CN106549567A - Modularity high voltage induction and capacitor topology circuit - Google Patents
Modularity high voltage induction and capacitor topology circuit Download PDFInfo
- Publication number
- CN106549567A CN106549567A CN201610896204.7A CN201610896204A CN106549567A CN 106549567 A CN106549567 A CN 106549567A CN 201610896204 A CN201610896204 A CN 201610896204A CN 106549567 A CN106549567 A CN 106549567A
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- China
- Prior art keywords
- power switch
- switch pipe
- diode
- high voltage
- bridge
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
-
- 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
Abstract
The invention provides a kind of modularity high voltage induction and capacitor topology circuit, including：High-voltage capacitance topography module and high voltage induction topography module, wherein：The high-voltage capacitance topography module includes multiple half-bridge modules being sequentially connected in series；The high voltage induction topography module includes inductance and multiple full-bridge modules being sequentially connected in series.The modularity high voltage induction and capacitor topology circuit that the present invention is provided can increase electric pressure by connecting more modules, there is expansibility and the low cost of overhaul, and integrated circuit simple structure, has avoided the difficult design of conventional high-tension LC circuit.
Description
Technical field
The present invention relates to technical field of direct current power transmission, in particular it relates to a kind of modularity high voltage induction and capacitor topology electricity
Road.
Background technology
In order to interconnect to form direct current network the HVDC transmission system of different electric pressures, high-voltage large-capacity is needed
Commutator transformer (also commonly known as DC/DC changers).And in extra-high voltage DC/DC changer, due to switching frequency typically compared with
It is low, need using big capacitance high-voltage capacitance and big inductance value inductance.But big capacitance high-voltage capacitance needs hundreds of capacitance module strings
Parallel connection, controls extremely complex relatively difficult to achieve；And the design and manufacture of big inductance value high voltage induction equally exist very big difficulty.
The defect of the retrieval to prior art and presence is presented herein below：
Application Number (patent)：WO2013026477, title:Bidirectional unisolated converter
Propose based on MMC (Modular Multilevel Converter, MMC) in the document of based on cascaded cells
Non-isolation type direct-current transformer topology, in the commutator transformer chained block output voltage comprising DC component with exchange point
Amount, it realizes that by alternating current-direct current power conservation submodule capacitor voltage is balanced, and wherein AC compounent presses sine wave modulation.With every
Release DC-AC-DC changers are compared, and it does not need AC transformer, and does not need Two Stages, therefore cost is lower.But it is
Realize that submodule capacitor voltage is balanced, in the commutator transformer, there is larger exchange circulation, transformer loss is larger, and
Required filter inductance inductance value is very big so that the overall volume of transformator is larger.Also due to the topology is only with semi-bridge type
Submodule, which can not be realized that polarity of voltage is inverted, not apply to and interconnect with LCC/VSC.Additionally, in order to filter output current ripple
Dynamic, the commutator transformer needs the hv filtering inductance of a very big inductance value, and this causes the topology apply in extra-high voltage neck
Domain.
It is entitled：A kind of novel voltage equilibrium of super capacitor series mould set and detection method, are published in the power electronics phase
The document of periodical proposes the solution of a rational power storage and release.However, the running voltage of super capacitor is usual
It is limited in the value of a setting, therefore need will be multiple super capacitors monomer series-connected higher electric narrow to obtain.In this series connection
In structure, the manufacturing tolerance of monomer will cause the pressure drop on each monomer different.Therefore, weaker monomer will bear overvoltage.This
Planting unbalanced voltage will be inconsistent in the life-span for causing monomer.Therefore, it is necessary to pressure is done to ultracapacitor monomer process.And
And the technical scheme in above-mentioned document needs to arrange special drive circuit, control is aided in, with the increase of series capacitance number,
The complexity of control circuit also can increase therewith, therefore not be suitable for the series connection of hundreds of electric capacity.
The content of the invention
For defect of the prior art, it is an object of the invention to provide a kind of modularity high voltage induction and capacitor topology electricity
Road.
The modularity high voltage induction provided according to the present invention and capacitor topology circuit, including：High-voltage capacitance topography module and
High voltage induction topography module, wherein：The high-voltage capacitance topography module includes multiple half-bridge modules being sequentially connected in series；The high pressure
Inductance topography module includes inductance and multiple full-bridge modules being sequentially connected in series.
Preferably, the half-bridge module includes：Including：Electric capacity, the first power switch pipe, the second power switch pipe, first
Diode, the second diode；The positive pole of electric capacity is connected with the first power switch pipe collector, the first diode cathode；First work(
Rate switching tube emitter stage, the first diode cathode are connected and constitute with the second power switch pipe collector, the second diode cathode
One end of half-bridge module；Second power switch pipe emitter stage, the second diode cathode are connected to the negative pole of electric capacity and constitute half
The other end of bridge module.
Preferably, the full-bridge modules include：Electric capacity, the first power switch pipe, the second power switch pipe, the 3rd power are opened
Guan Guan, the 4th power switch pipe, the first diode, the second diode, the 3rd diode, the 4th diode；The positive pole of electric capacity point
Do not connect the colelctor electrode of the first power switch pipe, the colelctor electrode of the 3rd power switch pipe, the negative pole of the first diode, the two or two pole
The negative pole of pipe；The emitter stage of the first power switch pipe, the positive pole of the first diode and the second power switch pipe collector, the two or two
Pole pipe negative pole is connected and constitutes one end of the full-bridge modules；The emitter stage of the 3rd power switch pipe, the positive pole of the 3rd diode
It is connected and constitutes the other end of the full-bridge modules with the 4th power switch pipe collector, the 4th diode cathode；Second power
The emitter stage of switching tube, the second diode cathode, the 4th power switch pipe emitter stage, the 4th diode cathode are connected to electric capacity
Negative pole.
Preferably, multiple full-bridge modules being sequentially connected in series constitute a total full bridge structure, one end of total full bridge structure
It is connected with one end of the inductance in the high voltage induction topography module, the other end of total full bridge structure, the other end difference of inductance
Constitute the two ends of high voltage induction topography module.
Preferably, the base stage of the first power switch pipe, the base stage of the second power switch pipe, the base of the 3rd power switch pipe
Pole, the base stage of the 4th power switch pipe are connected with the outfan of PWM output modules, and the PWM output modules are used to export two groups
The impulse wave of level, the impulse wave can determine the first power switch pipe, the second power switch pipe, the 3rd power switch pipe,
The open and close of the 4th power switch pipe.
Compared with prior art, the present invention has following beneficial effect：
1st, the modularity high voltage induction and capacitor topology circuit that the present invention is provided can be increased by connecting more modules
Electric pressure, has the advantages that expansibility and the low cost of overhaul.
2nd, the present invention is provided modularity high voltage induction and capacitor topology circuit, simple structure, have avoided conventional high-tension electricity
The difficult design of electrification capacitive circuit.
Description of the drawings
Detailed description non-limiting example made with reference to the following drawings by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon：
Fig. 1 is using high-voltage capacitance topological circuit figure during half-bridge module；
Fig. 2 is using high voltage induction topological circuit figure during full-bridge modules；
Fig. 3 is the high pressure DC/DC converter circuit schematic diagrams in embodiment 1；
Fig. 4 is the high pressure DC/DC converter circuit schematic diagrams in embodiment 2；
Fig. 5 is the high pressure DC/DC converter circuit schematic diagrams in embodiment 3.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some changes and improvements can also be made.These belong to the present invention
Protection domain.
The modularity high voltage induction provided according to the present invention and capacitor topology circuit, including：High-voltage capacitance topography module and
High voltage induction topography module, wherein：The high-voltage capacitance topography module includes multiple half-bridge modules being sequentially connected in series；The high pressure
Inductance topography module includes inductance and multiple full-bridge modules being sequentially connected in series.
The half-bridge module includes：Including：Electric capacity, the first power switch pipe, the second power switch pipe, the first diode,
Second diode；The positive pole of electric capacity is connected with the first power switch pipe collector, the first diode cathode；First power switch pipe
Emitter stage, the first diode cathode are connected and constitute half-bridge module with the second power switch pipe collector, the second diode cathode
One end；Second power switch pipe emitter stage, the second diode cathode are connected to the negative pole of electric capacity and constitute half-bridge module
The other end.
The full-bridge modules include：Electric capacity, the first power switch pipe, the second power switch pipe, the 3rd power switch pipe,
Four power switch pipes, the first diode, the second diode, the 3rd diode, the 4th diode；The positive pole of electric capacity connects respectively
The colelctor electrode of one power switch pipe, the colelctor electrode of the 3rd power switch pipe, the negative pole of the first diode, the second diode it is negative
Pole；The emitter stage of the first power switch pipe, the positive pole of the first diode and the second power switch pipe collector, the second diode are born
Extremely it is connected and constitutes one end of the full-bridge modules；The emitter stage of the 3rd power switch pipe, the positive pole and the 4th of the 3rd diode
Power switch pipe collector, the 4th diode cathode are connected and constitute the other end of the full-bridge modules；Second power switch pipe
Emitter stage, the second diode cathode, the 4th power switch pipe emitter stage, the 4th diode cathode be connected to the negative of electric capacity
Pole.
Multiple full-bridge modules being sequentially connected in series constitute a total full bridge structure, one end and the height of total full bridge structure
One end of inductance in voltage inductance topography module is connected, and the other end of total full bridge structure, the other end of inductance respectively constitute high pressure
The two ends of inductance topography module.
The base stage of the first power switch pipe, the base stage of the second power switch pipe, the base stage of the 3rd power switch pipe, the 4th work(
The base stage of rate switching tube is connected with the outfan of PWM output modules, and the PWM output modules are used for the pulse for exporting two groups of level
Ripple, the impulse wave can determine that the first power switch pipe, the second power switch pipe, the 3rd power switch pipe, the 4th power are opened
Close the open and close of pipe.
Modularity high voltage induction and capacitor topology circuit that the present invention is provided, using high-voltage capacitance topology during half-bridge module
Circuit as shown in figure 1, including：The semi-bridge type submodule of multiple series connection, wherein semi-bridge type submodule is by low-voltage capacitance Csm, and up and down
Two power switch pipes：S1And S2Composition.
Using high voltage induction topological circuit during full-bridge modules as shown in Fig. 2 including：The bridge-type submodule of multiple series connection
With a low pressure inductance Ls, wherein full-bridge submodule is by low-voltage capacitance Csm, and four power switch pipes：S1～S4Composition.
More detailed explanation is done with reference to application of the specific embodiment to the present invention.
Embodiment 1
The high pressure in traditional buck converter is replaced using the modularity high voltage induction in the present invention and capacitor topology circuit
Filter inductance, it is topological to be obtained DC/DC as shown in Figure 3, S in Fig. 31And S2For single power switch pipe or many power switch
Pipe is connected.Bridge-type submodule chain output AC square wave causes inductance LsBoth end voltage is zero, therefore filter inductance LsInductance value can
Substantially reduce, while its voltage very little for bearing.
Embodiment 2
The non-isolated based on chain type submodule is replaced using the modularity high voltage induction in the present invention and capacitor topology circuit
High voltage induction and electric capacity in type DC/DC changer, is obtained the topology shown in Fig. 4, L in figurea1And La2For bridge arm inductance.It is high
Semi-bridge type module chain output DC voltage in voltage capacitance topology, the bridge-type module chain output AC electricity in high voltage induction topology
Pressure.
Embodiment 3
The non-isolated based on chain type submodule is replaced using the modularity high voltage induction in the present invention and capacitor topology circuit
High voltage induction in type DC/DC changer, is obtained the topology shown in Fig. 5, L in figurea1And La2For bridge arm inductance.High voltage induction
Bridge-type module chain output AC voltage in topology so that LsInductance value greatly reduce.
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 a variety of changes within the scope of the claims or change, this not shadow
Ring the flesh and blood of the present invention.In the case where not conflicting, the feature in embodiments herein and embodiment can any phase
Mutually combine.
Claims (5)
1. a kind of modularity high voltage induction and capacitor topology circuit, it is characterised in that include：High-voltage capacitance topography module and high pressure
Inductance topography module, wherein：The high-voltage capacitance topography module includes multiple half-bridge modules being sequentially connected in series；The high voltage induction
Topography module includes inductance and multiple full-bridge modules being sequentially connected in series.
2. modularity high voltage induction according to claim 1 and capacitor topology circuit, it is characterised in that the half-bridge module
Including：Including：Electric capacity, the first power switch pipe, the second power switch pipe, the first diode, the second diode；The positive pole of electric capacity
It is connected with the first power switch pipe collector, the first diode cathode；First power switch pipe emitter stage, the first diode cathode
It is connected with the second power switch pipe collector, the second diode cathode and constitutes one end of half-bridge module；Second power switch pipe
Emitter stage, the second diode cathode are connected to the negative pole of electric capacity and constitute the other end of half-bridge module.
3. modularity high voltage induction according to claim 1 and capacitor topology circuit, it is characterised in that the full-bridge modules
Including：Electric capacity, the first power switch pipe, the second power switch pipe, the 3rd power switch pipe, the 4th power switch pipe, the one or two
Pole pipe, the second diode, the 3rd diode, the 4th diode；The positive pole of electric capacity connects the current collection of the first power switch pipe respectively
Pole, the colelctor electrode of the 3rd power switch pipe, the negative pole of the first diode, the negative pole of the second diode；First power switch pipe
Emitter stage, the positive pole of the first diode are connected with the second power switch pipe collector, the second diode cathode and are constituted described complete
One end of bridge module；The emitter stage of the 3rd power switch pipe, the positive pole of the 3rd diode and the 4th power switch pipe collector,
Four diode cathodes are connected and constitute the other end of the full-bridge modules；The emitter stage of the second power switch pipe, the second diode
Positive pole, the 4th power switch pipe emitter stage, the 4th diode cathode are connected to the negative pole of electric capacity.
4. modularity high voltage induction according to claim 1 and capacitor topology circuit, it is characterised in that multiple to be sequentially connected in series
Full-bridge modules constitute the electricity in a total full bridge structure, one end of total full bridge structure and the high voltage induction topography module
One end of sense is connected, and the other end of total full bridge structure, the other end of inductance respectively constitute the two ends of high voltage induction topography module.
5. the modularity high voltage induction and capacitor topology circuit according to Claims 2 or 3, it is characterised in that the first power
The base stage of switching tube, the base stage of the second power switch pipe, the base stage of the 3rd power switch pipe, the base stage of the 4th power switch pipe with
The outfan of PWM output modules is connected, and the PWM output modules are used for the impulse wave for exporting two groups of level, the pulse wave energy
Enough determine the first power switch pipe, the second power switch pipe, the 3rd power switch pipe, the unlatching of the 4th power switch pipe and close
Close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610896204.7A CN106549567A (en) | 2016-10-13 | 2016-10-13 | Modularity high voltage induction and capacitor topology circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610896204.7A CN106549567A (en) | 2016-10-13 | 2016-10-13 | Modularity high voltage induction and capacitor topology circuit |
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| CN106549567A true CN106549567A (en) | 2017-03-29 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201918915U (en) * | 2009-07-02 | 2011-08-03 | Abb研究有限公司 | DC (direct current)-AC (alternating current) convertor |
| CN102594189A (en) * | 2012-03-05 | 2012-07-18 | 南京理工大学 | Non-isolated direct-current converter type differential three-level inverter |
| CN102804571A (en) * | 2009-06-15 | 2012-11-28 | 阿海珐T&D英国有限公司 | Converter |
| CN103066587A (en) * | 2012-12-13 | 2013-04-24 | 国网智能电网研究院 | Optimal configuration method of modular multi-level flexible direct current system |
| CN103326606A (en) * | 2013-06-09 | 2013-09-25 | 浙江大学 | One-phase five-level inverter |
| CN103838966A (en) * | 2014-02-27 | 2014-06-04 | 国家电网公司 | Modeling and simulating method based on half-bridge submodule voltage source converter |
| CN104767169A (en) * | 2015-04-15 | 2015-07-08 | 西南交通大学 | High-voltage direct-current breaker based on Buck-Boost converter topology and fault removal method thereof |
| CN104868727A (en) * | 2015-05-29 | 2015-08-26 | 重庆大学 | Second-order sliding mode control of three-level DC-DC buck converter and finite state machine realization method of control |
| EP2955837A1 (en) * | 2014-06-10 | 2015-12-16 | Alstom Technology Ltd | Semicontuctor switching circuit |
| CN105162351A (en) * | 2015-10-16 | 2015-12-16 | 国网上海市电力公司 | Current limiting bidirectional deflector of DC power distribution network |
-
2016
- 2016-10-13 CN CN201610896204.7A patent/CN106549567A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102804571A (en) * | 2009-06-15 | 2012-11-28 | 阿海珐T&D英国有限公司 | Converter |
| CN201918915U (en) * | 2009-07-02 | 2011-08-03 | Abb研究有限公司 | DC (direct current)-AC (alternating current) convertor |
| CN102594189A (en) * | 2012-03-05 | 2012-07-18 | 南京理工大学 | Non-isolated direct-current converter type differential three-level inverter |
| CN103066587A (en) * | 2012-12-13 | 2013-04-24 | 国网智能电网研究院 | Optimal configuration method of modular multi-level flexible direct current system |
| CN103326606A (en) * | 2013-06-09 | 2013-09-25 | 浙江大学 | One-phase five-level inverter |
| CN103838966A (en) * | 2014-02-27 | 2014-06-04 | 国家电网公司 | Modeling and simulating method based on half-bridge submodule voltage source converter |
| EP2955837A1 (en) * | 2014-06-10 | 2015-12-16 | Alstom Technology Ltd | Semicontuctor switching circuit |
| CN104767169A (en) * | 2015-04-15 | 2015-07-08 | 西南交通大学 | High-voltage direct-current breaker based on Buck-Boost converter topology and fault removal method thereof |
| CN104868727A (en) * | 2015-05-29 | 2015-08-26 | 重庆大学 | Second-order sliding mode control of three-level DC-DC buck converter and finite state machine realization method of control |
| CN105162351A (en) * | 2015-10-16 | 2015-12-16 | 国网上海市电力公司 | Current limiting bidirectional deflector of DC power distribution network |
Non-Patent Citations (3)
| Title |
|---|
| HONGCHENG YOU: "A Family of Un-isolated Modular DC/DC Converters", 《IEEE》 * |
| JIE YANG: "The Hybrid-Cascaded DC–DC Converters Suitable for HVdc Applications", 《IEEE TRANSACTIONS ON POWER ELECTRONICS》 * |
| 阮新波: "输入输出共地的三电平变换器", 《第三届电力电子与运动控制学术年会APSC"2002》 * |
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Application publication date: 20170329 |