CN104935174B - A kind of full-bridge DC/DC converter containing tunable inductance network - Google Patents
A kind of full-bridge DC/DC converter containing tunable inductance network Download PDFInfo
- Publication number
- CN104935174B CN104935174B CN201510316150.8A CN201510316150A CN104935174B CN 104935174 B CN104935174 B CN 104935174B CN 201510316150 A CN201510316150 A CN 201510316150A CN 104935174 B CN104935174 B CN 104935174B
- Authority
- CN
- China
- Prior art keywords
- diode
- auxiliary
- high frequency
- converter
- switch
- 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.)
- Active
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The full-bridge DC-DC converter containing tunable inductance network that the invention proposes a kind of includes the primary side module being made of single-phase full bridge inverter circuit and tunable inductance network, high frequency transformer and the secondary side mode block comprising rectification circuit.Primary side tunable inductance network can adjust inductance value according to input power, and converter is made to be constantly in Sofe Switch working condition.Pass through primary side full bridge inverter simultaneously for DC conversion into alternating current, and by coupled modes by alternating current transmission to secondary side mode block, then the AC conversion that secondary side mode block is used to receive is applied in load again at direct current.The utilization of tunable inductance network is able to maintain the simple advantage of former convertor controls without changing the basic operation mode of full-bridge DC-DC converter in the present invention.
Description
Technical field
The present invention relates to a kind of DC-DC converter, specifically a kind of full-bridge DC-DC containing tunable inductance network
Converter.
Background technique
On the one hand the electrical isolation of input and output may be implemented by its high frequency transformer for full-bridge DC-DC converter, another
Sofe Switch working condition may be implemented in the case where meeting some requirements for all switching tubes of aspect, therefore have capable transport efficiency
The advantages that height, power density are high, safety is good.It is applied in more industrial occasions, such as electric automobile battery charger, boat
Empty space industry.But full-bridge DC/DC converter transimission power is limited to the size of the equivalent leakage inductance of transformer, larger in transimission power
When need the equivalent leakage inductance value of transformer in circuit smaller, but lesser leakage inductance value can to convert in converter light running
Power switch tube in device is difficult to realize Sofe Switch working condition, and then leads to converter transmission efficiency is low, and fever is serious, operation
The problems such as unstable.Existing solution has focused largely on the operation for increasing the Sofe Switch that auxiliary resonance circuit increases power switch
The problems such as section, such scheme there are passive device volumes big, at high cost and control strategy is complicated.
Summary of the invention
In view of the above shortcomings of the prior art, the present invention provides a kind of full-bridge DC-DC containing tunable inductance network
On the one hand converter solves the problems, such as that existing full-bridge DC-DC converter Sofe Switch section is little, on the other hand former without changing
Convertor controls strategy can not only increase converter soft switch operation interval, while convertor controls mode is also simply easy to
It realizes.
The technical scheme adopted by the invention is as follows:
A kind of full-bridge DC-DC converter containing tunable inductance network, comprising one by single-phase full bridge inverter circuit and can
Adjust primary side module, high frequency transformer T and the secondary side mode block comprising rectification circuit of inductance network composition.Its primary side module includes
Four power switch S1、S2、S3、S4, four diode D1、D2、D3、D4, four capacitor C1、C2、C3、C4, a controllable impedance net
Network, the equivalent leakage inductance L of a high frequency transformerk.The tunable inductance network is by n auxiliary switch Sa1、Sa2…SanIt is assisted with n
Inductance La1、La2…LanIt constitutes.Primary side module physical circuit type of attachment is as follows:
Anode, the power switch S of input power1、S3Drain electrode, diode D1、D3Cathode and capacitor C1、C3Upper end phase
Even；Cathode, the power switch S of input power2、S4Source electrode, diode D2、D4Anode and capacitor C2、C4Lower end be connected；Function
Rate switch S1Source electrode, diode D1Anode, capacitor C1Lower end, power switch S2Drain electrode, diode D2Cathode, capacitor
C2Upper end be connected, auxiliary switch S in node and tunable inductance networkanDrain electrode, auxiliary induction LanLeft end be connected；It is adjustable
Auxiliary induction L in inductance networkanRight end and auxiliary induction Lan-1Left end and auxiliary switch San-1Drain electrode be connected, auxiliary electricity
Feel Lan-1Right end and auxiliary induction Lan-2Left end and auxiliary switch San-2Drain electrode be connected, and so on, until auxiliary induction
La1Right end and the equivalent leakage inductance L of high frequency transformerkLeft end be connected, the node simultaneously with auxiliary switch Sa1、Sa2…SanSource electrode
It is connected；
Power switch S3Source electrode, diode D3Anode, capacitor C3Lower end, power switch S4Drain electrode, diode D4
Cathode, capacitor C4Upper end be connected, node is connected with high frequency transformer T input side lower end；
The equivalent leakage inductance L of high frequency transformerkRight end be connected with high frequency transformer T input side upper end；
A kind of full-bridge DC-DC converter containing tunable inductance network, secondary side mode block include four diode D5、D6、
D7、D8, an output filter capacitor Co, secondary side mode block physical circuit type of attachment is as follows:
High frequency transformer T outlet side upper end and diode D5Anode, diode D6Cathode be connected；High frequency transformer T is defeated
Side lower end and diode D out7Anode, diode D8Cathode be connected；Diode D5、D7Cathode and output filter capacitor Co's
Upper end and the upper end of load are connected；Diode D6、D8Anode and output filter capacitor CoLower end and load lower end be connected；
The addition of the converter tunable inductance network does not change the operation mode of converter, keeps entire transformation
The original working method of device, so that converter maintains its original control strategy being simple and efficient.
Compared with prior art, a kind of full-bridge DC-DC converter containing tunable inductance network of the present invention, beneficial effect is such as
Under:
1) a kind of, full-bridge DC-DC converter containing tunable inductance network of the invention, it is inverse in full-bridge DC-DC converter
Power transformation joined tunable inductance network in road, can adjust access auxiliary induction according to the size of converter transimission power
Size guarantees that converter works in Sofe Switch state always, improves the working efficiency of converter.
2), the present invention does not change former convertor controls mode and its way of realization, and there is control strategy simply easily to realize
Advantage.
Detailed description of the invention
Fig. 1 is full-bridge DC-DC converter circuit structural schematic diagram in the prior art.
Fig. 2 is a kind of full-bridge DC-DC converter circuit structural schematic diagram containing tunable inductance network of the present invention.
Fig. 3 enumerates a kind of containing there are three the full-bridge DC-DC converter circuit figures of auxiliary induction for the present invention.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description.
As shown in Fig. 2, a kind of full-bridge DC-DC converter containing tunable inductance network, inverse by single-phase full bridge comprising one
Primary side module, high frequency transformer T and the secondary side mode block comprising rectification circuit on power transformation road and tunable inductance network composition.It is former
Side mode block includes four power switch S1、S2、S3、S4, four diode D1、D2、D3、D4, four capacitor C1、C2、C3、C4, one
Tunable inductance network, the equivalent leakage inductance L of a high frequency transformerk.The tunable inductance network is by n auxiliary switch Sa1、Sa2…San
With n auxiliary induction La1、La2…LanIt constitutes.Primary side module physical circuit type of attachment is as follows:
Anode, the power switch S of input power1、S3Drain electrode, diode D1、D3Cathode and capacitor C1、C3Upper end phase
Even；Cathode, the power switch S of input power2、S4Source electrode, diode D2、D4Anode and capacitor C2、C4Lower end be connected；Function
Rate switch S1Source electrode, diode D1Anode, capacitor C1Lower end, power switch S2Drain electrode, diode D2Cathode, capacitor
C2Upper end be connected, auxiliary switch S in node and tunable inductance networkanDrain electrode, auxiliary induction LanLeft end be connected；It is adjustable
Auxiliary induction L in inductance networkanRight end and auxiliary induction Lan-1Left end and auxiliary switch San-1Drain electrode be connected, auxiliary electricity
Feel Lan-1Right end and auxiliary induction Lan-2Left end and auxiliary switch San-2Drain electrode be connected, and so on, until auxiliary induction
La1Right end and the equivalent leakage inductance L of high frequency transformerkLeft end be connected, the node simultaneously with auxiliary switch Sa1、Sa2…SanSource electrode
It is connected；
Power switch S3Source electrode, diode D3Anode, capacitor C3Lower end, power switch S4Drain electrode, diode D4
Cathode, capacitor C4Upper end be connected, node is connected with high frequency transformer input side lower end；
The equivalent leakage inductance L of high frequency transformerkRight end be connected with high frequency transformer input side upper end；
A kind of full-bridge DC-DC converter containing tunable inductance network, secondary side mode block include four diode D5、D6、
D7、D8, an output filter capacitor Co, secondary side mode block physical circuit type of attachment is as follows:
High frequency transformer outlet side upper end and diode D5Anode, diode D6Cathode be connected；High frequency transformer output
Side lower end and diode D7Anode, diode D8Cathode be connected；Diode D5、D7Cathode and output filter capacitor CoIt is upper
End and the upper end of load are connected；Diode D6、D8Anode and output filter capacitor CoLower end and load lower end be connected.
The power switch S of primary side module1、S2、S3、S4It is wholly-controled device, can be selected not according to the needs of workplace
The switching tube of same type, only illustrates by taking metal-oxide-semiconductor as an example herein.Diode D1、D2、D3、D4It can be power switch S1、S2、S3、S4
Parasitic diode, can also be selected according to the needs of workplace suitable diode according to the connection type parallel connection with open
Close pipe hourglass source electrode both ends；Capacitor C1、C2、C3、C4It can be power switch S1、S2、S3、S4Parasitic capacitance, can also be according to work
The needs of occasion select suitable capacitor according to the connection type parallel connection and switching tube hourglass source electrode both ends.
A kind of full-bridge DC-DC converter containing tunable inductance network of the present invention, according to input power PiWith rated power PN
Between size relation be divided into three kinds of operating modes, in conjunction with Fig. 3 to a kind of full-bridge DC-DC converter containing tunable inductance network
Specific works pattern analysis is as follows:
Work as Pi>0.75PN, auxiliary switch Sa2Conducting, the inductance of primary side module are only mentioned by the leakage inductance of transformer primary winding
For because converter transimission power is larger, so that there is enough energy to realize function in single-phase full bridge inverter circuit in leakage inductance
The no-voltage of rate switching tube is connected.
Work as 0.3PN<Pi<0.75PN, the energy in high frequency transformer leakage inductance can not realize power switch tube in inverter circuit
No-voltage is connected, at this time auxiliary switch S in tunable inductance networka2Shutdown, Sa1Conducting；Auxiliary induction La2It devotes oneself to work, due to work
Make the increase of inductance moment, the electric current in single-phase full bridge inverter circuit is almost unchanged, so the energy on working inductance will increase, makes
Obtaining converter has more energy to realize that power switch tube no-voltage is connected, therefore expands the work of the Sofe Switch of converter
Make section.
Work as Pi<0.3PN, transformer leakage inductance LfWith auxiliary induction La2Co-operation still can not achieve in converter inverter circuit
The no-voltage of power switch tube is connected.Auxiliary switch S at this timea1, Sa2Shutdown, auxiliary induction La1、La2With transformer leakage inductance LfJointly
Work.Working inductance in primary side module single-phase full bridge inverter circuit further increases, and the energy on inductance also further increases,
Further expansion inverter circuit power switch tube Sofe Switch operation interval.It ensure that converter is also being able to achieve power at light load
The Sofe Switch of switching tube is connected, and reduces converter conduction loss, improves the working efficiency of converter.
Tunable inductance network is the size according to converter transimission power, and it is single-phase to adjust accordingly converter primary side module
Auxiliary induction size in full bridge inverter.Guarantee converter when input power is larger, working inductance is smaller, reduces transformation
The time of device power reflux, improve the working frequency of converter；And converter increases its auxiliary electricity when input power is smaller
Sense, is increased the Sofe Switch traffic coverage of power switch tube in converter inverter circuit with this, improves the working efficiency of converter.It can
Inductance network is adjusted not change the control strategy of former converter；Therefore it can not only increase converter soft switch operation interval,
The characteristics of also remaining convertor controls mode simultaneously simply and being easily achieved.
Above-mentioned cited auxiliary switch power switching point 0.75PNAnd 0.3PNIt is intended merely to facilitate the one of narration and selection
A specific example.A kind of full-bridge DC-DC converter containing tunable inductance network proposed by the invention, it is auxiliary in actual operation
Help switch power switching point corresponding change can occur according to its application and the different of working condition.It here can not be to all
Embodiment be exhaustive.
In conclusion one aspect of the present invention solves the problems, such as that existing full-bridge DC-DC converter Sofe Switch section is little, separately
On the one hand without changing former convertor controls strategy, converter soft switch operation interval, while converter control can not only be increased
Mode processed is also simply easily achieved.The application changed greatly suitable for some output power ranges.
Above-mentioned implementation example of the invention is only example to illustrate the invention, and is not to reality of the invention
Apply the restriction of mode.For those of ordinary skill in the art, other can also be made on the basis of the above description
Various forms of variations and variation.Here all embodiments can not be exhaustive.It is all to belong to technical side of the invention
Case changes and variations that derived from are still in the scope of protection of the present invention.
Claims (1)
1. a kind of full-bridge DC/DC converter containing tunable inductance network, it is characterised in that: defeated comprising a DC bus-bar voltage
Incoming interface, the primary side module of a single-phase full bridge inverter circuit and tunable inductance network composition, a high frequency transformer T, one
The secondary side mode block of current rectifying and wave filtering circuit and an output DC power supply composition；
The primary side module is used to convert the DC bus-bar voltage of input to alternating current, and will be described by high frequency transformer
Alternating current transmission to corresponding secondary side mode block, the AC conversion that the secondary side mode block is used to receive at direct current,
Then the direct current being converted to is supplied electricity into out-put supply charging again；
The primary side module includes four power switch S1、S2、S3、S4, four diode D1、D2、D3、D4, four capacitor C1、C2、
C3、C4, a tunable inductance network, the equivalent leakage inductance L of a high frequency transformerk；The tunable inductance network is by n auxiliary switch
Sa1、Sa2…SanWith n auxiliary induction La1、La2…LanIt constitutes；
Primary side module physical circuit type of attachment is as follows:
Anode, the power switch S of input direct-current busbar voltage1、S3Drain electrode, diode D1、D3Cathode and capacitor C1、C3It is upper
End is connected；Cathode, the power switch S of input direct-current busbar voltage2、S4Source electrode, diode D2、D4Anode and capacitor C2、C4
Lower end be connected；Power switch S1Source electrode, diode D1Anode, capacitor C1Lower end, power switch S2Drain electrode, two poles
Pipe D2Cathode, capacitor C2Upper end be connected, auxiliary switch S in node and tunable inductance networkanDrain electrode, auxiliary induction Lan
Left end be connected；Auxiliary induction L in tunable inductance networkanRight end and auxiliary induction Lan-1Left end and auxiliary switch San-1's
Drain electrode is connected, auxiliary induction Lan-1Right end and auxiliary induction Lan-2Left end and auxiliary switch San-2Drain electrode be connected, with such
It pushes away, until auxiliary induction La1Right end and the equivalent leakage inductance L of high frequency transformerkLeft end be connected, the node simultaneously and auxiliary switch
Sa1、Sa2…SanSource electrode be connected；
Power switch S3Source electrode, diode D3Anode, capacitor C3Lower end, power switch S4Drain electrode, diode D4Yin
Pole, capacitor C4Upper end be connected, node is connected with high frequency transformer input side lower end；
The equivalent leakage inductance L of high frequency transformerkRight end be connected with high frequency transformer input side upper end；
The pair side mode block includes four rectifier diode D5、D6、D7、D8, an output filter capacitor Co, a DC power supply Vo
It constitutes；Secondary side mode block physical circuit type of attachment is as follows:
The outlet side upper end of high frequency transformer T and diode D5Anode, diode D6Cathode be connected；High frequency transformer T's is defeated
Side lower end and diode D out7Anode, diode D8Cathode be connected；Diode D5、D7Cathode and output filter capacitor Co's
Upper end and DC power supply VoUpper end be connected；Diode D6、D8Anode and output filter capacitor CoLower end and DC power supply Vo
Lower end be connected；
The full-bridge DC-DC converter, according to input power PiWith rated power PNBetween size relation be divided into three kinds of Working moulds
Formula:
Work as Pi>0.75PN, auxiliary switch Sa2Conducting, the inductance of primary side module are only provided by the leakage inductance of transformer primary winding, because
It is larger for converter transimission power, so that there is enough energy to realize power switch in single-phase full bridge inverter circuit in leakage inductance
The no-voltage of pipe is connected；
Work as 0.3PN<Pi<0.75PN, the energy in high frequency transformer leakage inductance can not realize zero electricity of power switch tube in inverter circuit
Pressure is connected, at this time auxiliary switch S in tunable inductance networka2Shutdown, Sa1Conducting；Auxiliary induction La2It devotes oneself to work, due to work electricity
Feel moment increase, the electric current in single-phase full bridge inverter circuit is almost unchanged, so the energy on working inductance will increase, so that becoming
Parallel operation has more energy to realize that power switch tube no-voltage is connected；
Work as Pi<0.3PN, transformer leakage inductance LfWith auxiliary induction La2Co-operation still can not achieve power in converter inverter circuit
The no-voltage of switching tube is connected；
Auxiliary switch S at this timea1, Sa2Shutdown, auxiliary induction La1、La2With transformer leakage inductance LfIt works together；Primary side module is single-phase complete
Working inductance in bridge inverter circuit further increases, the energy on inductance also further increases, further expansion inversion electricity
Road power switch tube Sofe Switch operation interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510316150.8A CN104935174B (en) | 2015-06-10 | 2015-06-10 | A kind of full-bridge DC/DC converter containing tunable inductance network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510316150.8A CN104935174B (en) | 2015-06-10 | 2015-06-10 | A kind of full-bridge DC/DC converter containing tunable inductance network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104935174A CN104935174A (en) | 2015-09-23 |
| CN104935174B true CN104935174B (en) | 2019-01-15 |
Family
ID=54122192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510316150.8A Active CN104935174B (en) | 2015-06-10 | 2015-06-10 | A kind of full-bridge DC/DC converter containing tunable inductance network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104935174B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111614148A (en) * | 2020-03-14 | 2020-09-01 | 青岛鼎信通讯股份有限公司 | Charging station efficiency and dynamic performance improvement scheme based on energy router |
| CN112698090A (en) * | 2020-12-07 | 2021-04-23 | 中国计量大学 | Bidirectional electric energy metering device for DAB converter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231600A (en) * | 2011-07-08 | 2011-11-02 | 南京航空航天大学 | Novel full-bridge soft switch circuit applied to arc welding inverter power supply |
| CN102244388A (en) * | 2011-07-12 | 2011-11-16 | 上海华艾软件有限公司 | Reactive power compensation and filtering device with automatically adjustable inductance ratio |
| CN103532388A (en) * | 2013-09-17 | 2014-01-22 | 中国科学院电工研究所 | Storage battery charging and discharging control method based on full bridge isolation two-way converter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100561840C (en) * | 2006-10-13 | 2009-11-18 | 南京航空航天大学 | Zero-voltage switch full-bridge direct current converter |
| US8791767B2 (en) * | 2010-10-29 | 2014-07-29 | Qualcomm Incorporated | Package inductance compensating tunable capacitor circuit |
| CN203661322U (en) * | 2013-11-15 | 2014-06-18 | 美的集团股份有限公司 | Resonant control circuit |
-
2015
- 2015-06-10 CN CN201510316150.8A patent/CN104935174B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231600A (en) * | 2011-07-08 | 2011-11-02 | 南京航空航天大学 | Novel full-bridge soft switch circuit applied to arc welding inverter power supply |
| CN102244388A (en) * | 2011-07-12 | 2011-11-16 | 上海华艾软件有限公司 | Reactive power compensation and filtering device with automatically adjustable inductance ratio |
| CN103532388A (en) * | 2013-09-17 | 2014-01-22 | 中国科学院电工研究所 | Storage battery charging and discharging control method based on full bridge isolation two-way converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104935174A (en) | 2015-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021237503A1 (en) | Three-phase cllc bidirectional direct current transformer and control method therefor | |
| Harrye et al. | Comprehensive steady state analysis of bidirectional dual active bridge DC/DC converter using triple phase shift control | |
| US8432709B2 (en) | DC-to-AC power inverting apparatus for photovoltaic modules | |
| Tan et al. | Topology and application of bidirectional isolated dc-dc converters | |
| CN104158400A (en) | Modularized high-pressure power supply circuit | |
| CN107294392A (en) | A kind of bidirectional DC/DC converter | |
| CN108512256B (en) | Multifunctional vehicle-mounted charge-discharge integrated system | |
| CN204334330U (en) | A kind of modularization high-voltage power supply circuit | |
| Kan et al. | Voltage-fed dual active bridge bidirectional DC/DC converter with an immittance network | |
| US20120281441A1 (en) | Circuit for converting a direct current voltage to an alternating current voltage | |
| CN104506039A (en) | Bidirectional isolation direct-current and direct-current converter | |
| CN112928919B (en) | Isolated high-frequency resonant DC-DC converter with wide output voltage range and method | |
| CN104901550B (en) | A kind of bridge DC/DC converters of enjoying a double blessing based on variable inductance network | |
| CN105450030B (en) | Dual transformer becomes winding isolated converter and its control method | |
| KR20180004675A (en) | Bidirectional Converter with Auxiliary LC Resonant Circuit and Operating Method thereof | |
| EP2975753B1 (en) | A three-level converter | |
| Zhang et al. | A dual-current-fed dual-active-bridge DC/DC converter with high-frequency current-ripple-friendly ports | |
| Tan et al. | Experimental discussions on operating frequencies of a bidirectional isolated DC-DC converter for a battery energy storage system | |
| CN102263513B (en) | AC-DC isolated conversion circuit | |
| CN104935174B (en) | A kind of full-bridge DC/DC converter containing tunable inductance network | |
| WO2021109305A1 (en) | Resonant cavity switching apparatus and control method for llc resonant converter | |
| CN110995004A (en) | Three-phase star-connected bidirectional LLC converter | |
| Zanatta et al. | Analysis and performance evaluation of a two-stage resonant converter for wide voltage range operation | |
| US20230322105A1 (en) | Charging device and method for operating the charging device | |
| CN103973129A (en) | Soft-switching power electronic transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |