CN107911009A - Three level high-voltage high-power water-cooling frequency convertor system - Google Patents
Three level high-voltage high-power water-cooling frequency convertor system Download PDFInfo
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- CN107911009A CN107911009A CN201711497980.0A CN201711497980A CN107911009A CN 107911009 A CN107911009 A CN 107911009A CN 201711497980 A CN201711497980 A CN 201711497980A CN 107911009 A CN107911009 A CN 107911009A
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- 238000009434 installation Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 41
- 229910052710 silicon Inorganic materials 0.000 claims description 41
- 239000010703 silicon Substances 0.000 claims description 41
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- 229910052802 copper Inorganic materials 0.000 claims description 7
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- Inverter Devices (AREA)
Abstract
The present invention relates to a kind of three level high-voltage high-power water-cooling frequency convertor system, including：Digital regulator cubicle, the frequency-charger cabinet based on doube bridge arm power cell, water cycle cooling system cabinet, the component mutually assembles from left to right and the high-power water-cooling frequency converter system of cabinet formation complete set, wherein：Exciting Windings for Transverse Differential Protection cabinet uses 6 impulse commutation of three-phase, realizes the regulatory function to synchronous machine motor rotor volume exciting current；Digital regulator cubicle uses DSP+FPGA structure vector controllers, using 32-bit number model processor as core；Bridge arm parallel connection frequency conversion device cabinet the mode such as in parallel, doube bridge arm power cell modules in parallel or the frequency-charger cabinet parallel connection based on doube bridge arm power cell can expand frequency converter complete machine power using cell module, the topological structure mode of bridge arm parallel connection by doube bridge arm power cell module internal or so bridge arm.The present invention can effectively realize that Fast Installation is safeguarded, frequency converter complete machine realizes 2 times even output power of bigger on the basis of prior art volume.
Description
Technical field
The present invention relates to a kind of frequency converter, and in particular to a kind of three level can expand the change of bridge arm parallel high voltage high-power water-cooling
Frequency device, belongs to electric control structure component technology field.
Background technology
Big-power transducer application technology at present（CN201420283871.4 patents of invention）Comparative maturity, it is most of
It can realize corresponding modularized design, also progressively use is being becoming better and approaching perfection day by day in order to improve the radiating efficiency of power component
Water cooling method, be greatly improved the output power of complete machine, but when output power lifting to a certain extent after, frequency conversion
Device overall structure volume seriously exceedes onsite application environmental demand：The heat dissipation water cooling version of the prior art uses traditional single channel string
It is coupled structure, radiating efficiency is relatively low, loss is big；The single power cell module internal of traditional frequency converter is generally using single bridge arm mould
Formula, three level upper and lower bridge arms of the prior art are the bilaterals for being separately mounted at one piece of cooled plate, each power cell module can only
The frequency conversion function of single bridge arm is realized, so needing 2 sets of frequency converter cabinet bodies to realize complete three-level AC orthogonal rectification, inverse
Become frequency converter function, cause existing frequency changer volume too big；Since the component of a bridge arm is installed on cooled plate two
Side, upper and lower bridge arm circuit are longer, it is necessary to suppress bus overvoltage using over-pressed Absorption Capacitance；Each power component is controlled, touched
The functions such as hair, signal transmission, remote monitoring, power supply are required for individually using one group of optical fiber and power cord, so each power list
First module is externally required for connecting substantial amounts of optical fiber and power cord, causes overall wiring chaotic；In addition to power cell module, other
Component arrangement is chaotic, scattered, is unfavorable for expanding application range；And when using more frequency converter parallel ways, due to power cell
Module each other distance in parallel relatively far away from because the dispersiveness of internal component parameter, it is possible between more frequency converters
Formed and endanger very big circulation, bus overvoltage can not be effectively inhibited, directly affect the security of system；Because lack effective
Salvo is monitored, cooled plate, power component working status can not be detected in real time, and causes power tube to damage again and again.Therefore
It is badly in need of a kind of new designing scheme and solves these technical problems.
The content of the invention
The present invention is exactly to be directed to technical problem existing in the prior art, there is provided a kind of three level can expand bridge arm parallel connection
High-power water-cooling frequency converter, a whole set of frequency convertor system use bridge arm parallel-connection structure, and global design is more compact, can be effective
Reduction system circulation, it is suppressed that the problems such as bus overvoltage, and frequency converter realizes 2-3 times defeated on the basis of existing structure volume
Go out power ascension.By the parallel connection of doube bridge arm power cell module internal or so bridge arm, doube bridge arm power cell modules in parallel etc. no
Same mode, quantity are combined, and flexible and diverse realizes the expansion of a variety of output powers of frequency converter, and adapting to different output power needs
The application scenario asked；Pole is all occupied in space occupancy, Cost comparisons, stable and reliable for performance, output power dilatation etc.
Big performance advantage, further increases the application range of output of products power.
To achieve these goals, technical scheme is as follows, a kind of three level high-voltage high-power water-cooling frequency convertor system,
It is characterised in that it includes：Digital regulator cubicle, the frequency-charger cabinet based on doube bridge arm power cell, water cycle cooling system cabinet；Institute
State digital frequency-charger cabinet of the regulator cubicle 2 based on doube bridge arm power cell, water cycle cooling system cabinet mutually assembles from left to right
And cabinet forms the high-power water-cooling frequency converter system of complete set.
As a modification of the present invention, the digital regulator cubicle 2 includes core control module, auxiliary power supply system
System, interactive system and cabinet, the core control module uses the vector controller of DSP+FPGA structures, with 32 digits
Font processor is core；Realize velocity close-loop control, unity power factor control, variable frequency vector control, current closed-loop control
The functions such as system, fault diagnosis.It is anterior installed in digital adjusting cabinet；The auxiliary power supply system is used to aid in for whole system
Control provides stable operation power supply, installed in cabinet rear portion；The interactive system is operated using touch-screen human-computer dialogue
Interface, installed in cabinet front medial location.
As a modification of the present invention, the frequency-charger cabinet based on doube bridge arm power cell includes cabinet and peace
Three groups of doube bridge arm power cell modules, electric discharge module, sensor module, spare expansion Support Capacitor module in cabinet,
It is anterior that the doube bridge arm power cell module is installed on cabinet；The electric discharge module is bolted on cabinet upper left-hand,
The sensor module is bolted on cabinet upper right, and the spare expansion Support Capacitor module is arranged on doube bridge arm
Above power cell module.Frequency converter based on doube bridge arm power cell employs AFE Active Front End technologies, advanced back-to-back
Three-level AC orthogonal conversion system, ensure converter power supply side stabilization realizes four quadrant running.Wherein power cell module is adopted
With doube bridge arm mode, cooled plate both sides in power cell module are real respectively per side one bridge arm of individually designed three-level converter
The now rectification of single bridge arm, inversion function, use as common frequency-charger cabinet, and three sets of power cell modules realize that one possesses completely
Rectification, the frequency-charger cabinet of inversion function.When needing to extend power converter output, left and right can carry out bridge arm parallel connection, individually real
Existing rectification or inversion function, the structure after optimization can effectively inhibit bus overvoltage, the circulation problem of frequency converter parallel connection, high
Overall performance.
As a modification of the present invention, the doube bridge arm power cell module includes unit housings component and is arranged on
The radiating water cooling board of enclosure interior, power device, two single bridge arm exchange laminated bus, DC support laminated bus and direct current branch
Support capacitance；The radiating water cooling board both sides, the power device of a bridge arm is evenly distributed with per side, and it is female to install a single bridge arm exchange lamination
Line, it is individually designed into a three-level converter bridge arm；It is folded that the DC support laminated bus is installed on two single bridge arm exchanges
Layer busbar top, connects two single bridge arm exchange 3 DC sides of laminated bus, it is female that DC support capacitance is installed on DC support lamination
On line.The doube bridge arm power cell module uses three level major loop topological structures, produces 5 rank output line voltages, and electric current is abnormal
Variability is low, and electromagnetic noise is small, and dynamic and static state performance is excellent, and switching frequency is low, and loss is small, efficient, realizes truly
Active four quadrant running.In doube bridge arm power cell module internal cooled plate both sides, a three-level frequency-converter is separately provided per side
Device bridge arm, realizes rectification, the inversion function of single bridge arm, it is anterior that three sets of doube bridge arm power cell modules are installed on cabinet respectively；Need
When extending power converter output, described doube bridge arm power cell module or so carries out bridge arm parallel connection, single power cell mould
Group realizes a rectification or inversion function, and the radiating water cooling board is interior on the basis of the two-sided installation of the prior art, using new
Three runner parallel ways of type, are greatly reduced water supply flow, stream damage on the basis of cooled plate radiating efficiency is ensured；In runner
Using serration formula structure, coolant is formed wave flowing, further increase heat dissipation effect, effectively reduce water circulation system dress
Machine capacity, saves complete machine cost.
As a modification of the present invention, the water circulation cooling system includes water-wind-heat exchanger, major cycle water pump, swollen
Flatulence capsule, deionization system and monitor control system, the major cycle water pump, ion system, small pump are adopted by system pipeline
Core framework lower part, swelling gasbag, the monitor control system side of being connected by screw bolts are fixedly mounted on bolt, flange connection
Formula is fixedly mounted on core framework top, goes water-wind-heat exchanger to be fixed on outdoor carry out heat exchange.
As a modification of the present invention, frequency convertor system further includes Exciting Windings for Transverse Differential Protection cabinet, and the Exciting Windings for Transverse Differential Protection cabinet is arranged on
The opposite side of digital regulator cubicle.
As a modification of the present invention, the Exciting Windings for Transverse Differential Protection system cabinet includes silicon controlled rectifier module, overvoltage protection mould
Group, resistance-capacitance absorption module, control module and water cooling system；The water cooling system is arranged on the top of cabinet, institute
State control module to be arranged on inside cabinet, the silicon controlled rectifier module, overvoltage protection module, resistance-capacitance absorption module are arranged on control
The top of molding group, the silicon controlled rectifier module, overvoltage protection module, resistance-capacitance absorption module, control module and wind-cooling heat dissipating
System is fixedly mounted on cabinet relevant position by connection modes such as bolt, guide rails.Program Exciting Windings for Transverse Differential Protection system uses three-phase 6
Pulse topology theory, sets quick fuse circuit, overvoltage protection module, resistance-capacitance absorption module, control module, water cooling system
Defencive function is melted in increase soon, and the peak voltage of quick absorption system exchange, reduces di/dt, effectively suppress the wink of switching overvoltage
Between vibration and high frequency electric, avoid overcurrent and damage thyristor, improve thyristor service life, it is reliable to greatly improve system
Property.
As a modification of the present invention, the silicon controlled rectifier module includes module air passage frame, six controllable silicon wafers
Brake tube, six radiator for thyristors, fastp-acting fuse, current sensor and connecting copper bar；Module air passage frame, using exhausted
Edge material, global design cooperatively form a complete heat dissipation circulation loop into three road heat dissipation wind channels with cabinet air passage；Described 1
Branch silicon controlled crystal brake pipe and 1 radiator for thyristors fit together to form a module, and six modules are along module air passage frame
Frame slideway is installed；The fastp-acting fuse is installed on front side of silicon controlled rectifier module；The radiator for thyristors lower part module wind
Increase RC resistance-capacitance absorptions circuit in road frame air passage；The silicon controlled crystal brake pipe, radiator for thyristors, fastp-acting fuse, electric current
Sensor is connected with each other by connecting copper bar, overall to assemble module into a silicon controlled rectifier with Duct design, installed in cabinet
Top.
As a modification of the present invention, the silicon controlled rectifier module uses 6 pulse topological structure of three-phase, the overvoltage
Protection module form overvoltage crowbar by varistor, fastp-acting fuse, the convenient installation maintenance of modularity design, is connected to and is
System exchange side, the peak voltage of quick absorption system exchange, reduces di/dt, and protection is silicon-controlled；The resistance-capacitance absorption module 103
RC absorption circuits are formed by Absorption Capacitance, absorption resistance, silicon controlled rectifier module, the convenient installation of modularity design safeguards to have
Effect suppresses moment vibration and the high frequency electric of switching overvoltage, avoids overcurrent and damages thyristor, improves thyristor and use the longevity
Life.The control module is made of optical fiber control panel, relay, Switching Power Supply, insulating monitor, all electronic component assemblings
On an installing plate, a control module is formed, is controlled by optical fiber control panel and relay, transmission, transmitted by optical fiber,
Receive signal to full digital modulation system cabinet, so as to control, trigger silicon controlled rectifier module system component, the system of greatly improving can
By property.The water cooling system is made of high-power heat-dissipation wind turbine, detection of negative pressure sensor, cabinet fan shroud, air passage；Institute
The wind turbine that cooling fan chooses big heat radiation power is stated, in cabinet fan shroud, there is provided Exciting Windings for Transverse Differential Protection system cabinet is completely born
Pressure heat dissipation circulation；The detection of negative pressure Sensor Design be installed on air passage in, detection blower fan whether normal operation；It is described air-cooled scattered
Hot systems provide a more stable working environment for whole system operation.
When three level high-voltage high-power water-cooling frequency convertor system needs extended power, doube bridge arm power cell mould can be used
Organize internal left and right bridge arm in parallel, doube bridge arm power cell modules in parallel or the frequency-charger cabinet mode based on doube bridge arm power cell
One or more combination.
Relative to the prior art, the invention has the advantages that,
1）Three level can expand base of the frequency-charger cabinet in 1/2 volume of existing structure of bridge arm parallel high voltage high-power water-cooling frequency converter
On plinth as common frequency converter in use, set of excitation winding cabinet, a set of digital regulator cubicle, based on doube bridge arm power cell
Frequency-charger cabinet, a set of water cycle cooling system cabinet, realize complete rectification, the output power of 1.5 times of frequency converter of inversion function carries
Rise.It is more reasonable, compact using upper design in spatial volume, it can effectively realize Fast Installation maintenance, modularization management.
2）Frequency converter is since it is desired that the complete machine power output of extension bigger when using bridge arm parallel way, same structure
Product complete machine can realize the output power lifting with complete 2-3 times of frequency converter；Solve more frequency converters it is in parallel because
The dispersiveness of internal component parameter, and formed and endanger very big circulation, simultaneously effective suppress bus overvoltage, greatly lifting
The security of system.
3）Exciting Windings for Transverse Differential Protection cabinet uses 6 pulse silicon controlled rectifier modular structure of three-phase, completes to synchronous machine motor rotor volume
The regulatory function of exciting current, complete machine have fast molten, temperature, over-voltage protecting function, quickly survey primary voltage and transformation to exchange
Device secondary side voltage is matched, and has complete RC absorption functions simultaneously for silicon-controlled.Greatly improve the reliable of system
Property.
4）Digital regulator cubicle uses the vector controller of DSP+FPGA structures, using 32-bit number model processor as core
The heart；Realize the work(such as velocity close-loop control, unity power factor control, variable frequency vector control, closed-loop current control, fault diagnosis
Energy.
5）Whole scheme is more reasonable, compact using upper design in spatial volume, can effectively realize that Fast Installation is tieed up
Shield, modularization management, greatly reduce material, maintenance, production cost.
Brief description of the drawings
Three level that Fig. 1 is the present invention can expand bridge arm parallel high voltage high-power water-cooling frequency changer schematic diagram.
Fig. 2 is the Exciting Windings for Transverse Differential Protection cabinet schematic diagram of the present invention.
Fig. 3 is the bridge arm parallel connection frequency conversion device cabinet schematic diagram of the present invention.
Fig. 4 is the doube bridge arm power cell module cabinet schematic diagram of the present invention.
Fig. 5 is power cell modular structure schematic diagram；
In figure：1st, Exciting Windings for Transverse Differential Protection cabinet, 2, digital regulator cubicle, 3, bridge arm parallel connection frequency conversion device cabinet, 4 water cycle cooling system cabinets,
101st, silicon controlled rectifier module, 102, overvoltage protection module, 103, resistance-capacitance absorption module, 104, directly control module, 105, air-cooled
Cooling system, 106, Exciting Windings for Transverse Differential Protection cabinet cabinet, 301, power cell module, 302, electric discharge module, 303, sensor module, 304,
Spare expansion Support Capacitor module, 305, bridge arm parallel connection frequency conversion device cabinet cabinet, 1011, module air passage frame, 1012, controllable silicon wafer
Brake tube, 1013, radiator for thyristors, 1014, fastp-acting fuse, 1015, current sensor, 1016, connecting copper bar；3011st, dissipate
Hot water cold plate, 3012, large power all-controlled type power device, 3013, single bridge arm exchange laminated bus, 3014, DC support lamination
Busbar, 3015, DC support capacitance, 3016, monitoring module, 3017, flow-disturbing wind turbine, 3018, unit housings component.
Embodiment：
In order to deepen the understanding of the present invention, the present embodiment is described in detail below in conjunction with the accompanying drawings.
Embodiment 1：Referring to Fig. 1, a kind of three level high-voltage high-power water-cooling frequency convertor system, including：Digital regulator cubicle
2nd, frequency-charger cabinet 3 and water cycle cooling system cabinet 4 based on doube bridge arm power cell；The digital regulator cubicle 2, based on double
Frequency-charger cabinet 3, the water cycle cooling system cabinet 4 of bridge arm power cell mutually assemble from left to right and the height of cabinet formation complete set
High-power water-cooling frequency convertor system is pressed, a whole set of frequency convertor system uses doube bridge arm parallel-connection structure, and whole structural scheme can be more
The application scenario of a variety of output power demands is flexibly adapted to, according to actual needs, Exciting Windings for Transverse Differential Protection cabinet 1 can also be increased, it is described
Exciting Windings for Transverse Differential Protection cabinet 1 is arranged on the side of digital regulator cubicle 2.It is more reasonable, compact using upper design in spatial volume, realize fast
Speed installation is safeguarded, modularization management, and unilateral bridge arm layout can effectively reduce system circulation, it is suppressed that bus overvoltage etc. is asked
Topic.
Embodiment 2：Referring to Fig. 1, as a modification of the present invention, the digital regulator cubicle 2 is controlled comprising core
Module, auxiliary power supply system, interactive system and cabinet, the core control module use the vector of DSP+FPGA structures
Controller, using 32-bit number model processor as core；Realize velocity close-loop control, unity power factor control, variable frequency vector
The functions such as control, closed-loop current control, fault diagnosis.It is anterior installed in digital adjusting cabinet；The auxiliary power supply system is used
In the operation power supply that stabilization is provided for whole system auxiliary control, installed in cabinet rear portion；The interactive system is using tactile
Screen human-computer dialogue operation interface is touched, installed in cabinet front medial location.
Embodiment 3：Referring to Fig. 1, Fig. 3, the frequency-charger cabinet 3 based on doube bridge arm power cell include cabinet 305 with
And three groups of doube bridge arm power cell modules 301 in cabinet, electric discharge module 302, sensor module 303, spare expansion
Support Capacitor module 304, it is anterior that the doube bridge arm power cell module 301 is installed on cabinet；The electric discharge module 302 passes through spiral shell
Bolt is fixed on cabinet upper left-hand, and the sensor module 303 is bolted on cabinet upper right, the spare expansion
Support Capacitor module 204 is arranged on the top of doube bridge arm power cell module 301.Frequency converter based on doube bridge arm power cell uses
AFE Active Front End technologies, advanced three-level AC orthogonal conversion system back-to-back, ensure the realization that converter power supply side is stablized
Four quadrant running.Wherein power cell module uses doube bridge arm mode, and cooled plate both sides in power cell module, individually set per side
One bridge arm of three-level converter is counted, rectification, the inversion function of single bridge arm is realized respectively, is used as common frequency-charger cabinet, three
Set power cell module realizes that one possesses complete rectification, the frequency-charger cabinet of inversion function.Need to extend power converter output
When, left and right sides bridge arm can carry out bridge arm parallel connection, rectification or inversion function be implemented separately, the structure after optimization can be effectively
Suppress bus overvoltage, the circulation problem of frequency converter parallel connection, high overall performance.
Referring to Fig. 4, the doube bridge arm power cell module 301 includes radiating water cooling board 3011, large power all-controlled type power
Device 3012, single bridge arm exchange laminated bus 3013, DC support laminated bus 3014, DC support capacitance 3015, intelligence prison
Module 3016, flow-disturbing wind turbine 3017, unit housings component 3018 are controlled, the radiating water cooling board 3011 is interior in the two-sided peace of the prior art
On the basis of dress, using three new runner parallel ways, confession is greatly reduced on the basis of cooled plate radiating efficiency is ensured
Water flow, stream damage；Serration formula structure is used in runner, coolant is formed wave flowing, further increases heat dissipation effect, have
Effect reduces water circulation system installed capacity, saves complete machine cost.The radiating water cooling board both sides, the work(of a bridge arm is evenly distributed with per side
Rate device 3012, installs a single bridge arm exchange laminated bus, individually designed into a three-level converter bridge arm；The direct current
Support laminated bus 3014 to be installed on two single 3013 tops of bridge arm exchange laminated bus, it is female to connect two single bridge arm exchange laminations
3013 DC side of line, DC support capacitance 3015 are installed on DC support laminated bus 3014.The doube bridge arm power cell
Module 301 uses three level major loop topological structures, produces 5 rank output line voltages, and current distortion rate is low, and electromagnetic noise is small, moves
Static properties is excellent, and switching frequency is low, and loss is small, efficient, realizes active four quadrant running truly.In doube bridge
Arm power cell module internal cooled plate both sides, a three-level converter bridge arm is separately provided per side, realizes single bridge arm respectively
Rectification, inversion function, it is anterior that three sets of doube bridge arm power cell modules are installed on cabinet；Need to extend power converter output
When, described doube bridge arm power cell module or so carries out bridge arm parallel connection, and single power cell module realizes a rectification or inverse
Become function.Referring to Fig. 2, in the radiating water cooling board 3011 on the basis of the two-sided installation of the prior art, using three new streams
Road parallel way, is greatly reduced water supply flow, stream damage on the basis of cooled plate radiating efficiency is ensured；Serration is used in runner
Formula structure, makes coolant form wave flowing, further increases heat dissipation effect, effectively reduce water circulation system installed capacity,
Save complete machine cost.
Embodiment 4：Referring to Fig. 1, as a modification of the present invention, the water circulation cooling system 4 includes water-wind-heat and exchanges
Device, major cycle water pump, swelling gasbag, deionization system and monitor control system, the major cycle water pump, ion system, moisturizing
Pump is fixedly mounted on core framework lower part, swelling gasbag, monitoring and controlling system by system pipeline using bolt, flange connection
System is connected by screw bolts mode and is fixedly mounted on core framework top, goes water-wind-heat exchanger to be fixed on outdoor carry out heat exchange.
Embodiment 5 is referring to Fig. 1, Fig. 2, and as a modification of the present invention, the Exciting Windings for Transverse Differential Protection system cabinet 1 includes silicon-controlled
Rectification module 101, overvoltage protection module 102, resistance-capacitance absorption module 103, control module 104 and water cooling system 105；Institute
The top that water cooling system 105 is arranged on cabinet 106 is stated, the control module 104 is arranged on inside cabinet, described silicon-controlled
Rectification module 101, overvoltage protection module 102, resistance-capacitance absorption module 103 are arranged on the top of control module 104, described silicon-controlled
Rectification module 101, overvoltage protection module 102, resistance-capacitance absorption module 103, control module 104 and water cooling system 105 pass through
The connection modes such as bolt, guide rail are fixedly mounted on cabinet relevant position.Program Exciting Windings for Transverse Differential Protection system is using 6 pulse of three-phase topology
Principle, sets quick fuse circuit, overvoltage protection module, resistance-capacitance absorption module, control module, water cooling system increase fast molten
Defencive function, the peak voltage of quick absorption system exchange, reduces di/dt, effectively suppress switching overvoltage moment vibration and
High frequency electric, avoids overcurrent and damages thyristor, improves thyristor service life, greatly improves system reliability.It is described can
Control silicon rectifier module 101 and use 6 pulse topological structure of three-phase, the overvoltage protection module 102 is by varistor, fastp-acting fuse
Overvoltage crowbar is formed, the convenient installation of modularity design is safeguarded, is connected to system exchange side, the point of quick absorption system exchange
Peak voltage, reduces di/dt, and protection is silicon-controlled；The resistance-capacitance absorption module 103 is by Absorption Capacitance, absorption resistance, silicon controlled rectifier
Module forms RC absorption circuits, and modularity designs convenient installation and safeguards, can effectively suppress moment vibration and the height of switching overvoltage
Frequency electric current, avoids overcurrent and damages thyristor, improves thyristor service life.It is described control module 104 by optical fiber control panel,
Relay, Switching Power Supply, insulating monitor composition, all electronic components are assembled on an installing plate, form a control
Module, is controlled, transmission by optical fiber control panel and relay, is transmitted by optical fiber, is received signal to full digital modulation system cabinet,
So as to control, trigger silicon controlled rectifier module system component, system reliability is greatly improved.The water cooling system 105
It is made of high-power heat-dissipation wind turbine, detection of negative pressure sensor, cabinet fan shroud, air passage；The cooling fan chooses big heat dissipation work(
The wind turbine of rate, in cabinet fan shroud, there is provided the complete negative pressure heat dissipation circulation of Exciting Windings for Transverse Differential Protection system cabinet；The detection of negative pressure
Sensor Design be installed on air passage in, detection blower fan whether normal operation；The water cooling system 105 is run for whole system
One more stable working environment is provided.
Embodiment 6 is referring to Fig. 1, Fig. 5, and as a modification of the present invention, the silicon controlled rectifier module 101 includes module
The silicon controlled crystal brake pipe 1012, six of air passage frame 1011, six radiator for thyristors 1013, fastp-acting fuse 1014, electric current pass
Sensor 1015 and connecting copper bar 1016；Module air passage frame 1011, using insulating materials, global design is into three road radiation airs
Road, a complete heat dissipation circulation loop is cooperatively formed with cabinet air passage；1 silicon controlled crystal brake pipe 1012 and 1 it is controllable
Silicon radiator 1013 fits together to form a module, and six modules are installed along 1011 slideway of module air passage frame；It is described
Fastp-acting fuse 1014 is installed on the front side of silicon controlled rectifier module 101；The 1013 lower part module air passage frame of radiator for thyristors
Increase RC resistance-capacitance absorptions circuit in 1011 air passage of frame；The silicon controlled crystal brake pipe 1012, radiator for thyristors 1013, quick fuse
Device 1014, current sensor 1015 are connected with each other by connecting copper bar 1016, it is overall with Duct design into a silicon controlled rectifier
Module is assembled, installed in cabinet top.
When three level high-voltage high-power water-cooling frequency convertor system needs extended power, doube bridge arm power cell mould can be used
The group internal parallel connection of left and right bridge arm, doube bridge arm power cell modules in parallel or frequency-charger cabinet parallel connection based on doube bridge arm power cell etc.
One or more combinations of formula.
From the above mentioned as it can be seen that three level high-voltage high-power water-cooling frequency convertor system uses doube bridge arm parallel-connection structure, overall knot
Structure scheme can the more flexible application scenario for adapting to a variety of output power demands, utilize upper design more adduction in spatial volume
Manage, be compact, realizing Fast Installation maintenance, modularization management, unilateral bridge arm layout can effectively reduce system circulation, it is suppressed that
The problems such as bus overvoltage.Pass through the parallel connection of doube bridge arm power cell module internal or so bridge arm, doube bridge arm power cell modules in parallel
Or different modes, the quantity such as frequency-charger cabinet parallel connection based on doube bridge arm power cell are combined, flexible and diverse realizes frequency conversion
The expansion of a variety of output powers of device, adapts to the application scenario of different output power demand.No matter in space occupancy, cost pair
Great performance advantage is all occupied than, stable and reliable for performance, output power dilatation etc., further increases output of products
The application range of power, expands product applications.
At least one in embodiment 2,3,4,5,6 technical characteristics can also be combined shape by the present invention with embodiment 1
The embodiment of Cheng Xin.
It should be noted that above-described embodiment, is not used for limiting protection scope of the present invention, in above-mentioned technical proposal
On the basis of made equivalents or replacement each fall within the scope that the claims in the present invention are protected.
Claims (10)
- A kind of 1. three level high-voltage high-power water-cooling frequency convertor system, it is characterised in that including：Digital regulator cubicle, based on double Frequency-charger cabinet, the water cycle cooling system cabinet of bridge arm power cell；The digital regulator cubicle, based on doube bridge arm power cell Mutually assembling and the high-power water cooling frequency conversion of cabinet formation complete set from left to right of frequency-charger cabinet, water cycle cooling system cabinet Device system.
- 2. three level high-voltage high-power water-cooling frequency convertor system according to claim 1, it is characterised in that described is total Regulation cabinet includes core control module, auxiliary power supply system, interactive system and cabinet, and the core control module is adopted With the vector controller of DSP+FPGA structures, using 32-bit number model processor as core；Before digital adjusting cabinet Portion；The auxiliary power supply system is used for the operation power supply that stabilization is provided for whole system auxiliary control, installed in cabinet rear portion；Institute State interactive system and use touch-screen human-computer dialogue operation interface, installed in cabinet front medial location.
- 3. three level high-voltage high-power water-cooling frequency convertor system according to claim 1, it is characterised in that it is described based on The frequency-charger cabinet of doube bridge arm power cell includes cabinet and three groups of doube bridge arm power cell modules in cabinet, electric discharge Module, sensor module, spare expansion Support Capacitor module, it is anterior that the doube bridge arm power cell module is installed on cabinet；Institute State electric discharge module and be bolted on cabinet upper left-hand, the sensor module is bolted on the cabinet top right side Side, the spare expansion Support Capacitor module are arranged on above doube bridge arm power cell module.
- 4. three level high-voltage high-power water-cooling frequency convertor system according to claim 3, the doube bridge arm power cell Module includes unit housings component and sets radiating water cooling board, power device, two single bridge arms inside housings to exchange and fold Layer busbar, DC support laminated bus and DC support capacitance；The radiating water cooling board both sides, the work(of a bridge arm is evenly distributed with per side Rate device, installs a single bridge arm exchange laminated bus, individually designed into a three-level converter bridge arm；The DC support Laminated bus is installed on two single bridge arm exchange laminated bus tops, connects two single bridge arm exchange laminated bus DC sides, directly Support Capacitor 5 is flowed to be installed on DC support laminated bus.
- 5. three level according to claim 1 can expand bridge arm parallel high voltage high-power water-cooling frequency converter, it is characterised in that： The water cycle cooling system cabinet includes water-wind-heat exchanger, major cycle water pump, swelling gasbag, deionization system and monitoring control System processed, the major cycle water pump, ion system, small pump fix peace by system pipeline using bolt, flange connection Mounted in core framework lower part, swelling gasbag, monitor control system are connected by screw bolts mode and are fixedly mounted on core framework top, Water-wind-heat exchanger is fixed on outdoor carry out heat exchange.
- 6. three level high-voltage high-power water-cooling frequency convertor system according to claim 1, it is characterised in that further include excitation Winding cabinet, the Exciting Windings for Transverse Differential Protection cabinet are arranged on the opposite side of digital regulator cubicle.
- 7. three level high-voltage high-power water-cooling frequency convertor system according to claim 6, it is characterised in that the excitation around Group system cabinet includes silicon controlled rectifier module, overvoltage protection module, resistance-capacitance absorption module, control module and wind-cooling heat dissipating system System；The water cooling system is arranged on the top of cabinet, and the control module is arranged on inside cabinet, the silicon controlled rectifier Module, overvoltage protection module, resistance-capacitance absorption module are arranged on the top of control module, and the silicon controlled rectifier module, overvoltage are protected Shield module, resistance-capacitance absorption module, control module and water cooling system are fixedly mounted on cabinet by connection modes such as bolt, guide rails Body relevant position.
- 8. three level high-voltage high-power water-cooling frequency convertor system according to claim 7, it is characterised in that described silicon-controlled Rectification module includes module air passage frame, six silicon controlled crystal brake pipes, six radiator for thyristors, fastp-acting fuse, electric current and passes Sensor and connecting copper bar；Module air passage frame, using insulating materials, global design is into three road heat dissipation wind channels, with cabinet wind Road cooperatively forms a complete heat dissipation circulation loop；1 silicon controlled crystal brake pipe and 1 radiator for thyristors are assembled in one Rise and form a module, six modules are installed along module air passage frame runner；The fastp-acting fuse is installed on silicon-controlled whole Flow on front side of module；Increase RC resistance-capacitance absorptions circuit in the frame air passage of the radiator for thyristors lower part module air passage；It is described controllable Silicon wafer brake tube, radiator for thyristors, fastp-acting fuse, current sensor are connected with each other by connecting copper bar, overall to be set with air passage A silicon controlled rectifier assembling module is counted into, installed in cabinet top.
- 9. three level high-voltage high-power water-cooling frequency convertor system according to claim 7, it is characterised in that described silicon-controlled Rectification module uses 6 pulse topological structure of three-phase, and the overvoltage protection module forms overvoltage guarantor by varistor, fastp-acting fuse Protection circuit, the convenient installation of modularity design are safeguarded, are connected to system exchange side, the control module is by optical fiber control panel, relay Device, Switching Power Supply, insulating monitor composition, all electronic components are assembled on an installing plate, form a control module, The water cooling system is made of high-power heat-dissipation wind turbine, detection of negative pressure sensor, cabinet fan shroud, air passage；It is described to dissipate Air-heater chooses the wind turbine of big heat radiation power, in cabinet fan shroud, there is provided the complete negative pressure of Exciting Windings for Transverse Differential Protection system cabinet dissipates Thermal cycle；The detection of negative pressure Sensor Design be installed on air passage in, detection blower fan whether normal operation；The wind-cooling heat dissipating system Unite and provide a more stable working environment for whole system operation.
- 10. three level high-voltage high-power water-cooling frequency convertor system according to claim 9, it is characterised in that three electricity Flat high-power water-cooling frequency converter system is using the parallel connection of doube bridge arm power cell module internal or so bridge arm, doube bridge arm power list One or more combinations of first modules in parallel or frequency-charger cabinet mode based on doube bridge arm power cell.
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| CN201711497980.0A CN107911009A (en) | 2017-12-30 | 2017-12-30 | Three level high-voltage high-power water-cooling frequency convertor system |
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| CN201711497980.0A CN107911009A (en) | 2017-12-30 | 2017-12-30 | Three level high-voltage high-power water-cooling frequency convertor system |
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| CN107911009A true CN107911009A (en) | 2018-04-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109194156A (en) * | 2018-11-06 | 2019-01-11 | 北京金自天正智能控制股份有限公司 | A kind of compact is single-phase or three phase excitation power cell |
| CN109474188A (en) * | 2018-12-29 | 2019-03-15 | 徐州中矿大传动与自动化有限公司 | Three level high-voltage high-power water-cooling frequency convertor system |
| CN112423562A (en) * | 2020-12-03 | 2021-02-26 | 青岛中加特电气股份有限公司 | Frequency conversion cabinet for electric fracturing truck pump |
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Address after: 221116 No. second Zhujianglu Road Industrial Park, Xuzhou high tech Zone, Jiangsu 7 Applicant after: Xuzhou China Mining Drives & Automation Co., Ltd. Address before: 221116 Kunlun road 9006-1, Copper Mt. Economic Development Zone, Xuzhou, Jiangsu Applicant before: Xuzhou China Mining Drives & Automation Co., Ltd. |