CN107017785A - A kind of solid-state transformer - Google Patents
A kind of solid-state transformer Download PDFInfo
- Publication number
- CN107017785A CN107017785A CN201610059576.4A CN201610059576A CN107017785A CN 107017785 A CN107017785 A CN 107017785A CN 201610059576 A CN201610059576 A CN 201610059576A CN 107017785 A CN107017785 A CN 107017785A
- Authority
- CN
- China
- Prior art keywords
- power
- veneer
- copper bar
- input
- metal substrate
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The present invention provides a kind of solid-state transformer, it includes multiple power cells, each power cell includes low-voltage module, high-frequency isolation transformer, high-pressure modular and to connector assembly, it is described connector assembly to be fixed on rack backboard, direct current input outside the input connection power cell of the low-voltage module, the output end of the low-voltage module connects the input of high-frequency isolation transformer, side of the output end insertion of the high-frequency isolation transformer to connector assembly, opposite side of the input insertion of the high-pressure modular to connector assembly, exchange output outside the output end connection power cell of the high-pressure modular, the input conducting of the output end that high-frequency isolation transformer can be made to connector assembly and high-pressure modular.Solid-state transformer compact conformation of the present invention, maintainability are good, and suitable for industrial applications.
Description
Technical field
The present invention relates to electric and electronic technical field, and in particular to a kind of solid-state transformer.
Background technology
With the rise and development of energy internet, modern power systems are just occurring deeply
Change, and conventional electric power system can not meet demand.Solid-state transformer is used as one kind
Novel electric power apparatus, can be by Technics of Power Electronic Conversion technology and based on electromagnetic induction principle
High-frequency electrical energy converter technique is combined, and a kind of electric energy of electrical nature is changed into another
The electric energy of electrical nature is planted, it is applied to after power system, it will improve the quality of power supply,
The stability of a system is improved, is realized under flexible power transmission mode and electricity market to power tide
The real-time control of stream.Therefore solid-state transformer interconnects network operation and the tool of control as the energy
Body implementation, by the core as energy internet.
However, at present home and abroad to the research of solid-state transformer all also in laboratory sample
The machine stage, it is impossible to meet industrialization demand.Moreover, laboratory prototype has the following disadvantages
Part：
1. laboratory prototype is generally all to realize based on control function, using standardization
Design, structure is not compact, and volume is big；
2. laboratory prototype is less to the reliability requirement of device, and the mode of connection is not met
Industry relevant criterion, is not suitable for industrial applications；
3. laboratory prototype is maintainable poor, to Fast Installation, dismantle and quick
Safeguard all without strict requirements, it is impossible to obtain the accreditation in market.
It can be seen that, a kind of compact conformation of design, maintainability are good, and suitable for industrial applications
Solid-state transformer turn into technical problem urgently to be resolved hurrily at present.
The content of the invention
The technical problems to be solved by the invention are for above-mentioned in the presence of prior art
Defect is there is provided a kind of compact conformation, maintainable good, and consolidating suitable for industrial applications
State transformer.
Solving the technical scheme that is used of present invention problem is：
The present invention provides a kind of solid-state transformer, and it includes multiple power cells, Mei Gegong
Rate unit includes low-voltage module, high-frequency isolation transformer, high-pressure modular and to connector assembly,
It is described connector assembly to be fixed on rack backboard, the input connection work(of the low-voltage module
Direct current input outside rate unit, the output end connection high-frequency isolation of the low-voltage module becomes
The input of depressor, the output end of the high-frequency isolation transformer is inserted to the one of connector assembly
Side, the input insertion of the high-pressure modular is to the opposite side of connector assembly, the high pressing mold
Exchange output outside the output end connection power cell of block, it is described that height can be made to connector assembly
The output end of frequency isolating transformer and the input of high-pressure modular are turned on.
Preferably, stacking is used inside the low-voltage module and inside the high-pressure modular
Formula structure.
Preferably, the low-voltage module includes the first framework, and is arranged at the first framework
It is internal such as lower component：
First metal substrate, be arranged on the first metal substrate side first control veneer,
It is arranged on the first draw-out power supply of the first metal substrate opposite side, the second metal substrate, sets
Put the second metal substrate side the first power veneer and with the first power veneer
First inlet wire copper bar of input connection, and the first inlet wire copper bar connection power cell
Outside direct current input, the output end connection high-frequency isolation transformer of the first power veneer
Input；
The high-frequency isolation transformer is fixed on the first lower portion.
Preferably, the first power veneer is fixed on second by multiple hexagonal insulated columns
The side of metal substrate；
The low-voltage module also includes being arranged at the first insulation board of the first lower portion, the
Two insulation boards and the first air channel installing plate, first insulation board are fixed in the first framework
Side on, second insulation board and the first air channel installing plate are arranged at the first power
Between veneer and the second metal substrate, second insulation board is fixed on the second metal substrate
Upper, vertical with the first insulation board and be vertically arranged, first air channel installing plate uses U
Shape structure, it is open towards second insulation board, and is fixed on the first insulation board and second exhausted
Between listrium, the first radiator is provided with the installing plate of first air channel；
Through hole is provided with the installing plate of first air channel at position corresponding with the first radiator,
The heater members of the first power veneer are fixed on the first radiator through the through hole.
Preferably, the low-voltage module also includes the angle Support for being arranged at the first lower portion,
The first inlet wire copper bar and angle Support are using L-shaped structure and be arrangeding in parallel, and described the
Direct current input outside one side wall connection power cell of one inlet wire copper bar, described first
Another side wall of inlet wire copper bar sequentially passes through the side in the first framework and first exhausted
Listrium is simultaneously fixedly connected with a side wall of angle Support, and another side of the angle Support
Wall is fixed on the first insulation board, and another article of side wall of the first inlet wire copper bar is also with
The input connection of one power veneer.
Preferably, the high-pressure modular includes the second framework, and is arranged at the second framework
It is internal such as lower component：
3rd metal substrate, the second power veneer for being arranged on the 3rd metal substrate side,
3rd power veneer, the second control veneer and the second draw-out power supply and the 3rd power veneer
Input connection the second inlet wire copper bar, be arranged on the friendship of the 3rd metal substrate opposite side
Stream filter inductance and capacitor board and the outlet being connected with the output end of ac filter inductance
Copper bar,
And the second inlet wire copper bar connects the output end and of high-frequency isolation transformer respectively
The input of three power veneers, the output end and the second power list of the 3rd power veneer
The input of plate is connected with capacitor board, the output end connection exchange filter of the second power veneer
The input of ripple inductance, the output end connection outlet copper bar of the ac filter inductance, institute
State the exchange output that outlet copper bar is also connected with outside power cell.
Preferably, the high-pressure modular also includes being individually fixed on the second framework medial surface
The 3rd insulation board and the 4th insulation board,
The second inlet wire copper bar sequentially passes through side and the 4th insulation board in the second framework
And be fixed on the second framework, and the second inlet wire copper bar be located at the second framework outside one
The output end of end connection high-frequency isolation transformer, the second inlet wire copper bar is located at the second frame
One end in frame connects the input of the 3rd power veneer；
The outlet copper bar sequentially passes through side in the second framework and the 3rd insulation board and solid
It is scheduled on the second framework, and one end connection that the outlet copper bar is located in the second framework is handed over
The output end of filter inductance is flowed, the outlet copper bar is located at one end connection outside the second framework
Exchange output outside power cell.
Preferably, the second power veneer, the 3rd power veneer and the second control veneer difference
The side of the 3rd metal substrate is fixed on by multiple hexagonal insulated columns；
The high-pressure modular also includes being arranged at the second lower portion, and positioned at the second power
The second air channel installing plate between veneer and the 3rd metal substrate, and positioned at the 3rd power
Install in the 3rd air channel installing plate between veneer and the 3rd metal substrate, second air channel
Plate and the 3rd air channel installing plate use U-shaped structure, and the opening of the two is towards the 3rd gold medal
Category substrate is simultaneously fixed thereon, and the second radiator, the 3rd are provided with the second air channel installing plate
The 3rd radiator is provided with the installing plate of air channel；
Through hole is provided with the installing plate of second air channel at position corresponding with the second radiator,
The heater members of the second power veneer are fixed on the second radiator through the through hole；
Through hole, institute are provided with the 3rd air channel installing plate at position corresponding with the 3rd radiator
The heater members for stating the 3rd power veneer are fixed on the 3rd radiator through the through hole.
Preferably, the high-pressure modular is also folded including being arranged at the first of the second lower portion
With the second power veneer pair on layer busbar and the second stack bus bar, the 3rd metal substrate
The first hole is provided with the position answered, is provided with position corresponding with the 3rd power veneer
Second hole, first stack bus bar through the first hole and two ends respectively with the second power list
Plate and capacitor board connection, second stack bus bar is through the second hole and two ends respectively with the
Three power veneers and capacitor board connection.
Preferably, the high-frequency isolation transformer uses horizontal type structure, and its output end is used
Copper bar outlet, input use high-voltage line outlet, and full skirt is provided with around copper bar, described
Full skirt, which is adopted, to be made from an insulative material.
Beneficial effect：
Solid-state transformer of the present invention uses modular technology, by whole solid-state transformer
It is divided into multiple independent power cells, and modular technology is solid-state transformer realizes market
The key technology of change, both causes solid-state transformer compact conformation, and solid-state transformer is caused again
Suitable for industrial applications, moreover it is possible to improve the reliability and maintainability of solid-state transformer；And
And, by inserting between the high-frequency isolation transformer and high-pressure modular that are connected with low-voltage module
Component is connected, i.e., therebetween using the connection of mutual-inserting type structure, therefore mount and dismount all pole
For convenience, it is quick, accordingly reduce assembly work amount.
Brief description of the drawings
Fig. 1 is the front view of power cell provided in an embodiment of the present invention；
Fig. 2 is low-voltage module provided in an embodiment of the present invention and the knot of high-frequency isolation transformer
One of structure schematic diagram；
Fig. 3 is low-voltage module provided in an embodiment of the present invention and the knot of high-frequency isolation transformer
The two of structure schematic diagram；
Fig. 4 is low-voltage module provided in an embodiment of the present invention and the knot of high-frequency isolation transformer
The three of structure schematic diagram；
Fig. 5 is the part-structure schematic diagram of low-voltage module provided in an embodiment of the present invention；
Fig. 6 is the structural representation of high-frequency isolation transformer provided in an embodiment of the present invention；
Fig. 7 is the structural representation provided in an embodiment of the present invention to connector assembly；
Fig. 8 is one of structural representation of high-pressure modular provided in an embodiment of the present invention；
Fig. 9 is the two of the structural representation of high-pressure modular provided in an embodiment of the present invention；With
And
Figure 10 is the three of the structural representation of high-pressure modular provided in an embodiment of the present invention.
In figure：1- low-voltage modules；2- is to connector assembly；3- rack backboards；4- high pressures
Module；The frameworks of 5- first；6- the first power veneers；7- high-frequency isolation transformers；8
- the first control veneer；The radiators of 9- first；The draw-out power supplies of 10- first；11- first
Bottom plate；12nd, 22,31- hexagonal insulated columns；The metal substrates of 13- first；14- first
Left plate；15- the first inlet wire copper bars；16- angle Supports；The insulation boards of 17- first；18
- the first air channel installing plate；The top plates of 19- first；The insulation boards of 20- second；21- second
Metal substrate；23- columns；24- loading plates；25- installed parts；26- power terminals；
The frameworks of 27- second；The top plates of 271- second；The left plates of 272- second；The bottoms of 273- second
Plate；28- right plates；29- second controls veneer；The draw-out power supplies of 30- second；32-
3rd metal substrate；33- the second power veneers；The power veneers of 34- the 3rd；35- is handed over
Flow filter inductance；The insulation boards of 36- the 3rd；37- outlet copper bars；38- capacitor boards；39
- the first stack bus bar；The radiators of 40- second；The second air channels of 41- installing plate；42-
3rd air channel installing plate；The radiators of 43- the 3rd；44- the second inlet wire copper bars；45-
Two stack bus bars；The insulation boards of 46- the 4th.
Embodiment
To make those skilled in the art more fully understand technical scheme, tie below
Drawings and examples are closed to be described in further detail the present invention.
It should be appreciated that in embodiments of the present invention, term " on ", " under ", " left side "
" right side " refer to respectively in accompanying drawing it is pointed " on " side, " under " side, " left side " side and " right side " it is square.
The embodiment of the present invention provides a kind of solid-state transformer towards energy internet, and it is wrapped
Include rack and be arranged at multiple power cells of interior of equipment cabinet, each power cell is in rack
The set location in portion should be arranged according to default order.
Become as shown in figure 1, each power cell includes low-voltage module 1, high-frequency isolation
Depressor 7, high-pressure modular 4 and to connector assembly 2, and the input connection work(of low-voltage module 1
Direct current input outside rate unit, the output end connection high-frequency isolation transformation of low-voltage module 1
The input (low-pressure side) of device 7, the output end (high-pressure side) of high-frequency isolation transformer 7
The side to connector assembly 2 is inserted, the input of high-pressure modular 4 is inserted to connector assembly 2
Exchange output outside opposite side, the output end connection power cell of high-pressure modular 4, it is right
Connector assembly 2 can make the output end of high-frequency isolation transformer 7 and the input of high-pressure modular 4
Conducting, then when the output end of high-frequency isolation transformer 7 and the input of high-pressure modular 4 are complete
When being fully inserted into in connector assembly 2, low-voltage module 1 passes through high-frequency isolation transformer 7 and height
Die block 4 is fully on；, only need to be by high-frequency isolation transformation when needing to overhaul or safeguard
Device 7 and/or high-pressure modular 4 are extracted to connector assembly 2.
Wherein, low-voltage module 1 is fixed together with high-frequency isolation transformer 7, and high frequency
Isolating transformer 7 has the effect for isolating high step voltage；Each power cell to inserting
Component 2 has predeterminated position in rack, and is fixed on the rack back of the body in its predetermined position
On plate 3 so that the output end of the high-frequency isolation transformer 7 of each power cell and
The input of high-pressure modular 4 is inserted behind the both sides to connector assembly respectively, and each power cell exists
Interior of equipment cabinet can be arranged according to default order, and then it is integrated to form a kind of many power cells
Change, the solid-state transformer of mutual-inserting type structure, its compact conformation, electricity piece be rationally distributed,
Complete machine structure is simple, suitable for industrial applications；Moreover, in rack between each power cell
Separate, cabling is simple, accordingly improves the reliability of solid-state transformer and can safeguard
Property；In addition, each power cell is fixed on rack backboard by mutual-inserting type structure,
It is easily installed and dismantles, considerably reduce assembly work amount, also causes complete machine structure letter
It is single, it is easy to trouble-shooting point, to be easy to maintenance.
More preferably, each connector assembly 2 is included being fixed in rack and presets position with it
Corresponding guide rail (not shown) is put, to cause the high-frequency isolation of each power cell
Transformer 7 and high-pressure modular 4 can insert the both sides to connector assembly 2 respectively along guide rail,
In order to assemble.
It should be noted that in the present embodiment, between all parts, or same part
Between each interior part, welding, screwing or the connected mode of riveting can be used,
Those skilled in the art can select suitable connected mode according to actual conditions.
Low-voltage module 1, high-frequency isolation transformer 7 are described separately below, to the and of connector assembly 2
The concrete structure of high-pressure modular 4.
As shown in Figure 2-5, the inside of low-voltage module 1 uses stacked structure.
The low-voltage module 1 includes the first framework 5, and is arranged in the first framework 5
Portion such as lower component：First metal substrate 13, be arranged on the first metal substrate side
One control veneer 8, be arranged on the first metal substrate opposite side the first draw-out power supply 10,
Second metal substrate 21, the first power veneer 6 for being arranged on the second metal substrate side,
And (the one portion of the first inlet wire copper bar 15 being connected with the input of the first power veneer 6
Divide and be located inside the first framework 5, another part is located at outside the first framework 5, in order to
Wiring), wherein the first inlet wire copper bar 15 is also connected with the direct current input outside power cell,
The output end of first power veneer 6 connects the input (low pressure of high-frequency isolation transformer 7
Side)；High-frequency isolation transformer 7 is fixed on inside the first framework 5, so that and low pressure molding
Block 1 is fixed together.Wherein, the effect of the first power veneer 6 inputs direct current
Electric energy is converted into the alternating current of high frequency；The effect of first control veneer 8 is to the first power
Veneer 6 carries out intelligent control, it is normally carried out transformation of electrical energy；First draw-out power supply 10
Effect be from direct current input electric energy power taking, as power supply be first control veneer 8 supply
Electricity.
In the present embodiment, the second metal substrate 21 and the first power veneer 6 being vertically arranged
The top in the first framework 5 is respectively positioned on, the first metal substrate 13, first being vertically arranged
The control draw-out power supply 10 of veneer 8 and first is respectively positioned on the lower left quarter in the first framework 5, and
High-frequency isolation transformer 7 is located at the right lower quadrant in the first framework 5.
Specifically, as shown in figure 5, the first framework 5 includes first 19, first left side of top plate
Side plate 14, the first bottom plate 11, loading plate 24 and two root posts 23.Wherein, the first top
The bottom plate 11 of plate 19 and first is oppositely arranged, the first left plate 14 and the phase of two root posts 23
Be arranged on over the ground between the first top plate 19 and the first bottom plate 11 and respectively with the two it is left,
Right part connects, to play a supportive role.Certainly, for the ease of assembling low-voltage module 1
Miscellaneous part, two root posts 23 need to be vertically arranged, and the spacing of the two should be remote as much as possible,
In other words, position is answered per the top plate 19 of root post 23 and first, the junction of the first bottom plate 11
In the first top plate 19, the summit edge of the first bottom plate 11.All sides of first top plate 19
The equal downward bending of edge, the upward bending in all edges of the first bottom plate 11, in order to
One left plate 14, two root posts 23 are fixed；Loading plate 24 is used to fix high-frequency isolation change
Depressor 7, its at least two relative edge downward bending, its width is equal to the first bottom plate
11 width, length are less than the length of the first bottom plate 11, and are fixed on the first bottom plate 11
Right side (equivalent to " back-off " on the right side of the first bottom plate 11) on, due to the first bottom
The upward bending in all edges of plate 11, forms the structure similar to matchbox, is not easy to
Fixed high-frequency isolation transformer 7, and the loading plate 24 tipped upside down on the first bottom plate 11 is set,
Plane (the i.e. upper table of loading plate 24 for being easily installed high-frequency isolation transformer 7 can be provided
Face).First framework 5 is preferred to use Metal plate and is made, it is easy to batch machining, and adds
Work is simple, cost is low.In the present embodiment, the first framework 5 it is rationally distributed, so as to subtract
The small overall dimensions of power cell, improve the overall power density of power cell.
In the present embodiment, the first left plate 14 of left end connection of the first metal substrate 13,
Bottom connects the first bottom plate 11；First control veneer 8 passes through multiple hexagonal insulated columns 12 (this
Using four hexagonal insulated columns in embodiment) side of the first metal substrate 13 is fixed on,
So as to be fixed on the first metal substrate 13；The left end connection the of second metal substrate 21
One left plate 14, top connect the first top plate 19；First power veneer 6 passes through multiple six
Angle insulated column 22 (using four hexagonal insulated columns in the present embodiment) is fixed on the second metal
The side of substrate 21, so as to be fixed on the second metal substrate 21.
As shown in figure 5, low-voltage module 1 also includes being arranged at the inside the first framework 5
One insulation board 17, the second insulation board 20 and the first air channel installing plate 18.First insulation board
17 are fixed on the first left plate 14 of the first framework 5, and the two be arranged in parallel, and second
The air channel installing plate 18 of insulation board 20 and first is arranged at the first power veneer 6 and second
Between metal substrate 21, and the second insulation board 20 is fixed on (two on the second metal substrate 21
Person be arranged in parallel), it is vertical with the first insulation board 17 and be vertically arranged, the first air channel is installed
Plate 18 uses U-shaped structure, and it is open towards the second insulation board 20, exhausted with first respectively
The insulation board 20 of listrium 17 and second is connected, and it is exhausted to be fixed on the first insulation board 17 and second
Between listrium 20；Installed on first left plate 14 and the first insulation board 17 with the first air channel
Plate 18 is provided with air inlet at corresponding position, so as to ventilation and heat；Install in the first air channel
The first radiator 9 (as shown in Figure 3), the first air channel installing plate 18 are provided with plate 18
Upper (is square logical in the present embodiment with being provided with through hole at the corresponding position of the first radiator 9
Hole), the heater members of the first power veneer 6 are fixed on the first radiator 9 through the through hole
On.In the present embodiment, the effect of the first insulation board 17 and the second insulation board 20 is to avoid
The heater members of first power veneer 6 puncture and pacify the first radiator 9 and the first air channel
Fill plate 18 powered, and then avoid the first framework 5 powered, improve safe class.
As shown in figure 5, low-voltage module 1 is also curved inside the first framework 5 including being arranged at
Corner fittings 16, the first inlet wire copper bar 15 and angle Support 16 using L-shaped structure and parallel are set
Put, herein, the first inlet wire copper bar 15 and angle Support 16 be arranged in parallel and meant, the
One side wall of one inlet wire copper bar 15 and a side wall of angle Support 16 be arranged in parallel and two
The bearing of trend of person is identical, another side wall and the angle Support 16 of the first inlet wire copper bar 15
Another side wall be arranged in parallel and the bearing of trend of the two is identical.First inlet wire copper bar 15
A side wall connection power cell outside direct current input, the first inlet wire copper bar 15 it is another
One side wall sequentially passes through the first left plate 14 and the first insulation board 17 of the first framework 5
And be fixedly connected with a side wall of angle Support 16, and another side wall of angle Support 16
It is fixed on the first insulation board 17, in the present embodiment, angle Support 16 is played to be entered first
Line copper bar 15 is fixed on the effect on the first left plate 14；First inlet wire copper bar 15 it is another
One side wall in their extension direction than connected angle Support 16 a side wall it is long
Degree is slightly longer, and the slightly longer part is provided with through hole, and the first inlet wire copper bar 15 passes through the through hole
Intraconnections is connected with the input of the first power veneer 6.In the present embodiment, the first inlet wire
Copper bar 15 uses two, correspondingly, and angle Support 16 also uses two；First takes energy electricity
Source 10 is respectively from power taking on the two first inlet wire copper bars 15.
More preferably, the separate type device that the first power veneer 6 is encapsulated using TO-247, this
The rectifier planted in the first power veneer 6 of structure is designed to veneer pattern, so as to subtract
The small size of power cell.
It should be noted that Fig. 2, Fig. 3 and Fig. 5 are stereograms, Fig. 4 is backsight
Figure, Fig. 3 conceals the first power veneer 6 and the first control veneer 8, figure compared to Fig. 2
5 conceal the first power veneer 6, first control veneer 8 and high-frequency isolation compared to Fig. 2
Transformer 7.
High-frequency isolation transformer 7 is used to isolate low-voltage module 1 and high-pressure modular 4, and solid
On the loading plate 24 for being scheduled on the first framework 5.As shown in fig. 6, the present embodiment medium-high frequency every
Horizontal type structure is used from transformer 7, i.e. side outlet, its high-pressure side output end ab is used
Copper bar outlet, and full skirt is provided with around copper bar, to cause the high pressure of high-frequency isolation transformer
Side outlet uses umbrella skirt construction, so as to add creep age distance, reduces low-voltage module 1
To the distance of high-pressure modular 4, and then the overall dimensions of power cell are reduced, and improved
The power density of power cell, wherein, full skirt, which is adopted, to be made from an insulative material, and copper bar
Creep age distance to the body of high-frequency isolation transformer 7 is more than 300mm；High-frequency isolation transformation
The low-pressure side input AB of device 7 uses high-voltage line outlet, and the advantage of this design is nothing
By low-pressure side input AB outlet have how long, high-pressure side output end ab copper bar is all full
The creep age distance of foot to low-pressure side input AB outlet terminal is more than 300mm.In addition,
Whole power cell can be effectively reduced using the high-frequency isolation transformer 7 of horizontal type structure
Height, and using side outlet with using top compared with cabling on cable rack, can be avoided
The problem of needing to keep enough electric clearances with low-voltage module 1 during outlet so that power
Cell layout is more compact.During installation, the high-pressure side copper bar edge of high-frequency isolation transformer 7
Guide rail is inserted directly into the side to connector assembly 2.
Existing structure can be used to connector assembly 2, only high-frequency isolation transformer 7 need to be met
The input of output end and high-pressure modular 4 can make the two conducting i.e. after being inserted respectively along guide rail
Can.In the present embodiment, as shown in fig. 7, including two guide rails to connector assembly 2 (in figure
It is not shown), installed part 25 and two power terminals 26, two power terminals 26 are all provided with
Put within installed part 25, and each power terminal 26 two terminations from installed part
25 arranged on left and right sides is stretched out, and two guide rails set up separately in the both sides of installed part 25, installed part
25 are fixed on rack backboard 3, then power terminal 26 is fixed on machine by installed part 25
On cabinet backboard 3, during installation, the output end and high-pressure modular 4 of high-frequency isolation transformer 7
Input inserted respectively along two guide rails so that respectively with two power terminals 26 it is left,
Right two terminations contact and turned on, during dismounting, only need to be fixedly connected with low-voltage module 1
High-frequency isolation transformer 7 and high-pressure modular 4 extracted respectively along guide rail.
As seen in figs. 8-10, the inside of high-pressure modular 4 also uses stacked structure.
The high-pressure modular 4 includes the second framework 27, and is arranged at the second framework 27
It is internal such as lower component：3rd metal substrate 32, it is arranged on the 3rd metal substrate side
Second power veneer 33, the 3rd power veneer 34, second control veneer 29 and second take
Energy power supply 30, the second inlet wire copper bar 44 being connected with the input of the 3rd power veneer 34
(one part is located inside the second framework 27, and another part is located at outside the second framework 27
Portion, in order to wiring), be arranged on the ac filter inductance of the 3rd metal substrate opposite side
35 and capacitor board 38 and the outlet copper that is connected with the output end of ac filter inductance 35
(one part is located inside the second framework 27 row 37, and another part is located at the second framework
Outside 27, in order to wiring), and the two ends of the second inlet wire copper bar 44 connect high frequency respectively
The output end (high-pressure side) and the input of the 3rd power veneer 34 of isolating transformer 7,
The input of the output end of 3rd power veneer 34 and the second power veneer 33 is and electric capacity
Plate 38 is connected, and the output end of the second power veneer 33 connects the defeated of ac filter inductance 35
Enter end, the output end connection outlet copper bar 37 of ac filter inductance 35, outlet copper bar 37
It is also connected with the exchange output outside power cell.In the present embodiment, the second inlet wire copper bar 44
Using two, outlet copper bar 37 also uses two.During whole machine installation, when high-frequency isolation becomes
The high-pressure side output copper bar of depressor 7 inserts the side to connector assembly 2, and high-pressure modular 4
The second inlet wire copper bar 44 when inserting the opposite side to connector assembly 2, low-voltage module 1 passes through
High-frequency isolation transformer 7 is turned on high-pressure modular 4.
Wherein, the effect of the second power veneer 33 is that direct current is changed into industrial-frequency alternating current,
Then grid requirements can be met；The effect of 3rd power veneer 34 is by high-frequency alternating current
Become direct current；The effect of second control veneer 29 is respectively to the second power veneer 33
Intelligent control is carried out with the 3rd power veneer 34, makes the two normal work；Capacitor board 38
Effect be, by direct current energy energy storage, to make it steady and fluctuate small；Second draw-out power supply 30
Effect be direct current energy power taking from capacitor board 38, be the second control veneer as power supply
29 power supplies；The effect of ac filter inductance 35 is that the ripple that power frequency is exported into alternating current is filtered out.
In the present embodiment, the 3rd metal substrate 32, the second power veneer 33, the 3rd power
The control of veneer 34, second veneer 29, the second draw-out power supply 30, ac filter inductance 35
It is vertically arranged with capacitor board 38.Moreover, for the side of the 3rd metal substrate 32,
Second power veneer 33 is located at the upper left quarter in the second framework 27, the second power veneer 34
Lower left quarter in the second framework 27, the second control draw-out power supply of veneer 29 and second
30 are respectively positioned on the right part in the second framework 27；For the opposite side of the 3rd metal substrate 32,
Ac filter inductance 35 is located at the upper right quarter in the second framework 27, and capacitor board 38 is located at the
Left part in two frameworks 27；Second inlet wire copper bar 44 is set close to the 3rd air channel installing plate 42
Put, and outlet copper bar 37 is set close to ac filter inductance 35.
Specifically, as shown in figure 8, the second framework 27 includes the second top plate 271, second
Left plate 272, the second bottom plate 273 and right plate 28.Wherein, the He of the second top plate 271
Second bottom plate 273 is oppositely arranged, and the second left plate 272 and right plate 28 are oppositely disposed
Between the second top plate 271 and the second bottom plate 273 and respectively left and right end with the two
Connect, to play a supportive role.In the present embodiment, the second top plate 271, the second left plate
272nd, the inside lateral bending folding in the edge of the second bottom plate 273 and right plate 28, in order to fill
Match somebody with somebody；Second left plate 272, the second bottom plate 273 and right plate 28 can be using one piece of metal plates
Material buckles are formed, i.e., using integral structure, its benefit be easy for processing and cost compared with
It is low.Second framework 27 is preferred to use Metal plate and is made, it is easy to batch machining, and processing
Simply, cost is low.In the present embodiment, the second framework 27 it is rationally distributed, so as to reduce
The overall dimensions of power cell, improve the overall power density of power cell.
In the present embodiment, the top of the 3rd metal substrate 32 is connected with the second top plate 271,
Left end is connected with the second left plate 272, and bottom is connected with the second bottom plate 273, right-hand member with
Right plate 28 is connected.Second power veneer 33, the control of the 3rd power veneer 34, second
Veneer 29 and capacitor board 38 respectively by multiple hexagonal insulated columns 31 (in the present embodiment,
Above-mentioned four using four hexagonal insulated columns) side of the 3rd metal substrate 32 is fixed on,
So as to be fixed on the 3rd metal substrate 32；Second draw-out power supply 30 is fixed on the 3rd gold medal
Belong to the side of substrate 32 and between the second control metal substrate 32 of veneer 29 and the 3rd,
I.e. second control veneer 29 is located on the second draw-out power supply 30.
As shown in Figure 9 and Figure 10, high-pressure modular 4 also includes being arranged at the second framework 27
Internal the 3rd insulation board 36 and the 4th insulation board 46.3rd insulation board 36 is fixed on
On the right plate 28 of two frameworks 27 (the two be arranged in parallel), the 4th insulation board 46 is fixed
(the two be arranged in parallel), the second inlet wire on the second left plate 272 of the second framework 27
Copper bar 44 sequentially passes through the second left plate 272 and the 4th insulation board 46 of the second framework 27
And be fixed on the second left plate 272, and the second inlet wire copper bar 44 is located at outside the second framework
One end connect the output end of high-frequency isolation transformer 7, the second inlet wire copper bar 44 is located at the
One end in two frameworks connects the input of the 3rd power veneer 34；Outlet copper bar 37 according to
It is secondary to pass through the insulation board 36 of right plate 28 and the 3rd of the second framework 27 and be fixed on right plate
On 28, and outlet copper bar 37 is located at one end connection ac filter inductance in the second framework
35 output end, outlet copper bar 37 is located at outside one end connection power cell outside the second framework
The exchange output in portion.In the present embodiment, the effect of the 3rd insulation board 36 is isolation outlet copper
The right plate 28 of the framework 27 of row 37 and second, it is to avoid the second framework 27 is powered；4th is exhausted
The effect of listrium 46 is the second left side for isolating the second inlet wire copper bar 44 and the second framework 27
Plate 272, it is to avoid the second framework 27 is powered.
As shown in figs, high-pressure modular 4 also includes being arranged at the second framework 27
Inside, and positioned at the second wind between the second power veneer 33 and the 3rd metal substrate 32
Road installing plate 41, and between the 3rd power veneer 34 and the 3rd metal substrate 32
The 3rd air channel installing plate 42, the second air channel installing plate 41 and the 3rd air channel installing plate 42
U-shaped structure is used, the opening of the two towards the 3rd metal substrate 32 and is fixed on it
On, and it is provided with the second radiator 40, the 3rd air channel installing plate in the second air channel installing plate 41
The 3rd radiator 43 is provided with 42；With the second radiator 40 on second air channel installing plate 41
Provided with through hole (being square through hole in the present embodiment), the second power list at corresponding position
The heater members of plate 33 are fixed on the second radiator 40 through the through hole；3rd air channel
With being provided with through hole (the present embodiment at the corresponding position of the 3rd radiator 43 on installing plate 42
In be square through hole), the heater members of the 3rd power veneer 34 are fixed on through the through hole
On 3rd radiator 43.
As shown in figs, high-pressure modular 4 also includes being arranged at the second framework 27
On internal the first stack bus bar 39 and the second stack bus bar 45, the 3rd metal substrate 32
With being provided with the first hole (side of being in the present embodiment at the corresponding position of the second power veneer 33
Hole), with being provided with second hole (the present embodiment at the corresponding position of the 3rd power veneer 34
In be square hole), the first stack bus bar 39 through the first hole and two ends respectively with the second power
Veneer 33 and capacitor board 38 are connected, so that by the second power veneer 33 and capacitor board 38
Connect, to reduce interference, the second stack bus bar 45 passes through the second hole and two ends to distinguish
It is connected with the 3rd power veneer 34 and capacitor board 38, so that by the He of the 3rd power veneer 34
Capacitor board 38 is connected, to reduce interference.
More preferably, between the edge in the first hole and the corresponding metal edges of the first stack bus bar 39
It is all higher than away from, the edge in the second hole with the spacing of the corresponding metal edges of the second stack bus bar 45
10mm, preferably 20mm, to ensure the minimum required by 1000V voltage class electrically
Gap；The effect of first stack bus bar 39 and the second stack bus bar 45 is to reduce direct current
The stray inductance in loop, makes circuit safer.
More preferably, the second power veneer 33 and the 3rd power veneer 34 use TO-247
The separate type device of encapsulation, the second power veneer 33 of this structure and the 3rd power veneer
Rectifier in 34 is designed to veneer pattern, so as to reduce the size of power cell.
More preferably, as shown in figure 9, capacitor board 38 uses on-board capacitors, and many electric capacity
Parallel connection is integrated into one piece of capacitor board, and compared to general column electric capacity, on-board capacitors are improved
Filtering performance, and dramatically saves on power cell internal space.
It should be noted that Fig. 8 is stereogram, Fig. 9 is front view, and Figure 10 is backsight
Figure, Figure 10 conceals the second power veneer 33 and the 3rd power veneer 34 relative to Fig. 8.
In summary, in solid-state transformer provided in an embodiment of the present invention, low-voltage module with
High-frequency isolation transformer is fixed together, and between high-frequency isolation transformer and high-pressure modular
Connected using mutual-inserting type structure so that each power cell uses mutual-inserting type structure and solid
Due to interior of equipment cabinet, so that the solid-state transformer being made up of multiple power cells is installed
It is convenient, fast, considerably reduce assembly work amount；
The frame structure of low-voltage module and high-pressure modular is all made of Metal plate, it is easy to
Batch machining, and processing is simple, cost is low；
High-pressure modular is connected the second power veneer and capacitor board by the first stack bus bar
Come, connected the 3rd power veneer and capacitor board by the second stack bus bar, it is maximum
Reduce to limit interference；
High-frequency isolation transformer output end uses copper bar outlet, and provided with full skirt around copper bar,
Therefore creep age distance is added, reduces low-voltage module to the distance of high-pressure modular, so that
The overall dimensions of solid-state transformer are reduced, the power density of solid-state transformer is improved.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present
And the illustrative embodiments used, but the invention is not limited in this.For ability
For those of ordinary skill in domain, the situation of spirit and substance of the present invention is not being departed from
Under, various changes and modifications can be made therein, and these variations and modifications are also considered as the present invention's
Protection domain.
Claims (10)
1. a kind of solid-state transformer, it is characterised in that the solid-state transformer includes multiple
Power cell, each power cell includes low-voltage module, high-frequency isolation transformer, height
Die block and to connector assembly, described to be fixed on to connector assembly on rack backboard, the low pressure
Module input connection power cell outside direct current input, the low-voltage module it is defeated
Go out the input of end connection high-frequency isolation transformer, the output of the high-frequency isolation transformer
End insertion is to the side of connector assembly, and the input insertion of the high-pressure modular is to connector assembly
Exchange output outside opposite side, the output end connection power cell of the high-pressure modular,
The input of the output end and high-pressure modular that can make high-frequency isolation transformer to connector assembly
Conducting.
2. solid-state transformer according to claim 1, it is characterised in that described low
Stacked structure is used inside die block and inside the high-pressure modular.
3. solid-state transformer according to claim 2, it is characterised in that described low
Die block include the first framework, and be arranged at the first lower portion such as lower component：
First metal substrate, be arranged on the first metal substrate side first control veneer,
It is arranged on the first draw-out power supply of the first metal substrate opposite side, the second metal substrate, sets
Put the second metal substrate side the first power veneer and with the first power veneer
First inlet wire copper bar of input connection, and the first inlet wire copper bar connection power cell
Outside direct current input, the output end connection high-frequency isolation transformer of the first power veneer
Input；
The high-frequency isolation transformer is fixed on the first lower portion.
4. solid-state transformer according to claim 3, it is characterised in that described
One power veneer is fixed on the side of the second metal substrate by multiple hexagonal insulated columns；
The low-voltage module also includes being arranged at the first insulation board of the first lower portion, the
Two insulation boards and the first air channel installing plate, first insulation board are fixed in the first framework
Side on, second insulation board and the first air channel installing plate are arranged at the first power
Between veneer and the second metal substrate, second insulation board is fixed on the second metal substrate
Upper, vertical with the first insulation board and be vertically arranged, first air channel installing plate uses U
Shape structure, it is open towards second insulation board, and is fixed on the first insulation board and second exhausted
Between listrium, the first radiator is provided with the installing plate of first air channel；
Through hole is provided with the installing plate of first air channel at position corresponding with the first radiator,
The heater members of the first power veneer are fixed on the first radiator through the through hole.
5. solid-state transformer according to claim 4, it is characterised in that described low
Die block also includes the angle Support for being arranged at the first lower portion, the first inlet wire copper bar
Using L-shaped structure and it is be arranged in parallel with angle Support, one of the first inlet wire copper bar
Direct current input outside the wall connection power cell of side, another of the first inlet wire copper bar
Side wall sequentially pass through the side in the first framework and the first insulation board and with angle Support
One side wall is fixedly connected, and another side wall of the angle Support is fixed on the first insulation
On plate, the input of another side wall of the first inlet wire copper bar also with the first power veneer
End connection.
6. solid-state transformer according to claim 2, it is characterised in that the height
Die block include the second framework, and be arranged at the second lower portion such as lower component：
3rd metal substrate, the second power veneer for being arranged on the 3rd metal substrate side,
3rd power veneer, the second control veneer and the second draw-out power supply and the 3rd power veneer
Input connection the second inlet wire copper bar, be arranged on the friendship of the 3rd metal substrate opposite side
Stream filter inductance and capacitor board and the outlet being connected with the output end of ac filter inductance
Copper bar,
And the second inlet wire copper bar connects the output end and of high-frequency isolation transformer respectively
The input of three power veneers, the output end and the second power list of the 3rd power veneer
The input of plate is connected with capacitor board, the output end connection exchange filter of the second power veneer
The input of ripple inductance, the output end connection outlet copper bar of the ac filter inductance, institute
State the exchange output that outlet copper bar is also connected with outside power cell.
7. solid-state transformer according to claim 6, it is characterised in that the height
Die block also includes the 3rd insulation board and the 4th being individually fixed on the second framework medial surface
Insulation board,
The second inlet wire copper bar sequentially passes through side and the 4th insulation board in the second framework
And be fixed on the second framework, and the second inlet wire copper bar be located at the second framework outside one
The output end of end connection high-frequency isolation transformer, the second inlet wire copper bar is located at the second frame
One end in frame connects the input of the 3rd power veneer；
The outlet copper bar sequentially passes through side in the second framework and the 3rd insulation board and solid
It is scheduled on the second framework, and one end connection that the outlet copper bar is located in the second framework is handed over
The output end of filter inductance is flowed, the outlet copper bar is located at one end connection outside the second framework
Exchange output outside power cell.
8. solid-state transformer according to claim 6, it is characterised in that the second work(
Rate veneer, the 3rd power veneer and the second control veneer pass through multiple hexagonal insulated columns respectively
It is fixed on the side of the 3rd metal substrate；
The high-pressure modular also includes being arranged at the second lower portion, and positioned at the second power
The second air channel installing plate between veneer and the 3rd metal substrate, and positioned at the 3rd power
Install in the 3rd air channel installing plate between veneer and the 3rd metal substrate, second air channel
Plate and the 3rd air channel installing plate use U-shaped structure, and the opening of the two is towards the 3rd gold medal
Category substrate is simultaneously fixed thereon, and the second radiator, the 3rd are provided with the second air channel installing plate
The 3rd radiator is provided with the installing plate of air channel；
Through hole is provided with the installing plate of second air channel at position corresponding with the second radiator,
The heater members of the second power veneer are fixed on the second radiator through the through hole；
Through hole, institute are provided with the 3rd air channel installing plate at position corresponding with the 3rd radiator
The heater members for stating the 3rd power veneer are fixed on the 3rd radiator through the through hole.
9. solid-state transformer according to claim 6, it is characterised in that the height
The first stack bus bar and the second lamination that die block also includes being arranged at the second lower portion are female
Row, the is provided with the 3rd metal substrate at position corresponding with the second power veneer
The second hole is provided with one hole, position corresponding with the 3rd power veneer, described first folds
Layer busbar passes through the first hole and two ends are connected with the second power veneer and capacitor board respectively, institute
State the second stack bus bar through the second hole and two ends respectively with the 3rd power veneer and capacitor board
Connection.
10. the solid-state transformer according to any one of claim 1-9, its feature
It is, the high-frequency isolation transformer uses horizontal type structure, its output end is gone out using copper bar
Line, input use high-voltage line outlet, and full skirt is provided with around copper bar, and the full skirt is adopted
It is made from an insulative material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059576.4A CN107017785B (en) | 2016-01-28 | 2016-01-28 | Solid-state transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059576.4A CN107017785B (en) | 2016-01-28 | 2016-01-28 | Solid-state transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107017785A true CN107017785A (en) | 2017-08-04 |
| CN107017785B CN107017785B (en) | 2019-12-31 |
Family
ID=59438667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610059576.4A Active CN107017785B (en) | 2016-01-28 | 2016-01-28 | Solid-state transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107017785B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108231347A (en) * | 2018-03-26 | 2018-06-29 | 江苏东方四通科技股份有限公司 | A kind of transformer of fast smelting furnace induction power supply and the overall structure of resonant capacitance |
| CN108281263A (en) * | 2018-03-26 | 2018-07-13 | 江苏东方四通科技股份有限公司 | A kind of transformer of bar on-line annealing high frequency induction power supply and the overall structure of resonant capacitance |
| CN108923618A (en) * | 2018-06-26 | 2018-11-30 | 西安西电电力系统有限公司 | Electric power electric transformer |
| CN111277164A (en) * | 2020-03-14 | 2020-06-12 | 宁波锦浪新能源科技股份有限公司 | Split type photovoltaic inverter system who steps up and inverter circuit |
| CN111986883A (en) * | 2020-06-19 | 2020-11-24 | 阳光电源股份有限公司 | Solid-state transformer and preparation method thereof |
| CN113595408A (en) * | 2021-08-20 | 2021-11-02 | 青岛鼎信通讯股份有限公司 | Parallel module unit applied to power electronic transformer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437715A (en) * | 2011-12-21 | 2012-05-02 | 天津华宁电子有限公司 | Mining explosion-proof variable-frequency speed regulation device convenient to maintain |
| CN204231174U (en) * | 2014-08-29 | 2015-03-25 | 国家电网公司 | A kind of IGBT power cell of MMC topological structure |
| CN204290692U (en) * | 2014-12-27 | 2015-04-22 | 株洲南车时代电气股份有限公司 | A kind of power cabinet |
-
2016
- 2016-01-28 CN CN201610059576.4A patent/CN107017785B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437715A (en) * | 2011-12-21 | 2012-05-02 | 天津华宁电子有限公司 | Mining explosion-proof variable-frequency speed regulation device convenient to maintain |
| CN204231174U (en) * | 2014-08-29 | 2015-03-25 | 国家电网公司 | A kind of IGBT power cell of MMC topological structure |
| CN204290692U (en) * | 2014-12-27 | 2015-04-22 | 株洲南车时代电气股份有限公司 | A kind of power cabinet |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108231347A (en) * | 2018-03-26 | 2018-06-29 | 江苏东方四通科技股份有限公司 | A kind of transformer of fast smelting furnace induction power supply and the overall structure of resonant capacitance |
| CN108281263A (en) * | 2018-03-26 | 2018-07-13 | 江苏东方四通科技股份有限公司 | A kind of transformer of bar on-line annealing high frequency induction power supply and the overall structure of resonant capacitance |
| CN108281263B (en) * | 2018-03-26 | 2023-06-02 | 江苏东方四通科技股份有限公司 | Integral structure of transformer and resonant capacitor of bar on-line annealing high-frequency induction power supply |
| CN108231347B (en) * | 2018-03-26 | 2023-06-02 | 江苏东方四通科技股份有限公司 | Integral structure of transformer and resonant capacitor of fast smelting furnace induction power supply |
| CN108923618A (en) * | 2018-06-26 | 2018-11-30 | 西安西电电力系统有限公司 | Electric power electric transformer |
| CN108923618B (en) * | 2018-06-26 | 2019-10-29 | 西安西电电力系统有限公司 | Electric power electric transformer |
| CN111277164A (en) * | 2020-03-14 | 2020-06-12 | 宁波锦浪新能源科技股份有限公司 | Split type photovoltaic inverter system who steps up and inverter circuit |
| CN111986883A (en) * | 2020-06-19 | 2020-11-24 | 阳光电源股份有限公司 | Solid-state transformer and preparation method thereof |
| CN113595408A (en) * | 2021-08-20 | 2021-11-02 | 青岛鼎信通讯股份有限公司 | Parallel module unit applied to power electronic transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107017785B (en) | 2019-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107017785A (en) | A kind of solid-state transformer | |
| CN106026693B (en) | A kind of highly integrated converter module | |
| CN106953502B (en) | Electric energy router | |
| CN105450042B (en) | Three level power converter and its power cell | |
| CN102025261B (en) | Air-cooled converter power module system | |
| CN103354232B (en) | A kind of submodule in parallel for flexible DC power transmission | |
| CN201869082U (en) | Power module system for air cooling current transformer | |
| CN106549584B (en) | power module of wind power converter | |
| CN203416177U (en) | Photovoltaic inverter | |
| CN114006532B (en) | Current transformer | |
| CN204257409U (en) | The capacitance component of frequency converter and frequency converter | |
| CN106130316A (en) | A kind of current transformer module based on perpendicular dress stack bus bar | |
| CN205666751U (en) | Converter module based on erect female row of dress stromatolite | |
| CN206775369U (en) | A kind of frequency converter for optimizing layout | |
| CN108923618B (en) | Electric power electric transformer | |
| CN216414206U (en) | Motor controller and vehicle power system with same | |
| CN210007609U (en) | Modular assembly structure of high-power dc-dc converter | |
| CN205986640U (en) | Compact design liquid cooling contravariant module | |
| CN203415832U (en) | Breaker arrangement structure of photovoltaic DC power distribution cabinet | |
| CN204334294U (en) | Frequency converter | |
| CN113783400A (en) | Power conversion unit | |
| CN202856632U (en) | Photovoltaic grid-connected inverter | |
| CN209217652U (en) | A kind of high intensity common box bus slot | |
| CN203504189U (en) | Compact structure SVG device | |
| CN206758874U (en) | A kind of low-voltage distribution cabinet with plug-in structure |
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 |