CN206890908U - One kind group string data photovoltaic DC-to-AC converter - Google Patents
One kind group string data photovoltaic DC-to-AC converter Download PDFInfo
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- CN206890908U CN206890908U CN201621157412.7U CN201621157412U CN206890908U CN 206890908 U CN206890908 U CN 206890908U CN 201621157412 U CN201621157412 U CN 201621157412U CN 206890908 U CN206890908 U CN 206890908U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides a kind of group string data photovoltaic DC-to-AC converter, for water surface photovoltaic station, including housing, has inner chamber, the refrigerator hot junction opening being in communication with the outside is formed on the housing of inner chamber side；The outer surface of housing is provided with waterproof terminal component；Semiconductor cooler, in inner chamber, with positioned at the refrigerator hot junction of positive and negative and refrigerator cold end, refrigerator hot junction sets towards refrigerator hot junction opening and is exposed to the external world by refrigerator hot junction, hot junction boss is provided with refrigerator hot junction, is tightly connected by hot end seal circle with corresponding shell inner surface；Main power transistor group, in inner chamber and it is located at refrigerator cold end side, main power transistor group is connected with waterproof terminal component.The utility model creatively controls inverter internal temperature in group string data photovoltaic DC-to-AC converter using semiconductor cooler, and disclosure satisfy that inverter sealing requirements, suitable for water surface photovoltaic station.
Description
Technical field
It the utility model is related to photovoltaic plant technology field, and in particular to a kind of group string data light for water surface photovoltaic power station
Lie prostrate inverter.
Background technology
In recent years, photovoltaic plant is greatly developed in the whole world, especially with rivers, ocean, lake, reservoir construction
Water surface photovoltaic power station is increasingly becoming the first choice of photovoltaic generation project.Water surface photovoltaic power station addressing will not only consider the broad shape in waters
Condition, it is also contemplated that equipment and the sealing waterproof of component, corrosion-resistant, anti-aging, protection against electric shock performance, waterproof fireproofing protection against electric shock and anti-
Aging turns into the key for ensureing water surface photovoltaic power station safe operation.
Existing photovoltaic DC-to-AC converter mainly includes centralized photovoltaic DC-to-AC converter and group string data photovoltaic DC-to-AC converter.Compared to centralization
Photovoltaic DC-to-AC converter, group string data photovoltaic DC-to-AC converter AC line is short out, and electric current is small, and area occupied is small, without computer room, safeguards replacing side
Just, it is more suitable for water surface photovoltaic station.
About 8000 hours, 65 DEG C life-span during about 2000 hours, 85 DEG C life-span under the conditions of 105 DEG C of the temperature internally of inverter
Shi Shouming about 32000 hours, the internal temperature of inverter directly affects the electrolytic capacitor life-span, and organizes string data photovoltaic DC-to-AC converter
Core devices power switch is more sensitive to temperature, and temperature is too high to be caused performance degradation or even damage, therefore heat-sinking capability is determined
The single-machine capacity in certain volume is determined, the quality of heat sink conception decides the performance and quality of product.
Existing group of string data photovoltaic DC-to-AC converter is disclosed by fan cooling, such as Chinese patent literature CN101651427B
A kind of ventilation heat abstractor of inverter, including the fan installed in casing inner bottom part, are fixed on installed in fan outlet
Fan guard on the outside of casing, the fan guard bottom are provided with the circular deep gouge of several concentrics, and the side wall of annulus deep gouge is opened
There are multiple air vents, sponge block is attached with casing lateral surface in fan guard.In addition, existing group of string data photovoltaic DC-to-AC converter is anti-
It is relatively low to protect grade, 60 kilowatts of group string data photovoltaic DC-to-AC converter unit peak power, (IP degree of protection is by two to degree of protection IP65
Numeral is formed, the grade that the 1st numeral represents dust-proof, prevents foreign object from invading, and the 2nd numeral represents anti-moisture, waterproof intrusion
Tightness, numeral it is bigger expression degree of protection it is higher).
Due to said fans radiating mode and the relatively low limitation of degree of protection, existing group of string data photovoltaic inversion is determined
Device may be only available for ground photovoltaic station, in use, in the environment of the wind and waves of water surface photovoltaic power station due to degree of protection not
The enough and undesirable risk for causing to be also easy to produce burn into aging, fire or electric shock of heat sink conception.Safe and reliable group is there is no at present
String data photovoltaic DC-to-AC converter is applied to water surface photovoltaic power station.
Utility model content
The utility model aims to provide a kind of group string data photovoltaic DC-to-AC converter for water surface photovoltaic station, to solve prior art
Group string data photovoltaic DC-to-AC converter degree of protection is low, heat sink conception is undesirable and the defects of cause that water surface photovoltaic station can not be applicable.
The utility model is as follows using technical scheme：
One kind group string data photovoltaic DC-to-AC converter, including housing have inner chamber, formed on the housing of the inner chamber side and
The refrigerator hot junction opening of external world's connection；The outer surface of the housing is provided with waterproof terminal component；Semiconductor cooler, located at institute
State in inner chamber, have positioned at the refrigerator hot junction of positive and negative and refrigerator cold end, the refrigerator hot junction is towards the refrigerator
Hot junction opening sets and is exposed to the external world by the refrigerator hot junction, is provided with hot junction boss at the refrigerator hot junction, passes through
Hot end seal circle is tightly connected with corresponding shell inner surface；Main power transistor group, in the inner chamber and positioned at described
Refrigerator cold end side, the main power transistor group are connected with the waterproof terminal component.
Preferably, in addition to outer heat abstractor, the refrigerator hot junction is sealingly fastened in, for expanding the refrigerator heat
Area of dissipation is held, the outer heat abstractor stretches out the hull outside by refrigerator hot junction opening.
Preferably, the outer heat abstractor include from the refrigerator hot junction to refrigerator hot junction opening direction on housing according to
The secondary outer regenerative block for being arranged on the refrigerator hot junction and outer heat sink, the area of the outer heat sink are more than refrigerator heat
The area at end.
Preferably, the outer regenerative block is connected the area and refrigerator hot junction area of one end with the refrigerator hot junction
About the same, the area of the one end that is connected with the outer heat sink is more than refrigerator hot junction area, but is less than the outer radiating
The area of plate.
Preferably, the outer regenerative block, outer heat sink are made up with the housing of same kind of stainless steel.
Preferably, in addition to interior cold-storage device, between the refrigerator cold end and the main power transistor group, use
It is adjusted in the caloric value to the refrigerator cold end to prevent from condensing at refrigerator cold end.
Preferably, the interior cold-storage device is included from the refrigerator cold end to the main power transistor group direction successively
The interior cold radiation plate and interior cool accumulating block set, the area of the interior cold radiation plate are more than the area of the refrigerator cold end.
Preferably, the interior cool accumulating block, interior cold radiation plate are made up of the aluminium of solid copper or anodized.
Preferably, the housing includes covering on lower house and lower house, and the lower house is provided with the inner chamber and the system
Cooler hot junction opening, the case top lid are provided with the waterproof terminal component, and lid passes through at least two groups elasticity on the lower house
Sealing ring seals with the lower house, covers on the lower house and is detachably connected with the lower house.
Preferably, the waterproof terminal component include photovoltaic component DC input waterproof terminal, output waterproof terminal and
OT waterproof terminals.
Technical solutions of the utility model, have the following advantages that：
1. provided by the utility model group of string data photovoltaic DC-to-AC converter, creatively in group string data photovoltaic DC-to-AC converter using half
Conductor refrigerator controls inverter internal temperature, and disclosure satisfy that inverter sealing requirements, suitable for water surface photovoltaic station.Half
The refrigerator hot junction of conductor refrigerator is exposed to the external world by refrigerator hot junction opening, when a group string data photovoltaic DC-to-AC converter is placed in water
When, the caloric value in refrigerator hot junction is transmitted in water；Hot junction boss is provided with refrigerator hot junction, by hot end seal circle with it is corresponding
Shell inner surface be tightly connected so that inverter of the present utility model generally all-sealed structure, compared to existing group string
Formula photovoltaic DC-to-AC converter, degree of protection are improved, and increase service life.
2. provided by the utility model group of string data photovoltaic DC-to-AC converter, by setting outer radiating dress on the outside of refrigerator cold end
To put, expand refrigerator hot-side heat dissipation area, during work, refrigerator hot junction is conducted heat in water by outer heat abstractor,
This kind sets the heat-sinking capability for further increasing semiconductor cooler, is advantageous to further reduce inverter internal temperature, makes
Further extended with the life-span.
3. provided by the utility model group of string data photovoltaic DC-to-AC converter, its outer heat abstractor includes outer regenerative block and outer radiating
Plate, outer regenerative block is by the accumulation of heat in refrigerator hot junction and passes to outer heat sink, and the area of outer heat sink is more than refrigerator
The area in hot junction, therefore more quickly can conduct heat in water；Outer construction for heat radiating device is simple, and manufacturing cost is low, but
Radiating effect is obvious.Outer heat sink can adjust area according to refrigerator hot junction caloric value, applied widely.
4. provided by the utility model group of string data photovoltaic DC-to-AC converter, by refrigerator cold end and main power transistor group it
Between set in cold-storage device, for carrying out cool tone section to refrigerator cold end, to prevent refrigerator, condensed at cold end, be advantageous to prolong
Long life.
5. provided by the utility model group of string data photovoltaic DC-to-AC converter, its interior cold-storage device includes interior cool accumulating block and interior cold scattering
Plate, interior cold radiation plate can adjust area according to main power amplifier board transistor group caloric value, prevent refrigerator cold end from condensing.
6. provided by the utility model group of string data photovoltaic DC-to-AC converter, power loss caused by no temperature rise, possess good
Overload capacity, the active power more than rated capacity can be exported while Reactive Power Dispatch is responded, be more than super with design
When 1.3: 1, can long term overloading volume stable operation do not drop, degree of protection, anticorrosion, ageing-resistant ability exceed photovoltaic plant 25 years
Average life span.
7. provided by the utility model group of string data photovoltaic DC-to-AC converter, big using rivers ocean lake and reservoir specific heat capacity, unit
The capacity of heat transmission of volume is strong, is immersed in the direct heat conduction of heater element heat in water body into water, hot caused by photovoltaic DC-to-AC converter
Amount causes water temperature is elevated to influence negligible, accomplishes not fetch water, be pollution-free, without discharge, noiseless, non-maintaining, no
Water environmental impact can be produced.
8. provided by the utility model group of string data photovoltaic DC-to-AC converter, international degree of protection certification IP67 can be reached, ensure
Even if being sunk under the water under the unexpected state such as typhoon will not also intake in 1 meter, 30 minutes.
9. provided by the utility model group of string data photovoltaic DC-to-AC converter, aluminium electrolutic capacitor internally makes under the conditions of 65 DEG C of temperature
It is more than 32000 hours with the life-span, the utility model in 30 DEG C or so of environment water temperature, test main power amplifier board temperature rise and do not surpass by full power
35 DEG C are crossed, shell body temperature is no more than 30 DEG C.Calculated by water surface photovoltaic power station annual 1200 gas-to electricity hour, inverter member device
Part heat affecting service life is more than 26 years.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the partial sectional view for the group string data photovoltaic DC-to-AC converter that the utility model embodiment provides；
Fig. 2 is the partial sectional view for increasing outer heat abstractor on Fig. 1 group string data photovoltaic DC-to-AC converters；
Fig. 3 is the partial sectional view of the cold-storage device in increase on Fig. 1 group string data photovoltaic DC-to-AC converters；
Fig. 4 is the partial sectional view for increasing outer heat abstractor and interior cold-storage device on Fig. 1 group string data photovoltaic DC-to-AC converters；
Fig. 5 is the work shape that the group string data photovoltaic DC-to-AC converter that the utility model embodiment provides is vertically arranged in water
State figure.
Description of reference numerals：1- refrigerator cold ends；Cool accumulating block in 2-；3- flexible collars；The main power amplifier board transistor groups of 4-；5-
Lower house；6- horizontal planes；7-OT waterproof terminals；8- exports waterproof terminal；Covered on 9- lower houses；10- photovoltaic component DCs input
Waterproof terminal；11- refrigerators hot junction；12- hot end seal circles；The outer regenerative blocks of 13-；The outer heat sinks of 14-；Cold radiation plate in 15-.
Embodiment
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Conflict can is not formed to be combined with each other.
Embodiment one
Fig. 1 is the partial sectional view for the group string data photovoltaic DC-to-AC converter that the utility model embodiment provides.As shown in figure 1, this
Embodiment provide a kind of group string data photovoltaic DC-to-AC converter for water surface photovoltaic station, including hermetically sealed housing, semiconductor cooler,
Main power transistor group 4 and waterproof terminal component.The wherein group string data photovoltaic DC-to-AC converter of waterproof terminal component and prior art
Waterproof terminal component it is similar, respectively photovoltaic module input waterproof terminal, output waterproof terminal 8 and OT waterproof terminals 7, no
With in utility model the present embodiment, photovoltaic component DC input waterproof terminal 10, output waterproof terminal 8 and OT prevent
Water end (W.E.) 7 reaches international degree of protection certification IP67 terminal from degree of protection.
Hermetically sealed housing is in lid 9 in flat, including lower house 5 and lower house, and lid 9 passes through 2-3 groups elasticity on lower house
Sealing ring seals with lower house 5；For convenient disassembly, lid 9 is detachably connected with lower house 5 on lower house.
Inner chamber is provided with lower house 5, the refrigerator heat being in communication with the outside is formed on the lower house 5 of the inner chamber side
The opening of end 11；Semiconductor cooler is located in inner chamber, and semiconductor cooler has positioned at the refrigerator hot junction 11 of positive and negative and system
Cooler cold end 1, refrigerator hot junction 11 is open towards refrigerator hot junction 11 to be set and is exposed to the external world by refrigerator hot junction 11, is made
Hot junction boss is additionally provided with cooler hot junction 11, is tightly connected by hot end seal circle 12 with corresponding shell inner surface.
Main power transistor group 4 is located in the inner chamber and is located at the side of refrigerator cold end 1, the main power crystal
Pipe group 4 is electrically connected with photovoltaic module input waterproof terminal, output waterproof terminal 8 and OT waterproof terminals 7.
During work, when a group string data photovoltaic DC-to-AC converter is placed in water, the caloric value in refrigerator hot junction 11 is transmitted in water；System
Hot junction boss is provided with cooler hot junction 11, is tightly connected by hot end seal circle 12 with corresponding shell inner surface so that this reality
With new inverter generally all-sealed structure, compared to existing group string data photovoltaic DC-to-AC converter, degree of protection is improved
Degree of protection increases service life up to IP67.
Embodiment two
Fig. 2 is the partial sectional view for increasing outer heat abstractor on Fig. 1 group string data photovoltaic DC-to-AC converters；As shown in Fig. 2 this reality
Apply example and a kind of group string data photovoltaic DC-to-AC converter for water surface photovoltaic station is provided, the difference of itself and embodiment one is：
The group string data photovoltaic DC-to-AC converter of the present embodiment also includes the outer heat abstractor for being sealingly fastened in refrigerator hot junction 11,
In the present embodiment, outer heat abstractor is fixed on refrigerator hot junction 11 with ageing-resistant strong sealing glue.The effect of outer heat abstractor is
Expand the area of dissipation of refrigerator hot junction 11, outer heat abstractor stretches out the hull outside by the refrigerator hot junction 11 opening.
During work, refrigerator hot junction 11 is conducted heat in water by outer heat abstractor, and this kind sets and further increase semiconductor
The heat-sinking capability of refrigerator, be advantageous to further reduce inverter internal temperature, service life is further extended.
Specifically, outer heat abstractor is included from the refrigerator hot junction 11 to the openings of refrigerator hot junction 11 on housing
To the outer regenerative block 13 and outer heat sink 14 for being successively set on the refrigerator hot junction 11, the area of the outer heat sink 14 is more than
The area in the refrigerator hot junction 11.The outer regenerative block 13 is connected the area and the system of one end with the refrigerator hot junction 11
The area of cooler hot junction 11 is about the same, and the area of the one end that is connected with the outer heat sink 14 is more than the face of refrigerator hot junction 11
Product, but less than the area of the outer heat sink 14.By setting outer heat abstractor in the outside of refrigerator cold end 1, refrigeration is expanded
The area of dissipation of device hot junction 11, during work, refrigerator hot junction 11 is conducted heat in water by outer heat abstractor, this kind set into
One step improves the heat-sinking capability of semiconductor cooler, is advantageous to further reduce inverter internal temperature, service life obtains
Further extend.Outer regenerative block 13 is by the accumulation of heat in refrigerator hot junction 11 and passes to outer heat sink 14, outer heat sink 14
Area be more than the area in refrigerator hot junction 11, therefore more quickly can conduct heat in water；Outer construction for heat radiating device
Simply, manufacturing cost is low, but radiating effect is obvious.Outer heat sink 14 can adjust area according to the caloric value of refrigerator hot junction 11, fit
It is wide with scope.
The outer regenerative block 13, outer heat sink 14 are made up with the housing of same kind of stainless steel.
Embodiment three
Fig. 3 is the partial sectional view of the cold-storage device in increase on Fig. 1 group string data photovoltaic DC-to-AC converters；As shown in figure 3, this reality
Apply example and a kind of group string data photovoltaic DC-to-AC converter for water surface photovoltaic station is provided, the difference of itself and embodiment one is：
The group string data photovoltaic DC-to-AC converter that the present embodiment provides also includes brilliant located at the refrigerator cold end 1 and the main power
Interior cold-storage device between body pipe group 4, the effect of interior cold-storage device are the caloric value of the refrigerator cold end 1 is adjusted
To prevent from condensing at refrigerator cold end 1.
Specifically, the interior cold-storage device include from the refrigerator cold end 1 to the main direction of power transistor group 4 according to
The interior cold radiation plate 15 and interior cool accumulating block 2 of secondary setting, the area of the interior cold radiation plate 15 are more than the area of the refrigerator cold end 1,
Interior cold radiation plate 15 can adjust area according to main power amplifier board transistor group caloric value, prevent refrigerator cold end 1 from condensing, be advantageous to extend
Service life.
The interior cool accumulating block 2, interior cold radiation plate 15 are made up of the aluminium of solid copper or anodized.
Example IV
Fig. 4 is the partial sectional view for increasing outer heat abstractor and interior cold-storage device on Fig. 1 group string data photovoltaic DC-to-AC converters；Such as
Shown in Fig. 4, as preferred embodiment of the present utility model, the present embodiment provides a kind of group string data photovoltaic for water surface photovoltaic station
Inverter, the difference of itself and embodiment one are：
The group string data photovoltaic DC-to-AC converter that the present embodiment provides, in addition to outer heat abstractor and interior cold-storage device.Wherein, it is outer to dissipate
Thermal is fixed on refrigerator hot junction 11 with ageing-resistant strong sealing glue.The effect of outer heat abstractor is to expand refrigerator hot junction 11
Area of dissipation, outer heat abstractor stretch out the hull outside by the refrigerator hot junction 11 opening.During work, refrigerator hot junction
11 are conducted heat in water by outer heat abstractor, and this kind sets the heat-sinking capability for further increasing semiconductor cooler,
Be advantageous to further reduce inverter internal temperature, service life is further extended.
Specifically, outer heat abstractor is included from the refrigerator hot junction 11 to the openings of refrigerator hot junction 11 on housing
To the outer regenerative block 13 and outer heat sink 14 for being successively set on the refrigerator hot junction 11, the area of the outer heat sink 14 is more than
The area in the refrigerator hot junction 11.The outer regenerative block 13 is connected the area and the system of one end with the refrigerator hot junction 11
The area of cooler hot junction 11 is about the same, and the area of the one end that is connected with the outer heat sink 14 is more than the face of refrigerator hot junction 11
Product, but less than the area of the outer heat sink 14.By setting outer heat abstractor in the outside of refrigerator cold end 1, refrigeration is expanded
The area of dissipation of device hot junction 11, during work, refrigerator hot junction 11 is conducted heat in water by outer heat abstractor, this kind set into
One step improves the heat-sinking capability of semiconductor cooler, is advantageous to further reduce inverter internal temperature, service life obtains
Further extend.Outer regenerative block 13 is by the accumulation of heat in refrigerator hot junction 11 and passes to outer heat sink 14, outer heat sink 14
Area be more than the area in refrigerator hot junction 11, therefore more quickly can conduct heat in water；Outer construction for heat radiating device
Simply, manufacturing cost is low, but radiating effect is obvious.Outer heat sink 14 can adjust area according to the caloric value of refrigerator hot junction 11, fit
It is wide with scope.
The outer regenerative block 13, outer heat sink 14 are made up with the housing of same kind of stainless steel.
Interior cold-storage device is located between the refrigerator cold end 1 and the main power transistor group 4, and its role is to institute
The caloric value for stating refrigerator cold end 1 is adjusted to prevent from condensing at refrigerator cold end 1.
Specifically, the interior cold-storage device include from the refrigerator cold end 1 to the main direction of power transistor group 4 according to
The interior cold radiation plate 15 and interior cool accumulating block 2 of secondary setting, the area of the interior cold radiation plate 15 are more than the area of the refrigerator cold end 1,
Interior cold radiation plate 15 can adjust area according to main power amplifier board transistor group caloric value, prevent refrigerator cold end 1 from condensing, be advantageous to extend
Service life.
The interior cool accumulating block 2, interior cold radiation plate 15 are made up of the aluminium of solid copper or anodized.
In order to which main power amplifier board transistor group, semiconductor cooler, outer heat abstractor and interior cold-storage device are fixed on into shell
On body, the group string data photovoltaic DC-to-AC converter of the present embodiment also includes flexible collar 3, and the one end of flexible collar 3 is welded on shell inner surface
On, the other end by main power transistor group 4, interior cool accumulating block 2, interior cold radiation plate 15 and semiconductor cooler hoop together.Elasticity
The thickness 1-2 millimeters of clip 3, make of stainless steel plate.One group of flexible collar 33 two, one end is welded in shell inner surface, separately
Block main power amplifier board transistor group 4, interior cool accumulating block 22, interior cold radiation plate 1515, refrigerator in one end.
Main power amplifier board transistor group, interior cool accumulating block 2, interior cold radiation plate 15, semiconductor cooler, outer regenerative block 13, outer radiating
Heat conduction with phase change pad is used between the contact surface of plate 14.
Lid 9 is made using the stainless-steel sheet of the same race of thickness 0.5-1 millimeters on lower house 5 and lower house, after entire combination
It is weldingly fixed on floating on water device, vertical immersion enters water, and sealed faying face is higher than the water surface more than 200 millimeters.
Fig. 5 is the work shape that the group string data photovoltaic DC-to-AC converter that the utility model embodiment provides is vertically arranged in water
State figure；The housing of the group string data photovoltaic DC-to-AC converter of the present embodiment is submerged into buoyancy caused by water section and is more than own wt, turns into
The floating body part of floating on water device.
The group string data photovoltaic DC-to-AC converter that the present embodiment provides, power loss caused by no temperature rise, possesses good mistake
Loading capability, can export the active power more than rated capacity while Reactive Power Dispatch is responded, and be more than 1.3 with design super:
When 1, can long term overloading volume stable operation do not drop, degree of protection, anticorrosion, ageing-resistant ability exceed the flat of photovoltaic plant 25 years
The equal life-span.
The group string data photovoltaic DC-to-AC converter that the present embodiment provides,, unit volume big using rivers ocean lake and reservoir specific heat capacity
The capacity of heat transmission it is strong, be immersed in the direct heat conduction of heater element heat in water body into water, heat is led caused by photovoltaic DC-to-AC converter
Cause water temperature is elevated to influence negligible, accomplish not fetch water, be pollution-free, without discharge, noiseless, it is non-maintaining, it will not produce
Raw water environmental impact.
The group string data photovoltaic DC-to-AC converter that the present embodiment provides, international degree of protection certification IP67 can be reached, ensured in platform
Even if being sunk under the water under the unexpected state such as wind will not also intake in 1 meter, 30 minutes.
The group string data photovoltaic DC-to-AC converter that the present embodiment provides, aluminium electrolutic capacitor is internally used under the conditions of 65 DEG C of temperature
Life-span is more than 32000 hours, and the utility model in 30 DEG C or so of environment water temperature, test main power amplifier board temperature rise and be no more than by full power
35 DEG C, shell body temperature is no more than 30 DEG C.Calculated by water surface photovoltaic power station annual 1200 gas-to electricity hour, inverter component
Heat affecting service life is more than 26 years.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among the protection domain that variation is created still in the utility model.
Claims (10)
1. one kind group string data photovoltaic DC-to-AC converter, it is characterised in that including
Housing, there is inner chamber, refrigerator hot junction (11) opening being in communication with the outside is formed on the housing of the inner chamber side；
The outer surface of the housing is provided with waterproof terminal component；
Semiconductor cooler, in the inner chamber, have positioned at the refrigerator hot junction (11) of positive and negative and refrigerator cold end
(1), the refrigerator hot junction (11) is open towards the refrigerator hot junction (11) and sets and pass through the refrigerator hot junction (11)
Be exposed to the external world, refrigerator hot junction (11) place is provided with hot junction boss, by hot end seal circle (12) with corresponding housing
Face seal connects；
Main power transistor group (4), in the inner chamber and it is located at refrigerator cold end (1) side, the main power is brilliant
Body pipe group (4) is connected with the waterproof terminal component.
2. according to claim 1 group of string data photovoltaic DC-to-AC converter, it is characterised in that also include
Outer heat abstractor, the refrigerator hot junction (11) is sealingly fastened in, for expanding refrigerator hot junction (11) radiating surface
Product, the outer heat abstractor stretch out the hull outside by the refrigerator hot junction (11) opening.
3. according to claim 2 group of string data photovoltaic DC-to-AC converter, it is characterised in that the outer heat abstractor is included described in
Refrigerator hot junction (11) to refrigerator hot junction (11) opening direction on housing is successively set on the outer of the refrigerator hot junction (11)
Regenerative block (13) and outer heat sink (14), the area of the outer heat sink (14) are more than the area of the refrigerator hot junction (11).
4. according to claim 3 group of string data photovoltaic DC-to-AC converter, it is characterised in that the outer regenerative block (13) and the system
The area and refrigerator hot junction (11) area of the connected one end in cooler hot junction (11) are about the same, with the outer heat sink (14)
The area of connected one end is more than refrigerator hot junction (11) area, but less than the area of the outer heat sink (14).
5. according to claim 3 group of string data photovoltaic DC-to-AC converter, it is characterised in that the outer regenerative block (13), outer radiating
Plate (14) is made up with the housing of same kind of stainless steel.
6. the group string data photovoltaic DC-to-AC converter according to any one of claim 1-5, it is characterised in that also include
Interior cold-storage device, between the refrigerator cold end (1) and the main power transistor group (4), for the system
The caloric value of cooler cold end (1) is adjusted to prevent refrigerator cold end (1) place from condensing.
7. according to claim 6 group of string data photovoltaic DC-to-AC converter, it is characterised in that the interior cold-storage device is included described in
The interior cold radiation plate (15) and interior cool accumulating block (2) that refrigerator cold end (1) to main power transistor group (4) direction is set gradually,
The area of the interior cold radiation plate (15) is more than the area of the refrigerator cold end (1).
8. according to claim 6 group of string data photovoltaic DC-to-AC converter, it is characterised in that the interior cool accumulating block (2), interior cold radiation plate
(15) it is made up of the aluminium of solid copper or anodized.
9. the group string data photovoltaic DC-to-AC converter according to any one of claim 1-5, it is characterised in that under the housing includes
(9) are covered on housing (5) and lower house, the lower house (5) is provided with the inner chamber and the refrigerator hot junction (11) and is open, described
Case top lid is provided with the waterproof terminal component, covered on the lower house (9) by least two groups of elastic seal rings with it is described under
Housing (5) is sealed, and lid (9) is detachably connected with the lower house (5) on the lower house.
10. according to claim 9 group of string data photovoltaic DC-to-AC converter, it is characterised in that the waterproof terminal component includes light
Lie prostrate component direct current input waterproof terminal (10), output waterproof terminal (8) and OT waterproof terminals (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621157412.7U CN206890908U (en) | 2016-11-01 | 2016-11-01 | One kind group string data photovoltaic DC-to-AC converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621157412.7U CN206890908U (en) | 2016-11-01 | 2016-11-01 | One kind group string data photovoltaic DC-to-AC converter |
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| CN206890908U true CN206890908U (en) | 2018-01-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246745A (en) * | 2016-11-01 | 2017-10-13 | 饶尧 | One kind group string data photovoltaic DC-to-AC converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246745A (en) * | 2016-11-01 | 2017-10-13 | 饶尧 | One kind group string data photovoltaic DC-to-AC converter |
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