CN109286304A - Wind electric converter and its stack-type busbar - Google Patents
Wind electric converter and its stack-type busbar Download PDFInfo
- Publication number
- CN109286304A CN109286304A CN201811216872.6A CN201811216872A CN109286304A CN 109286304 A CN109286304 A CN 109286304A CN 201811216872 A CN201811216872 A CN 201811216872A CN 109286304 A CN109286304 A CN 109286304A
- Authority
- CN
- China
- Prior art keywords
- terminal
- phase
- busbar
- phase terminal
- negative
- 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.)
- Granted
Links
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
- H02M1/00—Details of apparatus for conversion
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The present invention relates to a kind of wind electric converter and its stack-type busbars, stack-type busbar includes busbar ontology, it is disposed with and is respectively used to and each phase of pusher side power module and the pusher side A phase terminal of net side power module being respectively connected on busbar ontology, pusher side B phase terminal, pusher side C phase terminal, net side A phase terminal, net side B phase terminal and net side C phase terminal, the positive terminal that each phase terminal all has the negative terminal connecting with negative DC master row and connect with positive direct-current busbar, pusher side A phase terminal, pusher side C phase terminal, the positive terminal and negative terminal of net side A phase terminal and net side C phase terminal are arranged along the width direction of stack-type busbar by positive and negative sequence interval, pusher side B phase terminal and net side B phase terminal are reversely arranged.Be arranged in when the change of current it is positive and negative staggeredly, increase coincident-current area, reduce parasitic inductance.
Description
Technical field
The present invention relates to a kind of wind electric converter and its stack-type busbars.
Background technique
Wind energy is the important component of renewable energy, energetically develops wind energy for improving energy resource system structure, ring
Festival energy crisis is preserved the ecological environment with far reaching significance.
As wind electric converter inland matters installation position is fewer and fewer and gradually develops to offshore wind farm, wind electric converter
Just gradually to high power development.Traditional three-phase voltage type cross-straight-intersection bidirectional converter mainly includes pusher side power cell, net
Side power cell and the stack-type busbar for connecting pusher side power cell and net side power cell, wherein pusher side power cell includes machine
Side A phase, pusher side B phase and pusher side C phase, net side power cell include that net side A phase, net side B phase and net side C phase, stack-type busbar include
The mutually folded positive direct-current busbar and negative DC master row set, while above-mentioned pusher side A phase, pusher side B phase and pusher side C phase and net side A
Phase, net side B phase and net side C phase are connect with stack-type busbar, meanwhile, it is respectively equipped on the corresponding DC master row of stack bus bar
With the positive terminal and negative terminal of the connection of corresponding power cell.And the row of positive terminal in the prior art and negative terminal
Mode for cloth is arranged for pusher side A phase, pusher side B phase and pusher side C phase are respectively mounted positive and negative intervening sequences, and the row between adjacent two-phase
Cloth is consistent, and stack-type busbar generates parasitic inductance when will lead to the common DC bus change of current in this way, and then leads to common DC bus
DC ripple resonance phenomena, and using have this stack-type busbar wind electric converter when, due to topology asymmetry,
The reasons such as parasitic inductance, will lead in the process of running in bus Support Capacitor capacitance, the inconsistency of ESR and commutation course
Bus capacitor temperature rise is inconsistent, and then reduces the service life of current transformer, will lead to the temperature of dc-link capacitance under serious conditions
Degree reaches 90 DEG C or more, more than the temperature allowed range of capacitor, leads to bus capacitor cause thermal damage.
Summary of the invention
The purpose of the present invention is to provide a kind of stack-type busbars, to solve each phase on stack-type busbar in the prior art just
The arrangement mode of extreme son and negative terminal causes to lead to the problem of parasitic inductance；The object of the invention is also to provide a kind of tools
There is the wind electric converter of the stack-type busbar, to solve each phase positive terminal on the stack-type busbar of wind electric converter in the prior art
Cause to lead to the problem of parasitic inductance with the arrangement mode of negative terminal.
To achieve the above object, the technical solution of stack-type busbar of the present invention is:
Stack-type busbar includes busbar ontology, and busbar ontology includes folding the positive direct-current busbar and negative DC master row set up and down, female
It is disposed with and is respectively used to and each phase of pusher side power module and the connecting pin of net side power module being respectively connected on row's ontology
Subgroup, connecting pin subgroup include sequentially being arranged in pusher side A phase terminal, pusher side on stack bus bar along the length direction of stack-type busbar
B phase terminal, pusher side C phase terminal, net side A phase terminal, net side B phase terminal and net side C phase terminal, each phase terminal all have and bear directly
The negative terminal of stream busbar connection and the positive terminal connecting with positive direct-current busbar, the pusher side A phase terminal, pusher side C phase are held
The positive terminal and negative terminal of son, net side A phase terminal and net side C phase terminal are along the width direction of stack-type busbar by positive and negative suitable
Sequence is intervally arranged, and pusher side B phase terminal and net side B phase terminal are arranged along the same width direction of stack-type busbar by negative and positive sequence interval
Cloth.
Beneficial effect is: compared with the prior art, stack-type busbar according to the present invention, by each phase terminal according to net side
The sequentially arrangement of A phase terminal, net side B phase terminal, net side C phase terminal, pusher side A phase terminal, pusher side B phase terminal, pusher side C phase terminal
The length direction of mode stack-type busbar is arranged on busbar ontology, can guarantee each alternate change of current path of power wooden unit in this way
Unanimously, meanwhile, by the positive terminal of the positive terminal and negative terminal and other each phases of net side B phase terminal and pusher side B phase terminal
Arrangement with negative terminal sequentially reversed arrangement, staggeredly can extend change of current path for power module is positive and negative in the change of current in this way,
Increase coincident-current area, and then reduce parasitic inductance, also avoid the inconsistent problem of bus capacitor temperature rise, avoids bus electric
Hold cause thermal damage.
Further, in order in the machine net side power cell change of current reduce due to path and inductance it is inconsistent caused by
Concussion, plays the role of energy snubber, and mother is equipped between the connecting pin subgroup of busbar ontology net side and the connecting pin subgroup of pusher side
Line capacitance terminal group, bus capacitor terminal group are connected with corresponding positive direct-current busbar and negative DC master row.
The technical solution of wind electric converter of the present invention is:
Wind electric converter includes cabinet body, and pusher side power module, net side power module and connection pusher side power are equipped in cabinet body
The stack-type busbar of module and net side power module, pusher side power module include pusher side A phase, pusher side B phase and pusher side C phase, net side function
Rate module includes net side A phase, net side B phase and net side C phase, and stack-type busbar includes busbar ontology, and busbar ontology includes folded up and down sets
Positive direct-current busbar and negative DC master row, be disposed on busbar ontology respectively with pusher side power module it is each mutually and net side power
The connecting pin subgroup of module being respectively connected, connecting pin subgroup include along stack-type busbar length direction be sequentially arranged in lamination mother
Pusher side A phase terminal, pusher side B phase terminal, pusher side C phase terminal, net side A phase terminal, net side B phase terminal on row are held with net side C phase
Son, the positive terminal that each phase terminal all has the negative terminal connecting with negative DC master row and connect with positive direct-current busbar, institute
The positive terminal and negative terminal of pusher side A phase terminal, pusher side C phase terminal, net side A phase terminal and net side C phase terminal are stated along folded
The width direction of type busbar is arranged by positive and negative sequence interval, and pusher side B phase terminal and net side B phase terminal are along the same of stack-type busbar
Width direction is arranged by negative and positive sequence interval.
Beneficial effect is: compared with the prior art, wind electric converter according to the present invention, by by each of stack-type busbar
Phase terminal is according to net side A phase terminal, net side B phase terminal, net side C phase terminal, pusher side A phase terminal, pusher side B phase terminal, pusher side C phase
The length direction of the sequentially arrangement mode stack-type busbar of terminal is arranged on busbar ontology, can guarantee each of power wooden unit in this way
Alternate change of current path it is consistent, meanwhile, by the positive terminal and negative terminal of net side B phase terminal and pusher side B phase terminal and other
The arrangement of the positive terminal and negative terminal of each phase sequentially reversed arrangement, can be power module positive and negative friendship in the change of current in this way
Mistake extends change of current path, increases coincident-current area, and then reduce parasitic inductance, it is inconsistent to also avoid bus capacitor temperature rise
The problem of, bus capacitor cause thermal damage is avoided, guarantees the normal operation of wind electric converter.
Further, in order in the machine net side power cell change of current reduce due to path and inductance it is inconsistent caused by
Concussion, plays the role of energy snubber, and mother is equipped between the connecting pin subgroup of busbar ontology net side and the connecting pin subgroup of pusher side
Line capacitance group, the positive and negative anodes of bus capacitor group are connected on corresponding positive direct-current busbar and negative DC master row.
Further, in order to avoid because over-voltage breakdown bus capacitor, bus occur in common-mode voltage and the positive and negative interpolar of capacitor
Capacitance group handstand is installed on busbar ontology, and one end backwards to busbar ontology of bus capacitor group is fixedly connected with for by bus
The insulation board to insulate between capacitance group and cabinet body.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the specific embodiment of stack-type busbar of the invention；
Fig. 2 is the positive sequence arrangement power module that be adapted to stack-type busbar in the specific embodiment of stack-type busbar of the invention
Structural schematic diagram；
Fig. 3 is the negative phase-sequence arrangement power module that be adapted to stack-type busbar in the specific embodiment of stack-type busbar of the invention
Structural schematic diagram；
Fig. 4 is the mounting structure schematic diagram of the specific embodiment median generatrix capacitance group of stack-type busbar of the invention.
Description of symbols: 1- busbar ontology；11- net side A phase terminal；12- net side B phase terminal；13- net side C phase terminal；
14- pusher side A phase terminal；15- pusher side B phase terminal；16- pusher side C phase terminal；17- bus capacitor terminal group；2- positive sequence arrangement power
Module；21- anode and cathode terminals；3- inverted sequence arrangement power module；31- anode and cathode terminals；4- bus capacitor group；5- insulation board.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment of stack-type busbar of the invention, as shown in Figure 1, in the present embodiment, stack-type busbar is right and left
To the rectangle structure of extension, stack-type busbar includes busbar ontology 1, busbar ontology 1 include up and down the folded positive direct-current busbar set and
Negative DC master row is provided with respectively phase and each phase of net side power module respectively with pusher side power module on busbar ontology 1
The connecting pin subgroup of connection, wherein pusher side power module includes pusher side A phase, pusher side B phase and pusher side C phase, net side power module packet
Net side A phase, net side B phase and net side C phase are included, and connecting pin subgroup includes for being mutually separately connected with each of pusher side power module
Pusher side A phase terminal 14, pusher side B phase terminal 15 and pusher side C phase terminal 16 further include for each mutually difference with net side power module
Net side A phase terminal 11, net side B phase terminal 12 and the net side C phase terminal 13 of connection.In the present embodiment, each phase terminal all has
The negative terminal being connect with negative DC master row and the positive terminal for being connect with positive direct-current busbar.
In the present embodiment, above-mentioned net side A phase terminal 11, net side B phase terminal 12, net side C phase terminal 13, pusher side A phase
Terminal 14, pusher side B phase terminal 15 and pusher side C phase terminal 16 are sequentially arranged in busbar ontology 1 along the length direction of stack-type busbar
On row face, such arrangement form can guarantee that each alternate change of current path of power module is consistent in the change of current.
Net side A phase terminal 11, net side C phase terminal 13, pusher side A phase terminal 14 and pusher side C phase terminal 16 above-mentioned simultaneously is equal
Width direction along stack-type busbar is arranged according to positive and negative sequence interval, that is, each phase positive terminal and negative terminal along stack-type
The width direction distributing order of busbar is positive terminal, negative terminal, positive terminal, negative terminal, corresponding each power module
21 arrangement mode of anode and cathode terminals be positive, be negative, positive, is negative and form positive sequence arrangement power module 2, structure is as shown in Figure 2.On and
Net side B phase terminal 12, the pusher side B phase terminal 15 stated are arranged according to negative and positive sequence interval along the width direction of stack-type busbar,
Be exactly each phase positive terminal and negative terminal along the width direction of stack-type busbar distributing order be negative terminal, positive terminal
Son, negative terminal, positive terminal, 31 arrangement mode of anode and cathode terminals of corresponding each power module is negative, is positive and negative, just shape
At inverted sequence arrangement power module 3, structure is as shown in Figure 3.The stack-type busbar outlet method of this net side B phase and pusher side B phase and its
The inconsistent form of the arrangement mode of his each phase can make power module is positive and negative in the change of current staggeredly to increase coincident-current area,
Extend change of current path, reduces parasitic inductance.
Above-mentioned busbar ontology 1 is stacked design using positive and negative, carries out intermediate insulation using insulating paper, and require nothing more than voltage
It can reduce the spacing between positive direct-current busbar and negative DC master row without partial discharge requirement for DC5000V, effectively reduce
The parasitic inductance of stack-type busbar itself.
Simultaneously as shown in Figure 1 and Figure 4, between the connecting pin subgroup of 1 net side of busbar ontology and the connecting pin subgroup of pusher side
It is additionally provided with bus capacitor terminal group 17, bus capacitor terminal group 17 is equipped with bus capacitor group 4, and the design of bus capacitor group 4 is
To be reduced when pusher side power module and the net side power module change of current due to path and the inconsistent caused concussion of inductance, energy is played
The effect of buffering.Certainly, in other embodiments, bus capacitor group also can be set on busbar ontology and be located at each connection
The position on the outside of the width direction of busbar ontology of terminal group.
In the present embodiment, bus capacitor group 4 is installed in parallel using the capacitor of 15 350 μ F, which is filled using resin
Note, the bottom of each capacitor are equipped with installation stud, and capacitor is fixed on insulation board 5 using installation of standing upside down, capacitor bolt when installation,
Guarantee the insulation between each capacitor and cabinet body by insulation board 5, avoids because common-mode voltage and the positive and negative interpolar of capacitor occurred
Pressure breakdown bus capacitor.The insulation board 5 of installation bus capacitor is fixed on screen body, and the positive and negative anodes connection stack-type of bus capacitor is female
Row.Certainly, in other embodiments, bus capacitor can also be directly fixedly mounted on busbar ontology.
The embodiment of wind electric converter according to the present invention, including cabinet body, cabinet body is interior to be equipped with pusher side power module, net side
Power module and the stack-type busbar for connecting pusher side power module and net side power module, the structure of stack-type busbar and above-mentioned stack-type
Structure in the embodiment of busbar is consistent, is no longer developed in details.
Claims (5)
1. stack-type busbar, including busbar ontology, busbar ontology includes folding the positive direct-current busbar and negative DC master row set, busbar up and down
It is disposed with and is respectively used to and each phase of pusher side power module and the connection terminal of net side power module being respectively connected on ontology
Group, connecting pin subgroup include sequentially being arranged in pusher side A phase terminal, pusher side B on stack bus bar along the length direction of stack-type busbar
Phase terminal, pusher side C phase terminal, net side A phase terminal, net side B phase terminal and net side C phase terminal, each phase terminal all have and bear directly
The negative terminal of stream busbar connection and the positive terminal being connect with positive direct-current busbar, it is characterised in that: the pusher side A phase is held
The positive terminal and negative terminal of son, pusher side C phase terminal, net side A phase terminal and net side C phase terminal are along the width of stack-type busbar
Direction is arranged by positive and negative sequence interval, and pusher side B phase terminal and net side B phase terminal are along the same width direction of stack-type busbar by negative
Positive sequence interval arrangement.
2. stack-type busbar according to claim 1, it is characterised in that: the connecting pin subgroup of busbar ontology net side and pusher side
Bus capacitor terminal group, bus capacitor terminal group and corresponding positive direct-current busbar and negative DC master row are equipped between the subgroup of connecting pin
Connection.
3. wind electric converter, including cabinet body, cabinet body is interior to be equipped with pusher side power module, net side power module and connection pusher side power mould
The stack-type busbar of block and net side power module, pusher side power module include pusher side A phase, pusher side B phase and pusher side C phase, net side power
Module includes net side A phase, net side B phase and net side C phase, and stack-type busbar includes busbar ontology, and busbar ontology includes folded up and down sets
Positive direct-current busbar and negative DC master row, be disposed on busbar ontology respectively with pusher side power module it is each mutually and net side power mould
The connecting pin subgroup of block being respectively connected, connecting pin subgroup include sequentially being arranged in stack bus bar along the length direction of stack-type busbar
On pusher side A phase terminal, pusher side B phase terminal, pusher side C phase terminal, net side A phase terminal, net side B phase terminal and net side C phase terminal,
The positive terminal that each phase terminal all has the negative terminal connecting with negative DC master row and connect with positive direct-current busbar, feature
Be: the pusher side A phase terminal, pusher side C phase terminal, net side A phase terminal and net side C phase terminal positive terminal and negative terminal
It arranges along the width direction of stack-type busbar by positive and negative sequence interval, pusher side B phase terminal and net side B phase terminal are along stack-type busbar
Same width direction by negative and positive sequence interval arrange.
4. wind electric converter according to claim 3, it is characterised in that: the connecting pin subgroup and machine of net side on busbar ontology
Bus capacitor group is equipped between the connecting pin subgroup of side, the positive and negative anodes of bus capacitor group are connected to corresponding positive direct-current busbar
On negative DC master row.
5. wind electric converter according to claim 4, it is characterised in that: the handstand of bus capacitor group is installed on busbar ontology
On, one end backwards to busbar ontology of bus capacitor group is fixedly connected with for exhausted by what is insulated between bus capacitor group and cabinet body
Listrium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811216872.6A CN109286304B (en) | 2018-10-18 | 2018-10-18 | Wind power converter and laminated busbar thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811216872.6A CN109286304B (en) | 2018-10-18 | 2018-10-18 | Wind power converter and laminated busbar thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109286304A true CN109286304A (en) | 2019-01-29 |
| CN109286304B CN109286304B (en) | 2020-07-21 |
Family
ID=65176730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811216872.6A Active CN109286304B (en) | 2018-10-18 | 2018-10-18 | Wind power converter and laminated busbar thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109286304B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204993038U (en) * | 2015-10-15 | 2016-01-20 | 阳光电源股份有限公司 | Converter and wind generator system |
| CN106130316A (en) * | 2016-05-20 | 2016-11-16 | 珠海九源电力电子科技有限公司 | A kind of current transformer module based on perpendicular dress stack bus bar |
-
2018
- 2018-10-18 CN CN201811216872.6A patent/CN109286304B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204993038U (en) * | 2015-10-15 | 2016-01-20 | 阳光电源股份有限公司 | Converter and wind generator system |
| CN106130316A (en) * | 2016-05-20 | 2016-11-16 | 珠海九源电力电子科技有限公司 | A kind of current transformer module based on perpendicular dress stack bus bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109286304B (en) | 2020-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204578106U (en) | A kind of offshore wind farm modular multi-level flexible direct-current transmission system | |
| CN102016301A (en) | Wind farm comprising a plurality of wind power plants | |
| CN101826837A (en) | Variable frequency control power module of wind power generator | |
| CN203504422U (en) | Laminated busbar for T-type three-level current transformer | |
| CN204668938U (en) | Mixed DC fault treating apparatus, Hybrid HVDC system | |
| CN202634261U (en) | Low stray inductance structure in electronic equipment | |
| CN101425742B (en) | DC bus bar connection construction for large power three-phase inverter | |
| CN201388156Y (en) | Novel precharge circuit for cascade high-voltage frequency converter | |
| Ma et al. | An assembly high voltage DC circuit breaker based on pre-charged capacitors | |
| CN109286304A (en) | Wind electric converter and its stack-type busbar | |
| CN105207495A (en) | Single-phase four-quadrant power unit for cascade connection with in-phase power supply system | |
| CN202872621U (en) | Connection structure for electrolytic capacitor and insulated gate bipolar transistor (IGBT) of frequency converter | |
| CN106130316B (en) | A kind of current transformer module based on perpendicular dress stack bus bar | |
| CN104767400A (en) | L-shaped split type composite busbar | |
| CN202178139U (en) | Two-split rectifier transformer | |
| CN104539160A (en) | Ultralow-output-voltage-ripple diode-clamped seven-level direct-current converter and direct-current power supply | |
| CN102044974A (en) | Main circuit topological structure of energy feedback device | |
| CN203219128U (en) | 3300V mining, flame-proof and intrinsic-safety-type frequency-conversion speed-regulation all-in-one machine | |
| CN201593069U (en) | Aluminium electrolytic segmental bridge-type rectifying machine set | |
| CN205105115U (en) | Many level of modularization transverter and transverter module | |
| CN204030989U (en) | A kind of novel rectifying device cabinet | |
| Kamizuma et al. | Low phase-to-phase-impedance busbar for modular power converter system | |
| CN210927462U (en) | IGCT-based parallel multiplexing and cascading back-to-back converter | |
| CN202949235U (en) | Three-level voltage source converter-based HVDC-UPFC system | |
| CN202178138U (en) | Three-split rectifier transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221018 Address after: No. 4138, Sunshine Avenue, Xuchang Economic Development Zone, Henan 461000 Patentee after: Henan Xuji Power Electronics Co.,Ltd. Patentee after: XJ Group Corp. Patentee after: XJ ELECTRIC Co.,Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: XJ Group Corp. Patentee before: XJ ELECTRIC Co.,Ltd. |