CN106169874A - The commutator transformer of buck conversion can be realized - Google Patents
The commutator transformer of buck conversion can be realized Download PDFInfo
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- CN106169874A CN106169874A CN201610719943.9A CN201610719943A CN106169874A CN 106169874 A CN106169874 A CN 106169874A CN 201610719943 A CN201610719943 A CN 201610719943A CN 106169874 A CN106169874 A CN 106169874A
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- connects
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- chained block
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- switch tube
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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
- H02M3/33569—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 several active switching elements
-
- 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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
Abstract
The invention provides a kind of commutator transformer realizing buck conversion, including the first chained block and the second chained block；Wherein, described first chained block and described second chained block are connected in parallel；One end of described first chained block connects the first positive source and connects end, and the other end connects the first power cathode and connects end；One end of described second chained block connects second source negative pole and connects end, and the other end connects second source anode connection terminal.Also include inductance L and inductance La；Wherein, one end of described first chained block connects the first positive source by inductance La and connects end, and the other end connects the first power cathode by inductance L and connects end；The other end of described second chained block connects second source anode connection terminal by inductance L.The multiple commutator transformer that the present invention provides can realize boosting and decompression transformation simultaneously；Present configuration is simple, rationally distributed, it is easy to promote.
Description
Technical field
The present invention relates to commutator transformer, in particular it relates to a kind of commutator transformer realizing buck conversion.
Background technology
Along with shortage and the aggravation of ecological deterioration problem of traditional energy, the renewable and clean energy resource such as wind energy, solar energy
Utilize and obtained increasing attention with exploitation.The generation of electricity by new energy such as wind energy, solar energy has intermittence, the spy of randomness
Point, traditional electric network composition and running technology cannot adapt to extensive regenerative resource and access, and based on customary DC and flexibility
The multi-terminal direct current transmission system of direct current and direct current network technology are the effective means solving this problem.Owing to direct current network there is no
Unified standard, existing DC line mostly operates in different electric pressures, for the DC circuit by different electric pressures
Interconnection forms direct current network, needs to apply commutator transformer (also commonly known as DC-DC converter).Based on voltage source converter
HVDC (High Voltage DC Current, the HVDC) transmission of electricity of (Voltage Source Converter, VSC) is
System electric pressure is usually less than D.C. high voltage transmission based on Phase-controlled Converters (Line Commutated Converter, LCC)
System, in order to interconnect VSC-HVDC and LCC-HVDC to form MTDC transmission system, needs to apply commutator transformer.Additionally,
In direct-current micro-grid and DC distribution net, commutator transformer is indispensable parts equally.Therefore, high-voltage large-capacity direct current
The development of transformator is very important.
The patent of Application No. WO2013026477 proposes a kind of non-isolation type direct-current transformer topology based on MMC,
In this commutator transformer, chained block output voltage comprises DC component and AC compounent, and it comes real by alternating current-direct current power conservation
Existing submodule capacitor voltage balance, wherein AC compounent presses sine wave modulation.But in order to realize submodule capacitor voltage balance, should
There is bigger exchange circulation in commutator transformer, transformer loss is bigger.And this commutator transformer cannot realize rising simultaneously
Pressure decompression transformation.
Entitled " A versatile DC-DC converter for energy collection and
Distribution using the Modular Multilevel Converter " article propose a kind of based on module
Change the isolation type DC-DC converter topology of multi-level converter (Modular Multilevel Converter, MMC), this change
Parallel operation is substantially a DC-AC-DC changer, and it first passes through a MMC and DC voltage inversion is obtained alternating voltage, this friendship
Stream voltage obtains DC voltage by another MMC rectification after transformator transformation again.The transformator of exchange link is for real
Existing voltage matches and electrical isolation.Owing to exchange link needs AC transformer, and two stage power is needed to convert, therefore this direct current
The volume of transformator and loss are the biggest, and cost is the highest, need not the application scenario of isolation inapplicable.
The article of entitled " DC-to-dc autotransformer " proposes a kind of direct current autotransformer topology, this topology
Only part interconnection power needs, through AC transformer, therefore to reduce the capacity of AC transformer.But it needs also exist for handing over
Convertor transformer, and when transformation ratio is bigger, AC transformer capacity is close with changer total capacity.And this commutator transformer without
Method realizes voltage raising and reducing conversion simultaneously.
Summary of the invention
For defect of the prior art, it is an object of the invention to provide a kind of direct current transformation realizing buck conversion
Device.
According to the commutator transformer of the realized buck conversion that the present invention provides, including the first chained block and the second chain
Formula module；
Wherein, described first chained block and described second chained block are connected in parallel；The one of described first chained block
End connects the first positive source and connects end, and the other end connects the first power cathode and connects end；
One end of described second chained block connects second source negative pole and connects end, and the other end connects second source positive pole even
Connect end.
Preferably, inductance L and inductance La is also included；
Wherein, one end of described first chained block connects the first positive source by inductance La and connects end, and the other end leads to
Cross inductance L and connect the first power cathode connection end；
The other end of described second chained block connects second source anode connection terminal by inductance L.
Preferably, electric capacity C, inductance L1, inductance L2 and inductance La are also included；
Wherein, one end of described first chained block connects the first positive source by inductance La, inductance L1 and connects end；Institute
The one end stating the second chained block connects second source negative pole connection end by inductance L2；
One end of electric capacity C connects one end of described first chained block, and the other end connects the one of described second chained block
End.
Preferably, electric capacity C, inductance L1, inductance L2 and inductance La are also included；
Wherein, one end of described first chained block connects the first positive source by inductance La and connects end, and the other end leads to
Cross inductance L1 and connect second source negative pole connection end；
One end of described second chained block connects second source anode connection terminal by inductance L2；
One end of electric capacity C connects the other end of described first chained block, and the other end connects described second chained block
One end.
Preferably, electric capacity C, inductance L1, inductance L2 and inductance La are also included；
Wherein, one end of described second chained block connects the first positive source and connects end, and the other end connects the one of electric capacity C
End, one end of inductance L1；
The other end of inductance L1 connects second source anode connection terminal；
The other end of electric capacity C connects one end of inductance L2, the other end of inductance L2 connect the first power cathode connect end, the
Two power cathodes connect end；
One end of described first chained block connects the other end of electric capacity C, and the other end connects second source by inductance La
Anode connection terminal.
Preferably, electric capacity C, inductance L1, inductance L2 and inductance La are also included；
Wherein, on the one hand one end of described second chained block connects the first positive source by inductance L1 and connects end, separately
On the one hand connecting electric capacity C one end, the other end connects second source anode connection terminal；
The other end of electric capacity C connects one end of inductance L2, one end of inductance La, and the other end of inductance L2 connects second source
Anode connection terminal；
The other end of inductance La connects one end of described first chained block, and the other end connects second source positive pole and connects
End.
Preferably, described first chained block, described second chained block use multiple semi-bridge type submodules or bridge-type
Submodule is in series.
Preferably, described semi-bridge type submodule includes power supply Vc, power switch tube S 1 and power switch tube S 2；
Wherein, the C end of power switch tube S 1 connects the positive pole of power supply Vc, and on the one hand E end connects the C of power switch tube S 2
End, is on the other hand set to the first connection end；
On the one hand the E end of power switch tube S 2 connects the negative pole of power supply Vc, is on the other hand set to the second connection end.
Preferably, described bridge-type submodule includes power supply Vc, power switch tube S 1, power switch tube S 2, power switch
Pipe S3 and power switch tube S 4；
Wherein, the C end of power switch tube S 1 connects the positive pole of power supply Vc, and on the one hand E end connects the C of power switch tube S 2
End, is on the other hand set to the first connection end；
The E end of power switch tube S 2 connects the negative pole of power supply Vc；
The C end of power switch tube S 3 connects the positive pole of power supply Vc, and on the one hand E end connects the C end of power switch tube S 4, another
Aspect is set to the second connection end；
The E end of power switch tube S 4 connects the negative pole of power supply Vc.
Compared with prior art, the present invention has a following beneficial effect:
1, the multiple commutator transformer that the present invention provides can realize boosting and decompression transformation simultaneously；
2, present configuration is simple, rationally distributed, it is easy to promote.
Accompanying drawing explanation
By the detailed description non-limiting example made with reference to the following drawings of reading, the further feature of the present invention,
Purpose and advantage will become more apparent upon:
Fig. 1 is the circuit diagram of semi-bridge type submodule in the present invention；
Fig. 2 is the circuit diagram of bridge-type submodule in the present invention；
Fig. 3 is the structure schematic diagram of chained block in the present invention；
Fig. 4 is the structural representation of first embodiment in the present invention；
Fig. 5 is the structural representation of the second embodiment in the present invention；
Fig. 6 is the structural representation of the 3rd embodiment in the present invention；
Fig. 7 is the structural representation of the 4th embodiment in the present invention；
Fig. 8 is the structural representation of the 5th embodiment in the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in the technology of this area
Personnel are further appreciated by the present invention, but limit the present invention the most in any form.It should be pointed out that, the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement.These broadly fall into the present invention
Protection domain.
Fig. 4 shows the structural representation of first embodiment in the present invention, and in the present embodiment, what the present invention provided can be real
The commutator transformer of existing buck conversion, for connecting electric pressure different DC voltages U in a steady streamdc1And Udc2, can realize anti-
The buck conversion of polarity, wherein Udc1And Udc2Reversed polarity connects, including the first chained block and the second chained block；
Wherein, described first chained block and described second chained block are connected in parallel；The one of described first chained block
End connects the first positive source and connects end, and the other end connects the first power cathode and connects end；
One end of described second chained block connects second source negative pole and connects end, and the other end connects second source positive pole even
Connect end.
The commutator transformer of the realized buck conversion that the present invention provides, also includes inductance L and inductance La；
Wherein, one end of described first chained block connects the first positive source by inductance La and connects end, and the other end leads to
Cross inductance L and connect the first power cathode connection end；
The other end of described second chained block connects second source anode connection terminal by inductance L.
Fig. 5 shows the structural representation of the second embodiment in the present invention, and in the present embodiment, what the present invention provided can be real
The commutator transformer of existing buck conversion, for connecting the direct voltage source U that electric pressure is differentdc1And Udc2, antipole can be realized
Property buck conversion, wherein Udc1And Udc2Reversed polarity connects, and also includes electric capacity C, inductance L1, inductance L2 and inductance La；
Wherein, one end of described first chained block connects the first positive source by inductance La, inductance L1 and connects end；Institute
The one end stating the second chained block connects second source negative pole connection end by inductance L2；
One end of electric capacity C connects one end of described first chained block, and the other end connects the one of described second chained block
End.
Fig. 6 shows the structural representation of the 3rd embodiment in the present invention, and in the present embodiment, what the present invention provided can be real
The commutator transformer of existing buck conversion, for connecting the direct voltage source U that electric pressure is differentdc1And Udc2, wherein Udc1With
Udc2Positive polarity connects, and can realize the buck conversion of positive polarity, also include electric capacity C, inductance L1, inductance L2 and inductance La；
Wherein, one end of described first chained block connects the first positive source by inductance La and connects end, and the other end leads to
Cross inductance L1 and connect second source negative pole connection end；
One end of described second chained block connects second source anode connection terminal by inductance L2；
One end of electric capacity C connects the other end of described first chained block, and the other end connects described second chained block
One end.
Fig. 7 shows the structural representation of the 4th embodiment in the present invention, and in the present embodiment, what the present invention provided can be real
The commutator transformer of existing buck conversion, for connecting the direct voltage source U that electric pressure is differentdc1And Udc2, wherein Udc1With
Udc2Positive polarity connects, and can realize the buck conversion of positive polarity, also include electric capacity C, inductance L1, inductance L2 and inductance La；
Wherein, one end of described second chained block connects the first positive source and connects end, and the other end connects the one of electric capacity C
End, one end of inductance L1；
The other end of inductance L1 connects second source anode connection terminal；
The other end of electric capacity C connects one end of inductance L2, the other end of inductance L2 connect the first power cathode connect end, the
Two power cathodes connect end；
One end of described first chained block connects the other end of electric capacity C, and the other end connects second source by inductance La
Anode connection terminal.
Fig. 8 shows the structural representation of the 5th embodiment in the present invention, and in the present embodiment, what the present invention provided can be real
The commutator transformer of existing buck conversion, for connecting the direct voltage source U that electric pressure is differentdc1And Udc2, wherein Udc1With
Udc2Positive polarity connects, and can realize the buck conversion of positive polarity, also include electric capacity C, inductance L1, inductance L2 and inductance La；
Wherein, on the one hand one end of described second chained block connects the first positive source by inductance L1 and connects end, separately
On the one hand connecting electric capacity C one end, the other end connects second source anode connection terminal；
The other end of electric capacity C connects one end of inductance L2, one end of inductance La, and the other end of inductance L2 connects second source
Anode connection terminal；
The other end of inductance La connects one end of described first chained block, and the other end connects second source positive pole and connects
End.
The most described first chained block, described second chained block use multiple semi-bridge type submodules or full-bridge
Type submodule is in series.
Described semi-bridge type submodule includes power supply Vc, power switch tube S 1 and power switch tube S 2；
Wherein, the C end of power switch tube S 1 connects the positive pole of power supply Vc, and on the one hand E end connects the C of power switch tube S 2
End, is on the other hand set to the first connection end；
On the one hand the E end of power switch tube S 2 connects the negative pole of power supply Vc, is on the other hand set to the second connection end.
Described bridge-type submodule include power supply Vc, power switch tube S 1, power switch tube S 2, power switch tube S 3 and
Power switch tube S 4；
Wherein, the C end of power switch tube S 1 connects the positive pole of power supply Vc, and on the one hand E end connects the C of power switch tube S 2
End, is on the other hand set to the first connection end；
The E end of power switch tube S 2 connects the negative pole of power supply Vc；
The C end of power switch tube S 3 connects the positive pole of power supply Vc, and on the one hand E end connects the C end of power switch tube S 4, another
Aspect is set to the second connection end；
The E end of power switch tube S 4 connects the negative pole of power supply Vc.
All chained block output voltages comprise DC component and AC compounent, the first chained block by AC compounent to
Second chained block transmission active power balances with the discharge and recharge realizing submodule electric capacity.The wherein friendship of chained block output voltage
Flow component can be sinusoidal wave, square wave and pulse width modulated wave.
As a example by the first direct coupling type commutator transformer in Fig. 4, the direct current of the first chained block output voltage divides
Amount is Udc1, the DC component of the second chained block output voltage is Udc2.First chained block and the second chained block output electricity
There is certain phase angle difference to produce exchange circulation in the AC compounent of pressure so that the first chained block and the exchange of the second chained block
Active power, it is achieved the discharge and recharge balance of all submodules.Wherein the AC compounent of chained block output voltage can be sinusoidal wave,
Square wave and pulse width modulated wave.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformation or amendment within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (9)
1. the commutator transformer that can realize buck conversion, it is characterised in that include the first chained block and the second chain type
Module；
Wherein, described first chained block and described second chained block are connected in parallel；One end of described first chained block is even
Connecing the first positive source and connect end, the other end connects the first power cathode and connects end；
One end of described second chained block connects second source negative pole and connects end, and the other end connects second source positive pole and connects
End.
The commutator transformer realizing buck conversion the most according to claim 1, it is characterised in that also include inductance L
With inductance La；
Wherein, one end of described first chained block connects the first positive source by inductance La and connects end, and the other end is by electricity
Sense L connects the first power cathode and connects end；
The other end of described second chained block connects second source anode connection terminal by inductance L.
The most according to claim 1 realize buck conversion commutator transformer, it is characterised in that also include electric capacity C,
Inductance L1, inductance L2 and inductance La；
Wherein, one end of described first chained block connects the first positive source by inductance La, inductance L1 and connects end；Described
One end of two chained block connects second source negative pole by inductance L2 and connects end；
One end of electric capacity C connects one end of described first chained block, and the other end connects one end of described second chained block.
The most according to claim 1 realize buck conversion commutator transformer, it is characterised in that also include electric capacity C,
Inductance L1, inductance L2 and inductance La；
Wherein, one end of described first chained block connects the first positive source by inductance La and connects end, and the other end is by electricity
Sense L1 connects second source negative pole and connects end；
One end of described second chained block connects second source anode connection terminal by inductance L2；
One end of electric capacity C connects the other end of described first chained block, and the other end connects one end of described second chained block.
The most according to claim 1 realize buck conversion commutator transformer, it is characterised in that also include electric capacity C,
Inductance L1, inductance L2 and inductance La；
Wherein, one end of described second chained block connect first positive source connect end, the other end connect electric capacity C one end,
One end of inductance L1；
The other end of inductance L1 connects second source anode connection terminal；
The other end of electric capacity C connects one end of inductance L2, and the other end of inductance L2 connects the first power cathode and connects end, the second electricity
Source negative pole connects end；
One end of described first chained block connects the other end of electric capacity C, and the other end connects second source positive pole by inductance La
Connect end.
The most according to claim 1 realize buck conversion commutator transformer, it is characterised in that also include electric capacity C,
Inductance L1, inductance L2 and inductance La；
Wherein, on the one hand one end of described second chained block connects the first positive source by inductance L1 and connects end, the opposing party
Face connects electric capacity C one end, and the other end connects second source anode connection terminal；
The other end of electric capacity C connects one end of inductance L2, one end of inductance La, and the other end of inductance L2 connects second source positive pole
Connect end；
The other end of inductance La connects one end of described first chained block, and the other end connects second source anode connection terminal.
The commutator transformer realizing buck conversion the most according to claim 1, it is characterised in that described first chain type
Module, described second chained block use multiple semi-bridge type submodules or bridge-type submodule to be in series.
The commutator transformer realizing buck conversion the most according to claim 7, it is characterised in that described semi-bridge type
Module includes power supply Vc, power switch tube S 1 and power switch tube S 2；
Wherein, the C end of power switch tube S 1 connects the positive pole of power supply Vc, and on the one hand E end connects the C end of power switch tube S 2, separately
On the one hand it is set to the first connection end；
On the one hand the E end of power switch tube S 2 connects the negative pole of power supply Vc, is on the other hand set to the second connection end.
The commutator transformer realizing buck conversion the most according to claim 7, it is characterised in that described bridge-type
Module includes power supply Vc, power switch tube S 1, power switch tube S 2, power switch tube S 3 and power switch tube S 4；
Wherein, the C end of power switch tube S 1 connects the positive pole of power supply Vc, and on the one hand E end connects the C end of power switch tube S 2, separately
On the one hand it is set to the first connection end；
The E end of power switch tube S 2 connects the negative pole of power supply Vc；
The C end of power switch tube S 3 connects the positive pole of power supply Vc, and on the one hand E end connects the C end of power switch tube S 4, on the other hand
It is set to the second connection end；
The E end of power switch tube S 4 connects the negative pole of power supply Vc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610719943.9A CN106169874A (en) | 2016-08-24 | 2016-08-24 | The commutator transformer of buck conversion can be realized |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610719943.9A CN106169874A (en) | 2016-08-24 | 2016-08-24 | The commutator transformer of buck conversion can be realized |
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| CN106169874A true CN106169874A (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610719943.9A Pending CN106169874A (en) | 2016-08-24 | 2016-08-24 | The commutator transformer of buck conversion can be realized |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111555261A (en) * | 2020-05-12 | 2020-08-18 | 盐城工学院 | New framework photovoltaic module based on passive connector |
| CN111711360A (en) * | 2020-06-04 | 2020-09-25 | 上海交通大学 | Energy-sustaining feedback type high-power voltage reduction circuit and control method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111555261A (en) * | 2020-05-12 | 2020-08-18 | 盐城工学院 | New framework photovoltaic module based on passive connector |
| CN111555261B (en) * | 2020-05-12 | 2023-11-21 | 盐城工学院 | Photovoltaic module based on passive connector |
| CN111711360A (en) * | 2020-06-04 | 2020-09-25 | 上海交通大学 | Energy-sustaining feedback type high-power voltage reduction circuit and control method thereof |
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Application publication date: 20161130 |
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