CN113660836A - Converter internal heat dissipation system - Google Patents
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- CN113660836A CN113660836A CN202110942471.4A CN202110942471A CN113660836A CN 113660836 A CN113660836 A CN 113660836A CN 202110942471 A CN202110942471 A CN 202110942471A CN 113660836 A CN113660836 A CN 113660836A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 155
- 238000001816 cooling Methods 0.000 claims abstract description 147
- 239000004065 semiconductor Substances 0.000 claims abstract description 19
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- 239000007788 liquid Substances 0.000 claims description 15
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 abstract description 16
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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
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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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
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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
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
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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
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
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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
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20281—Thermal management, e.g. liquid flow control
Abstract
The invention relates to an internal heat dissipation system of a converter, wherein an energy storage converter comprises a power cabinet, a filter cabinet and a grid-connected cabinet, a plurality of groups of power semiconductor devices and power cabinet heating components are arranged in the power cabinet, a plurality of groups of reactors are arranged in the filter cabinet, a grid-connected cabinet cooling component and a grid-connected cabinet heating component are arranged in the grid-connected cabinet, and the heat dissipation system comprises a water path circulation unit and a wind path circulation unit, wherein the water path circulation unit comprises a main water inlet pipeline, a main water return pipeline and a plurality of water cooling units, each water cooling unit is independently connected between the main water inlet pipeline and the main water return pipeline, and the water cooling units are arranged in the power cabinet, the filter cabinet or the grid-connected cabinet; the air path circulation unit comprises a plurality of air cooling units, the air cooling units are arranged in a power cabinet, a filter cabinet or a grid-connected cabinet, and the air cooling units and the water cooling units exchange heat. The converter cooling system is high in cooling efficiency, large in power density and small in occupied area.
Description
Technical Field
The invention relates to the technical field of converter heat dissipation, in particular to a converter internal heat dissipation system.
Background
The PCS, namely the energy storage converter, can control the charging and discharging processes of the storage battery, performs alternating current-direct current conversion, and can directly supply power for alternating current loads under the condition of no power grid. The energy storage converter generally comprises three main cabinet bodies, namely a power cabinet, a filter cabinet and a grid-connected cabinet, wherein electrical components in the three cabinet bodies can emit a large amount of heat in the operation process, and the three cabinet bodies need to be cooled in order to avoid the influence of high temperature on normal use of the three cabinet bodies. At present, the energy storage PCS mainly adopts an air cooling scheme, and the air cooling scheme has the main defects as follows:
1. the air cooling PCS has low power density, large heat dissipation capacity for high-power PCS and poor heat dissipation effect of the air cooling technology;
2. the same-power-level air-cooled PCS has larger volume, larger corresponding occupied area and high occupied cost of the corresponding energy storage side;
3. the long-term outdoor use of energy storage PCS, it is relatively poor to air-cooled PCS whole protection level.
Therefore, there is a need in the art for a heat dissipation system with better heat dissipation effect.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a converter internal heat dissipation system with good heat dissipation effect.
In order to achieve the object of the present invention, the present application provides the following technical solutions.
In a first aspect, the present application provides a converter internal heat dissipation system, the energy storage converter includes a power cabinet, a filter cabinet and a grid-connected cabinet, the power cabinet is provided with a plurality of sets of power semiconductor devices and power cabinet heating components, the filter cabinet is provided with a plurality of sets of reactors, the grid-connected cabinet is provided with a grid-connected cabinet cooling component and a grid-connected cabinet heating component, the heat dissipation system includes a water path circulation unit and a wind path circulation unit, wherein,
the water path circulating unit comprises a main water inlet pipeline, a main water return pipeline and a plurality of water cooling units, each water cooling unit is independently connected between the main water inlet pipeline and the main water return pipeline, and the water cooling units are arranged in the power cabinet, the filter cabinet or the grid-connected cabinet;
the air path circulation unit comprises a plurality of air cooling units, the air cooling units are arranged in a power cabinet, a filter cabinet or a grid-connected cabinet, and the air cooling units and the water cooling units exchange heat.
In an implementation manner of the first aspect, a heat sink is disposed on a surface of each group of the power semiconductor devices, the water-cooling unit includes a first water-cooling unit disposed in the power cabinet, the first water-cooling unit includes a plurality of liquid-cooling branches connected in parallel, and each liquid-cooling branch flows through the heat sink on the surface of one group of the power semiconductor devices and performs heat exchange.
In an embodiment of the first aspect, the water cooling unit includes a second water cooling unit arranged in the power cabinet and the filter cabinet in a serial manner, the second water cooling unit includes a plurality of groups of heat exchange units, each group of heat exchange units includes a first wind-water heat exchanger and a second wind-water heat exchanger which are connected in series, the first wind-water heat exchanger is arranged in the power cabinet, a cold source pipeline of the first wind-water heat exchanger is connected with a main water inlet pipeline, the second wind-water heat exchanger is arranged in the filter cabinet, and an inlet and an outlet of the cold source pipeline of the second wind-water heat exchanger are respectively connected with a water outlet pipe and a main water return pipeline of the first wind-water heat exchanger.
In an implementation manner of the first aspect, the air-cooling unit includes a first air-cooling unit disposed in the power cabinet, a first air duct is disposed in the power cabinet, the first air-cooling unit includes a first fan, the first fan is disposed in the first air duct and is configured to drive air to flow in a circulating manner in the first air duct, and multiple groups of power semiconductor devices, power cabinet heating assemblies, and first air-water heat exchangers are sequentially and circularly disposed in the first air duct. In this application, power cabinet heating element includes components such as electric capacity package, connection copper bar, female arranging of stromatolite.
In one embodiment of the first aspect, the first fan is a centrifugal fan.
In an embodiment of the first aspect, the air-cooling unit includes a second air-cooling unit disposed in the filter cabinet, a plurality of second air channels connected in a circulating manner are disposed in the filter cabinet, and all the second air channels share one air inlet, and the second air-cooling unit includes a second fan disposed at the air inlet for driving air to flow in each second air channel in a circulating manner; and a group of electric reactors and a group of second air-water heat exchangers are sequentially arranged in each second air channel.
In one embodiment of the first aspect, the second fan is a centrifugal fan.
In an implementation manner of the first aspect, the water-cooling unit includes a third water-cooling unit disposed in the grid-connected cabinet, the third water-cooling unit includes a third wind-water heat exchanger, an inlet and an outlet of a cold source pipeline of the third wind-water heat exchanger are respectively connected with the main water inlet pipeline and the grid-connected cabinet cooling component, and an outlet of the grid-connected cabinet cooling component is connected with the main water return pipeline.
In an implementation manner of the first aspect, the air-cooling unit includes a third air-cooling unit disposed in the grid-connected cabinet, a third air duct is disposed in the grid-connected cabinet, the third air-cooling unit includes a third fan, the third fan is disposed in the third air duct and is configured to drive air to circulate in the third air duct, and a third air-water heat exchanger and a grid-connected cabinet heating component are sequentially and circularly disposed in the third air duct. In this application, the cabinet heating element that is incorporated into the power networks is including setting up components such as isolator, circuit breaker, alternating current electric capacity, direct current fuse, copper bar, electrically conductive cable in the cabinet that is incorporated into the power networks.
In one embodiment of the first aspect, the third fan is an axial fan.
In one embodiment of the first aspect, a restrictor is provided between each water-cooling unit and the main water inlet line, and the flow rate of the cooling water in the water-cooling unit is adjusted by the restrictor.
Compared with the prior art, the invention has the beneficial effects that:
(1) the power density of the energy storage converter is improved, the power density of the liquid cooling converter with the same power level is greatly improved compared with that of an air cooling converter, and the occupied area is greatly reduced;
(2) for a high-power energy storage converter, the liquid cooling scheme has more excellent heat dissipation performance;
(3) the energy storage converter adopts the liquid cooling scheme to realize reasonable compact layout in the cabinet, promotes space utilization.
Drawings
FIG. 1 is a schematic diagram of a waterway circulation unit in the present application;
fig. 2 is a schematic diagram of the air path circulating unit according to the present application.
In the drawing, 1 is a power cabinet, 2 is a filter cabinet, 3 is a grid-connected cabinet, 4 is a main water inlet pipeline, 5 is a main water return pipeline, 6 is a throttle, 7 is a power semiconductor device, 8 is a first wind-water heat exchanger, 9 is a second wind-water heat exchanger, 10 is a reactor, 11 is a third wind-water heat exchanger, 12 is a grid-connected cabinet cooling component, 13 is a first air duct, 14 is a second air duct, 15 is a third air duct, 16 is a first fan, 17 is a second fan, 18 is a third fan, 19 is a capacitor pack, 20 is an isolating switch, 21 is a circuit breaker, and 22 is a conductive cable.
Detailed Description
Unless otherwise defined, technical or scientific terms used herein in the specification and claims should have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. All numerical values recited herein as between the lowest value and the highest value are intended to mean all values between the lowest value and the highest value in increments of one unit when there is more than two units difference between the lowest value and the highest value.
While specific embodiments of the invention will be described below, it should be noted that in the course of the detailed description of these embodiments, in order to provide a concise and concise description, all features of an actual implementation may not be described in detail. Modifications and substitutions to the embodiments of the present invention may be made by those skilled in the art without departing from the spirit and scope of the present invention, and the resulting embodiments are within the scope of the present invention.
The traditional energy storage PCS mainly adopts an air cooling scheme which has the following main defects: (1) the air cooling PCS has low power density, large heat dissipation capacity for high-power PCS and poor heat dissipation effect of the air cooling technology; (2) the same-power-level air-cooled PCS has larger volume, larger corresponding occupied area and high occupied cost of the corresponding energy storage side; (3) the long-term outdoor use of energy storage PCS, it is relatively poor to air-cooled PCS whole protection level. The application aims to provide a converter internal heat dissipation system with good heat dissipation performance and high space utilization rate.
In a specific embodiment, the application provides an internal heat dissipation system of a converter, the energy storage converter comprises a power cabinet, a filter cabinet and a grid-connected cabinet, multiple groups of power semiconductor devices and capacitor packs are arranged in the power cabinet, multiple groups of reactors are arranged in the filter cabinet, a grid-connected cabinet cooling component, an isolating switch, a circuit breaker and a conductive cable are arranged in the grid-connected cabinet, the heat dissipation system comprises a water path circulation unit and a water path circulation unit, wherein the water path circulation unit comprises a main water inlet pipeline, a main water return pipeline, a first water cooling unit, a second water cooling unit and a third water cooling unit, the first water cooling unit, the second water cooling unit and the third water cooling unit are all independently connected between the main water inlet pipeline and the main water return pipeline, and the first water cooling unit is arranged in the power cabinet and used for cooling the power cabinet; the second water cooling unit is connected with the power cabinet and the filter cabinet in series and used for cooling the power cabinet and the filter cabinet; the third water cooling unit is arranged in the grid-connected cabinet and used for cooling the grid-connected cabinet; the air path circulation unit comprises a first air cooling unit, a second air cooling unit and a third air cooling unit, and the first air cooling unit is arranged in the power cabinet, exchanges heat with the second water cooling unit and is used for cooling the power cabinet; the second air cooling unit is arranged in the filter cabinet and used for cooling the filter cabinet after exchanging heat with the second water cooling unit; the third air cooling unit is arranged in the grid-connected cabinet and used for cooling the grid-connected cabinet after exchanging heat with the third water cooling unit. In this application, add the water route circulation unit in the energy storage converter, have the following four advantages: (1) the single machine has high power density and large heat flux density, and a liquid cooling scheme is changed to achieve a better heat dissipation effect; (2) the IP grade of the whole cabinet can reach IP65, the cabinet has good adaptability to outdoor complex environments with high humidity, high salinity and the like, meets the outdoor use requirement, and has obvious advantages in reliability compared with the conventional air cooling system; (3) each functional unit adopts a self-circulation air path design, so that higher cooling efficiency is realized under the condition of compact structure, the equipment volume can be minimized due to high power density, the occupied area is greatly reduced, and the transportation and land cost is reduced; (4) the flow distribution of each liquid cooling branch can be better realized through the built-in throttling device of the water dividing joint of the main pipeline.
In one embodiment, the first water cooling unit includes a plurality of liquid cooling branches connected in parallel, and each liquid cooling branch exchanges heat with a group of power semiconductor devices.
In a specific implementation mode, the second water cooling unit includes the multiunit heat transfer unit, and every heat transfer unit of group includes first geomantic omen heat exchanger and the second geomantic omen heat exchanger of establishing ties, first geomantic omen heat exchanger sets up in the power cabinet, and the cold source pipeline and the main water intake pipe of first geomantic omen heat exchanger are connected, the second geomantic omen heat exchanger sets up in the filtering cabinet, and the both ends of the cold source pipeline of second geomantic omen heat exchanger are connected with first geomantic omen heat exchanger and main return water pipeline respectively. The utility model provides a second water-cooling unit establishes ties power cabinet and filter cabinet, be based on loss and flow balance consideration, this branch road cold water dispels the heat to power cabinet inner ring temperature through first geomantic omen heat exchanger in the power cabinet earlier, because the air heat loss is lower in the power cabinet, consequently, the temperature through heat transfer in this cabinet can not risen a lot, the microthermal cold water reenters the filter cabinet in other words, and force the forced air cooling heat transfer to the reactor through second geomantic omen heat exchanger, because the reactor temperature resistant is better, the cooling air temperature can be higher a bit, consequently, microthermal hydroenergy satisfies its heat transfer demand, and simultaneously, because these two heat exchanger flow resistances are less, establish ties on the water route and be favorable to entire system's flow balance, reduce system flow demand simultaneously.
In a specific implementation manner, a first air duct is arranged in the power cabinet, the first air-cooling unit includes a first fan, the first fan is arranged in the first air duct and is used for driving air to flow in a circulating manner in the first air duct, and a plurality of groups of power semiconductor devices, power cabinet heating assemblies and first air-water heat exchangers are arranged in the first air duct in a circulating manner in sequence. In the application, in order to improve the automation of the system, sensors, such as PT100, may be disposed at the air outlet of the first air-water heat exchanger and the air inlet of the heating component of the power cabinet, and configured to detect a change in air temperature in the power cabinet, so as to adjust the air volume of the first fan or the water flow in the first air-water heat exchanger.
In one embodiment, the first fan is a centrifugal fan.
In a specific embodiment, a plurality of second air channels which are circularly communicated are arranged in the filtering cabinet, and all the second air channels share one air inlet, and the second air cooling unit comprises a second fan which is arranged at the air inlet and used for driving air to circularly flow in each second air channel; and a group of electric reactors and a group of second air-water heat exchangers are sequentially arranged in each second air channel. The combined unit of a plurality of groups of filter reactors, a second air-water heat exchanger and a fan is arranged, one group of air-water heat exchangers is arranged on the upper part of each group of reactors, an air chamber and a centrifugal fan are installed on each heat exchanger, air flow driven by the centrifugal fan flows into an internal air channel of the reactor from an air inlet channel at the bottom of the reactor to dissipate heat of an internal winding and a coil of the reactor, heated hot air flows out from the centrifugal fan to the periphery after heat exchange of the heat exchangers, and forced air cooling self-circulation of the reactor is completed. And a temperature sensor can be arranged at the air outlet of the second air-water heat exchanger.
In one embodiment, the second fan is a centrifugal fan.
In a specific embodiment, the third water cooling unit comprises a third wind-water heat exchanger, two ends of a cold source pipeline of the wind-water heat exchanger are respectively connected with the main water inlet pipeline and the grid-connected cabinet cooling component, and one end of the grid-connected cabinet cooling component is connected with the main water return pipeline.
In a specific implementation manner, a third air duct is arranged in the grid-connected cabinet, the third air-cooling unit includes a third fan, the third fan is arranged in the third air duct and is used for driving air to flow in a circulating manner in the third air duct, and a third air-water heat exchanger and a grid-connected cabinet heating component are sequentially arranged in the third air duct in a circulating manner. In this application, the third wind channel in the cabinet that is incorporated into the power networks is independent wind channel, opens up alone in the cabinet that is incorporated into the power networks through the baffle.
In one embodiment, the third fan is an axial fan.
In a concrete implementation mode, set up the flow controller between first water-cooling unit, second water-cooling unit and the third water-cooling unit and the main water inlet pipe way, and pass through the cooling water flow in first water-cooling unit, second water-cooling unit and the third water-cooling unit is adjusted to the flow controller, and this application passes through the built-in flow controller of main line water distribution head, and each liquid cooling branch road flow distribution of realization that can be better to realize the purpose of reasonable water.
Examples
The following will describe in detail the embodiments of the present invention, which are implemented on the premise of the technical solution of the present invention, and the detailed embodiments and the specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
A heat dissipation system inside a converter comprises a water path circulation unit and an air path circulation unit, wherein a water path comprises a main water inlet pipe chariot, a main water return pipeline 5, a hose of a connecting device, a liquid cooling plate, an air-water heat exchanger and the like, specifically as shown in figure 1, an air path comprises a fan (including a centrifugal fan and an axial flow fan), an air channel, installation accessories and the like, and specifically as shown in figure 2. The energy storage converter comprises three closed and independent cabinet bodies, namely a power cabinet 1, a filter cabinet 2 and a grid-connected cabinet 3, wherein a plurality of groups of power semiconductor devices 7 (only 6 groups are taken as examples in the figure) and capacitor packs 19 (only the capacitor packs 19 are taken as representatives of the power cabinet heating components and are taken as examples in the embodiment), a plurality of groups of reactors 10 are arranged in the filter cabinet 2 (only 2 groups are taken as examples in the figure 1 and only 1 group is taken as an example in the figure 2), a grid-connected cabinet cooling component 12, an isolating switch 20, a circuit breaker 21, a conductive cable 22 and the like are arranged in the grid-connected cabinet 3 (in the embodiment, the isolating switch 20, the circuit breaker 21 and the conductive cable 22 are taken as representatives of the grid-connected cabinet heating components and are taken as examples only).
Wherein, the waterway circulation unit is as shown in fig. 1, and specifically as follows:
the waterway circulating unit comprises a main water inlet pipeline 4 and a main water outlet pipeline, the two pipelines are independently arranged, the position relation between the waterway circulating unit and the three cabinets is not considered, and generally, the height of the main water inlet pipeline 4 is lower than that of the main water outlet pipeline. The power cabinet 1 is internally provided with a plurality of groups of liquid cooling branches, the inlet of each group of liquid cooling branches is connected with the main water inlet pipeline 4, the junction is provided with the throttler 6, the outlet of each group of liquid cooling branches is connected with the main water outlet pipeline, and each group of liquid cooling branches is used for exchanging heat with a group of power semiconductor devices 7 to cool the power semiconductor devices 7.
Still be equipped with a plurality of first geomantic omen heat exchangers 8 in the power cabinet 1, the cold source entry of each first geomantic omen heat exchanger 8 is connected with main water intake pipe 4 to set up flow controller 6 in the junction, the cold source export of first geomantic omen heat exchanger 8 passes through the cold source entry that hose connection is located second geomantic omen heat exchanger 9 in the filter cabinet 2, and the cold source export of second geomantic omen heat exchanger 9 is connected with main return water pipeline 5.
And a third air-water heat exchanger 11 is arranged in the grid-connected cabinet 3, a cold source inlet of the third air-water heat exchanger 11 is connected with the main water inlet pipeline 4, a throttler 6 is arranged at the joint, and a cold source outlet of the third air-water heat exchanger 11 is connected with a grid-connected cabinet cooling component 12 and then is connected with a main water return pipeline 5.
As shown in fig. 2, the air path circulation unit is specifically as follows:
be equipped with first wind channel 13 in the power cabinet 1, set up first fan 16 in first wind channel 13, and be used for driving the air to flow in first wind channel 13 inner loop, first fan 16 is axial fan, it sets up multiunit power semiconductor device 7 to circulate in proper order in first wind channel 13, electric capacity package 19 and first geomantic omen heat exchanger 8, in first wind channel 13, cool water through in first geomantic omen heat exchanger 8 cools off the air, the cold air is after power semiconductor device 7, electric capacity package 19, power semiconductor device 7 and electric capacity package 19 cool down, but the air intensifies, the air that heaies up cools down when passing through first geomantic omen heat exchanger 8 once more, circulate in proper order.
A plurality of second air channels 14 which are circularly communicated are arranged in the filter cabinet 2, all the second air channels 14 share one air inlet, a second fan 17 is arranged at the air inlet, and air is driven by the second fan 17 to circularly flow in each second air channel 14; the second fan 17 is a centrifugal fan. And a group of reactors 10 and a group of second wind-water heat exchangers 9 are sequentially arranged in each second wind channel 14. The hot air is cooled after passing through the second wind-water heat exchanger 9 and flows under the action of the second fan 17, when the hot air passes through the reactor 10, the heat of the reactor 10 is absorbed, so that the reactor 10 is cooled, meanwhile, the cold air is changed into the hot air, and the hot air is changed into the cold air again after passing through the second wind-water heat exchanger 9 and circulates sequentially.
A third air duct 15 is provided in the grid-connected cabinet 3, a plurality of third fans 18 (only 2 are illustrated in fig. 2) are provided in the third air duct 15, the third fans 18 are configured to drive air to circulate in the third air duct 15, and the third fans 18 are axial flow fans. And a third wind-water heat exchanger 11, a disconnecting switch 20, a circuit breaker 21 and a conductive cable 22 are sequentially and circularly arranged in the third air duct 15. When the hot air passes through the third wind-water heat exchanger 11, the hot air becomes cold air, and then passes through the heat generating components such as the disconnecting switch 20, the circuit breaker 21, and the conductive cable 22 in sequence under the driving of the third fan 18, so that the heat generating components are cooled, and at the same time, the cold air becomes hot air, and the hot air circulates through the third wind-water heat exchanger 11, and then becomes cold air again, and circulates in sequence.
The embodiments described above are intended to facilitate the understanding and appreciation of the application by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present application is not limited to the embodiments herein, and those skilled in the art who have the benefit of this disclosure will appreciate that many modifications and variations are possible within the scope of the present application without departing from the scope and spirit of the present application.
Claims (11)
1. A converter internal heat dissipation system comprises a power cabinet, a filter cabinet and a grid-connected cabinet, wherein a plurality of groups of power semiconductor devices and power cabinet heating components are arranged in the power cabinet, a plurality of groups of reactors are arranged in the filter cabinet, and a grid-connected cabinet cooling component and a grid-connected cabinet heating component are arranged in the grid-connected cabinet, and is characterized in that the heat dissipation system comprises a water path circulation unit and a wind path circulation unit, wherein,
the water path circulating unit comprises a main water inlet pipeline, a main water return pipeline and a plurality of water cooling units, each water cooling unit is independently connected between the main water inlet pipeline and the main water return pipeline, and the water cooling units are arranged in the power cabinet, the filter cabinet or the grid-connected cabinet;
the air path circulation unit comprises a plurality of air cooling units, the air cooling units are arranged in a power cabinet, a filter cabinet or a grid-connected cabinet, and the air cooling units and the water cooling units exchange heat.
2. The converter internal heat dissipation system of claim 1, wherein a heat sink is disposed on a surface of each group of power semiconductor devices, the water cooling unit comprises a first water cooling unit disposed in the power cabinet, the first water cooling unit comprises a plurality of liquid cooling branches connected in parallel, and each liquid cooling branch flows through the heat sink on the surface of one group of power semiconductor devices and performs heat exchange.
3. The converter internal heat dissipation system of claim 1, wherein the water cooling unit comprises a second water cooling unit serially disposed in the power cabinet and the filter cabinet, the second water cooling unit comprises a plurality of sets of heat exchange units, each set of heat exchange unit comprises a first wind-water heat exchanger and a second wind-water heat exchanger serially connected, the first wind-water heat exchanger is disposed in the power cabinet, a cold source pipeline of the first wind-water heat exchanger is connected to the main water inlet pipeline, the second wind-water heat exchanger is disposed in the filter cabinet, and an inlet and an outlet of the cold source pipeline of the second wind-water heat exchanger are respectively connected to a water outlet pipe and a main water return pipeline of the first wind-water heat exchanger.
4. The converter internal cooling system of claim 3, wherein the air cooling unit comprises a first air cooling unit disposed in a power cabinet, a first air duct is disposed in the power cabinet, the first air cooling unit comprises a first fan, the first fan is disposed in the first air duct and is configured to drive air to circulate in the first air duct, and multiple sets of power semiconductor devices, power cabinet heating assemblies, and first air-water heat exchangers are sequentially and cyclically disposed in the first air duct.
5. The converter internal heat dissipation system of claim 4, wherein said first fan is a centrifugal fan.
6. The converter internal cooling system of claim 3, wherein the air cooling unit comprises a second air cooling unit disposed in a filter cabinet, the filter cabinet is provided with a plurality of second air channels connected in a circulating manner, and all the second air channels share one air inlet, the second air cooling unit comprises a second fan disposed at the air inlet for driving air to flow in each second air channel in a circulating manner; and a group of electric reactors and a group of second air-water heat exchangers are sequentially arranged in each second air channel.
7. The converter internal heat dissipation system of claim 6, wherein said second fan is a centrifugal fan.
8. The converter internal cooling system of claim 1, wherein the water cooling unit comprises a third water cooling unit arranged in a grid-connected cabinet, the third water cooling unit comprises a third wind-water heat exchanger, an inlet and an outlet of a cold source pipeline of the third wind-water heat exchanger are respectively connected with a main water inlet pipeline and a grid-connected cabinet cooling component, and an outlet of the grid-connected cabinet cooling component is connected with a main water return pipeline.
9. The converter internal cooling system of claim 8, wherein the air cooling unit comprises a third air cooling unit disposed in a grid-connected cabinet, a third air duct is disposed in the grid-connected cabinet, the third air cooling unit comprises a third fan, the third fan is disposed in the third air duct and is configured to drive air to circulate in the third air duct, and a third air-water heat exchanger and a grid-connected cabinet heating component are sequentially and circularly disposed in the third air duct.
10. The converter internal heat dissipation system of claim 9, wherein said third fan is an axial fan.
11. The converter internal heat dissipation system of any one of claims 1 to 10, wherein a flow restrictor is provided between each water cooling unit and the main water inlet pipeline, and the flow of cooling water in the water cooling unit is adjusted by the flow restrictor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110942471.4A CN113660836A (en) | 2021-08-17 | 2021-08-17 | Converter internal heat dissipation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110942471.4A CN113660836A (en) | 2021-08-17 | 2021-08-17 | Converter internal heat dissipation system |
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| CN113660836A true CN113660836A (en) | 2021-11-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203071797U (en) * | 2012-11-29 | 2013-07-17 | 浙江海得新能源有限公司 | Cooling system of converter |
| CN203071796U (en) * | 2012-11-29 | 2013-07-17 | 浙江海得新能源有限公司 | Air duct system of converter |
| CN204258599U (en) * | 2014-12-23 | 2015-04-08 | 北京合力电气传动控制技术有限责任公司 | Novel combination type radiator structure converter cabinet |
| WO2019113915A1 (en) * | 2017-12-11 | 2019-06-20 | 中车永济电机有限公司 | Traction converter cabinet |
| CN210431209U (en) * | 2019-10-31 | 2020-04-28 | 株洲中车时代电气股份有限公司 | Water-cooled wind power converter |
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2021
- 2021-08-17 CN CN202110942471.4A patent/CN113660836A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203071797U (en) * | 2012-11-29 | 2013-07-17 | 浙江海得新能源有限公司 | Cooling system of converter |
| CN203071796U (en) * | 2012-11-29 | 2013-07-17 | 浙江海得新能源有限公司 | Air duct system of converter |
| CN204258599U (en) * | 2014-12-23 | 2015-04-08 | 北京合力电气传动控制技术有限责任公司 | Novel combination type radiator structure converter cabinet |
| WO2019113915A1 (en) * | 2017-12-11 | 2019-06-20 | 中车永济电机有限公司 | Traction converter cabinet |
| CN210431209U (en) * | 2019-10-31 | 2020-04-28 | 株洲中车时代电气股份有限公司 | Water-cooled wind power converter |
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