CN106972752A - Can wide scope regulation output DC DC converters - Google Patents
Can wide scope regulation output DC DC converters Download PDFInfo
- Publication number
- CN106972752A CN106972752A CN201710317601.9A CN201710317601A CN106972752A CN 106972752 A CN106972752 A CN 106972752A CN 201710317601 A CN201710317601 A CN 201710317601A CN 106972752 A CN106972752 A CN 106972752A
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- CN
- China
- Prior art keywords
- full bridge
- connect
- conversion circuit
- bridge rectifier
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- 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
Abstract
The invention discloses it is a kind of can wide scope regulation output DC DC converters, including the first DC DC translation circuits based on LLC circuits and the 2nd DC DC translation circuits based on phase whole-bridging circuit.Because LLC circuits can realize primary side switch pipe no-voltage and secondary side diode zero current turning-on, so the first DC DC translation circuits can realize that isolation features can obtain very high efficiency again, voltage can suitably change between busbar voltage Vbus+ to Mid, so as to ensure that isolating transformer T1 and resonant inductance L1 design is in efficiency optimization state.2nd DC DC translation circuits can realize Duty ratio control, and primary side Sofe Switch can be realized in very wide output area.The DC DC converters that the present invention is provided combine two respective advantages of DC DC translation circuits, so as to realize that wide scope adjusts output voltage in a DC DC converter.
Description
Technical field
The present invention relates to circuit design technique, more particularly to it is a kind of can wide scope regulation output DC-DC converter.
Background technology
DC-DC converter is the device that a kind of input direct voltage is converted into another output DC voltage.In current allusion quotation
In the charging pile application of type, alternating voltage is converted to by first order circuit by DC bus-bar voltage first, then in the second level
DC bus-bar voltage is converted to by DC-DC circuit by the adjustable DC voltage of output in circuit, direct current here turns straight
The Flow Line DC-DC converter that namely we mention.
In Rechargeable vehicle field, the output voltage of charging module will meet the requirement of on-vehicle battery exemplary voltages, according to
《GBT18487.1-2015《Electric car conduction charging system part 1：General Requirement》, 4.4. electric automobile power supply units are defeated
Go out voltage and be divided into third gear at present：200-500V, 350-700V and 500-950V.Power supply unit higher than 950V is by vehicular manufacturer
Manufacturer resolves through consultation with power supply unit.
To meet above-mentioned voltage request, many charging pile producers employ uses different converters according to different output voltages
Mode meet requirement of the vehicle to different voltages.This strategy for being directed to different output voltages using different converters, it is right
Extra purchase cost, management cost and operation cost are required for for Che Qi, charging pile operator and charging pile manufacturer,
Also goods and materials waste is easily caused, is unfavorable for the demands such as energy-conserving and environment-protective.
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of can wide scope regulation output DC-DC converter, with solve
Certainly existing DC-DC converter can not realize the problem of wide scope adjusts output voltage.The present invention is real by following technical solution
Existing：
It is a kind of can wide scope regulation output DC-DC converter, including the first DC-DC conversion circuit based on LLC circuits
With the second DC-DC conversion circuit based on phase whole-bridging circuit；
First DC-DC conversion circuit includes the first full bridge inverter, electric capacity C1, inductance L1, the first transformer, the
One full bridge rectifier and electric capacity C2, two DC terminals of first full bridge inverter are respectively used to connect the first direct current
The positive and negative electrode in source, an exchange end of first full bridge inverter passes sequentially through electric capacity C1 and inductance L1 and described first
Primary one end connection of transformer, another exchange end of first full bridge inverter and first transformer just
The other end connection of level, the secondary two ends of first transformer connect two friendships of first full bridge rectifier respectively
End is flowed, two DC terminals of first full bridge rectifier connect electric capacity C2 two ends respectively；
Second DC-DC conversion circuit includes the second full bridge inverter, the second transformer, the second full bridge rectifier
With electric capacity C3, two DC terminals of second full bridge inverter are respectively used to connect the positive and negative electrode of the second dc source, institute
Two exchange ends for stating the second full bridge inverter connect the primary two ends of second transformer, second transformation respectively
The secondary two ends of device connect two exchange ends of second full bridge rectifier respectively, second full bridge rectifier
Two DC terminals connect electric capacity C3 two ends respectively；
The DC terminal and described for being used to connect the negative pole of first dc source of first full bridge inverter
The DC terminal connection for being used to connect the positive pole of second dc source of two full bridge inverters, the first full-bridge rectification electricity
The positive direct-current end on road be connected with the negative DC terminal of second full bridge rectifier or first full bridge rectifier it is negative
DC terminal is connected with the positive direct-current end of second full bridge rectifier.
Further, the DC-DC converter also includes control circuit, and the control circuit becomes with the first DC-DC
Circuit and the connection of the second DC-DC conversion circuit are changed, for controlling first DC-DC conversion circuit and the 2nd DC- respectively
The startup or closing of DC translation circuits.
The present invention compared with prior art, has the following advantages that and beneficial effect：
The DC-DC converter that the present invention is provided includes the first DC-DC conversion circuit based on LLC circuits and complete based on phase shift
Second DC-DC conversion circuit of bridge circuit.Because LLC circuits can realize primary side switch pipe no-voltage and the electricity of secondary side diode zero
Stream is open-minded, so the first DC-DC conversion circuit can realize that isolation features can obtain very high efficiency, busbar voltage Vbus again
+ can suitably be changed to voltage between Mid, so as to ensure that isolating transformer T1 and resonant inductance L1 design is in efficiency optimization
State.Second DC-DC conversion circuit can realize Duty ratio control, and primary side Sofe Switch can be realized in very wide output area.
The DC-DC converter that the present invention is provided combines two respective advantages of DC-DC conversion circuit, becomes so as to realize in a DC-DC
Wide scope adjusts output voltage in parallel operation.
Brief description of the drawings
Fig. 1 is the electrical block diagram of DC-DC converter provided in an embodiment of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail.
As shown in figure 1, it is provided in an embodiment of the present invention can wide scope regulation output DC-DC converter, including based on LLC
First DC-DC conversion circuit of circuit and the second DC-DC conversion circuit based on phase whole-bridging circuit；
First DC-DC conversion circuit includes the first full bridge inverter, electric capacity C1, inductance L1, the first transformer, first complete
Bridge rectification circuit and electric capacity C2, two DC terminals of the first full bridge inverter be respectively used to connect the first dc source just,
Negative pole, an exchange end of the first full bridge inverter passes sequentially through primary one of electric capacity C1 and inductance L1 and the first transformer
End connection, another exchange end of the first full bridge inverter is connected with the primary other end of the first transformer, the first transformation
The secondary two ends of device connect two exchange ends of the first full bridge rectifier, two direct currents of the first full bridge rectifier respectively
End connects electric capacity C2 two ends respectively；
Second DC-DC conversion circuit includes the second full bridge inverter, the second transformer, the second full bridge rectifier and electricity
Hold C3, two DC terminals of the second full bridge inverter are respectively used to connect the positive and negative electrode of the second dc source, and the second full-bridge is inverse
Two exchange ends for becoming circuit connect the primary two ends of the second transformer respectively, and the secondary two ends of the second transformer connect respectively
Two exchange ends of the second full bridge rectifier are connect, two DC terminals of the second full bridge rectifier connect the two of electric capacity C3 respectively
End；
The DC terminal for being used to connect the negative pole of the first dc source and the second full-bridge inverting electricity of first full bridge inverter
The DC terminal connection for being used to connect the positive pole of the second dc source on road, the positive direct-current end of the first full bridge rectifier and second complete
The negative DC terminal connection of bridge rectification circuit or the negative DC terminal and the second full bridge rectifier of the first full bridge rectifier are just
DC terminal is connected.
Specifically：First full bridge inverter includes switch triode Q1, switch triode Q2, switch triode Q3, opened
Close triode Q4 and sustained diode 1, sustained diode 2, sustained diode 3, sustained diode 4；First full-bridge rectification
Circuit includes commutation diode D9, commutation diode D10, commutation diode D11, commutation diode D12；Second full-bridge inverting electricity
Road includes switch triode Q5, switch triode Q6, switch triode Q7, switch triode Q8 and sustained diode 5, afterflow
Diode D6, sustained diode 7, sustained diode 8；Second full bridge rectifier includes commutation diode D13, the pole of rectification two
Pipe D14, commutation diode D15, commutation diode D16.Particular circuit configurations can refer to Fig. 1, repeat no more.
DC-DC converter may also include control circuit, and control circuit and the first DC-DC conversion circuit and the 2nd DC-DC become
Change circuit to connect, startup or closing for controlling the first DC-DC conversion circuit and the second DC-DC conversion circuit respectively, for example,
One in the first DC-DC conversion circuit and the second DC-DC conversion circuit is only set to start, another closing, or make the first DC-
DC translation circuits and the second DC-DC conversion circuit all start.Controlling the specific control mode of circuit can be：Work as DC-DC converter
Output voltage between Vdc1 and Vdc2 when, only start the second DC-DC conversion circuit, when the output voltage of DC-DC converter
More than Vdc2, and when between Vdc2 and Vdc3, while starting the first DC-DC conversion circuit and the second DC-DC conversion circuit, make
First DC-DC conversion circuit, which is operated in, determined near the frequency stage.
Above-described embodiment is only preferred embodiment, the protection domain being not intended to limit the invention, every the present invention's
Any modifications, equivalent substitutions and improvements made within spirit and principle etc., should be included in the scope of the protection.
Claims (2)
1. it is a kind of can wide scope regulation output DC-DC converter, it is characterised in that including the first DC-DC based on LLC circuits
Translation circuit and the second DC-DC conversion circuit based on phase whole-bridging circuit；
First DC-DC conversion circuit includes the first full bridge inverter, electric capacity C1, inductance L1, the first transformer, first complete
Bridge rectification circuit and electric capacity C2, two DC terminals of first full bridge inverter are respectively used to connect the first dc source
Positive and negative electrode, an exchange end of first full bridge inverter passes sequentially through electric capacity C1 and inductance L1 and first transformation
Primary one end connection of device, another exchange end of first full bridge inverter is primary with first transformer
The other end is connected, and the secondary two ends of first transformer connect two exchanges of first full bridge rectifier respectively
End, two DC terminals of first full bridge rectifier connect electric capacity C2 two ends respectively；
Second DC-DC conversion circuit includes the second full bridge inverter, the second transformer, the second full bridge rectifier and electricity
Hold C3, two DC terminals of second full bridge inverter are respectively used to connect the positive and negative electrode of the second dc source, described the
Two exchange ends of two full bridge inverters connect the primary two ends of second transformer respectively, second transformer
Secondary two ends connect two exchange ends of second full bridge rectifier, two of second full bridge rectifier respectively
DC terminal connects electric capacity C3 two ends respectively；
The DC terminal for being used to connect the negative pole of first dc source of first full bridge inverter and described second complete
The DC terminal connection for being used to connect the positive pole of second dc source of bridge inverter circuit, first full bridge rectifier
Positive direct-current end be connected with the negative DC terminal of second full bridge rectifier or first full bridge rectifier negative direct current
End is connected with the positive direct-current end of second full bridge rectifier.
2. as claimed in claim 1 can wide scope regulation output DC-DC converter, it is characterised in that also including control electricity
Road, the control circuit is connected with first DC-DC conversion circuit and the second DC-DC conversion circuit, for controlling institute respectively
State the startup or closing of the first DC-DC conversion circuit and second DC-DC conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317601.9A CN106972752A (en) | 2017-05-08 | 2017-05-08 | Can wide scope regulation output DC DC converters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317601.9A CN106972752A (en) | 2017-05-08 | 2017-05-08 | Can wide scope regulation output DC DC converters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106972752A true CN106972752A (en) | 2017-07-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710317601.9A Pending CN106972752A (en) | 2017-05-08 | 2017-05-08 | Can wide scope regulation output DC DC converters |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900090A (en) * | 2018-07-04 | 2018-11-27 | 上海科技大学 | A kind of resonance isolated converter of ultra-wide range of regulation |
| CN111800015A (en) * | 2020-07-13 | 2020-10-20 | 中南大学 | Direct-current transformer for new energy direct-current grid connection and control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075784A (en) * | 2007-06-21 | 2007-11-21 | 艾默生网络能源有限公司 | Zero-voltage DC/DC switch circuit with phase-shift control |
| CN203466730U (en) * | 2013-09-24 | 2014-03-05 | 深圳麦格米特电气股份有限公司 | LLC resonant converter |
| US20140078783A1 (en) * | 2012-09-19 | 2014-03-20 | Industrial Technology Research Institute | Full-bridge quasi resonant dc-dc converter and driving method thereof |
| CN103856063A (en) * | 2014-03-27 | 2014-06-11 | 扬州大学 | Series-parallel type double-active bridge circuit |
| CN104716844A (en) * | 2015-03-18 | 2015-06-17 | 江苏绿城信息技术有限公司 | Input-parallel output-parallel modularized direct current converter with soft switch |
| CN204886704U (en) * | 2015-08-27 | 2015-12-16 | 苏州汇川技术有限公司 | High -power switching power supply circuit and have high -voltage inverter of this circuit |
| CN105356755A (en) * | 2015-11-05 | 2016-02-24 | 刘文明 | Variable turn ratio output DC-DC converter |
-
2017
- 2017-05-08 CN CN201710317601.9A patent/CN106972752A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075784A (en) * | 2007-06-21 | 2007-11-21 | 艾默生网络能源有限公司 | Zero-voltage DC/DC switch circuit with phase-shift control |
| US20140078783A1 (en) * | 2012-09-19 | 2014-03-20 | Industrial Technology Research Institute | Full-bridge quasi resonant dc-dc converter and driving method thereof |
| CN203466730U (en) * | 2013-09-24 | 2014-03-05 | 深圳麦格米特电气股份有限公司 | LLC resonant converter |
| CN103856063A (en) * | 2014-03-27 | 2014-06-11 | 扬州大学 | Series-parallel type double-active bridge circuit |
| CN104716844A (en) * | 2015-03-18 | 2015-06-17 | 江苏绿城信息技术有限公司 | Input-parallel output-parallel modularized direct current converter with soft switch |
| CN204886704U (en) * | 2015-08-27 | 2015-12-16 | 苏州汇川技术有限公司 | High -power switching power supply circuit and have high -voltage inverter of this circuit |
| CN105356755A (en) * | 2015-11-05 | 2016-02-24 | 刘文明 | Variable turn ratio output DC-DC converter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900090A (en) * | 2018-07-04 | 2018-11-27 | 上海科技大学 | A kind of resonance isolated converter of ultra-wide range of regulation |
| CN108900090B (en) * | 2018-07-04 | 2020-09-29 | 上海科技大学 | Resonant isolation converter with ultra-wide voltage regulation range |
| CN111800015A (en) * | 2020-07-13 | 2020-10-20 | 中南大学 | Direct-current transformer for new energy direct-current grid connection and control method thereof |
| CN111800015B (en) * | 2020-07-13 | 2024-04-05 | 中南大学 | DC transformer for new energy DC grid connection and control method thereof |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170721 |
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| RJ01 | Rejection of invention patent application after publication |