will be observed that the prior art increases in AC/DC converter DC side to be had by what switching device and energy-storage units were constituted
Power filter inhibits its DC side current ripple, and this mode increases circuit cost and volume.
Summary of the invention
The embodiment of the present invention provides a kind of exchange and turns DC converter, inhibits exchange to turn straight to solve the prior art
The current ripple of current converter DC output side needs to increase by one by switching device and energy-storage units structure in its DC output side
At active filter circuit, lead to that circuit cost is high, bulky technical problem, the converter include: controlled rectification bridge circuit,
First inductance, the second inductance, first capacitor；Wherein, controlled rectification bridge circuit includes: the first bridge arm and the second bridge being connected in parallel
Arm, the first bridge arm include the first switch device and second switch device being connected in series, and the second bridge arm includes the be connected in series
Three switching devices and the 4th switching device；Two of first bridge arm and the second bridge arm are connected in parallel a little respectively as controllable rectifier bridge
The direct-flow positive pole output end and direct current cathode output end of circuit；The midpoint of first bridge arm and the second bridge arm is as controllable rectifier bridge electricity
The ac input end on road；The midpoint of first bridge arm is connect with the first end of the first inductance, the midpoint of the second bridge arm and the second inductance
First end connection；The second end of first inductance, the second end of the second inductance are connect with the first end of first capacitor respectively；First
The second end of capacitor is connect with the direct current cathode output end of controlled rectification bridge circuit.
The embodiment of the present invention also provides a kind of Switching Power Supply, inhibits exchange to turn DC converting to solve the prior art
The current ripple of device DC output side, needing to increase by one in its DC output side is had by what switching device and energy-storage units were constituted
Power filter leads to circuit cost height, bulky technical problem, comprising: above-mentioned exchange turns DC converter.
In the embodiment of the present invention, turn DC converter for using the exchange of controlled rectification circuit, by controlled rectification circuit
Two bridge arms connect be linked into storage capacitor after an inductance respectively, pass through and change switching device gate signal in two bridge arms
Common mode amount size, by pulsation of current power storage in the energy-storage units being made of two inductance and a capacitor, thus real
Effective inhibition of existing DC output side current ripple.
Through the embodiment of the present invention, the switching device that multiplexing exchange turns controlled rectification bridge circuit in DC converter is realized
Come the current ripple being effectively reduced in direct current output lateral load, do not have since exchange provided in an embodiment of the present invention turns DC converter
Have using additional switching device, reduces the circuit cost and volume of converter.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.In the accompanying drawings:
Fig. 1 is that a kind of exchange of the additional active filter circuit provided in the prior art turns DC converter；
Fig. 2 be a kind of additional active filter circuit provided in the prior art exchange turn DC converter output electric current show
It is intended to；
Fig. 3 is that a kind of exchange provided in the embodiment of the present invention turns DC converter；
Fig. 4 is that a kind of exchange provided in the embodiment of the present invention turns DC converter output current diagram；
Fig. 5 is the control letter that a kind of exchange provided in the embodiment of the present invention turns that DC converter realizes current ripple inhibition
Number schematic diagram；
Fig. 6 is that a kind of exchange for providing turns DC converter and realizes that the control signal of power transmission shows in the embodiment of the present invention
It is intended to.
Specific embodiment
Understand in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, with reference to the accompanying drawing to this hair
Bright embodiment is described in further details.Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but simultaneously
It is not as a limitation of the invention.
In the description of this specification, used "comprising", " comprising ", " having ", " containing " etc. are open
Term, that is, mean including but not limited to.Reference term " one embodiment ", " specific embodiment ", " some embodiments ",
" such as " etc. description mean that specific features, structure or feature described in conjunction with this embodiment or example are contained in the application's
In at least one embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical
Embodiment or example.Moreover, specific features, structure or the feature of description in any one or more embodiments or can be shown
It can be combined in any suitable manner in example.
It is straight that a kind of exchange is provided in the embodiment of the present invention and turns DC converter, can apply but is not limited to blow-up circulation
Current converter, each embodiment of the present invention describe in detail so that blow-up circulates DC converter as an example.
Fig. 3 is that a kind of exchange provided in the embodiment of the present invention turns DC converter, as shown in figure 3, the converter includes:
Controlled rectification bridge circuit 10, the first inductance Lr1, the second inductance Lr2, first capacitor Cr1；Wherein, controlled rectification bridge circuit 10 wraps
Include: the first bridge arm and the second bridge arm being connected in parallel, the first bridge arm include that the first switch device S1 being connected in series is opened with second
Device S2 is closed, the second bridge arm includes the third switching device S3 and the 4th switching device S4 being connected in series；First bridge arm and second
Two of bridge arm are connected in parallel a little respectively as the direct-flow positive pole output end of controlled rectification bridge circuit and direct current cathode output end (
One of one bridge arm and the second bridge arm, which is connected in parallel, is used as a direct-flow positive pole output end, another is connected in parallel negative as a direct current
Pole output end)；Ac input end of the midpoint of first bridge arm and the second bridge arm as controlled rectification bridge circuit, for accessing exchange
Voltage；The midpoint of first bridge arm is connect with the first end of the first inductance Lr1, and the of the midpoint of the second bridge arm and the second inductance Lr2
One end connection；The second end of first inductance Lr1, the second end of the second inductance Lr2 connect with the first end of first capacitor Cr1 respectively
It connects；The second end of first capacitor Cr1 is connect with the direct current cathode output end of controlled rectification bridge circuit 10.
As seen from Figure 3, exchange provided in an embodiment of the present invention turns DC converter, can be by DC side ripple current
Inhibition be integrated in the rectifier of output, the power of pulsation is stored in by the first inductance Lr1, the second inductance Lr2 and the first electricity
Hold in Cr1 composition energy-storage units.To simplify the explanation, equally ignore the switching harmonics in electric current, it is provided in an embodiment of the present invention
Exchange turns in DC converter, and DC side exports electric current irec, the first inductive current iLr1, the second inductive current iLr2, load
Electric current iload distribution is as shown in Figure 4, wherein T indicates power frequency period.
From the foregoing, it will be observed that exchange provided in an embodiment of the present invention turns DC converter, by two bridge arms of controlled rectification circuit
It is linked into storage capacitor after one inductance of series connection respectively, it is big by the common mode amount for changing switching device gate signal in two bridge arms
It is small, by pulsation of current power storage in the energy-storage units being made of two inductance and a capacitor, to realize direct current output
Effective inhibition of side current ripple.
Through the embodiment of the present invention, the switching device that multiplexing exchange turns controlled rectification bridge circuit in DC converter is realized
Come the current ripple being effectively reduced in direct current output lateral load, do not have since exchange provided in an embodiment of the present invention turns DC converter
Have using additional switching device, reduces the circuit cost and volume of converter.
In an alternative embodiment, it can also include: to become that exchange provided in an embodiment of the present invention, which turns DC converter,
Depressor 20, wherein the primary side winding of transformer 20 accesses alternating voltage；The vice-side winding access controllable rectifier bridge electricity of transformer 20
The ac input end on road.
Further, based on the above embodiment, exchange provided in an embodiment of the present invention, which turns DC converter, to include:
Diode bridge rectifier circuit 30 and inversion bridge circuit 40；Wherein, the input terminal of diode bridge rectifier circuit 30 with exchange
Power grid connection；The output end of diode bridge rectifier circuit 30 is connect with the input terminal of inversion bridge circuit 40；Inversion bridge-type electricity
The primary side winding of the output end access transformer 20 on road 40.
It should be noted that there are two functions for the switching device of the first bridge arm and the second bridge arm tool, first is that control transformer
The power transmission of primary and secondary side；Second is that the ripple current for DC output side controls.The embodiment of the present invention is by each bridge arm
An inductance is separately connected to a storage capacitor (i.e. first capacitor Cr1), the pulsating power of low frequency can be stored in this
In capacitor.
Optionally, the both ends of above-mentioned diode bridge rectifier circuit also one the second capacitor Cr2 of parallel connection, for filtering.
In an alternative embodiment, it can also include: control that exchange provided in an embodiment of the present invention, which turns DC converter,
Device (being not shown in Fig. 3) processed, with first switch device S1, second switch device S2, third switching device S3 and the 4th derailing switch
The gate terminal of part S4 is separately connected, for controlling phase between first switch device S1 and the gate signal of third switching device S3
The size of difference, to realize the power transmission of transformer 20 primary side winding and vice-side winding.
Turn the twice mains frequency of frequency of DC converter DC side ripple current due to exchanging, thus, as one kind
Optional embodiment, exchange provided in an embodiment of the present invention turn in DC converter, and first switch device S1 and third switch
Duty cycle signals ripple frequency can be twice of mains frequency in the gate signal of device S3.
In order to effectively inhibit controllable rectifier bridge circuit direct output end current ripple, exchange provided in an embodiment of the present invention turns
In DC converter, controller is also used to control first switch device S1, second switch device S2, third switching device S3 and
The common mode that current ripple inhibits is added in the gate signal of four switching device S4 and controls signal.
Fig. 5 is the control letter that a kind of exchange provided in the embodiment of the present invention turns that DC converter realizes current ripple inhibition
Number schematic diagram, as shown in figure 5, the voltage after V_prim indication transformer primary side inversion, the primary current of i indication transformer, Ug1
Indicate that the gate pole of first switch device S1 controls signal, Ug2 indicates that the gate pole of second switch device S2 controls signal, and Ug3 is indicated
The gate pole of third switching device S3 controls signal, and Ug4 indicates that the gate pole of the 4th switching device S4 controls signal, and V_sec indicates to become
The input voltage of depressor pair side rectifier, the primary current of i indication transformer, iLr1 indicate the inductive current of the first inductance,
ILr2 indicates the inductive current of the second inductance.
Fig. 6 is that a kind of exchange for providing turns DC converter and realizes that the control signal of power transmission shows in the embodiment of the present invention
It is intended to, as shown in fig. 6, Duty cycle indicates duty cycle signals；Ug1 and Ug3 respectively indicate it is high frequency modulated after first open
The gate pole for closing device S1 and third switching device S3 controls signal, wherein the twice mains frequency of duty cycle signals ripple frequency,
The gate pole control signal Ug3 of the gate pole control signal Ug1 and third switching device S3 of first switch device S1 has certain phase shift.
For simplicity, the embodiment of the present invention ignores the dead zone of switching device above and below bridge arm, so that Ug1 and Ug2 are mutual
It mends, Ug3 and Ug4 are complementary.First inductance Lr1, the second inductance Lr2 and first capacitor Cr1 form energy-storage units.For the function that will pulse
Rate is stored in first capacitor Cr1, the duty ratio of Ug1 and Ug2 not instead of definite value, according to storage needed for first capacitor Cr1
Pulsating power requires and changes.The variation of the duty ratio of Ug1 and Ug3 is as shown in fig. 6, do periodical change by twice mains frequency
Change.The gate pole of first switch device S1 and third switching device S3, which control signal, has certain phase shift, and it is big to adjust this phase shift
The secondary voltage of small changeable transformer, to control the power transmission of transformer primary side and secondary side.Fig. 5 illustrates the work of circuit
Make principle, primary voltage of transformer V_pri and secondary voltage V_sec have certain phase shift, to realize the control of power.And pass through
The low frequency common signal in Ug1, Ug2, Ug3, Ug4 is controlled to control the control of low-frequency ripple electric current in energy storage inductor, when this
When common-mode signal increases, the pulsating power of storage is increase accordingly, to inhibit the low frequency pulsating electric current in battery.
Based on any one of the above is optional or preferred embodiment, as an alternative embodiment, the present invention is real
It can also include: third capacitor Cr3 that the exchange for applying example offer, which turns DC converter, be parallel to the two of controlled rectification bridge circuit 10
End, for filtering.
A kind of Switching Power Supply is additionally provided in the embodiment of the present invention, inhibits exchange to turn direct current to solve the prior art
The current ripple of converter DC output side, need its DC output side increase by one be made of switching device and energy-storage units
Active filter circuit, lead to that circuit cost is high, bulky technical problem.It is solved the problems, such as due to the Switching Power Supply embodiment
Principle turns that DC converter is similar with exchanging, therefore the implementation of the Switching Power Supply embodiment may refer to exchange and turn DC converter
Implementation, overlaps will not be repeated.
The side that output current ripple inhibits is realized in single-phase AC/DC in conclusion the embodiment of the invention provides a kind of
Method；Turn existing switching device in DC converter by being multiplexed exchange, the control of two bridge arms of controlled rectification bridge circuit is believed
The common mode control of Ripple Suppression is added in number, so that the electric current of pulsation is injected into storage list s member, to inhibit the electricity in load
Stream pulsation.It is can be realized through the embodiment of the present invention as a result, in the case where not increasing extra switch device, effectively inhibits exchange
Turn the current ripple of DC converter outlet side.DC converter is turned for the exchange comprising transformer, is believed since common mode controls
It number does not work for the power transmission of primary and secondary side, thus may be implemented while power transmission and reducing electric current line in load
The double effects of wave.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail it is bright, it should be understood that the above is only a specific embodiment of the present invention, the guarantor being not intended to limit the present invention
Range is protected, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of exchange turns DC converter characterized by comprising controlled rectification bridge circuit, the first inductance, the second inductance,
First capacitor；
Wherein, the controlled rectification bridge circuit includes: the first bridge arm and the second bridge arm being connected in parallel, and first bridge arm includes
The first switch device of series connection and second switch device, second bridge arm include the third switching device that is connected in series with
4th switching device；Two of first bridge arm and second bridge arm are connected in parallel a little respectively as the controllable rectifier bridge
The direct-flow positive pole output end and direct current cathode output end of circuit；Described in the midpoint of first bridge arm and second bridge arm is used as
The ac input end of controlled rectification bridge circuit；
The midpoint of first bridge arm is connect with the first end of first inductance, the midpoint of second bridge arm and described second
The first end of inductance connects；The second end of first inductance, the second end of second inductance respectively with the first capacitor
First end connection；The second end of the first capacitor is connect with the direct current cathode output end of the controlled rectification bridge circuit.
2. converter as described in claim 1, which is characterized in that the converter further include: transformer, wherein the change
The primary side winding of depressor accesses alternating voltage；The exchange that the vice-side winding of the transformer accesses the controlled rectification bridge circuit is defeated
Enter end.
3. converter as claimed in claim 2, which is characterized in that the converter further include: diode bridge rectifier circuit
With inversion bridge circuit；
Wherein, the input terminal of the diode bridge rectifier circuit is connect with AC network；The diode bridge rectifier circuit
Output end connect with the input terminal of the inversion bridge circuit；The output end of the inversion bridge circuit accesses the transformer
Primary side winding.
4. converter as claimed in claim 3, which is characterized in that the converter further include: the second capacitor is parallel to described
The both ends of diode bridge rectifier circuit.
5. converter as claimed in claim 3, which is characterized in that the converter further include: controller is opened with described first
The gate terminal for closing device, the second switch device, the third switching device and the 4th switching device is separately connected, and is used
In the size for controlling phase difference between the first switch device and the gate signal of the third switching device, described in realizing
The power transmission of transformer primary winding and vice-side winding.
6. converter as claimed in claim 5, which is characterized in that the first switch device and the third switching device
Duty cycle signals ripple frequency is twice of mains frequency in gate signal.
7. converter as claimed in claim 5, which is characterized in that the controller is also used to control the first switch device
Part, the second switch device, the third switching device and the 4th switching device gate signal in current wave is added
The common mode that line inhibits controls signal, to realize the inhibition of the controllable rectifier bridge circuit direct output end current ripple.
8. converter as described in claim 1, which is characterized in that the converter further include: third capacitor is parallel to described
The both ends of controlled rectification bridge circuit.
9. converter as claimed in any one of claims 1 to 8, which is characterized in that the converter is blow-up circulation direct current
Converter.
10. a kind of Switching Power Supply characterized by comprising the described in any item exchanges of claim 1 to 9 turn DC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640278.8A CN110380625A (en) | 2019-07-16 | 2019-07-16 | Exchange turns DC converter and Switching Power Supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640278.8A CN110380625A (en) | 2019-07-16 | 2019-07-16 | Exchange turns DC converter and Switching Power Supply |
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| Publication Number | Publication Date |
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| CN110380625A true CN110380625A (en) | 2019-10-25 |
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| CN201910640278.8A Withdrawn CN110380625A (en) | 2019-07-16 | 2019-07-16 | Exchange turns DC converter and Switching Power Supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478600A (en) * | 2020-04-07 | 2020-07-31 | 北京理工大学 | Control method for double-active bridge type single-stage AC-DC converter |
| CN112803801A (en) * | 2019-11-13 | 2021-05-14 | 李尔公司 | Single-stage converter of vehicle-mounted charger (OBC) |
| CN113726136A (en) * | 2020-05-26 | 2021-11-30 | 台达电子企业管理（上海）有限公司 | Conversion device |
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| CN112803801A (en) * | 2019-11-13 | 2021-05-14 | 李尔公司 | Single-stage converter of vehicle-mounted charger (OBC) |
| US11368037B2 (en) * | 2019-11-13 | 2022-06-21 | Lear Corporation | On-board charger (OBC) single-stage converter |
| CN111478600A (en) * | 2020-04-07 | 2020-07-31 | 北京理工大学 | Control method for double-active bridge type single-stage AC-DC converter |
| CN113726136A (en) * | 2020-05-26 | 2021-11-30 | 台达电子企业管理（上海）有限公司 | Conversion device |
| CN113726136B (en) * | 2020-05-26 | 2023-11-03 | 台达电子企业管理（上海）有限公司 | conversion device |
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Application publication date: 20191025 |