CN106411143A - Mine explosionproof high-voltage combined frequency converter core and frequency converter - Google Patents
Mine explosionproof high-voltage combined frequency converter core and frequency converter Download PDFInfo
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- CN106411143A CN106411143A CN201610468082.1A CN201610468082A CN106411143A CN 106411143 A CN106411143 A CN 106411143A CN 201610468082 A CN201610468082 A CN 201610468082A CN 106411143 A CN106411143 A CN 106411143A
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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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
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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
- 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
- H05K7/20927—Liquid coolant without phase change
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Abstract
The invention relates to a mine explosionproof high-voltage combined frequency converter core. The mine explosionproof high-voltage combined frequency converter core is characterized by comprising a rectifier power stack, three inverter power stacks and a water circulation heat dissipation system, wherein the three inverter power stacks are arranged between the rectifier power stack and the water circulation heat dissipation system. In the mine explosionproof high-voltage combined frequency converter, triple functions of rectification, inversion and AC-DC-AC frequency conversion control can be achieved by the rectifier power stack matched with the three inverter power stacks and the water circulation heat dissipation system under the same space volume on the basis that the heat dissipation demand of a system is satisfied. In the technical scheme, the rectifier power stack, the three inverter power stacks and the water circulation heat dissipation system can be independently used for achieving functions of rectification, inversion and heat dissipation, and core module productization is achieved; and the mine explosionproof high-voltage combined frequency converter core is more reasonable and compact in design of the space volume utilization, and rapid installation and maintenance and the power stack module core can be effectively achieved.
Description
Technical field
The present invention relates to a kind of frequency converter, and in particular to a kind of mining flame-proof high-voltage combined frequency changer movement collection frequency converter, belongs to electric control structure component technology field.
Background technology
Frequency converter is application converter technique and microelectric technique, controls the electric control appliance of ac motor by changing motor working power Frequency Patterns.Frequency converter is mainly by rectification（AC-DC）, filtering, inversion（Direct current becomes exchange）, brake unit, driver element, the composition such as detector unit microprocessing unit, frequency converter close to the inner portion IGBT cut-off the voltage to adjust out-put supply and frequency, to there is provided its required supply voltage according to being actually needed of motor, and then to reach the purpose of energy-conservation, speed governing；Increasingly mature due to converter technique, converter technique is being also deep into all trades and professions, but the frequency converter generally existing problems with market：The driving of typical high power drag conveyor is based on speed regulation type hydrodynamic coupler, it is possible to achieve soft start, but circuit system is complicated, maintenance workload is big, maintenance cost is high, and cannot work long hours in the low-speed mode, limits development and the application of frequency converter to a certain extent.Therefore, a kind of new scheme of exigence solves this technical problem.
Content of the invention
The present invention is exactly directed to technical problem present in prior art, there is provided a kind of mining flame-proof high-voltage combined frequency changer movement, this overall system design is ingenious, structure is compacter, eliminates speed regulation type hydrodynamic coupler, to wheel connection, improve the mechanical efficiency of equipment using directly.
To achieve these goals, technical scheme is as follows, a kind of mining flame-proof high-voltage combined frequency changer movement, it is characterized in that, described mining flame-proof high-voltage combined frequency changer movement includes a set of rectifier power storehouse, three sets of inverter power storehouses and a set of water circulation cooling system, and described three sets of inverter power storehouses are arranged between rectifier power storehouse and water circulation cooling system.
As a modification of the present invention, described rectifier power storehouse includes power cell, low voltage control unit, water-wind heat-exchange system unit, DC side lamination is noninductive bus and core framework, described power cell DC side is noninductive with DC side lamination, and bus is connected, and described low voltage control unit is that system provides logic control；Described water-wind heat-exchange system unit sets up auxiliary radiation circulation system for system, and described power cell, low voltage control unit, water-wind heat-exchange system unit, DC side lamination is noninductive, and bus is arranged on core framework；Wherein power cell adopts 12 pulse wave diode rectifier bridge cascaded structures；Described power cell internal installs one piece of cooled plate, all arrange diode power module in cooled plate both sides, exchange laminated bus are installed on power model, rectifier power storehouse 12 pulse wave diode rectifier bridge cascaded structure power cell AC connects the three-phase alternating voltage of the phase-shifting transformer output with 30 ° of phase differences, DC side lamination is noninductive bus just, zero, negative three-phase pass through DC bus-bar voltage filter unit in busbar connection inverter power storehouse.
As a modification of the present invention, described power cell, low voltage control unit, water-wind heat-exchange system unit, DC side lamination is noninductive, and bus is fixedly mounted on core framework relevant position by connected modes such as bolt, guide rails.Described core framework adopts C, described water-wind heat-exchange system unit is connected with external water circulation system, when forming the frequency converter movement with rectification, inversion function with inverter storehouse, the inside heat energy displacement that other electronic devices and components distribute in addition to power component is taken out of outside housing to water circulation system by water-wind heat-exchange system unit through blower fan internal circulating load, running for whole system provides a more stable working environment；Described low voltage control unit by master control borad, rise pressing plate, transformer, PLC and relay form, and are rectifier power storehouse and whole frequency convertor system provides stable working power and system automatic logic control function.
Described water-wind heat-exchange system unit is connected with external water circulation system, when forming the frequency converter movement with rectification, inversion function with inverter storehouse, the inside heat energy displacement that other electronic devices and components distribute in addition to power component is taken out of outside housing to water circulation system by water-wind heat-exchange system unit through blower fan internal circulating load, running for whole system provides a more stable working environment.
As a modification of the present invention, described inverter power storehouse includes three sets of power cells, a set of output filter unit, a set of DC bus-bar voltage filter unit, a set of low voltage control unit, core framework, one group of outside water inlet pipe and water outlet pipe providing heat dissipation circulating system, wherein：Described three sets of power cell DC sides are connected with DC bus-bar voltage filter unit, AC connects external loading equipment through output filter unit, described low voltage control unit provides logic control for system, the described outside water inlet pipe and water outlet pipe providing heat dissipation circulating system connects power cell and output filter unit, and described three sets of power cells, output filter unit, DC bus-bar voltage filter unit, low voltage control unit, the outside water inlet pipe and water outlet pipe providing heat dissipation circulating system are arranged on core framework.Described three sets of power cells are uniformly arranged on front side of core framework, described output filter unit is arranged on the downside of core framework, described DC bus-bar voltage filter unit is arranged on rear side of core framework, described low voltage control unit is arranged on core framework top, the described outside water inlet pipe and water outlet pipe providing heat dissipation circulating system is arranged on core framework lower front position, and described three sets of power cells adopt the cellular construction of design based on diode clamp formula three-level topology principle；Described power cell internal installs one piece of cooled plate, in uniform four IGBT in cooled plate both sides, two diode power modules, installs exchange laminated bus on power model, and bottom AC connects exchange turnover bus.
As a modification of the present invention, described three sets of power cells exchange laminated bus DC side directly with DC bus-bar voltage filter unit dc bus just, zero, negative terminal is connected, the unfavorable factor such as electromagnetic interference that the reason such as secondary connection of minimizing causes；Described power cell exchange turnover bus outlet side connects external loading through output filter unit provides safe and stable, controlled exchange output；Described three sets of power cells, output filter unit, DC bus-bar voltage filter unit, low voltage control unit, the outside water inlet pipe and water outlet pipe providing heat dissipation circulating system are fixedly mounted on core framework relevant position by bolt, guide rail connected mode.Described cooled plate is waterproof sealing structure, external water circulation system coolant carries out heat exchange through cooled plate and IGBT, diode power devices and reaches power device radiating requirements, described DC bus-bar voltage filter unit is made up of low inductance direct current laminated bus, resistance and electric capacity, and electric capacity is divided into two groups by multiple electric capacity parallel connections and is connected to direct current laminated bus positive zero, negative zero side；Two groups of resistance are connected to direct current laminated bus positive zero, negative zero side.
As a modification of the present invention, described water circulation cooling system includes core framework and is arranged on water-water heat exchanger within core framework, major cycle water pump, swelling gasbag, deionization system and monitor control system, described water-water heat exchanger is arranged on the side of core framework, described major cycle water pump is arranged on core framework bottom, and described swelling gasbag and deionization system are installed on rear side of core framework.Water distribution water return pipeline in water water inlet end connection in described water-water heat exchanger, and the heat energy displacement that cooling medium in system is taken out of is dispersed in the air to outside cooling recirculation system, Nei Shui water side connects major cycle water feeding of water pump end；In the internal connection in described major cycle water pump water outlet end, water distribution inlet pipeline is that power component provides cooling；Described swelling gasbag sets up voltage-stabilizing system for system, and described deionization system is parallel to the main circulation loop between water-water heat exchanger, major cycle water pump, and described monitor control system automatically controls to water-cooling system.
As a modification of the present invention, described water-water heat exchanger, major cycle water pump, swelling gasbag, deionization system are all fixedly mounted on the relevant position of core framework by system pipeline mode with bolts, described water-water heat exchanger internally connects main circulation pump, the outside cooling recirculation system of external connection, in cooling medium, heat is replaced outside cooling recirculation system through water-water heat exchanger and is dispersed in the air.
As a modification of the present invention, described high pressure combined frequency changer movement adopts phase shift three-phase alternating current to input, and turns direct current through 12 pulse wave diode rectification bridge power unit exchanges；Described frequency converter movement adopts " multi-inverter power storehouse common DC bus " structure, mutually dc bus relatively is connected in series using busbar, diode clamp formula three-level topology principal power unit through being connected with DC bus-bar voltage filter unit is realized direct current input and is delivered stream output, and three sets of inverter power storehouse inverter power unit outputs connect load by the output filter that inside is arranged.
As a modification of the present invention, described a set of rectifier power storehouse, three sets of inverter power storehouse dc bus using n- just, zero-zero, negative-to bear " multi-inverter power storehouse common DC bus " structure that corresponding two-by-two busbar is connected in series to form.
A kind of mining flame-proof high-voltage combined frequency changer is it is characterised in that include：Integral explosion-proof combined frequency changer housing；
Mine flameproof and intrinsic safety type high pressure combined frequency changer movement as described in claim 1 to 6 is installed in described explosion-proof combined frequency changer housing.
As a modification of the present invention, described Integral explosion-proof combined frequency changer housing adopts straight barrel type structure, opens the door in the left and right sides；The described explosion-proof combined frequency changer enclosure interior mobile extensible track of setting and supporting dolly, for installing fixing mine flameproof and intrinsic safety type high pressure combined frequency changer movement；About described explosion-proof combined frequency changer housing, side door plate setting main loop cabling quick connector, explosion insulation connecting line cavity, intrinsic safety man-machine interface, control button knob, running status show；Design intake-outlet on rear side of described explosion-proof combined frequency changer housing, cooling outside water circulation cooling system is provided.
With respect to prior art, advantages of the present invention is as follows：
1）Under the same spatial volume of mining flame-proof high-voltage combined frequency changer, a set of rectifier power storehouse coordinates three sets of inverter power storehouses and a set of water circulation cooling system, can realize one and drag three commutation inversion ac-dc-ac inverter control functions on the basis of meeting system radiating demand；Single rectifier power storehouse in this technical scheme, three sets of inverter power storehouses, water circulation cooling systems all can realization has respectively rectification in itself, inversion, heat sinking function, core module commercialization；Spatial volume using on design more reasonable, compact, can effectively realize Fast Installation safeguard, power stack module movement；
2）Rectifier power storehouse 12 pulse wave diode rectifier bridge cascaded structure, the output of AC external connection phase-shifting transformer has the three-phase alternating voltage of 30 ° of phase differences, this structure not only brings up to 12 pulse waves rectification circuit umber of pulse by 6 pulse waves, and significantly reduces 5 times, the interference to electrical network for 7 subharmonic currents；, in natural commutation point commutation, the power factor of system is of a relatively high, has saved electric energy for diode rectifier circuit；Because dc-link capacitance capacity is larger, it is effectively reduced bus ripple electric current content, reduce further rectification side harmonic content.In addition, the control that this structure balances to upper and lower DC bus-bar voltage has good dynamic response, provide stable level for three-level inverter, improve the speed adjusting performance of frequency converter, circuit structure is simple, has the advantages that low cost and high reliability simultaneously；
4）Inverter power storehouse adopts diode clamp formula three-level topology, " multi-inverter power storehouse common DC bus " structure, and inverter output voltage du/dt substantially reduces, and equivalent switching frequency doubles compared to two level（From the loss of power device average switch and output voltage aberration rate angle）, reduce power device switch stress, reduce the chronic damage to motor simultaneously.
5）Water circulation cooling system meet the various operating condition that under various environmental conditions adapt to cooled device is implemented separately when long-term stable operation, and carried out the components and parts such as big quantity sensor, valve, tank body and simplified；For example surge tank, pressurized tank realize steady pressure of system with simple swelling gasbag, small volume and effect is good, internal water system system cooling medium no too lossy in the case of No leakage, remove water charging system of the prior art, improve space availability ratio further, make overall structure compacter, whole volume only has the volume of 1/4 to the 1/3 of prior art；Still retain deionization system simultaneously, purify the optimizations such as the free electron that may separate out in cooling medium to meet.
6）Whole scheme spatial volume using on design more reasonable, compact, can effectively realize Fast Installation safeguard, power stack module movement, greatly reduce cost.
Brief description
Fig. 1 is high pressure combined frequency changer movement overall structure diagram of the present invention.
Fig. 2 is the rectifier power stack architecture schematic diagram of the present invention.
Fig. 3 is the inverter power stack architecture schematic diagram of the present invention.
Fig. 4 is the water circulation cooling system structure schematic diagram of the present invention.
In figure：1st, rectifier power storehouse, 2nd, inverter power storehouse, 3rd, water circulation cooling system, 101st, power cell, 102, low voltage control unit, 103, water-wind heat-exchange system unit, 104th, the noninductive bus of DC side lamination, 105th, core framework, 201, power cell, 202, output filter unit, 203rd, DC bus-bar voltage filter unit, 204th, low voltage control unit, 205, core framework, 301, water-water heat exchanger, 302nd, major cycle water pump, 303rd, swelling gasbag, 304 deionization system, 305, core framework.
Specific embodiment
In order to deepen the understanding of the present invention and understanding, the invention will be further described with reference to the accompanying drawings and detailed description and introduces.
Embodiment 1：Referring to Fig. 1, a kind of mining flame-proof high-voltage combined frequency changer movement, described mining flame-proof high-voltage combined frequency changer movement includes a set of rectifier power storehouse 1, three sets of inverter power storehouses 2 and a set of water circulation cooling system 3, described three sets of inverter power storehouses 2 are arranged on 3 between rectifier power storehouse 1 and water circulation cooling system, this technical scheme adopt n- just, zero-zero, negative-to bear " multi-inverter power storehouse common DC bus " structure that corresponding two-by-two busbar is connected in series to form, it is more reasonable that mining flame-proof high-voltage combined frequency changer movement designs on same spatial volume, compact.
Embodiment 2：Referring to Fig. 2, as a modification of the present invention, described rectifier power storehouse includes power cell 101, low voltage control unit 102, water-wind heat-exchange system unit 103, DC side lamination is noninductive bus 104 and core framework 105, described power cell 102 is arranged on the front side of core framework 105, and described low voltage control unit 102 is arranged on the right side of core framework 105；Described water-wind heat-exchange system unit 103 is arranged on the downside of core framework 105, and described DC side lamination is noninductive, and bus is arranged on core framework top.Wherein power cell 101 adopts 12 pulse wave diode rectifier bridge cascaded structures；Described power cell 101 is internal to install one piece of cooled plate, all arrange diode power module in cooled plate both sides, exchange laminated bus are installed on power model, rectifier power storehouse 12 pulse wave diode rectifier bridge cascaded structure power cell AC connects the three-phase alternating voltage of the phase-shifting transformer output with 30 ° of phase differences, DC side lamination is noninductive bus just, zero, negative three-phase pass through DC bus-bar voltage filter unit in busbar connection inverter power storehouse.This structure not only brings up to 12 pulse waves rectification circuit umber of pulse by 6 pulse waves, and significantly reduces 5 times, the interference to electrical network for 7 subharmonic currents；, in natural commutation point commutation, the power factor of system is of a relatively high, has saved electric energy for diode rectifier circuit；Because dc-link capacitance capacity is larger, it is effectively reduced bus ripple electric current content, reduce further rectification side harmonic content.In addition, the control that this structure balances to upper and lower DC bus-bar voltage has good dynamic response, provide stable level for three-level inverter, improve the speed adjusting performance of frequency converter, circuit structure is simple, has the advantages that low cost and high reliability simultaneously.
Embodiment 3：Referring to Fig. 2, as a modification of the present invention, described power cell 101, low voltage control unit 102, water-wind heat-exchange system unit 103, DC side lamination is noninductive, and bus 104 is fixedly mounted on core framework relevant position by connected modes such as bolt, guide rails, takes into full account the insulating properties such as high-voltage electrical apparatus gap, creep age distance.
Embodiment 4：Referring to Fig. 3, as a modification of the present invention, described inverter power storehouse includes three sets of power cells 201, a set of output filter unit 202, a set of DC bus-bar voltage filter unit 203, the outside water inlet pipe and water outlet pipe providing heat dissipation circulating system of 205, one group of 204, core framework of a set of low voltage control unit, wherein：Described three sets of power cells 201 are uniformly arranged on front side of core framework 205, described output filter unit 202 is arranged on the downside of core framework 205, described DC bus-bar voltage filter unit 203 is arranged on rear side of core framework 205, described low voltage control unit 204 is arranged on core framework 205 top, the described outside water inlet pipe and water outlet pipe providing heat dissipation circulating system is arranged on core framework 205 lower front position, and described three sets of power cells 201 adopt the cellular construction of design based on diode clamp formula three-level topology principle；Described power cell internal installs one piece of cooled plate, in uniform four IGBT in cooled plate both sides, two diode power modules, installs exchange laminated bus on power model, and bottom AC connects exchange turnover bus.In this technical scheme, power cell 205 adopts diode clamp formula three-level topology, and inverter output voltage du/dt substantially reduces, and equivalent switching frequency doubles compared to two level（From the loss of power device average switch and output voltage aberration rate angle）, reduce power device switch stress, reduce the chronic damage to motor simultaneously.
Embodiment 5：Referring to Fig. 3, as a modification of the present invention, described three sets of power cells 201 exchange laminated bus DC side directly with DC bus-bar voltage filter unit 203 dc bus just, zero, negative terminal is connected, the unfavorable factor such as electromagnetic interference that the reason such as secondary connection of minimizing causes；Described power cell exchange turnover bus outlet side connects external loading through output filter unit provides safe and stable, controlled exchange output；Described three sets of power cells 201, output filter unit 202, DC bus-bar voltage filter unit 203, low voltage control unit 204, the outside water inlet pipe and water outlet pipe providing heat dissipation circulating system are fixedly mounted on core framework 205 relevant position by bolt, guide rail connected mode, and low voltage control unit 204 provides independent reliable logic control function for inverter power storehouse 2.Power cell outlet side connects external loading through output filter unit 202 provides safe and stable, controlled exchange output, and output filter unit is arranged in strong cold air duct.Inverter power storehouse can realize thering is independent operating, the inverter of reliable and stable, fully functional straight-friendship translation function.Spatial volume using on design more reasonable, compact, can effectively realize Fast Installation safeguard, power stack module movement.
Embodiment 6：Referring to Fig. 4，As a modification of the present invention，Described water circulation cooling system includes core framework 305 and is arranged on the water-water heat exchanger 301 within core framework、Major cycle water pump 302、Swelling gasbag 303、Deionization system 304 and monitor control system，Described water-water heat exchanger 301 is arranged on the side of core framework 305，Described major cycle water pump is arranged on core framework 305 bottom，Described swelling gasbag 303 and deionization system 304 are installed on rear side of core framework 305，Described water-water heat exchanger 301、Major cycle water pump 302、Swelling gasbag 303、Deionization system 304 is all fixedly mounted on the relevant position of core framework by system pipeline mode with bolts，The cooling medium of major cycle water pump 302 offer constant pressure and flow velocity continually flows through water-water heat exchanger 301 and carries out heat exchange，Cross respective line after cooling medium cooling and enter back into rectifier power storehouse 1、Inverter power storehouse 2，With power cell 101 therein、201 cooled devices etc. carry out heat exchange，Take away heat，Water after intensification is back to the import of high-pressure circulation pump 302；According to the change of thermic load, PLC controls, according to the height of supply water temperature, the cooling water flow entering heat exchanger to described water circulation cooling system, thus reaching the requirement of system precise control of temperature；Swelling gasbag 303 provides stable operating pressure for whole water circulation system；Water-water heat exchanger 301 to interior connection main circulation pump, external connection outside cooling recirculation system, in cooling medium, replace outside cooling recirculation system through water-water heat exchanger 301 and be dispersed in the air by heat.Water circulation cooling system 3 long-term stable operation when meeting the various operating condition that under various environmental conditions adaptation cooled device is implemented separately, has carried out the components and parts such as big quantity sensor, valve, tank body and has simplified.Such as surge tank, pressurized tank realize steady pressure of system with simple swelling gasbag 303, internal water system system cooling medium no too lossy substantially in the case of No leakage；Remove water charging system, improve space availability ratio further, make overall structure compacter；Retain deionization system simultaneously, purify the optimizations such as the free electron that may separate out in cooling medium to meet.
Embodiment 7：As shown in Figure 1, in rectifier power storehouse 1 the noninductive bus of DC side lamination 104 just, zero, negative three-phase DC bus-bar voltage filter unit 203 in adjacent inverter power storehouse 2 is connected by busbar, the DC bus-bar voltage filter unit 203 of three sets of inverter power storehouses 2 is mutually connected in series " multi-inverter power storehouse common DC bus " structure using busbar, and mine flameproof and intrinsic safety type high pressure combined frequency changer movement can realize a complete ac-dc-ac inverter translation function.After a set of 1, three sets of inverter power storehouses 2 of rectifier power storehouse, a set of water circulation cooling system 3 are installed by connection simultaneously, strong cold air duct complements each other to form an airtight complete circulation air path, there is provided circulation cooling by water in rectifier power storehouse 1-wind heat-exchange system unit 103 for unit block beyond mine flameproof and intrinsic safety type high pressure combined frequency changer movement power cell 101,201, more reliable and more stable to ensure system operation.
Visible from the above mentioned, a set of using having an input of phase shift three-phase alternating current, " the rectifier power storehouse " of 12 pulse wave diode rectifier bridge cascaded structures, three sets diode clamp formula three-level topology principles " multi-inverter power storehouse common DC bus " " the inverter power storehouse " of structure using mature and reliable, " the water circulation cooling system " of a set of water-water-heat exchange for heat dissipation mode is assembled into has the mine flameproof and intrinsic safety type high pressure combined frequency changer movement that complete set one drags three commutation inversion ac-dc-ac inverter control functions；Significantly reduce 5 times, the interference to electrical network for 7 subharmonic currents, save electric energy.All occupy great performance advantage in space occupancy, Cost comparisons, aspect " the mine flameproof and intrinsic safety type high pressure combined frequency changer movement " structure such as stable and reliable for performance；And rectifier power storehouse, inverter power storehouse, water circulation cooling system all can realization has respectively rectification in itself, inversion, heat sinking function, core module commercialization.
Embodiment 8：As shown in figure 1, Integral explosion-proof combined frequency changer housing；Mine flameproof and intrinsic safety type high pressure combined frequency changer movement as above is installed in explosion-proof combined frequency changer housing；Further, in a kind of mining flame-proof high-voltage combined frequency changer of the embodiment of the present invention, Integral explosion-proof combined frequency changer housing adopts straight barrel type structure, and left and right sides opens the door；The explosion-proof combined frequency changer enclosure interior mobile extensible track of setting and supporting dolly, fix, safeguard the above " mine flameproof and intrinsic safety type high pressure combined frequency changer movement " for installing；About explosion-proof combined frequency changer housing, side door plate setting main loop cabling quick connector, explosion insulation connecting line cavity, intrinsic safety man-machine interface, control button knob, running status show.
At least one of technical characteristic described in embodiment 2,3,4,5,6,7 can also be combined with embodiment 1 and form new embodiment by the present invention.
It should be noted that above-described embodiment, not it is used for limiting protection scope of the present invention, on the basis of technique scheme, done equivalents or replacement each fall within the scope that the claims in the present invention are protected.
Claims (11)
1. mining flame-proof high-voltage combined frequency changer movement, it is characterized in that, described mining flame-proof high-voltage combined frequency changer movement includes a set of rectifier power storehouse, three sets of inverter power storehouses and a set of water circulation cooling system, and described three sets of inverter power storehouses are arranged between rectifier power storehouse and water circulation cooling system.
2. mining flame-proof high-voltage combined frequency changer movement according to claim 1 is it is characterised in that described rectifier power storehouse includes power cell, low voltage control unit, water-wind heat-exchange system unit, DC side lamination is noninductive bus and core framework,
Described power cell DC side is noninductive with DC side lamination, and bus is connected, and described low voltage control unit is that system provides logic control；Described water-wind heat-exchange system unit sets up auxiliary radiation circulation system for system, and described power cell, low voltage control unit, water-wind heat-exchange system unit, DC side lamination is noninductive, and bus is arranged on core framework；Wherein power cell adopts 12 pulse wave diode rectifier bridge cascaded structures；Described power cell internal installs one piece of cooled plate, all arrange diode power module in cooled plate both sides, exchange laminated bus are installed on power model, rectifier power storehouse 12 pulse wave diode rectifier bridge cascaded structure power cell AC connects the three-phase alternating voltage of the phase-shifting transformer output with 30 ° of phase differences, DC side lamination is noninductive bus just, zero, negative three-phase pass through DC bus-bar voltage filter unit in busbar connection inverter power storehouse.
3. rectifier power storehouse according to claim 2, it is characterized in that, described power cell, low voltage control unit, water-wind heat-exchange system unit, DC side lamination is noninductive, and bus passes through bolt, the connected modes such as guide rail are fixedly mounted on core framework relevant position, described core framework adopts C, described water-wind heat-exchange system unit is connected with external water circulation system, with inverter storehouse composition, there is rectification, during the frequency converter movement of inversion function, by water-wind heat-exchange system unit, the inside heat energy displacement that other electronic devices and components distribute in addition to power component is taken out of outside housing to water circulation system through blower fan internal circulating load, running for whole system provides a more stable working environment；Described low voltage control unit by master control borad, rise pressing plate, transformer, PLC and relay form, and are rectifier power storehouse and whole frequency convertor system provides stable working power and system automatic logic control function.
4. mining flame-proof high-voltage combined frequency changer movement according to claim 1 and 2, it is characterized in that, described inverter power storehouse includes three sets of power cells, a set of output filter unit, a set of DC bus-bar voltage filter unit, a set of low voltage control unit, core framework, one group of outside water inlet pipe and water outlet pipe providing heat dissipation circulating system, wherein：Described three sets of power cell DC sides are connected with DC bus-bar voltage filter unit, AC connects external loading equipment through output filter unit, described low voltage control unit provides logic control for system, the described outside water inlet pipe and water outlet pipe providing heat dissipation circulating system connects power cell and output filter unit, and described three sets of power cells, output filter unit, DC bus-bar voltage filter unit, low voltage control unit, the outside water inlet pipe and water outlet pipe providing heat dissipation circulating system are arranged on core framework；Described three sets of power cells adopt the cellular construction of design based on diode clamp formula three-level topology principle；Described power cell internal installs one piece of cooled plate, in uniform four IGBT in cooled plate both sides, two diode power modules, installs exchange laminated bus on power model, and bottom AC connects exchange turnover bus.
5. mining flame-proof high-voltage combined frequency changer movement according to claim 4, it is characterized in that, described three sets of power cells exchange laminated bus DC side directly with DC bus-bar voltage filter unit dc bus just, zero, negative terminal is connected, the unfavorable factor such as electromagnetic interference that the reason such as secondary connection of minimizing causes；Described power cell exchange turnover bus outlet side connects external loading through output filter unit provides safe and stable, controlled exchange output；Described three sets of power cells, output filter unit, DC bus-bar voltage filter unit, low voltage control unit, the outside water inlet pipe and water outlet pipe providing heat dissipation circulating system are fixedly mounted on core framework relevant position by bolt, guide rail connected mode；Described cooled plate is waterproof sealing structure, external water circulation system coolant carries out heat exchange through cooled plate and IGBT, diode power devices and reaches power device radiating requirements, described DC bus-bar voltage filter unit is made up of low inductance direct current laminated bus, resistance and electric capacity, and electric capacity is divided into two groups by multiple electric capacity parallel connections and is connected to direct current laminated bus positive zero, negative zero side；Two groups of resistance are connected to direct current laminated bus positive zero, negative zero side.
6. mining flame-proof high-voltage combined frequency changer movement according to claim 1 and 2, it is characterized in that, described water circulation cooling system includes core framework and is arranged on water-water heat exchanger within core framework, major cycle water pump, swelling gasbag, deionization system and monitor control system, described water-water heat exchanger is arranged on the side of core framework, described major cycle water pump is arranged on core framework bottom, and described swelling gasbag and deionization system are installed on rear side of core framework.
7. mining flame-proof high-voltage combined frequency changer movement according to claim 6, it is characterized in that, described water-water heat exchanger, major cycle water pump, swelling gasbag, deionization system are all fixedly mounted on the relevant position of core framework by system pipeline mode with bolts, described water-water heat exchanger internally connects main circulation pump, the outside cooling recirculation system of external connection, in cooling medium, heat is replaced outside cooling recirculation system through water-water heat exchanger and is dispersed in the air.
8. mining flame-proof high-voltage combined frequency changer movement according to claim 1 and 2, it is characterised in that described high pressure combined frequency changer movement adopts phase shift three-phase alternating current to input, turns direct current through 12 pulse wave diode rectification bridge power unit exchanges；Described frequency converter movement adopts " multi-inverter power storehouse common DC bus " structure, is mutually connected in series dc bus relatively using busbar
Diode clamp formula three-level topology principal power unit through being connected with DC bus-bar voltage filter unit is realized direct current input and is delivered stream output, and three sets of inverter power storehouse inverter power unit outputs connect load by the output filter that inside is arranged.
9. mining flame-proof high-voltage combined frequency changer movement according to claim 8, it is characterized in that, described a set of rectifier power storehouse, three sets of inverter power storehouse dc bus using n- just, zero-zero, negative-to bear " multi-inverter power storehouse common DC bus " structure that corresponding two-by-two busbar is connected in series to form.
10. a kind of mining flame-proof high-voltage combined frequency changer is it is characterised in that include：Integral explosion-proof combined frequency changer housing；
Mine flameproof and intrinsic safety type high pressure combined frequency changer movement as described in claim 1 to 6 is installed in described explosion-proof combined frequency changer housing.
11. mining flame-proof high-voltage combined frequency changers according to claim 10 it is characterised in that described Integral explosion-proof combined frequency changer housing adopts straight barrel type structure, open the door by the left and right sides；The described explosion-proof combined frequency changer enclosure interior mobile extensible track of setting and supporting dolly, for installing fixing mine flameproof and intrinsic safety type high pressure combined frequency changer movement；About described explosion-proof combined frequency changer housing, side door plate setting main loop cabling quick connector, explosion insulation connecting line cavity, intrinsic safety man-machine interface, control button knob, running status show；Design intake-outlet on rear side of described explosion-proof combined frequency changer housing, cooling outside water circulation cooling system is provided.
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| CN201610468082.1A CN106411143A (en) | 2016-06-24 | 2016-06-24 | Mine explosionproof high-voltage combined frequency converter core and frequency converter |
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| CN107911009A (en) * | 2017-12-30 | 2018-04-13 | 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 |
| 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 |
| CN111315186A (en) * | 2020-01-20 | 2020-06-19 | 王芳 | Intelligent control system of industrial control equipment |
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| CN111315186A (en) * | 2020-01-20 | 2020-06-19 | 王芳 | Intelligent control system of industrial control equipment |
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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. |
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