CN104393739A - Power cabinet heat dissipation system - Google Patents
Power cabinet heat dissipation system Download PDFInfo
- Publication number
- CN104393739A CN104393739A CN201410607332.6A CN201410607332A CN104393739A CN 104393739 A CN104393739 A CN 104393739A CN 201410607332 A CN201410607332 A CN 201410607332A CN 104393739 A CN104393739 A CN 104393739A
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- China
- Prior art keywords
- heat dissipation
- reactor
- air duct
- cabinet
- power
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- 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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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inverter Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to a power cabinet heat dissipation system. A power cabinet is divided into an independent upper heat dissipation air duct and an independent lower heat dissipation air duct, wherein the upper heat dissipation air duct is a power module heat dissipation air duct, and the lower heat dissipation air duct is a reactor heat dissipation air duct; the power module heat dissipation air duct is a closed circulation air duct enclosed by an IGBT power module in the air duct, a heat exchanger and a fan which are located below the IGBT power module, a first wind blocking plate and a cabinet body; the reactor heat dissipation air duct is a closed circulation air duct enclosed by a reactor in the air duct, a heat exchanger and a fan which are located above the reactor, a second wind blocking plate and a cabinet body. According to the power cabinet heat dissipation system of the invention, the IGBT power module is located at the outlet of the heat exchanger, cold air directly cools a high-heat emission device, and therefore, reduction of the temperature rise of key devices can be facilitated, and the reliability of the devices can be improved; the power module heat dissipation air duct has the advantages of small length, small pressure loss of the fan and high heat dissipation efficiency; the wind blocking plate encloses the reactor, so that the interior circulation air duct can be formed, and therefore, air can completely flows through the coil of the reactor, and reduction of the temperature rise of the reactor can be facilitated, and the size of the reactor can be decreased, and the cost of the devices can be decreased.
Description
Technical field
The present invention relates to a kind of power cabinet cooling system, particularly relate to a kind of airtight cooling system including high-power converter and reactor.
Background technology
Along with developing rapidly of wind power new energy, the single-machine capacity of wind-powered electricity generation complete machine is increasing from 2.0MW toward more than 3.0MW type, and especially offshore wind farm is more obvious to more jumbo demand.And along with the continuous growth of complete blower capacity, requiring that the volume of wind electric converter is less, power density is higher, this just needs under unit volume, take away more loss, thus needs cooling system more efficiently.Therefore, high-power heat-dissipation system becomes a key technical problem of high-power converter product.
At present, the radiating mode that high-power converter generally adopts is wind-cooling heat dissipating mode and liquid-cooling heat radiation mode.
There is following defect in wind-cooling heat dissipating mode:
1) air-cooled radiator radiating efficiency is low, power model volume is large;
2) IP protection is low, easily causes sand and dust and salt fog ingoing power cabinet cavity, reduces device reliability;
3) demand of High aititude and offshore wind farm can not be met.
Therefore, wind-cooling heat dissipating mode is not suitable for high-power converter, especially the current transformer of application and offshore wind farm.
Adopt the current transformer of liquid-cooling heat radiation mode to have the aspect advantages such as IGBT module radiating efficiency is high, power model density is high, volume is little, also have IP protection high (IP54), effectively can prevent entering of sand and dust and salt fog, device reliability is high.Therefore, liquid-cooling heat radiation mode is the optimal solution of high-power converter, but liquid-cooling heat radiation mode also exists many deficiencies:
1) liquid cooling heat radiator is adopted to cool IGBT module, the core temperature of IGBT module is low, allow the electric current of IGBT module larger, but the device around IGBT module, the devices such as such as electric capacity, Hall, PCB element do not cool by liquid cooling heat radiator, device temperature rise will exceed its setting, exists and damages risk;
2) high-power converter adopts liquid cooling reactor, places liquid cooling heat radiator at iron core of electric reactor and line parlor, easily occurs causing reactor short circuit because radiator leaks, causes security risk.
The object of the invention is to there are the problems referred to above for existing technology, provide a kind of cooling system to solve the deficiency of above-mentioned liquid-cooling heat radiation mode, improve power density and the reliability of converter equipment.
Object of the present invention realizes by following technical proposal: a kind of power cabinet cooling system, described cooling system comprises IGBT power modules, blower fan, heat exchanger, reactor, the first second gear aerofoil and cabinet, described cabinet cabinet is divided into upper and lower two independently heat dissipation wind channels, top is power model heat dissipation wind channel, and bottom is reactor heat dissipation wind channel; Described power model heat dissipation wind channel is jointly surrounded by the heat exchanger of the IGBT power modules and below thereof that are arranged in air channel, blower fan, first gear aerofoil and cabinet and forms an airtight circulation air path; Described reactor heat dissipation wind channel is encircled into an airtight circulation air path by the heat exchanger of the reactor and top thereof that are arranged in air channel, blower fan, second gear aerofoil and cabinet.
Described IGBT power modules comprises IGBT module, pcb board, Absorption Capacitance and bus capacitor, alternating current-direct current copper bar device, and wherein pcb board and electric capacity are all temperature sensors.
Described blower fan is axial flow blower.
A kind of power cabinet cooling system that the present invention relates to, its distinguishing feature is:
1) described IGBT power modules is positioned at the air outlet of heat exchanger, and cold wind directly cools high heater members, is conducive to reducing Primary Component temperature rise, and improve device reliability, described power model heat dissipation wind channel air channel is short, blower fan crushing is little, and radiating efficiency is high;
2) second gear aerofoil is encircled into inner loop air channel reactor, makes wind sufficiently flow through reactor line bag and iron core, is conducive to reducing the temperature rise of reactor device, reduces reactor volume, reduces device cost, avoid the use of water cooling reactor.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of power cabinet cooling system;
Fig. 2 is a kind of power cabinet cooling system embodiment end view;
Fig. 3 is a kind of power cabinet cooling system embodiment stereogram.
Embodiment
As shown in Figure 1, a kind of power cabinet cooling system, described cooling system comprises IGBT power modules, blower fan, heat exchanger, reactor, deep bead and cabinet, described cabinet cabinet is divided into upper and lower two independently heat dissipation wind channels, top is power model heat dissipation wind channel 100, and bottom is reactor heat dissipation wind channel 200; Described power model heat dissipation wind channel 100 is jointly surrounded by the heat exchanger 2 of the IGBT power modules 1 and below thereof that are arranged in air channel, blower fan 3, first gear aerofoil 4 and cabinet 9 and forms an airtight circulation air path; Described reactor heat dissipation wind channel 200 is encircled into an airtight circulation air path by the heat exchanger 6 of the reactor 5 and top thereof that are arranged in air channel, blower fan 7, second gear aerofoil 8 and cabinet 9.
Mutually isolated between two circulation air paths, the outlet hot blast of resistant to elevated temperatures reactor 5 can be avoided to have influence on can not the related device of high temperature resistant IGBT power modules 1; Be divided into two circulation air paths simultaneously and can reduce air channel length, reduce blower fan crushing, improve radiating efficiency.
Described heat exchanger 2 by cooling fluid, the air energy entering heat exchanger is taken away, the intake air temperature of heat exchanger is higher than air outlet temperature, therefore heat exchanger is placed on below IGBT power modules 1, the outlet cold wind of heat exchanger is made directly to cool high heater members (IGBT module and alternating current-direct current copper bar), be conducive to the temperature rise reducing heater members, reduce the ambient temperature of Sensitive Apparatus (pcb board and electric capacity), improve device reliability.
Described blower fan 3 is axial flow blower, is positioned at below heat exchanger 2, can reduce heat dissipation wind channel 100 length, blower fan crushing is little, radiating efficiency is high;
Reactor heat dissipation wind channel 200 is encircled into an airtight circulation air path by the heat exchanger 6 of the reactor 5 and top thereof that are arranged in air channel and blower fan 7, second gear aerofoil 8 and cabinet 9.
Described reactor 5 is high heater members, and primarily of unshakable in one's determination and line bag composition, iron core isolates gap with line bag and line parlor insulating stay, and its effect improves radiating efficiency; Deep bead 8 is encircled into inner loop air channel 200 reactor 5, improves wind speed in enclosed area, makes air flow through iron core of electric reactor and line bag with more speed, fully cooling iron core of electric reactor and line bag, reduces reactor temperature rise, improves reactor radiating efficiency.
Deep bead 4 and cabinet 9 are encircled into a circulation air path, have fully been beneficial to space in cabinet, have decreased machine volume.
As shown in Figure 2 and Figure 3, described a kind of power cabinet cooling system is divided into upper and lower two independently heat dissipation wind channels, top is power model heat dissipation wind channel 100, bottom is reactor heat dissipation wind channel 200, mutually isolated between two circulation air paths, the outlet hot blast of reactor 5 can be avoided to have influence on the related device of IGBT power modules 1; Be divided into two circulation air paths simultaneously and can reduce air channel length, reduce blower fan crushing, improve radiating efficiency; Sealing and circulating air channel can prevent outside sand and dust and salt fog etc. to device infringement, improves the reliability of device.
The present embodiment has multiple IGBT power modules 1, can be side by side or rows to realize the parallel connection of multiple power modules.DC bus outlet copper bar, on module top, realizes the connection of DC side both positive and negative polarity by lamination copper bar; Exchange the bottom that outlet side is positioned at module, be connected to reactor 5 by switching copper bar or cable.
IGBT power modules 1 includes bus capacitor 11 and Absorption Capacitance 12, IGBT module 13 and IGBT drive plate 14, because the ambient temperature of electric capacity and pcb board device does not allow more than 70 degree, therefore all device well-ventilateds are required, and preferably at heat exchanger air outlet position, could reduce its device temperature like this, improve the life-span.
The present embodiment first gear aerofoil 4 is encircled into an inner air channel power modules 1, makes the temperature of heat exchanger air outlet directly cool liquid cooling power modules 1.Heat exchanger 2 and blower fan 3, deep bead 4 and cabinet 9 surround formation external air channel jointly, make the wind flowing through power modules 1 be back to blower fan 3 through external air channel, then enter heat exchanger, form a circulation air path like this.
Described heat exchanger 6 by cooling fluid, the air energy entering heat exchanger is taken away, and the intake air temperature of heat exchanger is higher than air outlet temperature, and the hot blast of reactor directly enters heat exchanger, improves heat exchange efficiency.
Claims (3)
1. a power cabinet cooling system, it is characterized in that: described cooling system comprises IGBT power modules, blower fan, heat exchanger, reactor, the first second gear aerofoil and cabinet, described cabinet cabinet is divided into upper and lower two independently heat dissipation wind channels, top is power model heat dissipation wind channel (100), and bottom is reactor heat dissipation wind channel (200); Described power model heat dissipation wind channel (100) is jointly surrounded by the heat exchanger (2) of the IGBT power modules (1) and below thereof that are arranged in air channel, blower fan (3), first gear aerofoil (4) and cabinet (9) and forms an airtight circulation air path; Described reactor heat dissipation wind channel (200) is encircled into an airtight circulation air path by the heat exchanger (6) of the reactor (5) and top thereof that are arranged in air channel, blower fan (7), second gear aerofoil (8) and cabinet (9).
2. a kind of power cabinet cooling system according to claim 1, it is characterized in that: described IGBT power modules (1) comprises IGBT module, pcb board, Absorption Capacitance and bus capacitor, alternating current-direct current copper bar device, and wherein pcb board and electric capacity are all temperature sensors.
3. a kind of power cabinet cooling system according to claim 2, is characterized in that: described blower fan 7 is axial flow blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410607332.6A CN104393739A (en) | 2014-11-03 | 2014-11-03 | Power cabinet heat dissipation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410607332.6A CN104393739A (en) | 2014-11-03 | 2014-11-03 | Power cabinet heat dissipation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104393739A true CN104393739A (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410607332.6A Pending CN104393739A (en) | 2014-11-03 | 2014-11-03 | Power cabinet heat dissipation system |
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| CN (1) | CN104393739A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112888245A (en) * | 2020-12-31 | 2021-06-01 | 中国人民解放军海军工程大学 | Low-noise closed water-cooling heat dissipation type high-voltage active dynamic reactive power compensation device |
| WO2021207891A1 (en) * | 2020-04-13 | 2021-10-21 | 深圳市禾望电气股份有限公司 | Wind power converter |
| CN115312480A (en) * | 2022-10-11 | 2022-11-08 | 合肥中恒微半导体有限公司 | DBC substrate for IGBT power module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203119741U (en) * | 2012-12-28 | 2013-08-07 | 中国电力科学研究院 | Inverter cabinet of photovoltaic inverter |
| CN203193473U (en) * | 2012-12-26 | 2013-09-11 | 北京科诺伟业科技有限公司 | Cooling system of IGBT power module |
| CN204334292U (en) * | 2014-11-03 | 2015-05-13 | 浙江海得新能源有限公司 | A kind of power cabinet cooling system |
-
2014
- 2014-11-03 CN CN201410607332.6A patent/CN104393739A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203193473U (en) * | 2012-12-26 | 2013-09-11 | 北京科诺伟业科技有限公司 | Cooling system of IGBT power module |
| CN203119741U (en) * | 2012-12-28 | 2013-08-07 | 中国电力科学研究院 | Inverter cabinet of photovoltaic inverter |
| CN204334292U (en) * | 2014-11-03 | 2015-05-13 | 浙江海得新能源有限公司 | A kind of power cabinet cooling system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021207891A1 (en) * | 2020-04-13 | 2021-10-21 | 深圳市禾望电气股份有限公司 | Wind power converter |
| CN112888245A (en) * | 2020-12-31 | 2021-06-01 | 中国人民解放军海军工程大学 | Low-noise closed water-cooling heat dissipation type high-voltage active dynamic reactive power compensation device |
| CN112888245B (en) * | 2020-12-31 | 2022-10-18 | 中国人民解放军海军工程大学 | Low-noise closed water-cooling heat dissipation type high-voltage active dynamic reactive power compensation device |
| CN115312480A (en) * | 2022-10-11 | 2022-11-08 | 合肥中恒微半导体有限公司 | DBC substrate for IGBT power module |
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Application publication date: 20150304 |
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