CN106685237A - Alternating current-direct current isolation type semi-bridge converter matched with three channels of direct current micro-grid - Google Patents
Alternating current-direct current isolation type semi-bridge converter matched with three channels of direct current micro-grid Download PDFInfo
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- CN106685237A CN106685237A CN201710149545.2A CN201710149545A CN106685237A CN 106685237 A CN106685237 A CN 106685237A CN 201710149545 A CN201710149545 A CN 201710149545A CN 106685237 A CN106685237 A CN 106685237A
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- winding
- direct
- bridge converter
- current
- direct current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses an alternating current-direct current isolation type semi-bridge converter matched with three channels of a direct current micro-grid. The alternating current-direct current isolation type semi-bridge converter is composed of a direct-current high-voltage side semi-bridge converter, a compensation type three-winding isolation type transformer, an alternating current side semi-bridge converter, a three-phase bridge inverter and a direct-current low-voltage side semi-bridge converter, wherein the compensation type three-winding isolation type transformer is a forward type structure high-frequency transformer mainly composed of one primary side winding and two secondary side windings; one end of each winding is connected with a movable phase compensation type inductor in series; and furthermore, the compensation type three-winding isolation type transformer is used as the center to construct the direct current micro-grid matched with three alternating current and direct current bidirectional working channels. The alternating current-direct current isolation type semi-bridge converter is reasonable in structure, convenient to construct and good in commonality; and the alternating current-direct current isolation type semi-bridge converter can be directly matched with the direct current micro-grid so as to be adaptive to actual application requirements of users with different voltage grades, and efficient conversion of direct current and alternating current power supplies between the direct current micro-grids can also be realized.
Description
Technical field
It is to be related to a kind of matching direct current micro- in particular the present invention relates to alternating current-direct current isolated form half-bridge converter field
Power network triple channel alternating current-direct current isolated form half-bridge converter.
Background technology
With wind energy, the large-scale application of solar energy distributed new energy system, to improve the synthesis of electric energy
Efficiency, each distributed new electric power system is integrated into micro-grid system has turned into a kind of inevitable development trend, micro-capacitance sensor
There are exchange two kinds of forms of micro-capacitance sensor and direct-current grid, compared to exchange micro-capacitance sensor, direct-current grid has raising powered operation effect
The advantage of rate, harmonic carcellation interference, reduction line loss, electromagnetic radiation and the improvement user side quality of power supply, therefore use direct current
The distributed grid-connected of micro-capacitance sensor is current widest new-energy grid-connected mode, not only solves some areas new energy access and asks
Topic, is used to realize distributed new plug and play, and can also be with the coordinated operation of bulk power grid；From micro-grid system core skill
From the point of view of the development course of art, to match the energy conversion of different voltage class, the binary channels DC/DC converter ranks of low side are experienced
Section, to the high-end triple channel DC/DC converter stages, but its circuit structure aspect is substantially confined to the conversion art of DC/DC；
In addition, influenceed by traditional ac power supply system standard applicating history is permanent, the ratio that exchange user occupies also than larger, and
And the mixed user of AC and DC can also long-term co-existence, the multichannel conversion of directly matching direct-current grid is also lacked at this stage
Device, is used to adapt to the practical application request of different voltage class users.
The content of the invention
In view of this, the present invention is intended to provide matching direct-current grid triple channel alternating current-direct current isolated form half-bridge converter, no
But can solve the problem that existing triple channel converter can not meet AC and DC hybrid subscriber practical application request, and can be more preferably
Improve direct current supply technical system, additionally it is possible to realize between direct-current grid efficient direct current and exchange conversion.
In order to realize the purpose of foregoing invention, the present invention is specific provide a kind of matching direct-current grid triple channel alternating current-direct current every
Release half-bridge converter, including：High direct voltage side half-bridge converter, offset-type three winding isolated form transformer, AC half-bridge
Converter, three-phase bridge inverter and DC low-voltage side half-bridge converter；
（1）Offset-type three winding isolated form transformer, for undertaking exchange and direct current conversion between direct-current grid triple channel
What phase compensation and the conversion of associated transformer power were triggered between electrical isolation, the conversion of power supply energy, each winding circuit rushes
Energy snubber is hit, it is mainly made up of the positive activation type structure high frequency transformer of 1 first side winding and 2 secondary side windings, and
And one end of each winding is serially connected with a phase-shift compensation type inductance, wherein first side winding is winding N1, secondary side winding
Respectively winding N2 and winding N3, phase-shift compensation type inductance is respectively inductance L1, inductance L2 and inductance L3, inductance L1 be serially connected in around
One end of group N1, inductance L2 is serially connected in one end of winding N2, and inductance L3 is serially connected in one end of winding N3；
In addition, constructing three exchanges of matching and direct current two-way operation passage centered on offset-type three winding isolated form transformer
Direct-current grid, its winding N1 and inductance L1 are connected with high direct voltage side half-bridge converter output end, winding N2 and inductance L2 with
AC half-bridge converter input is connected, and winding N3 and inductance L3 is connected with DC low-voltage side half-bridge converter input；
（2）High direct voltage side half-bridge converter input is connected with high voltage dc bus HV+ and high voltage dc bus HV-, exchange
Side half-bridge converter output end is connected with the input of three-phase bridge inverter, the output end and three-phase of further three-phase bridge inverter
Ac bus PHASE1, three-phase alternating current bus PHASE2 and three-phase alternating current bus PHASE3 are connected, DC low-voltage side semi-bridge alternation
Device output end is connected with low-voltage direct bus LV+ and low-voltage direct bus LV-；
（3）Described matching direct-current grid triple channel alternating current-direct current isolated form half-bridge converter energy conversion, there is three two-way works
Make passage, the first two-way operation passage is high voltage dc bus side, described matching direct-current grid triple channel alternating current-direct current isolation
Service aisle between type half-bridge converter and low-voltage direct bus bar side, the second two-way operation passage is high voltage dc bus side, institute
Service aisle between the matching direct-current grid triple channel alternating current-direct current isolated form half-bridge converter and three-phase alternating current bus bar side stated, the
Three two-way operation passages are low-voltage direct bus bar side, described matching direct-current grid triple channel alternating current-direct current isolated form semi-bridge alternation
Service aisle between device and three-phase alternating current bus bar side.
The beneficial effects of the invention are as follows, there is provided a kind of matching direct-current grid triple channel alternating current-direct current isolated form semi-bridge alternation
Device, has the advantages that rational in infrastructure, structure convenience, versatility are good, directly can not only match direct-current grid to adapt to difference
The practical application request of voltage class user, but also efficient direct current and AC power between direct-current grid can be realized
Conversion.
Brief description of the drawings
Fig. 1 is the structural representation of present invention matching direct-current grid triple channel alternating current-direct current isolated form half-bridge converter.
Fig. 2 is a specific embodiment of present invention matching direct-current grid triple channel alternating current-direct current isolated form half-bridge converter
Schematic diagram.
Specific embodiment
For make the purpose, technical scheme and advantage of the embodiment of the present invention it is clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technology of the present invention composition, technical scheme and embodiment are clearly and completely described.Obviously the reality described by
It is only a part of embodiment of the invention to apply example, rather than whole embodiments.Based on the embodiment in the present invention, this technology
The other embodiment that the those of ordinary skill in field is obtained under the premise of creative work is not made, belongs to of the invention
Within claims.
In conjunction with the drawings and specific embodiments mode, the present invention is further described.
As shown in Figure 1, it is the structure of present invention matching direct-current grid triple channel alternating current-direct current isolated form half-bridge converter
Schematic diagram, including：High direct voltage side half-bridge converter, offset-type three winding isolated form transformer, AC half-bridge converter, three
Phase bridge inverter and DC low-voltage side half-bridge converter；
（1）Offset-type three winding isolated form transformer, for undertaking exchange and direct current conversion between direct-current grid triple channel
What phase compensation and the conversion of associated transformer power were triggered between electrical isolation, the conversion of power supply energy, each winding circuit rushes
Energy snubber is hit, it is mainly made up of the positive activation type structure high frequency transformer of 1 first side winding and 2 secondary side windings, and
And one end of each winding is serially connected with a phase-shift compensation type inductance, wherein first side winding is winding N1, secondary side winding
Respectively winding N2 and winding N3, phase-shift compensation type inductance is respectively inductance L1, inductance L2 and inductance L3, inductance L1 be serially connected in around
One end of group N1, inductance L2 is serially connected in one end of winding N2, and inductance L3 is serially connected in one end of winding N3；
In addition, constructing three exchanges of matching and direct current two-way operation passage centered on offset-type three winding isolated form transformer
Direct-current grid, its winding N1 and inductance L1 are connected with high direct voltage side half-bridge converter output end, winding N2 and inductance L2 with
AC half-bridge converter input is connected, and winding N3 and inductance L3 is connected with DC low-voltage side half-bridge converter input；
（2）High direct voltage side half-bridge converter input is connected with high voltage dc bus HV+ and high voltage dc bus HV-, exchange
Side half-bridge converter output end is connected with the input of three-phase bridge inverter, the output end and three-phase of further three-phase bridge inverter
Ac bus PHASE1, three-phase alternating current bus PHASE2 and three-phase alternating current bus PHASE3 are connected, DC low-voltage side semi-bridge alternation
Device output end is connected with low-voltage direct bus LV+ and low-voltage direct bus LV-；
（3）Described matching direct-current grid triple channel alternating current-direct current isolated form half-bridge converter energy conversion, there is three two-way works
Make passage, the first two-way operation passage is high voltage dc bus side, described matching direct-current grid triple channel alternating current-direct current isolation
Service aisle between type half-bridge converter and low-voltage direct bus bar side, the second two-way operation passage is high voltage dc bus side, institute
Service aisle between the matching direct-current grid triple channel alternating current-direct current isolated form half-bridge converter and three-phase alternating current bus bar side stated, the
Three two-way operation passages are low-voltage direct bus bar side, described matching direct-current grid triple channel alternating current-direct current isolated form semi-bridge alternation
Service aisle between device and three-phase alternating current bus bar side.
As shown in Figure 2, it is match direct-current grid triple channel alternating current-direct current isolated form half-bridge converter one of the invention
Specific embodiment schematic diagram.
（1）Offset-type three winding isolated form transformer T therein is positive activation type structure high frequency transformer, and first side winding is
Winding N1, secondary side winding is respectively winding N2 and winding N3, and one end of each winding is serially connected with a phase-shift compensation
Type inductance, phase-shift compensation type inductance difference inductance L1, inductance L2 and inductance L3；
High direct voltage side half-bridge converter is typical semi-bridge type structure, mainly by a switch bridge arm and an electric capacity bridge arm simultaneously
Joint group is into the switching tube that it switchs bridge arm is that MOSFET is managed, respectively switching tube S1 and switching tube S2, and electric capacity bridge arm is electric capacity
C1 and electric capacity C2；
AC half-bridge converter is typical semi-bridge type structure, mainly by a switch bridge arm and an electric capacity bridge arm parallel connection group
Into, its switch bridge arm switching tube be MOSFET pipe, respectively switching tube S3 and switching tube S4, and electric capacity bridge arm be electric capacity C3 and
Electric capacity C4；
DC low-voltage side half-bridge converter is typical semi-bridge type structure, mainly by a switch bridge arm and an electric capacity bridge arm simultaneously
Joint group is into the switching tube that it switchs bridge arm is that MOSFET is managed, respectively switching tube S5 and switching tube S6, and electric capacity bridge arm is electric capacity
C5 and electric capacity C6；
Three-phase bridge inverter it is main by three-phase inverter with three-phase LC wave filter groups into wherein three-phase inverter is managed by MOSFET
The three-phase bridge arm of composition, respectively switching tube S7, switching tube S8, switching tube S9, switching tube S10, switching tube S11 and switching tube
S12, and the inductance used in the middle of three-phase LC wave filters is respectively inductance L4, inductance L5 and inductance L6, the electric capacity of use is respectively
Electric capacity C8, electric capacity C9 and electric capacity C10；
（2）In order to match the conversion of the power supply energy in direct-current grid, different voltage class AC and DC hybrid subscribers are met
Practical application request, constructs three exchanges of matching and the two-way work of direct current centered on offset-type three winding isolated form transformer T
Make channel DC micro-capacitance sensor, be used to realize to match the conversion of power supply energy between direct-current grid triple channel, and passage two-by-two
Between transfer process can realize bidirectional reversible.
The above is only presently preferred embodiments of the present invention, and any formal limitation is not made to the present invention.If
If carrying out various changes and modifications to embodiment of the present invention, but still within the spirit and principles in the present invention, should be included in
Within claims of the invention.
Claims (1)
1. direct-current grid triple channel alternating current-direct current isolated form half-bridge converter is matched, including：High direct voltage side half-bridge converter, benefit
Type three winding isolated form transformer, AC half-bridge converter, three-phase bridge inverter and DC low-voltage side half-bridge converter are repaid, its
It is characterised by：
（1）Offset-type three winding isolated form transformer, for undertaking exchange and direct current conversion between direct-current grid triple channel
What phase compensation and the conversion of associated transformer power were triggered between electrical isolation, the conversion of power supply energy, each winding circuit rushes
Energy snubber is hit, it is mainly made up of the positive activation type structure high frequency transformer of 1 first side winding and 2 secondary side windings, and
And one end of each winding is serially connected with a phase-shift compensation type inductance, wherein first side winding is winding N1, secondary side winding
Respectively winding N2 and winding N3, phase-shift compensation type inductance is respectively inductance L1, inductance L2 and inductance L3, inductance L1 be serially connected in around
One end of group N1, inductance L2 is serially connected in one end of winding N2, and inductance L3 is serially connected in one end of winding N3；
In addition, constructing three exchanges of matching and direct current two-way operation passage centered on offset-type three winding isolated form transformer
Direct-current grid, its winding N1 and inductance L1 are connected with high direct voltage side half-bridge converter output end, winding N2 and inductance L2 with
AC half-bridge converter input is connected, and winding N3 and inductance L3 is connected with DC low-voltage side half-bridge converter input；
（2）High direct voltage side half-bridge converter input is connected with high voltage dc bus HV+ and high voltage dc bus HV-, exchange
Side half-bridge converter output end is connected with the input of three-phase bridge inverter, the output end and three-phase of further three-phase bridge inverter
Ac bus PHASE1, three-phase alternating current bus PHASE2 and three-phase alternating current bus PHASE3 are connected, DC low-voltage side semi-bridge alternation
Device output end is connected with low-voltage direct bus LV+ and low-voltage direct bus LV-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710149545.2A CN106685237A (en) | 2017-03-14 | 2017-03-14 | Alternating current-direct current isolation type semi-bridge converter matched with three channels of direct current micro-grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710149545.2A CN106685237A (en) | 2017-03-14 | 2017-03-14 | Alternating current-direct current isolation type semi-bridge converter matched with three channels of direct current micro-grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106685237A true CN106685237A (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710149545.2A Pending CN106685237A (en) | 2017-03-14 | 2017-03-14 | Alternating current-direct current isolation type semi-bridge converter matched with three channels of direct current micro-grid |
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| CN (1) | CN106685237A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556833A (en) * | 2019-09-05 | 2019-12-10 | 北京国电光宇机电设备有限公司 | Multi-port microgrid energy router |
| CN111244961A (en) * | 2020-03-04 | 2020-06-05 | 上海钧功电子科技有限公司 | High-efficiency power supply system and method |
-
2017
- 2017-03-14 CN CN201710149545.2A patent/CN106685237A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556833A (en) * | 2019-09-05 | 2019-12-10 | 北京国电光宇机电设备有限公司 | Multi-port microgrid energy router |
| CN111244961A (en) * | 2020-03-04 | 2020-06-05 | 上海钧功电子科技有限公司 | High-efficiency power supply system and method |
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Application publication date: 20170517 |