CN201742105U - Modular frequency converter system for wind turbine and converter cabinet thereof - Google Patents
Modular frequency converter system for wind turbine and converter cabinet thereof Download PDFInfo
- Publication number
- CN201742105U CN201742105U CN2009201621174U CN200920162117U CN201742105U CN 201742105 U CN201742105 U CN 201742105U CN 2009201621174 U CN2009201621174 U CN 2009201621174U CN 200920162117 U CN200920162117 U CN 200920162117U CN 201742105 U CN201742105 U CN 201742105U
- Authority
- CN
- China
- Prior art keywords
- frequency converter
- cabinet
- converter system
- wind turbine
- transducer
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
The utility model relates to a converter of a wind turbine, in particular to a converter cabinet (16a) of a modular frequency converter system (10) for the wind turbine, comprising a frame (32) at least having a first socket (34a) and a second socket (34b), wherein each socket is suitable for receiving one of a phase module (36) used for converting one of DC and AC into the other type of current and a braking chopper module (38) used for electrically braking the wind turbine.
Description
Technical field
The utility model relates to the power electronic equipment field that is used for wind turbine.Particularly, the utility model relates to a kind of transducer cabinet that is used for wind turbine frequency converter system, is used for the modularization frequency converter system of wind turbine, and wind turbine.
Background technology
Wind turbine with vertical rotor has generator, and it is housed in the cabin that can rotate with respect to the pylon of wind turbine.Usually, because high voltage and high electric current, the most of power electronic equipment that is used for generator all is arranged on contiguous generator in the cabin.
Yet under the member situation that for example power semiconductor breaks down of power electronic equipment, the member that replace to damage usually may be very complicated, and this is because power electronic equipment is difficult to touch because of it is arranged in the cabin at wind turbine top.
For example, the most conventional wind turbine is based on the low pressure double fed induction generators.The required transducer of this type systematic is less relatively, but next-door neighbour's generator settles, and promptly is in the cabin.Because the size of wind turbine constantly increases, so principle may arrive its limit, because all members also have the size of transducer all increasing.Cabin weight increases to high-value, may cause the increase of maintenance cost.
The utility model content
The purpose of this utility model is to provide easy maintenance to be used for the power electronic equipment of wind turbine.
According to embodiment of the present utility model, a kind of transducer cabinet that is used for wind turbine frequency converter system comprises: the framework that has first socket (receptacle) and second socket at least, wherein, each socket all be suitable for receiving be used for a kind of DC of converting to the electric current and alternative first phase module in the AC electric current of DC electric current and AC electric current and chopper (chopper) module of be used under the situation of for example grid loss, the dissipating unnecessary electric energy that comes from wind turbine or electric power one.
The transducer cabinet comprises the power electronics member that is used for frequency converter such as the slot of phase module or chopper module.Accommodate the module of power electronics member and can insert in slot or the socket, and if one of them module break down, then can be simply by from slot, taking out the module of destroying and inserting the module that the module that can work is replaced destruction.
This may be particularly useful in the situation of middle pressure permanent magnet generator.This principle allow required full-scale in pressure converter in fact can be placed on any position in the turbine.
First phase module can be suitable for the DC current conversion is become the AC electric current, and/or the AC current conversion is become the DC electric current.
Because the socket of transducer cabinet is suitable for receiving disparate modules, so formed the external member of forming that can be provided with or be assembled into dissimilar transducer cabinets by it.
According to embodiment of the present utility model, the transducer cabinet comprises first phase module at least two sockets that are connected to framework one.
According to embodiment of the present utility model, the transducer cabinet comprises the chopper module at least two sockets that are connected to framework one.
According to embodiment of the present utility model, the transducer cabinet comprises first phase module and second phase module at least, and wherein, first phase module is connected on first socket of framework, and wherein, second phase module is connected on second socket of framework.
According to embodiment of the present utility model, phase module (that is, first phase module and/or second phase module) comprises and is applicable to the semiconductor circuit of restriction by the voltage peak that phase module produced.
According to embodiment of the present utility model, the transducer cabinet comprises the shell that holds framework, and wherein, the transducer cabinet comprises the cabinet door, and wherein, shell and cabinet door fully impale the member of transducer cabinet.Utilize these measures, the member of protection transducer cabinet is avoided the adverse circumstances of wind turbine.For example, wind turbine can be the wind turbine of offshore.Because the cabinet door is arranged, thus simply by opening the cabinet door, just can be easily near the member in the transducer cabinet, for example phase module or chopper module are so that keep in repair.
The utility model also relates to a kind of modularization frequency converter system that is used for wind turbine.According to embodiment of the present utility model, modularization frequency converter system comprises: frequency converter, it is suitable for the power conversions that generator produced has a first frequency by wind turbine is become can be fed to the electric power with second frequency on the power network and at least one transducer cabinet.
Modularization frequency converter system can comprise the transducer cabinet of equal manufacturing, and it is equipped with dissimilar modules.For example, the frequency converter that is used for three-phase current can comprise six phase module and a chopper module.
Modularization frequency converter system can comprise modularizing member, perhaps can assemble by changing easy module.Cupboard can be the module of modularization frequency converter system.
According to embodiment of the present utility model, modularization frequency converter system also comprises control cubicle, and wherein, the frequency converter system has a plurality of members, and wherein, control cubicle is applicable to the member of control frequency transducer.In control cubicle or control compartment, some control parts of frequency converter system can be included in the close-coupled compartment.
According to embodiment of the present utility model, control cubicle links to each other by fibre circuit with the frequency converter member.The advantage that is had is like this, the interference of the electromagnetic field that the control signal that sends by fibre circuit is not subjected in the frequency converter to be produced.
According to embodiment of the present utility model, modularization frequency converter system comprises the filter cabinet, it can be accommodated the electric current that is used for the AC current conversion is become to be roughly sine and come feed to give the line filter unit of transformer, and in addition or as alternative, the filter cabinet can be accommodated the machine side or the generator side filter unit of the voltage slope (dv/dt) of the generator that is used to limit wind turbine.
According to embodiment of the present utility model, modularization frequency converter system comprises cooling cabinet, and it accommodates the member that is used to cool off the frequency converter system.
According to embodiment of the present utility model, modularization frequency converter system comprises terminal cabinet, and it is accommodated and is used for the frequency converter system is connected to member on the transformer.
According to embodiment of the present utility model, modularization frequency converter system comprises at least one energy cabinet of releasing, and its collecting company receives the energy bleeder resistance on the chopper module.
According to embodiment of the present utility model, at least two cupboards wherein have the shell that shape roughly is equal to.Also might have roughly the same cross section by cupboard, but the width difference.Utilize these measures, cupboard can be positioned to a row adjacent to each other.
According to embodiment of the present utility model, the cupboard of frequency converter system shapes and is connected with each other, and makes cupboard can be arranged in the pylon of the wind turbine with the circular cross-section of being roughly.
The utility model also relates to a kind of wind turbine.According to embodiment of the present utility model, wind turbine comprises the cabin on pylon, the tower top, wherein, the cabin is accommodated and is mechanically connected to epitrochanterian generator, and modularization frequency converter system, wherein, modularization frequency converter system is arranged in the pylon.
Modularization frequency converter system in the pylon is than the easier maintenance of frequency converter system in the cabin or non-modularization frequency converter system.For example, the maintenance technician can just can touch the member of frequency converter system only with the door of opening in the tower wall.In addition, the technician can come the repair rate converter system by the module of changing modularization frequency converter system.
According to embodiment of the present utility model, wind turbine also comprises the platform in the pylon, and wherein, modularization frequency converter system is placed on this platform.
Described vide infra embodiment, it is clear and clear and definite that these and other aspect of the present utility model will become.
Description of drawings
Hereinafter embodiment of the present utility model is described in more detail with reference to accompanying drawing.
Fig. 1 shows the 3-D view of accommodating according to the wind turbine tower portion of the frequency converter system of the utility model embodiment.
Fig. 2 is according to the front view of the transducer cabinet of the utility model embodiment among Fig. 1.
Fig. 3 is the vertical view of the transducer cabinet among Fig. 2.
Fig. 4 is the 3-D view according to another embodiment of the frequency converter system of the utility model embodiment.
Fig. 5 is the front view of the frequency converter system among Fig. 4.
Fig. 6 is the vertical view of the frequency converter system among Fig. 4 and Fig. 5.
Fig. 7 is the schematic sectional view according to the wind turbine of the utility model embodiment.
Parts List
10 frequency converter systems
12 pylons
14 ADs
16a transducer cabinet
16b transducer cabinet
16c transducer cabinet
16d transducer cabinet
18 control compartments
20 filter cabinets
22 cooling cabinets
24 terminal cabinets
26 cabinet doors
28 platforms
30 shells
32 frameworks
34a first socket
34b second socket
36 phase module
36a first phase module
36b second phase module
38 chopper modules
40 DC UPSs (DC UPS) circuit
42 power supplys
The 44 energy cabinet of releasing
46 complete DC circuits
10 ' frequency converter system
16 ' transducer cabinet
18 ' control compartment
20 ' filter compartment
22 ' cooling compartment
26 ' cabinet door
30 ' shell
30a ' upper mounting plate
30b ' lower installation board
32 ' framework
34 ' socket
36 ' phase module
38 ' energy cabinet of releasing
60 wind turbines
62 bases
64 cabins
66 generators
68 rotors
70 distributions
72 distributions
74 transformers
Embodiment
Fig. 1 shows the 3-D view that is housed in the frequency converter system 10 in pylon 12 sections.The sidewall of pylon 12 has AD 14, passes the member that AD 14 can touch frequency converter system 10.
All four transducer cabinet 16a-16d are equal shape, and are positioned to a row abreast.Control compartment 18 is placed in the side of transducer cabinet 16a, makes this row continue.The cross section or the shape of control compartment 18 rear walls have and the identical rectangular shape of transducer cabinet 16a sidewall.
Equally, filter cabinet 20, cooling cabinet 22 and terminal cabinet 24 are positioned to a row, and have identical cross sectional shape all on respect to alignment direction.
All members of frequency converter system, promptly transducer cabinet 16a-16d, control compartment 18, filter cabinet 20, cooling cabinet 22, terminal cabinet 24 all are placed on the platform 28 of pylon 12.Cupboard 16a-16d, 18,20,22,24 all are designed to be placed in the pylon of larger wind turbines such as 5MW offshore turbine.
Fig. 2 show four transducer cabinet 16a-16d among Fig. 1 in Fig. 1 shown in front view on the direction D.
Each transducer cabinet 16a-16d includes shell 30, has two socket 34a, and the framework 32 of 34b is installed in the shell 30.For clarity, only the socket of transducer cabinet 16a is associated with reference number.
The first phase module 36a inserts in first socket of the first transducer cabinet 16a.The second phase module 36b inserts in second socket of transducer cabinet 16a.
Another phase module 36 is inserted among the first socket 34a of the second transducer cabinet 16b.The second socket 34b of the second transducer cabinet 16b can be empty.
The first phase module 36a inserts in first socket of the 4th transducer cabinet 16d.The second phase module 36b inserts in second socket of the 4th transducer cabinet 16d.
Each transducer cabinet 16a-16d all has DC ups system 40 and power supply 42, to be used to comprise the IGCT gate-drive device of battery buffer.
Fig. 3 shows four transducer cabinet 16a-16d that are positioned to a row from the top.The energy bleeder resistance that is used for chopper module 38 is arranged on two energy on transducer cabinet 16b and 16c rear side cabinet 44 of releasing.Each transducer cabinet 16a-16d all has complete DC circuit 46.
Among Fig. 3 and the distance shown in other accompanying drawing for being the distance of unit with mm.But also can use other distance/size, this depends on the pylon size and/or the maximum power of wind turbine.
Fig. 4 show frequency converter system 10 ' another embodiment.Frequency converter system 10 ' comprise transducer cabinet 16 ', control compartment 18 ', filter compartment or cupboard 20 ', and cooling compartment or cupboard 22 '.Each cupboard or compartment 16 ', 18 ', 20 ', 22 ' all have cabinet door 26 '.Frequency converter system 10 ' shell 30 ' comprise common upper mounting plate 30a ' and common lower installation board 30b ', utilize its frequency converter system 10 can be connected on the platform of wind turbine tower.
Frequency converter system 10 ' can be " the PCS 1000Wind " that in the MW class wind turbine, use that makes by ABB Switzerland Ltd.Frequency converter system 10 can comprise total power transducer f back-to-back
Var/ 50Hz or 60Hz, it can be semi-conductive middle three level translators of pressing based on the IGCT of NPC technology and reverse conduction.Frequency converter system 10 ' can be based on no fuse technique.Frequency converter system 10 ' member and communicating by letter of subsystem can conduct by fibre circuit.Frequency converter system 10 ' can comprise chopper, grid side filter, machine side dv/dt filter, have or do not have the pure water cooling circuit of redundant pump and precharge unit with soft synchronizing function based on IGCT semiconductor and bleeder resistance.
Frequency converter system 10 ' be designed to be placed in the pylon of larger wind turbines such as 3MW turbine.
Control compartment 18 ' can comprise master controller, power supply, relay, terminal board, interface component, fibre circuit, status lamp and emergency stop device.
Filter compartment 20 ' can comprise line filter member and dv/dt filter member.
Cooling compartment 22 ' can comprise cooling circuit, it comprises redundant pump or nonredundancy pump, deionization box, metering device, expansion tank, pipeline engineering again, and local cooling controller.
Transducer cabinet 16 ' two cabinet doors 26 ' open, and people can see framework 32 ', its can by linkage haul out transducer cabinet 16 ' inside.Six sockets 34 of framework 32 ' have ', each socket 34 of phase module 36 ' insertion ' in.Framework 32 ' socket 34 ' in the vertical row of phase module 36 ' be positioned to.
The phase module 36 of transducer cabinet 16 ' can comprise NPC technology '.Frequency converter system 10 ' in, two three phase converer be combined in single framework 32 ' on.Transducer cabinet 10 ' also can comprise complete DC circuit, energy bleeder resistance, be used to comprise the IGCT gate-drive device of battery buffer power supply, transformer anti-saturation equipment, comprise electric current and voltage measuring apparatus, cooling water distributed pipeline and the pipeline of measuring interface, the pressure air cooling that is used for non-water-cooled member, anti-condensation heating system, sensor groups, and door-locking system.
Fig. 5 show frequency converter system 10 among Fig. 4 ' front view.
Fig. 6 show from the top frequency converter system 10 '.Control compartment 18 ', energy release cabinet 38 ', transducer cabinet 16 ' and cooling cabinet 22 ' a be positioned to row.The cabinet door 26 of all these cupboards ' all be suitable for opening towards the place ahead.This row's cupboard 18,38,16,22 ' rear side, filter compartment 20 ' be arranged to filter compartment 20 ' two cabinet doors 26 ' on the direction that is parallel to other compartment alignment, open.
Fig. 7 show have base 62, the wind turbine in pylon 12 and cabin 64.Cabin 64 is installed on the top of pylon 12, and is rotatably connected on the pylon.Cabin 64 holds the generator 66 that is mechanically connected on the rotor 68.A kind of frequency converter system 10 in the said frequencies converter system of can be is placed on the platform 28 in the pylon 12.By distribution or lead 70 and 72, the frequency converter system is connected on the generator 66 on the one hand, and is connected on the other hand on the transformer 74.Transformer 74 is connected on electrical network or the power network.
Although detailed icon and described the utility model in accompanying drawing and the above stated specification thinks that these diagrams and explanation are exemplary or exemplary, and and nonrestrictive; The utility model is not limited to disclosed embodiment.Those skilled in the art can be by the research accompanying drawing, disclosure and appended claims are understood and realizes other modification of disclosed embodiment, and implements the utility model that requirement is protected.In the claims, term " comprises " does not get rid of other element or step, and term " " or " one " do not get rid of a plurality of.The function of a plurality of parts described in the claim can be realized in single processor or controller or other unit.The pure fact of setting forth some measure in the mutually different dependent claims does not point out that the combination of these measures can not more advantageously adopt.It is restriction to scope that any reference number in the claim should not regarded as.
Claims (14)
1. transducer cabinet (16) that is used for the frequency converter system (10) of wind turbine (60), described transducer cabinet comprises:
At least the framework (32) that has first socket (34a) and second socket (34b),
Wherein, each described socket all can be connected to be used for converting DC electric current and AC electric current a kind of in described DC electric current and the described AC electric current alternative first phase module (36) and the chopper module (38) of the electric power that comes from wind turbine (60) of being used for dissipating one.
2. transducer cabinet according to claim 1 (16) is characterized in that, described transducer cabinet (16) comprising:
Described first phase module (36), it is connected on the socket in two sockets of described framework at least.
3. transducer cabinet according to claim 1 (16) is characterized in that, described transducer cabinet (16) comprising:
Described chopper module (38), it is connected on the socket in two sockets of described framework at least.
4. transducer cabinet according to claim 2 (16) is characterized in that, described transducer cabinet (16) comprising:
At least the second phase module,
Wherein, described first phase module is connected on first socket of described framework,
Wherein, described second phase module is connected on second socket of described framework.
5. transducer cabinet according to claim 2 (16) is characterized in that,
Described first phase module (36) comprises the semiconductor circuit of the voltage peak that is applicable to that restriction is produced by described phase module.
6. according to one in the aforementioned claim described transducer cabinet (16), it is characterized in that described transducer cabinet (16) also comprises:
The shell that holds described framework (30),
Door (26),
Wherein, described shell and described door fully surround the member of described transducer cabinet.
7. modularization frequency converter system (10) that is used for wind turbine comprising:
Frequency converter, it is suitable for the power conversions that generator produced has a first frequency with described wind turbine and becomes can be fed to the electric power with second frequency on the power network,
According to claim 1 described at least one transducer cabinet (16) to the claim 6.
8. modularization frequency converter system according to claim 7 (10) is characterized in that, described modularization frequency converter system (10) also comprises:
Control cubicle (18),
Wherein, described frequency converter has a plurality of members,
Wherein, described control cubicle is applicable to the member of the described frequency converter of control.
9. modularization frequency converter system according to claim 8 (10) is characterized in that,
The member of described control cubicle (18) and described frequency converter links to each other by fibre circuit.
10. modularization frequency converter system according to claim 7 (10) is characterized in that, described modularization frequency converter system (10) also comprises at least one in following:
Filter cabinet (20), it is accommodated and is used for becoming feed to give the line filter unit of the sinusoidal current of transformer the AC current conversion, and the machine side filter unit of voltage slope that is used to limit the generator of described wind turbine;
Accommodate the cooling cabinet (22) of the member that is used to cool off described frequency converter system;
Accommodate the terminal cabinet (24) that is used for described frequency converter system is connected to the member on the transformer,
At least one energy that collecting company receives the energy bleeder resistance on chopper module cabinet (44) of releasing.
11. modularization frequency converter system according to claim 7 (10) is characterized in that,
At least two cabinets in the described cabinet (16) have the roughly shell of equal shape.
12. according to the described modularization frequency converter system (10) of claim 7 to the claim 11, it is characterized in that,
The cabinet of described frequency converter system shapes and is connected with each other, and makes described cabinet can be arranged in the pylon of the described wind turbine with the circular cross-section of being roughly.
13. a wind turbine (60) comprising:
Pylon (12),
Be positioned at the cabin (64) on the described tower top, the generator (66) that is mechanically connected on the rotor (68) is accommodated in described cabin,
According to the described modularization frequency converter system (10,10 ') of claim 7 to the claim 12,
Wherein, described modularization frequency converter system is arranged in the described pylon.
14. wind turbine according to claim 13 (60) is characterized in that, described wind turbine (60) also comprises:
Be positioned at the platform (28) of described pylon,
Wherein, described modularization frequency converter system is placed on the described platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201621174U CN201742105U (en) | 2009-06-26 | 2009-06-26 | Modular frequency converter system for wind turbine and converter cabinet thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201621174U CN201742105U (en) | 2009-06-26 | 2009-06-26 | Modular frequency converter system for wind turbine and converter cabinet thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201742105U true CN201742105U (en) | 2011-02-09 |
Family
ID=43557383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201621174U Expired - Lifetime CN201742105U (en) | 2009-06-26 | 2009-06-26 | Modular frequency converter system for wind turbine and converter cabinet thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201742105U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2695502B1 (en) | 2011-04-04 | 2016-03-16 | Woodward Kempen GmbH | Power switchgear cabinet of a device for producing electric energy |
-
2009
- 2009-06-26 CN CN2009201621174U patent/CN201742105U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2695502B1 (en) | 2011-04-04 | 2016-03-16 | Woodward Kempen GmbH | Power switchgear cabinet of a device for producing electric energy |
| EP2695501B1 (en) | 2011-04-04 | 2021-06-02 | ConverterTec Deutschland GmbH | Switchgear cabinet arrangement of a device for producing electric energy |
| EP2695502B2 (en) † | 2011-04-04 | 2022-07-27 | ConverterTec Deutschland GmbH | Power switchgear cabinet of a device for producing electric energy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8830658B2 (en) | Switchgear cabinet arrangement of a device for producing electric energy | |
| CN201623478U (en) | Photovoltaic direct-current lightning-protection header box | |
| RU2566811C2 (en) | Uninterrupted power supply unit, power supply system and usage of uninterrupted power supply unit | |
| CN207819229U (en) | One kind being used for distributed energy storage power station container | |
| US10090703B2 (en) | Converter module and switchgear assembly for AC and DC power distribution | |
| US10797514B2 (en) | Fuel cell system for information technology loads | |
| CN102545261A (en) | Micro-grid experiment system | |
| AU2009237750A1 (en) | Wind energy system comprising busbars | |
| CN103441689B (en) | A kind of Modular photovoltaic combining inverter structure | |
| JP2012515519A (en) | Power supply system and solar cell device therefor | |
| CN213521301U (en) | Data center power distribution system | |
| KR101742600B1 (en) | Distributing borad with uninterruptible function | |
| CN108565755A (en) | Photovoltaic generation integral intelligent boosting box-type substation | |
| CN201742105U (en) | Modular frequency converter system for wind turbine and converter cabinet thereof | |
| EP2790286A1 (en) | Switchgear assembly, DC power distribution system, DC power distribution board | |
| US20120230072A1 (en) | Circuit assembly having a converter part comprising a central control unit | |
| CN203617887U (en) | A low voltage ride-through current transformer power module | |
| CN115663782A (en) | Power supply system of power plant | |
| US20220216716A1 (en) | Plug-in type energy storage system | |
| CN213093888U (en) | High-performance plug-and-play micro-grid energy storage system | |
| CN203839980U (en) | Photovoltaic power station grid-connected system | |
| CN203071442U (en) | A high-voltage capacitor device | |
| CN210577825U (en) | Prefabricated cabin of energy storage power station shutter | |
| EP2887782A1 (en) | Switchgear assembly and power distribution system | |
| CN209730740U (en) | A kind of safety and stability cell enclosed type bus duct |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |