CN113206586A - Wind power converter power cabinet and multi-energy complementary energy station - Google Patents
Wind power converter power cabinet and multi-energy complementary energy station Download PDFInfo
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- CN113206586A CN113206586A CN202110642586.1A CN202110642586A CN113206586A CN 113206586 A CN113206586 A CN 113206586A CN 202110642586 A CN202110642586 A CN 202110642586A CN 113206586 A CN113206586 A CN 113206586A
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- 230000000295 complement effect Effects 0.000 title claims abstract description 12
- 230000017525 heat dissipation Effects 0.000 claims abstract description 65
- 238000005192 partition Methods 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims description 101
- 238000001816 cooling Methods 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 229910052802 copper Inorganic materials 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 18
- 230000000694 effects Effects 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000001681 protective effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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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
- 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
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a wind power converter power cabinet, which comprises a cabinet body and a power module group, wherein the power module group comprises a power module group and a power module group; a partition board is arranged in the cabinet body and divides the internal cavity of the cabinet body into two parts of cavities; the power module group is arranged in the first cavity of the cabinet body; the power module group comprises two power modules, and the two power modules in the power module group are arranged in a mirror image mode; a first heat dissipation device is arranged in the first cavity and used for dissipating heat of the power module. The cavity of the cabinet body in the wind power converter power cabinet is separated into two parts by the partition plate, the power module group is arranged in the first cavity, the first heat dissipation device arranged in the first cavity is utilized for heat dissipation, other devices of the wind power converter power cabinet are arranged in the second cavity of the cabinet body conveniently, and compared with the existing wind power converter power cabinet, the power module is accurately dissipated heat, the heat dissipation effect is improved, and the temperature of the power module is reduced. The invention further provides a multi-energy complementary energy station applying the wind power converter power cabinet.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a power cabinet of a wind power converter and a multi-energy complementary energy station.
Background
The wind power converter power cabinet comprises a power module, the power module and other electric devices (such as reactors) of the wind power converter power cabinet are arranged in the same cabinet body space, and the power module and other electric devices share the same set of heat dissipation device for heat dissipation, so that the heat dissipation effect of the power module is poor.
In addition, the power module and other devices use the same set of heat dissipation device to dissipate heat, which results in complex structural design of the heat dissipation air duct of the heat dissipation device and increases the manufacturing difficulty and the assembly difficulty.
In summary, how to solve the problem of poor heat dissipation effect of the power module in the existing wind power converter power cabinet is a problem to be urgently solved by technical personnel in the field.
Disclosure of Invention
In view of this, the invention provides a wind power converter power cabinet, an internal cavity of a cabinet body of the wind power converter power cabinet is divided into two parts by a partition board, a power module is arranged in a first cavity, and a first heat dissipation device arranged in the first cavity is used for heat dissipation, so that the heat dissipation effect is better, and the temperature reduction is facilitated. The invention also provides a multifunctional complementary energy station applying the wind power converter power cabinet, which ensures good heat dissipation effect and high reliability of a power module.
In order to achieve the purpose, the invention provides the following technical scheme:
a wind power converter power cabinet comprising:
the refrigerator comprises a cabinet body, wherein a partition plate is arranged inside the cabinet body and divides an inner cavity of the cabinet body into two parts of cavities;
a power module group individually disposed in a first cavity of the cabinet; the power module group comprises two power modules which are arranged in a mirror image mode;
and a first heat dissipation device is arranged in the first cavity and used for dissipating heat of the power module.
Preferably, in the wind power converter power cabinet, the first heat dissipation device includes:
the first fan is arranged in the first cavity and used for driving the gas in the first cavity to circularly flow;
the first heat exchanger is arranged in the first cavity and close to the inlet side or the outlet side of the first fan and is used for cooling the airflow flowing circularly.
Preferably, in the wind power converter power cabinet, the first fan is configured to continuously extract gas at the capacitor cell unit and then deliver the gas to the power unit.
Preferably, in the wind power converter power cabinet, in the power module group, the capacitor cells of the two power modules are close to each other, and the power cell of each power module is separated from the other power module.
Preferably, in the wind power converter power cabinet, the two power modules in the power module group radiate heat by using the same first heat dissipation device, form two symmetrical paths, and respectively flow through the circulating air ducts of the two power modules in the power module group.
Preferably, in the wind power converter power cabinet, the power module groups and the first fan are sequentially arranged in the vertical direction, and the first fan is located below the capacitance pool units of two power modules in the power module groups.
Preferably, in the wind power converter power cabinet, the first heat exchanger is a liquid cooling heat exchanger.
Preferably, in the wind power converter power cabinet, the power module groups are a group, or
The power module groups are in multiple groups, and each group of power module groups respectively adopts the same first heat dissipation device for heat dissipation or respectively adopts different first heat dissipation devices for heat dissipation.
Preferably, in the wind power converter power cabinet, the power module includes a power unit and a capacitance cell unit which are separated from each other, and a dc side busbar of the power unit is electrically connected to a capacitance cell busbar of the capacitance cell unit.
Preferably, in the wind power converter power cabinet, the capacitor cell unit includes:
the capacitance cell frame and the capacitance cell busbar enclose an accommodating space; two ends of the accommodating space are opened;
the direct current capacitor is arranged in the accommodating space; the direct current capacitors are multiple, and capacitor terminals of the direct current capacitors are connected to the capacitor cell busbar respectively.
Preferably, in the wind power converter power cabinet, two capacitor terminals of each dc capacitor are respectively arranged along a first direction; all the direct current capacitors are symmetrically distributed along the second direction; the first direction is perpendicular to the second direction.
Preferably, in the wind power converter power cabinet, the capacitor cell busbar includes a negative electrode busbar, an insulating layer and a positive electrode busbar which are sequentially stacked; and the direct-current side bus bar of the power unit is electrically connected with the capacitor battery bus bar through a copper cushion block.
Preferably, in the wind power converter power cabinet, the power unit includes:
a power unit frame mounted with a liquid cooling plate and a protection panel; the power unit frame, the liquid cooling plate and the protection panel enclose an installation space;
the IGBT module group is arranged in the installation space and comprises a plurality of IGBT modules which are respectively tightly attached to the liquid cooling plate; the direct current side of each IGBT module is led out of the power unit frame through a direct current side busbar, and the alternating current side of each IGBT module is led out of the power unit frame through an alternating current connecting copper bar;
the driving plate is arranged in the mounting space and is positioned on one side, away from the liquid cooling plate, of the IGBT module.
Preferably, in the wind power converter power cabinet, the IGBT modules in the IGBT module group are sequentially arranged and parallel to each other; the direct current sides of all IGBT modules in the IGBT module group are located on the same side, and the alternating current sides of all IGBT modules are also located on the same side.
Preferably, in the wind power converter power cabinet, the IGBT modules in the IGBT module group are sequentially arranged along a first direction; the direct current side busbar extends to each IGBT module in the IGBT module group along a first direction.
Preferably, in the wind power converter power cabinet, the liquid cooling plate is arranged in the middle of the power unit frame, and divides an internal space enclosed by the power unit frame and the protective panel into two installation spaces; and IGBT module groups and a driving plate are respectively arranged in the two installation spaces.
Preferably, in the wind power converter power cabinet, the number of the power units is multiple, and the power units are sequentially arranged along the second direction.
Preferably, in the wind power converter power cabinet, the wind power converter power cabinet further includes a reactor, and the reactor is arranged in the second cavity of the cabinet body; and a second heat dissipation device is arranged in the second cavity and used for dissipating heat of the reactor.
Preferably, in the wind power converter power cabinet, the second heat dissipation device includes:
the second fan is arranged in the second cavity and used for driving the gas in the second cavity to circularly flow;
a second heat exchanger mounted within the second chamber and adjacent to an inlet side or an outlet side of the second fan for cooling the airflow passing through the second fan; .
The second fan is arranged above the reactor and used for continuously extracting gas at the reactor and conveying the gas to the bottom of the reactor along the periphery of the reactor.
Preferably, in the wind power converter power cabinet, the reactor is arranged at the bottom of the second cavity; the reactor is a plurality of, and each reactor adopts different second heat abstractor heat dissipation.
Preferably, in the wind power converter power cabinet, two cavities of the cabinet body are arranged up and down, and the first cavity is located above the cabinet body.
A multi-energy complementary energy station comprises a wind power converter power cabinet, wherein the wind power converter power cabinet is the wind power converter power cabinet in any one of the technical schemes.
The invention provides a wind power converter power cabinet, which comprises a cabinet body and a power module group, wherein the power module group comprises a power module group and a power module group; a partition board is arranged in the cabinet body and divides the internal cavity of the cabinet body into two parts of cavities; the power module group is arranged in the first cavity of the cabinet body; the power module group comprises two power modules, and the two power modules in the power module group are arranged in a mirror image mode; a first heat dissipation device is arranged in the first cavity and used for dissipating heat of the power module.
In the wind power converter power cabinet provided by the invention, the cavity of the cabinet body is divided into two parts by the partition plate, the power module group is arranged in the first cavity, and the first heat dissipation device arranged in the first cavity is used for heat dissipation, so that other devices (such as a reactor) of the wind power converter power cabinet are conveniently arranged in the second cavity of the cabinet body.
In addition, in the wind power converter power cabinet provided by the invention, the power module and the reactor are respectively used for heat dissipation in different cavities by using different heat dissipation devices, so that the air duct structural design of the heat dissipation device is prevented from being too complex, and the manufacturing and assembling difficulty is reduced.
The invention also provides a multifunctional complementary energy station applying the wind power converter power cabinet, which ensures good heat dissipation effect and high reliability of a power module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a power module of a wind power converter power cabinet according to an embodiment of the present invention;
fig. 2 is an assembly diagram of a dc capacitor and a capacitor cell frame in a capacitor cell unit according to an embodiment of the present invention;
fig. 3 is an exploded view of a capacitor cell busbar according to an embodiment of the present invention;
FIG. 4 is an exploded view of a power cell provided by an embodiment of the present invention;
FIG. 5 is a schematic diagram of an assembly of two power modules provided by an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a power cabinet of a wind power converter provided in an embodiment of the present invention;
FIG. 7 is a schematic illustration of gas flow within the first chamber according to an embodiment of the present invention;
FIG. 8 is a schematic view of the gas flow in the second chamber according to an embodiment of the present invention;
fig. 9 is a schematic diagram of two wind power converter power cabinets applied side by side according to an embodiment of the present invention;
wherein, in fig. 1-9:
a capacitor cell unit 100; a direct current capacitor 101; a connecting member 102; a handle 103; a wind deflector 104; a capacitor cell busbar 110; a negative busbar 111; an insulating layer 112; a positive electrode bus bar 113; copper pads 114; a power unit 200; protective panels 201, 210; direct current side busbars 202 and 209; drive plates 203, 208; IGBT modules 204, 207; a power unit frame 205; a liquid-cooled plate 206; alternating current connection copper bars 211 and 212; a front baffle 213; a connecting copper bar 310; a fuse 320; power modules M1, M2; a cabinet body 400; a first cavity 401; a second cavity 402; a first heat exchanger 403; a first fan 404; a second fan 405; a second heat exchanger 406; a partition 407; reactors M3, M4.
Detailed Description
The embodiment of the invention discloses a wind power converter power cabinet, wherein an internal cavity of a cabinet body is divided into two parts by a partition plate, a power module is arranged in a first cavity, and a first heat dissipation device arranged in the first cavity is used for dissipating heat, so that the heat dissipation effect is better, and the temperature is favorably reduced. The embodiment of the invention also discloses a multifunctional complementary energy station applying the wind power converter power cabinet, which ensures that a power module has good heat dissipation effect and high reliability.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a wind power converter power cabinet, which comprises a cabinet body 400 and a power module group; a partition 407 is arranged inside the cabinet 400, and the partition 407 divides the internal cavity of the cabinet 400 into two parts, including a first cavity 401 and a second cavity 402; the power module group is arranged in the first cavity 401; the power module group comprises two power modules, and the two power modules in the power module group are arranged in a mirror image mode; a first heat dissipation device is disposed in the first cavity 401, and the first heat dissipation device is used for dissipating heat of the power module.
In the wind power converter power cabinet provided by this embodiment, the cavity of the cabinet body 400 is separated into two parts by the partition 407, the power module group is arranged in the first cavity, and the heat is dissipated by the first heat dissipation device arranged in the first cavity, so that other devices (such as a reactor) of the wind power converter power cabinet are arranged in the second cavity, compared with the existing wind power converter power cabinet, the accurate heat dissipation of the power module can be realized, the heat dissipation effect is improved, and the temperature of the power module is reduced.
The power module provided by the embodiment is described below with reference to the accompanying drawings:
referring to fig. 1 to 5, an embodiment of the invention provides a power module of a wind power converter power cabinet, including a power unit 200 and a capacitor unit 100 which are separated from each other; the dc bus bar of the power unit 200 is electrically connected to the capacitor cell bus bar 110 of the capacitor cell unit 100.
The power module that this embodiment provided includes power unit 200 and the capacitance cell unit 100 of components of a whole that can function independently each other, compares in prior art with power unit and the power module of capacitance cell unit integration as an organic whole, and the volume of each components of a whole that can function independently is small, light in weight, can transport with the components of a whole that can function independently to hoist and mount respectively in the production field, also can dismouting power unit 200 alone or dismouting capacitance cell unit 100 alone as required when later maintenance, be convenient for transportation, installation and later maintenance.
In the power module, the capacitor cell unit 100 includes:
a capacitance pool frame; the capacitance cell frame and the capacitance cell busbar 110 of the capacitance cell unit 100 enclose an accommodating space;
the direct current capacitor 101, the direct current capacitor 101 is arranged in the accommodating space; the number of the direct current capacitors 101 is multiple, and the capacitor terminals of each direct current capacitor 101 are respectively connected to the capacitor cell busbar 110.
Specifically, in the power module, all the dc capacitors 101 are disposed on the same side of the capacitor cell busbar 110, and the power unit 200 is disposed on a side of the capacitor cell busbar 110 away from the dc capacitors 101. The capacitor cell busbar 110 is connected with the capacitor cell frame through the direct current capacitor 101.
The accommodating space is provided with openings at two ends, and the openings at two ends can be respectively used as a ventilation inlet and a ventilation outlet, so that the whole accommodating space becomes a ventilation channel, and the first heat dissipation device is convenient to be matched to dissipate heat of each direct current capacitor 101 in an air cooling mode. Preferably, two ends of the opening in the accommodating space are opposite; when the power module is in a normal use state, the two ends of the opening of the accommodating space are respectively the upper end and the lower end of the accommodating space.
The capacitor cell frame comprises a mounting plate, a connector 102 and a wind deflector 104; the capacitor cell busbar 110 is of a plate-shaped structure, and the mounting plate is arranged in parallel with the capacitor cell busbar 110; the connecting piece 102 is arranged on the mounting plate, and the wind shield 104 is arranged on the connecting piece 102; the number of the wind deflectors 104 is two, and the two wind deflectors 104 are distributed at two ends of the mounting plate; the mounting plate, the capacitor cell busbar 110 and the two wind shields 104 enclose a through accommodating space which can be used as an air duct and is convenient for heat dissipation. The dc capacitor 101 is fixed to the mounting board.
Preferably, the capacitor cell frame is provided with a handle 103 and a lifting hole. Specifically, the handle 103 is mounted on the connecting member, and the lifting hole is disposed at the upper end of the mounting plate, so as to facilitate the movement, installation and detachment of the capacitor cell unit 100.
The capacitor cell busbar 110 includes a negative electrode busbar 111, an insulating layer 112 and a positive electrode busbar 113 which are sequentially stacked. The direct-current side busbar of the power unit 200 is electrically connected with the capacitor cell busbar 110 through the copper cushion block 104, and the overcurrent at the lap joint and the strength at the lap joint can be ensured.
In the above-described capacitor cell unit 100, the two capacitor terminals of each dc capacitor 101 are arranged in the first direction, respectively. All the dc capacitors 101 are symmetrically distributed along a second direction, which is perpendicular to the first direction.
Specifically, when the capacitance cell unit 100 is in a normal use state, the first direction is a vertical direction, the second direction is a horizontal direction, and the second direction is parallel to the plate surface of the capacitance cell busbar 110. In a normal use state, the phrase that all the dc capacitors 101 are symmetrically distributed along the second direction means that all the dc capacitors 101 in the capacitor cell unit 100 are divided into an upper part and a lower part, and the upper part of the dc capacitor 101 is symmetrical to the lower part of the dc capacitor 101.
In this embodiment, the copper pads 114 electrically connected to the positive busbar 113 and the copper pads 114 electrically connected to the negative busbar 111 are sequentially arranged along a first direction (i.e., a vertical direction). The capacitor terminals of the direct current capacitors 101 are arranged in the vertical direction, and all the direct current capacitors 101 are symmetrically distributed in the vertical direction, so that the area of a current path (namely, a current path between the positive pole of the IGBT module and the positive pole of the direct current capacitor 101 and a current path between the positive pole of the IGBT module and the negative pole of the direct current capacitor 101) in the capacitor battery busbar 110 is smaller, the contact ratio is higher, and the stray inductance is lower.
As shown in fig. 2, the capacitor cell module 100 includes 38 dc capacitors 101 (not limited to 38, and specifically, an appropriate number of dc capacitors 101 may be selected according to the voltage peak value), the dc capacitors 101 are arranged in 6 rows from top to bottom, and the upper 3 rows of dc capacitors 101 are symmetrical to the lower 3 rows of dc capacitors 101. 38 DC capacitors 101
Further, in the above embodiment, the dc capacitors 101 of the capacitor cell unit 100 are symmetrically distributed along the first direction, that is, in the normal use state, the dc capacitors 101 are symmetrically distributed in the left and right directions, as shown in fig. 2; correspondingly, the capacitor cell busbar 110 is arranged in a vertically symmetrical and horizontally symmetrical manner, and as shown in fig. 3, stray inductance is lower.
In the above power module, the power unit 200 includes:
a power unit frame 205, the power unit frame 205 being mounted with a liquid-cooled plate 206 and a guard panel; the power unit frame 205, the liquid cooling plate 206 and the protective panel enclose an installation space;
the IGBT module group is arranged in the installation space and comprises a plurality of IGBT modules which are respectively attached to the liquid cooling plate; the direct current side of each IGBT module is led out of the power unit frame 205 through a direct current side busbar, and the alternating current side of each IGBT module is led out of the power unit frame 205 through an alternating current connecting copper bar;
and the driving plate is arranged in the mounting space and is positioned on one side of the IGBT module, which is far away from the liquid cooling plate. The protection panel plays a protective role and prevents the damage of the IGBT module caused by accidents from affecting surrounding devices.
In the power module, the IGBT module is attached to the liquid cooling plate 206, and the coolant (such as water) flowing in the liquid cooling plate 206 is used to take away the heat generated by the IGBT modules in the IGBT module group during operation, so that the IGBT modules are at a suitable operating temperature.
Preferably, the IGBT modules in the IGBT module group are sequentially arranged and parallel to each other; the direct current side of all IGBT modules in the IGBT module group is located at the same side, the alternating current side of all IGBT modules is also located at the same side, so that the direct current side of all IGBT modules in the IGBT module group is led out through the same direct current side busbar, the alternating current side is led out through the same alternating current connecting copper bar, and the sizes of the direct current side busbar and the alternating current connecting copper bar are reduced. The direct current sides of all the IGBT modules in the IGBT module group are close to the capacitor cell busbar 110.
In this embodiment, the IGBT modules in the IGBT module group are arranged in parallel, so that the positive and negative poles on the dc side of the IGBT modules are close to the capacitance cell unit 100, which can reduce the size of the dc side busbar, reduce the cost, and make the entire power module more compact in structure and smaller in size.
Preferably, the IGBT modules in the IGBT module group are sequentially arranged along a first direction; the direct current side busbar extends to each IGBT module in the IGBT module group along the first direction, and the current path between the IGBT module and the direct current capacitor 101 is favorably shortened.
In the power unit 200, the liquid cooling plate 206 is disposed in the middle of the power unit frame 205, and divides the internal space enclosed by the power unit frame 205 and the protection panel into two installation spaces; IGBT module groups and a driving plate are respectively arranged in the two mounting spaces. The liquid cooling plate 206 is a double-sided liquid cooling plate, and is used for dissipating heat of the IGBT module groups in the two installation spaces, improving the utilization rate of the liquid cooling plate 206, and making full use of the internal space of the power unit frame 205.
In this embodiment, the power unit 200 adopts a double-sided liquid cooling design, so that more IGBT modules can be integrated, and the power density in unit volume is higher.
As shown in fig. 4, the power unit frame 205 is a ring structure, and two ends of the power unit frame are open, and the two ends of the power unit frame are respectively provided with the protection panels 201 and 210 through fixing members; the liquid cooling plate 206 is fixed in the middle of the power unit frame 205, and the openings at the two ends of the power unit frame 205 are distributed at the two sides of the liquid cooling plate 206; a first IGBT module group and a drive plate 203 are arranged in an installation space defined by the power unit frame 205, the liquid cooling plate 206 and the protective panel 201, the positive and negative poles of the direct current side of the IGBT module 204 in the first IGBT module group are led out through a direct current side busbar 202, and the alternating current side is led out through an alternating current connecting copper bar 211; a second IGBT module group and a drive plate 208 are arranged in an installation space defined by the power unit frame 205, the liquid cooling plate 206 and the protective panel 210, the positive and negative poles of the direct current side of the IGBT module 207 in the second IGBT module group are led out through a direct current side busbar 209, and the alternating current side is led out through an alternating current connecting copper bar 212.
The power cell frame 205 may be provided as a unitary structure, but to facilitate assembly of the liquid-cooled plate 206, the power cell frame 205 is provided to include a "U" shaped body and a front baffle 213 mounted at an opening of the "U" shaped body. The front baffle 213 is provided with a notch for guiding out the connecting pipe of the liquid cooling plate 206.
Preferably, in the power module, the number of the capacitor cell units 100 is 1, the number of the power cells 200 is plural, and the power cells 200 are sequentially arranged in the second direction, so that a ventilation passage penetrating vertically is formed between the adjacent power cells 200. The plurality of power units 200 and one capacitor cell unit 100 are connected with each other through the capacitor cell bus bar 110, so that the parasitic inductance of the loop is lower.
Specifically, in the wind power converter power cabinet, the power module group includes a power module M1 and a power module M2, the capacitor cells 100 of the power module M1 and the power module M2 are close to each other, and the capacitor cell busbars 110 of the two power modules are connected to each other through the connecting copper bar 310 and the fuse 320, as shown in fig. 5.
In this embodiment, the power module M1 and the power module M2 of the power module group are connected to each other through the connecting copper bar 310 and the fuse 320, so as to prevent the power module on one side from being damaged due to the failure of the power module on the other side. Meanwhile, the capacitor cell units 100 of the power module M1 and the power module M2 are close to each other, so that the direct current side commutation paths of the two are shorter, and the current uniformity is better.
In the wind power converter power cabinet that this embodiment provided, first heat abstractor includes:
the first fan 404 is installed in the first cavity 401, and is used for driving the gas in the first cavity 401 to flow circularly;
and a first heat exchanger 403, the first heat exchanger 403 being installed in the first chamber 401 near an inlet side or an outlet side of the first fan 404 for cooling the air current circulating through the first chamber.
In the first heat dissipation device, the first fan 404 drives the gas in the first cavity 401 to flow circularly, and meanwhile, the first heat exchanger 403 continuously exchanges heat with the gas and then discharges the heat out of the cabinet 400, so that the cold air continuously dissipates heat to the power module.
Specifically, in the wind power converter power cabinet, the first fan 404 is used for continuously extracting gas at the capacitor unit 100 and then delivering the gas to the power unit 200. Of course, the first fan may also be configured to continuously draw the airflow at the power unit 200 and blow the airflow to the capacitor pool unit 100, and the air supply direction of the first fan 404 is not limited in this embodiment.
In the power module group, the capacitor cells 100 of two power modules M1 and M2 are close to each other, and the power cell 200 of each power module is away from the other power module. In the first cavity 401, the two power modules M1 and M2 of the power module group radiate heat by using the same first heat sink, and form two symmetrical paths, and respectively flow through the circulating air ducts of the two power modules M1 and M2 in the power module group.
The power module group and the first fan are sequentially arranged in the vertical direction, specifically, the first fan 404 is arranged below the capacitor cell units 100 of the two power modules M1 and M2 in the power module group. The first heat exchanger 403 is located on the inlet side of the first fan 404; the first heat exchanger 403 can be mounted in the first cavity 401 by a bracket, preferably fixed directly below the capacitor cell unit 100 in the power module M1, M2, so as to omit the bracket and avoid the bracket from influencing the gas circulation flow; the first fan 404 is fixed below the first heat exchanger 403, and may be a centrifugal fan. Of course, the first fan 404 and the first heat exchanger 403 may also be both disposed above the power module group, and the installation position of the first heat dissipation device is not limited in this embodiment.
Referring to fig. 7, during operation, hot air at the capacitance pool unit 100 flows to the first heat exchanger 403 through the suction force of the centrifugal fan, exchanges heat with the first heat exchanger 403, and then is cooled to be cold air, then the centrifugal fan delivers the cold air to the power units 200 of the two power modules from two sides, and then the airflow returns to the capacitance pool unit 100 from the top of the power units 200, and the circulation is performed, so that the heat of the dc capacitor 101 is effectively taken away.
The first heat exchanger 403 is provided as a liquid cooling heat exchanger. In the scheme that first cavity 401 is located second cavity 402 top, in order to prevent that liquid cooling heat exchanger department weeping from dripping to in the second cavity 402 of below and endanger the device of arranging in second cavity 402, mountable water receiving tank on the baffle 407, or directly set up baffle 407 into the water receiving tank, this embodiment does not do the restriction to the type of water receiving tank, only need ensure that the water receiving tank can accept the weeping of liquid cooling heat exchanger department can.
A water conduit is communicated with the water receiving groove and is used for leading the liquid in the water receiving groove out of the cabinet body 400.
The number of the power module groups may be set as one group, or may be set as multiple groups, which is not limited in this embodiment. When the power modules are arranged into a plurality of groups, each group of power module groups can adopt the same first heat dissipation device for heat dissipation, but in order to reduce the volume of the first fan 404 in the first heat dissipation device and facilitate the flexible arrangement of each group of power module groups in the first cavity 401, each group of power module groups is preferably arranged to adopt different first heat dissipation devices for heat dissipation, specifically, the number of the first heat dissipation devices is the same as that of the power module groups, and the first heat dissipation devices and the power module groups are in one-to-one correspondence.
The wind power converter power cabinet further comprises a reactor, the reactor is arranged in the second cavity 402 of the cabinet body 400, a second heat dissipation device is arranged in the second cavity, and the second heat dissipation device is used for dissipating heat of the reactor.
In the wind power converter power cabinet provided by this embodiment, the power module group and the reactor respectively utilize different heat abstractors to dissipate heat, so that the air duct structural design of the heat abstractors is avoided being too complicated, and the manufacturing and assembling difficulty is reduced.
The second heat sink includes:
the second fan 405 is installed in the second chamber 402, and is used for driving the gas in the second chamber 402 to circularly flow;
and a second heat exchanger 406, the second heat exchanger 406 being installed in the second chamber 402 near an inlet side or an outlet side of the second fan 405 for cooling the air flow passing through the second fan 405.
The second fan 405 is disposed above the reactor for continuously extracting the gas at the reactor and delivering the gas to the bottom of the reactor along the periphery of the reactor, so as to circulate the gas in the second chamber 402, as shown in fig. 8.
The reactor is a plurality of, and each reactor adopts different second heat abstractor heat dissipation. Specifically, two reactors are provided, and a second fan 405 and a second heat exchanger 406 are respectively provided above the reactor M3 and the reactor M4. The reactor is heavy and is preferably arranged at the bottom of the second cavity.
Preferably, the first cavity 401 and the second cavity 402 are arranged up and down to shorten the size of a connection bus bar between the power module and the reactor; the second cavity 402 is preferably arranged below the first cavity 401 so that the reactor is fitted in the second cavity 402. Of course, the first cavity 401 and the second cavity 402 may be arranged in a horizontal direction, which is not limited to the size limit of the installation site.
In the above embodiment, the first heat exchanger 403 and the second heat exchanger 406 are respectively used in cooperation with a heat dissipation device disposed outside the cabinet 400, and the heat dissipation device is configured to continuously provide the first heat exchanger 403 and the second heat exchanger 406 with cooling liquid in a circulating flow, so that the cooling liquid continuously takes heat at the heat exchangers out of the cabinet 400 during the circulating flow and discharges the heat.
The partition 407 is provided with through holes so as to connect the copper bar to connect the power module and the reactor in the two cavities; the through hole is provided with an insulating part for insulating the connecting copper bar. The partition 407 may be a sheet metal part, and this embodiment is not limited.
For a high-power wind power converter, a plurality of wind power converter power cabinets provided by the above embodiments can be used in parallel, as shown in fig. 9.
The embodiment of the invention also provides a multi-energy complementary energy station which comprises a wind power converter power cabinet.
The wind power converter power cabinet provided by the embodiment is applied to the multi-energy complementary energy station provided by the embodiment, the wind power converter power cabinet has a good heat dissipation effect, the condition of overhigh temperature cannot be generated, and the reliability is high. Of course, the multi-energy complementary energy station provided in this embodiment also has other effects related to the wind power converter power cabinet provided in the above embodiments, and details are not described herein.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (22)
1. A wind power converter power cabinet, characterized by, includes:
the refrigerator comprises a cabinet body, wherein a partition plate is arranged inside the cabinet body and divides an inner cavity of the cabinet body into two parts of cavities;
a power module group disposed in a first cavity of the cabinet; the power module group comprises two power modules which are arranged in a mirror image mode;
and a first heat dissipation device is arranged in the first cavity and used for dissipating heat of the power module.
2. The wind power converter power cabinet according to claim 1, characterized in that the first heat sink comprises:
the first fan is arranged in the first cavity and used for driving the gas in the first cavity to circularly flow;
the first heat exchanger is arranged in the first cavity and close to the inlet side or the outlet side of the first fan and is used for cooling the airflow flowing circularly.
3. The wind power converter power cabinet according to claim 2, wherein the first fan is configured to continuously extract gas from the capacitor unit and then deliver the gas to the power unit.
4. The wind power converter power cabinet according to claim 2, wherein in the power module group, the capacitor cells of two power modules are close to each other, and the power cell of each power module is away from the other power module.
5. The wind power converter power cabinet according to claim 4, wherein two power modules in the power module group radiate heat by using the same first heat dissipation device, and form two symmetrical paths, and respectively flow through the circulating air ducts of the two power modules in the power module group.
6. The wind power converter power cabinet according to claim 5, wherein the power module groups and the first fan are arranged in sequence in a vertical direction, and the first fan is located below the capacitor cell units of two power modules in the power module groups.
7. The wind power converter power cabinet according to claim 2, wherein the first heat exchanger is a liquid cooled heat exchanger.
8. The wind power converter power cabinet of claim 1, wherein the power modules are in a group, or
The power module groups are in multiple groups, and each group of power module groups respectively adopts the same first heat dissipation device for heat dissipation or respectively adopts different first heat dissipation devices for heat dissipation.
9. The wind power converter power cabinet according to any one of claims 1 to 8, wherein the power module comprises a power unit and a capacitance cell unit which are separated from each other, and a direct current side busbar of the power unit is electrically connected with a capacitance cell busbar of the capacitance cell unit.
10. The wind power converter power cabinet according to claim 9, wherein the capacitor cell unit comprises:
the capacitance cell frame and the capacitance cell busbar enclose an accommodating space; two ends of the accommodating space are opened;
the direct current capacitor is arranged in the accommodating space; the direct current capacitors are multiple, and capacitor terminals of the direct current capacitors are connected to the capacitor cell busbar respectively.
11. The wind power converter power cabinet according to claim 10, wherein two capacitor terminals of each of the dc capacitors are arranged in a first direction; all the direct current capacitors are symmetrically distributed along the second direction; the first direction is perpendicular to the second direction.
12. The wind power converter power cabinet according to claim 9, wherein the capacitor cell busbar comprises a negative electrode busbar, an insulating layer and a positive electrode busbar which are sequentially stacked; and the direct-current side bus bar of the power unit is electrically connected with the capacitor battery bus bar through a copper cushion block.
13. The wind power converter power cabinet according to claim 9, characterized in that the power unit comprises:
a power unit frame mounted with a liquid cooling plate and a protection panel; the power unit frame, the liquid cooling plate and the protection panel enclose an installation space;
the IGBT module group is arranged in the installation space and comprises a plurality of IGBT modules which are respectively tightly attached to the liquid cooling plate; the direct current side of each IGBT module is led out of the power unit frame through a direct current side busbar, and the alternating current side of each IGBT module is led out of the power unit frame through an alternating current connecting copper bar;
the driving plate is arranged in the mounting space and is positioned on one side, away from the liquid cooling plate, of the IGBT module.
14. The wind power converter power cabinet according to claim 13, wherein the IGBT modules in the IGBT module group are arranged in sequence and parallel to each other; the direct current sides of all IGBT modules in the IGBT module group are located on the same side, and the alternating current sides of all IGBT modules are also located on the same side.
15. The wind power converter power cabinet according to claim 14, wherein the IGBT modules in the IGBT module group are sequentially arranged along a first direction; the direct current side busbar extends to each IGBT module in the IGBT module group along a first direction.
16. The wind power converter power cabinet according to claim 13, wherein the liquid cooling plate is disposed in the middle of the power unit frame and divides an inner space enclosed by the power unit frame and the protection panel into two installation spaces; and IGBT module groups and a driving plate are respectively arranged in the two installation spaces.
17. The wind power converter power cabinet of claim 9, wherein the number of the power units is plural, and each power unit is arranged in sequence along the second direction.
18. The wind power converter power cabinet according to claim 1, further comprising a reactor disposed in the second cavity of the cabinet body; and a second heat dissipation device is arranged in the second cavity and used for dissipating heat of the reactor.
19. The wind power converter power cabinet of claim 18, wherein the second heat sink comprises:
the second fan is arranged in the second cavity and used for driving the gas in the second cavity to circularly flow;
a second heat exchanger mounted within the second chamber and adjacent to an inlet side or an outlet side of the second fan for cooling the airflow passing through the second fan;
the second fan is arranged above the reactor and used for continuously extracting gas at the reactor and conveying the gas to the bottom of the reactor along the periphery of the reactor.
20. The wind power converter power cabinet according to claim 18, characterized in that the reactor is arranged at the bottom of the second cavity; the reactor is a plurality of, and each reactor adopts different second heat abstractor heat dissipation.
21. The wind power converter power cabinet according to claim 1, wherein two cavities of the cabinet body are arranged up and down, and the first cavity is located above.
22. A multi-energy complementary energy station comprising a wind power converter power cabinet, characterized in that said wind power converter power cabinet is according to any one of claims 1-21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110642586.1A CN113206586A (en) | 2021-06-08 | 2021-06-08 | Wind power converter power cabinet and multi-energy complementary energy station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110642586.1A CN113206586A (en) | 2021-06-08 | 2021-06-08 | Wind power converter power cabinet and multi-energy complementary energy station |
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| Publication Number | Publication Date |
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| CN113206586A true CN113206586A (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110642586.1A Pending CN113206586A (en) | 2021-06-08 | 2021-06-08 | Wind power converter power cabinet and multi-energy complementary energy station |
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Cited By (1)
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| CN113691146A (en) * | 2021-08-23 | 2021-11-23 | 远景能源有限公司 | Current transformer |
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