CN202652082U - Large power solar energy three-phase grid connected inverter - Google Patents
Large power solar energy three-phase grid connected inverter Download PDFInfo
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- CN202652082U CN202652082U CN 201220282897 CN201220282897U CN202652082U CN 202652082 U CN202652082 U CN 202652082U CN 201220282897 CN201220282897 CN 201220282897 CN 201220282897 U CN201220282897 U CN 201220282897U CN 202652082 U CN202652082 U CN 202652082U
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Abstract
The present utility model relates to the solar energy generating field, especially to a large power solar energy three-phase grid connected inverter. The inverter is realized through the below technical scheme, the power solar energy three-phase grid connected inverter comprises a cabinet, an electrical cabinet, a working transformer, an anode copper bar, a cathode copper bar, a contactor I, a current sensor I, an inversion module, an electric reactor, a three-phase capacitor, a current sensor II, a filter, a contactor II and a breaker, the inversion module comprises at least one group of power module groups, each power module group comprises three power modules, wherein each power module is used for realizing one phase inversion, and each power module is provided with an individual laminated mother bar. A cooling fan required in the inverter has low power and good heat radiation effects.
Description
Technical field
The utility model relates to field of solar thermal power generation, particularly a kind of big-power solar three-phase grid-connected inverter.
Background technology
Contravariant equipment of the prior art, solar three-phase grid-connected inverter such as a 500kw, generally comprise the power model of two 250kw, each power model comprises stack bus bar and the radiator that 3 phase power switching devices are installed, the heat that is caused by 3 phaseswitch losses passes through same radiator and same air-cooled air duct radiation, it is low that too concentrate and the air channel of heat forms the long radiating efficiency of each power model group that causes, weak effect, for device for power switching can be operated in the more rational temperature range, the working temperature that prior art often adopts powerful cooling fan to remedy and lowly brings owing to radiating efficiency raises.
And for example China Patent No. is 200710029765.8 the disclosed air-cooled power inverter power cabinet with large of patent of invention, comprises cabinet and the power cell that is installed in the cabinet inner chamber, and the relative both sides of cabinet are provided with shutter, and the top of cabinet is provided with air exhauster; Power cell is spot distribution or strip distribution at the inner chamber of cabinet, makes and forms the gap between the power cell, and the heat dissipation wind channel of these gaps and power cell forms the air channel at the inner chamber of cabinet, and the inlet scoop of air exhauster is over against the air channel.
And for example China Patent No. is 200910075267.6 the disclosed transducer power module of patent of invention, comprise substrate, the substrate rear portion is fixed with heat-pipe radiator, and the bottom of heat-pipe radiator is provided with hair-dryer, the top is provided with air inducing pipeline, is provided with air exhauster in the air inducing pipeline; It is in running, the heat that power device sends is transmitted on the heat-pipe radiator by substrate, and under the effect of heat-pipe radiator bottom hair-dryer, dissipation of heat is in air inducing pipeline, in air inducing pipeline under the effect of air exhauster, heat is extracted into rapidly the frequency-charger cabinet external body afterwards.
Above-mentioned two disclosed power cabinets of patent generally also are to consist of by a plurality of power models are stacked, each power model is realized A, B, the unsteady flow of three phase places of C, and comprise for several device for power switching of realizing 3 phase place unsteady flows, 1 stack bus bar, 1 module radiator and some electric capacity, in this system, the unsteady flow of three phase places of ABC will be exported by the same stack bus bar, the thermal losses that unsteady flow produces will be by the same heat sink radiates, therefore, whole power model adopts same air channel and same radiator heat-dissipation, therefore, the air-cooled form fetch of this kind is generally vertically and is longer, and needs to adopt the larger air exhauster of power, thereby energy consumption is larger.
The utility model content
The purpose of this utility model provides a kind of big-power solar three-phase grid-connected inverter, and the required cooling fan power of this kind inverter is lower, and has preferably radiating effect.
Above-mentioned technical purpose of the present utility model is achieved by the following technical programs: the big-power solar three-phase grid-connected inverter, comprise cabinet, regulator cubicle, Working transformer, anodal copper bar, the negative pole copper bar, the contactor one that is connected with anodal copper bar, detect the current sensor one of contactor one leading-out terminal electric current, the inversion module that all is connected with contactor one and negative pole copper bar, the reactor that is connected with inversion module, the three phase capacitance in parallel with reactor, detect the current sensor two of reactor and three phase capacitance output end current, the filter that is connected with the reactor output, the contactor two that is connected with filter, the circuit breaker that is connected with contactor two, described inversion module comprises at least one group of power model group, described power model group comprises three power models that each is used for realizing a phase place unsteady flow, and each power model has independent stack bus bar.
Three power models of the power model group of this kind three-phase grid-connected inverter all have independently stack bus bar, and therefore, each power model can have independently radiator; In the prior art, because the high-power switch device of three phase places all concentrates on the piece stack bus bar by same radiator heat-dissipation, the air channel of too concentrating and causing owing to radiator area is huge of heat forms long so that the radiating efficiency of each power model group is low, weak effect, therefore, need to adopt the cooling fan of higher-wattage; The utility model is owing to three separate settings of power model, and heat radiation power and the fetch in each air channel reduce greatly, so adopt the blower fan of smaller power just can obtain preferably radiating effect.
As of the present utility model preferred, each power model comprises the IGBT assembly that is positioned at corresponding stack bus bar top, the capacitance component that is positioned at the stack bus bar bottom.
On lengthwise position, capacitance component generally all is arranged at cabinet top in the prior art, because heat all can be to external radiation, particularly upwards radiation, therefore, particularly the IGBT assembly of below also can have larger thermal radiation impact to capacitance component, and therefore, capacitance component heat radiation of the prior art is relatively poor; The utility model is because each power model be independent the setting, so the impact of the heat radiation between the power model of out of phase is less, and owing to the above-mentioned distribution form of capacitance component and IGBT assembly so that capacitance component be subjected to the IGBT assembly thermal-radiating affect less.
As of the present utility model preferred, IGBT assembly and the capacitance component of described each power model is positioned at the same side of corresponding stack bus bar.
Above-mentioned setting of the present utility model then is conducive to make the volume of power model group more compact, is conducive to reduce the volume of power model group.
As of the present utility model preferred, described power model laterally distributes side by side; Each power model also comprises for the radiator to the IGBT assembly radiating; The wherein radiator of a pair of adjacent power module of each power model group distributes in opposite directions.
Above-mentioned setting, so that two adjacent power modules that radiator distributes in opposite directions can use one group of blower fan to dispel the heat simultaneously, two radiators in opposite directions just in time form one and are used for air-cooled air channel; When unsteady flow power needs two groups of power model groups, although the utility model needs three groups of blower fans to dispel the heat, though and prior art only needs two groups of blower fans, but because one group of blower fan needs three power models are dispelled the heat simultaneously simultaneously in the prior art, so its required heat radiation total amount approximately is of the present utility model 150%, simultaneously because stack bus bar area used in the prior art approximately is 3 times of the present utility model, so the air-cooled stroke of prior art is about 2 times of the present utility model; Therefore, compared to existing technology, the utlity model has higher radiating efficiency, simultaneously required fan power is less, and radiation energy consumption is lower, and simultaneously, compared to existing technology, the utility model more is conducive to reduce the working temperature of IGBT assembly; In the prior art, power model is more flat rectangular shape, volume be use module in the utility model 3-4 doubly, so be difficult to when mounted to consider cabinet inside laterally, vertically and the space availability ratio of depth direction, power model in the utility model is because small volume, thus comparatively flexible, therefore, space availability ratio of the present utility model is higher, and equipment volume and floor space are then less; In the prior art, in order to satisfy the needs of heat radiation, equipment tends to adopt the cooling fan of relatively high power and wider air channel, and the space of cabinet inside is not very well-to-do, so these blower fans often are installed in the cabinet outside, the air channel of power model and cooling fan can be installed on cabinet inside in the utility model, so equipment has more regular profile and lower wind is made an uproar in the utility model; Secondly, also dismounting and maintenance, maintenance so that the utility model is more convenient for of the design of this small modular of the utility model.
As of the present utility model preferred, each power model also comprises the module carrier that is fixedly connected with radiator, and described IGBT assembly is fixed in radiator.
Above-mentioned setting is so that the weight of IGBT assembly, radiator is all born by module carrier; The weight of IGBT assembly is not to be born by stack bus bar, thereby reduces the heavy burden of stack bus bar, in long-term the use, avoids the deformation of stack bus bar, thereby improves the useful life of stack bus bar.
As of the present utility model preferred, each power model also comprises and is fixed in the capacitance bracket module carrier bottom and that be used for being fixedly connected with capacitance component.
Above-mentioned setting so that the weight of capacitance component marries again on the module carrier by capacitance bracket, rather than is born by stack bus bar, thereby further reduce the heavy burden of stack bus bar, in long-term the use, further avoid the deformation of stack bus bar, thereby improve the useful life of stack bus bar.
As of the present utility model preferred, the electrode contact of described stack bus bar all is positioned at the lower end of stack bus bar.
In the utility model, each power model has independently output; Power model group of the prior art is owing to only having a stack bus bar, and therefore, outlet is relatively concentrated, and the wiring difficulty of soft or hard copper bar is also larger; The electrode contact of the utility model stack bus bar all is positioned at the lower end of stack bus bar, and stack bus bar goes out line position and reactor inlet wire position all is positioned at same plane in the depth direction, therefore can be directly with phase place output access reactor, thereby when reducing the wiring difficulty, reduced the use of copper busbar, provided cost savings.
In sum, the utlity model has following beneficial effect: the utility model volume is little, radiating efficiency is higher and be convenient to single face maintenance, maintenance and dismounting, and space availability ratio is high, and has good radiating effect; In addition, because cooling fan power is little and can be installed on cabinet inside, so the noise of this equipment is also less; The utlity model has preferably radiating effect, thereby be conducive to reduce the working temperature of IGBT assembly, and then be conducive to improve inversion efficiency.
Description of drawings
Fig. 1 is the embodiment front view, and for showing internal components, the chamber door in cabinet front is not shown;
Fig. 2 is the embodiment rearview, and for showing internal components, the chamber door at the cabinet back side is not shown;
Fig. 3 is the single power model axis of no-feathering of embodiment view;
Fig. 4 is the distribution schematic diagram of two adjacent power modules distributing in opposite directions of radiator, for clearlying show that the structure of these two adjacent power modules, the internal components of power model only is shown among the figure.
Among the figure, 101, cabinet, 5, inversion module, 12, the negative pole copper bar, 2, contactor one, 11, anodal copper bar, 41, current sensor one, 6, reactor, 3, three phase capacitance, 42, current sensor two, 7, filter, 8, contactor two, 9, circuit breaker, 103, the output copper bar, 1011, left chamber, 1012, the right ventricle, 1013, dividing plate, 102, regulator cubicle, 10, Working transformer, 51, module carrier, 514, radiator, 52, capacitance bracket, 512, the IGBT assembly, 513, capacitance component, 511, stack bus bar, 515, cover plate, 5111, electrode contact, 1041, air-cooled air channel, 104, cooling fan.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
This specific embodiment only is to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make the modification that does not have creative contribution to the present embodiment as required after reading this specification, but as long as all are subject to the protection of Patent Law in claim scope of the present utility model.
Embodiment: a kind of unsteady flow power is the solar three-phase grid-connected inverter of 500kw, shown in Fig. 1-2, comprises cabinet 101, is located at the inversion module 5 in the cabinet 101; Inversion module 5 comprises two power model groups that can realize three-phase inversion, and each power model group can realize the inverter power of 250kw; Each power model group comprises that three difference can realize the power model of a phase place inversion.
The negative input of two power model groups directly is connected with negative pole copper bar 12; The electrode input end of two power model groups all is connected with respectively contactor 1, and two contactors 1 are connected with respectively anodal copper bar 11; And the output of each contactor 1 also is provided with the current sensor 1 for detection of this end electric current; Three phase place outputs of each power model group are connected to corresponding reactor 6, reactor 6 also is parallel with three phase capacitance 3, the output of reactor 6 and three phase capacitance 3 also is provided with the current sensor 2 42 for detection of this end electric current, reactor 6 is connected with filter 7 with the output of three phase capacitance 3, filter 7 is connected with contactor 28, contactor 28 is connected with circuit breaker 9, and circuit breaker 9 connects output copper bar 103.
As shown in Figure 3, each power model comprise module carrier 51, be fixed in radiator 514 on the module carrier 51, be fixed in module carrier 51 bottoms capacitance bracket 52, be fixed in radiator 514 IGBT assembly 512, be fixed in capacitance bracket 52 capacitance component 513, connect IGBT assembly 512 and capacitance component 513 stack bus bar 511, be fixed in the cover plate 515 of module carrier 51; IGBT assembly 512 is positioned at capacitance component 513 tops, and IGBT assembly 512 and capacitance component 513 all are positioned at the same side of corresponding stack bus bar 511; Radiator 514 is used for IGBT assembly 512 is dispelled the heat; The electrode contact 5111 of stack bus bar 511 all is positioned at the lower end of stack bus bar 511, and electrode contact 5111 is positive negative input contact and phase place output contact.
Referring to Fig. 1,2 and Fig. 4, power model laterally distributes side by side; Wherein have the adjacent power module that three pairs of radiators 514 distribute in opposite directions, form air-cooled air channel 1041 between every pair of radiator 514 that distributes in opposite directions, be provided with one group for each air-cooled air channel 1041 and be positioned at this to the cooling fan 104 of radiator 514 sides.
Claims (7)
1. big-power solar three-phase grid-connected inverter, comprise cabinet (101), regulator cubicle (102), Working transformer (10), anodal copper bar (11), negative pole copper bar (12), the contactor one (2) that is connected with anodal copper bar (11), detect the current sensor one (41) of contactor one (2) leading-out terminal electric current, the inversion module (5) that all is connected with contactor one (2) and negative pole copper bar (12), the reactor (6) that is connected with inversion module (5), the three phase capacitance (3) in parallel with reactor (6), detect the current sensor two (42) of reactor (6) and three phase capacitance (3) output end current, the filter (7) that is connected with reactor (6) output, the contactor two (8) that is connected with filter (7), the circuit breaker (9) that is connected with contactor two (8), it is characterized in that, described inversion module (5) comprises at least one group of power model group, described power model group comprises three power models that each is used for realizing a phase place unsteady flow, and each power model has independent stack bus bar (511).
2. a kind of big-power solar three-phase grid-connected inverter according to claim 1, it is characterized in that, each power model comprises the IGBT assembly (512) that is positioned at corresponding stack bus bar (511) top, the capacitance component (513) that is positioned at stack bus bar (511) bottom.
3. a kind of big-power solar three-phase grid-connected inverter according to claim 2 is characterized in that, the IGBT assembly (512) of described each power model and capacitance component (513) are positioned at the same side of corresponding stack bus bar (511).
4. according to claim 1 and 2 or 3 described a kind of big-power solar three-phase grid-connected inverters, it is characterized in that, described power model laterally distributes side by side; Each power model also comprises for the radiator (514) to the IGBT assembly radiating; The wherein radiator of a pair of adjacent power module (514) of each power model group distributes in opposite directions.
5. a kind of big-power solar three-phase grid-connected inverter according to claim 4, it is characterized in that, each power model also comprises the module carrier (51) that is fixedly connected with radiator (514), and described IGBT assembly (512) is fixed in radiator (514).
6. a kind of big-power solar three-phase grid-connected inverter according to claim 5 is characterized in that, each power model also comprises and is fixed in capacitance bracket (52) module carrier (51) bottom and that be used for being fixedly connected with capacitance component (513).
7. a kind of big-power solar three-phase grid-connected inverter according to claim 1 is characterized in that, the electrode contact (5111) of described stack bus bar (511) all is positioned at the lower end of stack bus bar (511).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220282897 CN202652082U (en) | 2012-06-15 | 2012-06-15 | Large power solar energy three-phase grid connected inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220282897 CN202652082U (en) | 2012-06-15 | 2012-06-15 | Large power solar energy three-phase grid connected inverter |
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| Publication Number | Publication Date |
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| CN202652082U true CN202652082U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220282897 Expired - Fee Related CN202652082U (en) | 2012-06-15 | 2012-06-15 | Large power solar energy three-phase grid connected inverter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723878A (en) * | 2012-06-15 | 2012-10-10 | 上方能源技术(杭州)有限公司 | High-power solar three-phase grid-connected inverter |
| CN109474188A (en) * | 2018-12-29 | 2019-03-15 | 徐州中矿大传动与自动化有限公司 | Three level high-voltage high-power water-cooling frequency convertor system |
| CN109905013A (en) * | 2017-12-11 | 2019-06-18 | 中车永济电机有限公司 | Traction current transformation cabinet |
-
2012
- 2012-06-15 CN CN 201220282897 patent/CN202652082U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723878A (en) * | 2012-06-15 | 2012-10-10 | 上方能源技术(杭州)有限公司 | High-power solar three-phase grid-connected inverter |
| CN102723878B (en) * | 2012-06-15 | 2015-03-04 | 上方能源技术(杭州)有限公司 | High-power solar three-phase grid-connected inverter |
| CN109905013A (en) * | 2017-12-11 | 2019-06-18 | 中车永济电机有限公司 | Traction current transformation cabinet |
| CN109474188A (en) * | 2018-12-29 | 2019-03-15 | 徐州中矿大传动与自动化有限公司 | Three level high-voltage high-power water-cooling frequency convertor system |
| CN109474188B (en) * | 2018-12-29 | 2024-03-15 | 江苏国传电气有限公司 | Three-level high-voltage high-power water-cooling frequency converter system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Jun Inventor after: Luo Li Inventor after: Zhu Runhua Inventor after: Ge Chengjie Inventor before: Zhao Jun Inventor before: Luo Li Inventor before: Ye Baochun |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHAO JUN LUO LI YE BAOCHUN TO: ZHAO JUN LUO LI ZHU RUNHUA GE CHENGJIE |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20160615 |