CN102299614A - Semiconductor-refrigeration-based inverter radiating system - Google Patents

Semiconductor-refrigeration-based inverter radiating system Download PDF

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Publication number
CN102299614A
CN102299614A CN201110254475XA CN201110254475A CN102299614A CN 102299614 A CN102299614 A CN 102299614A CN 201110254475X A CN201110254475X A CN 201110254475XA CN 201110254475 A CN201110254475 A CN 201110254475A CN 102299614 A CN102299614 A CN 102299614A
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China
Prior art keywords
heat
semiconductor
fan
inverter
intelligent controller
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Pending
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CN201110254475XA
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Chinese (zh)
Inventor
孙建章
张福兴
王伟
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孙建章
张福兴
王伟
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Application filed by 孙建章, 张福兴, 王伟 filed Critical 孙建章
Priority to CN201110254475XA priority Critical patent/CN102299614A/en
Publication of CN102299614A publication Critical patent/CN102299614A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a semiconductor-refrigeration-based inverter radiating system. The system comprises a semiconductor refrigerator, an intelligent controller and a fan, wherein the cold-end heat-absorbing surface of the semiconductor refrigerator is tightly contacted with a high-power heat-emitting device; the hot-end radiating surface of the semiconductor refrigerator is provided with the fan; and the fan is started under the control of the intelligent controller. The radiating system can radiate the high-power heat-emitting device and has small volume and light weight, the using condition of a component is reduced, and the service life of a product is prolonged.

Description

A kind of inverter cooling system of based semiconductor refrigeration
Technical field
The present invention relates to a kind of photovoltaic DC-to-AC converter structure, particularly a kind of cooling system that is used for the high-power heater members cooling of photovoltaic DC-to-AC converter.
Background technology
The storage of electric energy will solve a lot of problems.At present method in common is generated electricity by way of merging two or more grid systems the photovoltaic electric energy exactly by inverter, when needs use electric energy again to the electrical network power taking.One of them important problem is the conversion efficiency of inverter in the electric energy transfer process, and the loss of inverter is dispersed with the form of heat.The heat that the high-power heater members loss of high power contravariant device is produced can improve the use cost of components and parts widely, the useful life that can reduce components and parts in the inverter again greatly simultaneously.Therefore, how solving the heat dissipation problem of high power contravariant device, is to improve the inverter key issue in useful life.
In general, the peak efficiencies of the inverter of non-isolated power output can reach 96-97%.The power output of supposing inverter is 100KW, and the power loss of this inverter can reach 400W.If add the mode that fan forces heat radiation by traditional metal heat sink, following problem is then arranged: (1) is because the area of metal heat sink is limited, make radiating effect limited, if will be by the mode of increased area, certainly will cause the volume of metal heat sink to strengthen, bring inconvenience such as machine weight increase, machine volume increase; (2), can only be by the increase rotating speed, and the easy like this reliability that causes reduce, and makes that the life-span of inverter is influenced if will improve the radiating effect of powerful fan; (3) above 2 can be caused the temperature of cabinet inside still higher, and in this case, the components and parts of selecting for use must can adapt to higher ambient temperature, cause cost to improve.
Heat conducting mode has 3 kinds, i.e. radiation, convection current, evaporation.Radiation, convection current are traditional radiating modes, are efficient ways in the small power electric source device.Along with the raising of power-supply device use power, although power-supply device has very high conversion efficiency,, the various power losss of circuit all can outwards be dispersed with the form of heat.Present radiator all is to dispel the heat in the mode of radiation, convection current.This radiating mode can not reduce the heat of large power supply equipment machine inside timely and effectively.When if the summer environment temperature is very high, although can improve to the radiator of this form,, fundamentally still can not tackle the heat radiation requirement that increases the power-supply device of power day by day at present.
From radiating principle, this class radiator all belongs to passive heat radiation, and radiating efficiency is not high, can not be fundamentally the temperature of machine intimate be dropped to ambient temperature or below the ambient temperature.
On the other hand, present inverter radiator structure, generally be to adopt evaporator as radiating element, the heat-absorbent surface of evaporator is fully contacted with high-power heater members, the heat that produces when high-power like this heater members is worked is absorbed by evaporator, is distributed by the opposite side of evaporator and the heat exchange of external environment.Yet, the radiating effect of this structure is except being subjected to the volume restrictions of evaporator, also can be subjected to the influence of ambient temperature, according to heat exchange principle, we know that heat always shifts to the low place of temperature from the high place of temperature, and temperature difference is big more, transfer velocity is fast more, like this, if the residing ambient temperature of inverter when higher (as summer outdoor), will cause heat to distribute, thereby shorten the useful life of inverter greatly.
Based on above consideration, the inventor studies improvement to the existing inverter radiator structure, and this case produces thus.
Summary of the invention
Technical problem to be solved by this invention, be at defective in the aforementioned background art and deficiency, a kind of inverter cooling system of based semiconductor refrigeration is provided, it can realize the heat radiation of high-power heater members, reduce the service condition of components and parts, prolong the useful life of product, and volume is little, in light weight.
The present invention is for solving above technical problem, and the technical scheme that is adopted is:
A kind of inverter cooling system of based semiconductor refrigeration, comprise semiconductor cooler, intelligent controller and fan, the cold junction heat-absorbent surface of semiconductor cooler closely contacts with high-power heater members, and the hot-side heat dissipation face then is provided with fan, and described fan starts under the control of intelligent controller.
Above-mentioned cooling system also comprises temperature sensor, and described temperature sensor is located at the cold junction heat-absorbent surface of semiconductor cooler, and is connected with intelligent controller, and the temperature value of gathering is sent into intelligent controller.
After adopting such scheme, the present invention utilizes the semiconductor temperature difference characteristic by semiconductor cooler is set, carry out semi-conductive refrigeration and heat,, will at one end generate heat, other end cooling when the semiconductor chilling plate as electric current---produce the temperature difference, promptly an end heat, other end refrigeration.In conditions such as electric current one timing by semiconductor chilling plate, the temperature difference that heating at one end, other end cooling are caused is certain, so when reducing hot-side temperature, correspondingly the temperature of cold junction also will reduce, and freeze at cold junction thereby can reach better.So, the positive-negative polarity of control circuit and control circuit size of current, can control the size of semiconductor temperature difference, thereby reduce the temperature of high-power heater members, realize the heat radiation of high-power heater members, reduce the service condition of components and parts, prolong the useful life of product, and volume is little, in light weight.
Description of drawings
Fig. 1 is an integrated stand composition of the present invention;
Fig. 2 is the schematic diagram of semiconductor refrigerating.
Embodiment
Below with reference to accompanying drawing, technical scheme of the present invention is elaborated.
As shown in Figure 1, the invention provides a kind of inverter cooling system of based semiconductor refrigeration, comprise semiconductor cooler 1, intelligent controller 2 and fan 3, wherein, the cold junction heat-absorbent surface of semiconductor cooler 1 closely contacts with high-power heater members, the hot-side heat dissipation face then is provided with fan 3, and described fan 3 starts under the control of intelligent controller 2, thereby forced heat radiation is carried out in the hot junction of semiconductor cooler 1.
Cooperate shown in Figure 2, be that semiconductor can be realized the principle schematic that end refrigeration, the other end heat, N, P type semiconductor are oppositely arranged in pairs, one end of the N of every centering, P type semiconductor utilizes metallic conductor 20 to connect, an other end then utilizes metallic conductor 20 to be connected with the semi-conductive free end of different shaped of adjacent N, P type semiconductor centering, and two insulating ceramic films 10 lay respectively at semi-conductive two ends, and are connected with the opposite side of all metallic conductors 20 of this end.This is a known configurations, repeats no more; And this structure can realize that the principle that end refrigeration, the other end heat is: according to the characteristics of thermoelectric effect, adopt the particular semiconductor material thermoelectric pile to freeze, during work, after connecting DC power supply, electronics is triggered by negative pole ("-"), at first passes through P type semiconductor, absorbs heat at this, arrived N type semiconductor, again heat is emitted, every through a NP module, while just there is heat other by being sent to, cause the temperature difference, thereby form cold and hot end.As long as the height of control direct voltage and the specification of semiconductor cooler just can control the speed of cold and hot exchange, thereby the temperature of regulating high-power heater members radiator realize the heat radiation of high-power heater members.
In addition, in the present embodiment, described cooling system also comprises temperature sensor 4, as shown in Figure 1, described temperature sensor 4 is located at the cold junction heat-absorbent surface of semiconductor cooler 1, and real-time collecting temperature is also sent into intelligent controller 2, judges whether to open semiconductor cooler 1 by intelligent controller 2 according to current temperature conditions, thereby the realization purpose of energy saving improves intelligent control.
Above embodiment only for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought that proposes according to the present invention, and any change of being done on the technical scheme basis all falls within the protection range of the present invention.

Claims (2)

1. the inverter cooling system of based semiconductor refrigeration, it is characterized in that: comprise semiconductor cooler, intelligent controller and fan, the cold junction heat-absorbent surface of semiconductor cooler closely contacts with high-power heater members, the hot-side heat dissipation face then is provided with fan, and described fan starts under the control of intelligent controller.
2. the inverter cooling system of a kind of based semiconductor refrigeration as claimed in claim 1, it is characterized in that: described cooling system also comprises temperature sensor, described temperature sensor is located at the cold junction heat-absorbent surface of semiconductor cooler, and be connected with intelligent controller, the temperature value of gathering is sent into intelligent controller.
CN201110254475XA 2011-08-31 2011-08-31 Semiconductor-refrigeration-based inverter radiating system Pending CN102299614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110254475XA CN102299614A (en) 2011-08-31 2011-08-31 Semiconductor-refrigeration-based inverter radiating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110254475XA CN102299614A (en) 2011-08-31 2011-08-31 Semiconductor-refrigeration-based inverter radiating system

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103050284A (en) * 2012-12-22 2013-04-17 合肥聚能新能源科技有限公司 Method for prolonging service life of direct current bus electrolytic capacitors of photovoltaic inverter
CN104035459A (en) * 2014-06-06 2014-09-10 广东美的暖通设备有限公司 Frequency converter and method for controlling temperature of frequency converter
CN105466153A (en) * 2016-01-13 2016-04-06 广东机电职业技术学院 Portable cold and hot insulation box and temperature regulation method thereof
CN110687946A (en) * 2019-11-15 2020-01-14 上海电气富士电机电气技术有限公司 Temperature control method and system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2572660Y (en) * 2002-09-28 2003-09-10 中国科学院电工研究所 DC-DC power source transformer
CN101951130A (en) * 2010-09-10 2011-01-19 江西清华泰豪三波电机有限公司 Semiconductor refrigeration-based inverter double-cavity heat dissipation device
CN202261069U (en) * 2011-08-31 2012-05-30 孙建章 Inverter cooling system based on semiconductor refrigeration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2572660Y (en) * 2002-09-28 2003-09-10 中国科学院电工研究所 DC-DC power source transformer
CN101951130A (en) * 2010-09-10 2011-01-19 江西清华泰豪三波电机有限公司 Semiconductor refrigeration-based inverter double-cavity heat dissipation device
CN202261069U (en) * 2011-08-31 2012-05-30 孙建章 Inverter cooling system based on semiconductor refrigeration

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103050284A (en) * 2012-12-22 2013-04-17 合肥聚能新能源科技有限公司 Method for prolonging service life of direct current bus electrolytic capacitors of photovoltaic inverter
CN103050284B (en) * 2012-12-22 2016-01-20 合肥聚能新能源科技有限公司 Improve the method in photovoltaic DC-to-AC converter DC bus electrochemical capacitor useful life
CN104035459A (en) * 2014-06-06 2014-09-10 广东美的暖通设备有限公司 Frequency converter and method for controlling temperature of frequency converter
CN105466153A (en) * 2016-01-13 2016-04-06 广东机电职业技术学院 Portable cold and hot insulation box and temperature regulation method thereof
CN110687946A (en) * 2019-11-15 2020-01-14 上海电气富士电机电气技术有限公司 Temperature control method and system

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Application publication date: 20111228