CN208298665U - Inverter and transformer all-in-one machine - Google Patents

Abstract

The utility model provides a kind of inverter and transformer all-in-one machine, including an at least inverter, at least a transformer and pallet, an at least inverter and an at least transformer integrative installation technology are on the pallet, the at least output end of an inverter is electrically connected with the input terminal of an at least transformer by conducting wire, the transformer includes iron core, winding and oil cooling system, the winding is made of aluminium alloy, and cooling medium used by the oil cooling system is vegetable oil.The utility model is integrated, at low cost, energy conservation and environmental protection, superior performance.

Description

Inverter and transformer all-in-one machine

Technical field

The utility model relates to a kind of controller switching equipment more particularly to a kind of inverters and transformer all-in-one machine.

Background technique

This part intends to provides background or context for the embodiments of the present invention stated in claims.This The description at place recognizes it is the prior art not because not being included in this section.

In some power fields, such as photovoltaic power generation, need using inverter and transformer.Traditional inverter and transformation Device is independent equipment, in actual use, needs to carry out civil construction respectively to install inverter and transformer, constructs numerous It is trivial, and the distance between inverter and transformer are larger, and electric wiring is long, is unfavorable for connecting.And existing transformer is adopted Cooling with mineral oil, mineral oil has the characteristics that burning point is lower, degradation time is slow, will limit the use scope of transformer.Separately Outside, current transformer winding generally uses aluminum steel or copper wire, and the anti-short circuit capability of aluminum steel is relatively low, and the loss of copper wire Greatly, noise is big and somewhat expensive.

Utility model content

In view of this, it is necessary to provide a kind of inverter and transformer all-in-one machine, it is integrated, at low cost, energy saving Environmental protection, superior performance.

A kind of inverter and transformer all-in-one machine provided by the utility model, including an at least inverter, at least one change Depressor and pallet, an at least inverter and an at least transformer integrative installation technology are on the pallet, institute It states at least output end of an inverter to be electrically connected with the input terminal of an at least transformer by conducting wire, the transformer includes Iron core, winding and oil cooling system, the winding are made of aluminium alloy, cooling medium used by the oil cooling system For vegetable oil.

Further, the aluminium alloy is aluminium zircaloy.

Further, the pallet is equipped with the first installing zone and the second installing zone, at least inverter installation In the first installing zone, an at least transformer is installed on the second installing zone, between first installing zone and the second installing zone Equipped with partition, offer opening on the partition, connect an at least inverter conducting wire pass through the opening with it is described extremely Few transformer electrical connection.

Further, the conducting wire is externally provided with shield.

Further, at least one cabinet is equipped on the pallet, each cabinet has an at least chamber door, institute An at least inverter is stated to be installed in a cabinet, and/or, an at least transformer is installed in a cabinet.

Further, the all-in-one machine further includes AC power distribution cabinet/AC distribution panel, the AC power distribution cabinet/AC distribution panel be set to be equipped with it is described at least In the cabinet of one inverter, the output end of an at least inverter becomes after being electrically connected the exchange accessory cabinet with described at least one The input terminal of depressor is electrically connected.

Further, the all-in-one machine further includes the accessory case on a transformer, is assembled in the accessory case Power grid is electrically connected to after having electric appliance component, the output end of an at least transformer to be electrically connected to the electric appliance component.

Further, the electric appliance component includes fuse, on-load switch, disconnecting switch, lightning protection device.

Further, the transformer is three-phase transformer, and the transformer further includes being pressed at the top of the winding Upper yoke cushion block, the lower yoke cushion block for being pressed in the winding bottom, compress the iron core upper yoke upper clamping piece and pressure The lower clamping piece of the lower yoke of the tight iron core, the upper clamping piece are set to above the upper yoke cushion block, and the lower clamping piece is set to institute The lower section for stating lower yoke cushion block, between the upper clamping piece and upper yoke cushion block, in the lower clamping piece and the lower yoke cushion block Between be respectively arranged with silicon steel sheet.

Further, the upper yoke of the iron core between the winding and the lower yoke of the iron core with it is described Iron yoke partition is provided between winding, at least one end of the iron yoke partition is equipped with notch, is equipped with cylinder in the notch.

All-in-one machine provided by the utility model, transformer and inverter is integrated, live peace can not only be reduced ETL estimated time of loading reduces construction cost, and the electric wire between transformer and inverter is short out, more particularly to shorten inverter output The conducting wire connection length at end and transformer inputs improves the connection reliability between transformer and inverter and reduces damage It consumes, the winding of transformer closes production using aluminium zirconium, and cooling medium uses vegetable oil, good, superior performance, section with anti-short circuit capability The relatively low advantage of energy environmental protection, cost.

Detailed description of the invention

In order to illustrate more clearly of the utility model embodiment technical solution, will make below to required in embodiment description Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.

Fig. 1 shows a direction stereoscopic schematic diagram of the all-in-one machine of the utility model.

Fig. 2 shows the other direction stereoscopic schematic diagrams of the all-in-one machine of the utility model.

Fig. 3 shows the main view of transformer.

Fig. 4 shows the structural schematic diagram of body.

Fig. 5 shows the III-III cross-sectional view of Fig. 4.

Fig. 6 shows the structural schematic diagram of the part of Fig. 5.

Fig. 7 shows the yield strength of aluminium zircaloy, copper and aluminium and the curve graph of temperature.

Fig. 8 shows the top view of body.

Fig. 9 shows the structural schematic diagram of iron yoke fagging.

Main element symbol description

The following detailed description will be further explained with reference to the above drawings the utility model.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.It refers to and says it is appreciated that attached drawing only provides Bright use is not used to limit the utility model.The connection shown in attached drawing is only to be convenient for clearly describing, and not Limit connection type.

It should be noted that it can be directly to separately when a component is considered as " connection " another component One component may be simultaneously present component placed in the middle.Unless otherwise defined, all technologies used herein and section are academic Language has the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs.Herein in the utility model Term used in the description, which is only for the purpose of describing specific embodiments, to be not intended to limit the utility model.

Fig. 1 shows the structural schematic diagram of the all-in-one machine 200 of the utility model.The all-in-one machine 200 becomes including at least one Depressor 100, at least an inverter 101, AC power distribution cabinet/AC distribution panel 102, accessory case 103, pallet 104 and radiator 105, it is described An at least transformer 100 and an at least inverter 101 are respectively mounted on the pallet 104, are formed integrated Equipment.

In the present embodiment, all-in-one machine 200 may include a transformer 100 and two inverters 101, the accessory case 103 are mountable on the transformer 100, mountable in the accessory case 104 to have an electric appliance component, and the electric appliance component can be with Including one or more of fuse, on-load switch, disconnecting switch, lightning protection device.

The output end of an at least inverter 101 can be connect with AC power distribution cabinet/AC distribution panel 102, the AC power distribution cabinet/AC distribution panel 102 Output end is connect with an at least transformer 100, the electric appliance group in at least output end of a transformer 100 and accessory case 103 It is input in power grid after part connection.The all-in-one machine 200 can be applied to photovoltaic power generation, it should be appreciated that the all-in-one machine is also It can be used for other possible power fields.When being applied to photovoltaic power generation, photovoltaic electrification component can be by DC supply input extremely Inverter 101 is input in transformer 100 after inverter 101 is converted into alternating current, is inputted after the boosting of transformer 100 It is input in power grid after electric appliance component in accessory case, or can be directly over after transformer 100 boosts and be input to power grid In.

The pallet 104 may include pedestal 1041, the support column 1042 being arranged on 1,041 4 angles of pedestal, Yi Jitong The top plate 1043 for crossing the support of four support columns 1042, constitutes installation space between the pedestal 1041 and the top plate 1043.Institute The first installing zone and the second installing zone can be divided by stating installation space, partition can be arranged between the first installing zone and the second installing zone 1044.First installing zone can be used for installing inverter, and the second installing zone can be used for installing transformer, with this by inverter and transformation Device is spaced apart.

Side plate 1045 can be set between support column 1042, and side plate 1045 and pedestal 1041, top plate 1043, partition 1044 can First installing zone A and/or the second installing zone B is constituted into cabinet, chamber door can be set on cabinet, be convenient to staff and enter case Inverter 101 or transformer 100 are checked in vivo, and when constituting two cabinets, inverter 101 is mountable in one cabinet, is become Depressor 100 is installed in another cabinet.In present embodiment, the first installing zone A is cabinet, and the second installing zone B is frame knot Structure without being so convenient to the heat dissipation of transformer 100 and can guarantee the safety of inverter 101 at work for cabinet, The AC power distribution cabinet/AC distribution panel 102 may be disposed in the cabinet for being equipped with inverter 101.

For convenience in the heat dissipation of inverter 101, shutter 1046 can be opened up on partition 1044 or side plate 1045.? It is also provided with opening 1047 on the partition 1044, the conducting wire for connecting the inverter 101 may pass through the opening 1047 and institute The electrical connection of an at least transformer 100 is stated, shield can be externally provided in conducting wire.It, can be in transformation for convenience in the heat dissipation of transformer 100 The radiator 105 is installed on device 100.

It should be understood that the transformer 100 can be oil-immersed transformer, it is also possible to dry-type transformer or gas Body insulating transformer, the transformer 100 can also be single-phase transformer either three-phase transformer.In present embodiment, with It is illustrated for the three-phase transformer of oil immersed type, it should be appreciated that the specific structure of the transformer of the utility model may be used also To correspondingly apply in other kinds of transformer.

Please refer to Fig. 3 and Fig. 4, the transformer 100 may include fuel tank 110 and the body that is arranged in fuel tank 110 120.Can outside fuel tank 110 settable oil level indicator 31, oil exit pipe 32, low-tension bushing 33 and bushing 34, the oil level indicator 31 can be used for checking the oil mass in fuel tank 110, and the oil exit pipe 32 can be used for the cooling oil discharge in fuel tank 110.

The body 120 includes iron core 10 and winding 20.The iron core 10 can be made of silicon steel sheet, no-load loss Small, no-load loss is horizontal can even to reach 14 types, and no-load current and unloaded noise are much better than standard requirements.The iron core 10 can Including three cylinders 11, one end for being connected to three cylinders 11 upper yoke 12 and be connected to the other ends of three cylinders 11 Lower yoke 13.A winding 20 is set outside each cylinder 11.Each winding 20 can wrap low pressure winding 21 and high pressure Winding 22, wherein the low pressure winding 21 and the high-voltage winding 22 can be used aluminium alloy and be made.The low pressure winding 21 is arranged In outside the cylinder 11, the high-voltage winding 22 is set to outside the low pressure winding 21.The low-tension bushing 33 connects described low Winding 21 is pressed, the bushing 34 connects the high-voltage winding 22.

One layer of coaming plate 30 can also be set between the low pressure winding 21 and the cylinder 11, and coaming plate 30 is by low pressure winding 21 and cylinder 11 be spaced apart.Between the low pressure winding 21 and the cylinder 11, and/or, in the low pressure winding 21 and institute It states and is provided with oil duct 40 between high-voltage winding 22, the oil duct 40 can be connected to fuel tank 110.

Referring to Fig. 5, in the present embodiment, described between low pressure winding 21 and the cylinder 11 and described Oil duct 40 is provided between low pressure winding 21 and the high-voltage winding 22, the oil being set between low pressure winding 21 and cylinder 11 Road can be half oil duct 41 of low pressure, and the oil duct 40 being set between low pressure winding 21 and high-voltage winding 22 may include main empty path 42 With half oil duct 43 of high pressure.

In the present embodiment, half oil duct 41 of low pressure can be set between low pressure winding 21 and coaming plate 30, described Half oil duct 41 of low pressure is close to the inside of the low pressure winding 21.

In the present embodiment, the main empty path 42 is close to the outside of the low pressure winding 21, half oil duct 43 of high pressure Close to the inside of the high-voltage winding 22.

Referring to Fig. 6, between the cylinder 11 and the low pressure winding 21, can also be arranged several fagging 31 and/ Or several stays 32 can cross the filling cylinder 11 and the low pressure winding by the fagging 31 and/or the stay 32 Gap between 21 allows winding 20 to be fastened on outside cylinder 11, improves the bond strength of winding 20 and cylinder 11.

In the present embodiment, the fagging 31 and/or the stay 32 can be set in the cylinder 11 and described enclose Between plate 30.

It is filled with vegetable oil in the fuel tank 110 and oil duct 40, is situated between using vegetable oil as the cooling of cooling system Matter.The vegetable oil can be edible vegetable oil, or food-grade performance-enhancing additive can be added in edible vegetable oil It configures.Vegetable oil can be one or more of soya-bean oil, rapeseed oil etc., it should be appreciated that the vegetable oil is also It may include other types.

It please refers to shown in table 1 and table 2, table 1 is the physicochemical property of vegetable oil and high-flash mineral oil and silicone fluid Comparison sheet, table 2 are the electrical property comparison sheet of vegetable oil and high-flash mineral oil and silicone fluid.

The physicochemical property comparison sheet of 1 vegetable oil of table and high-flash mineral oil and silicone fluid

	Vegetable oil	High-flash mineral oil	Silicone fluid
				25 DEG C of dielectric constant	3.1	2.2	2.71
Resistivity (Ω m)	1012	1012 1013	1012
				Pulse breakdown voltage	116	145	136
Dielectric loss % (25 DEG C)	0.25	0.05 (maximum)	-0.01
				Dielectric loss % (100 DEG C)	1.00	0.3	-0.01

The electrical property comparison sheet of 2 vegetable oil of table and high-flash mineral oil and silicone fluid

As shown in Table 1, vegetable oil is planted in terms of the parameters such as viscosity, flash-point, ignition point, specific heat, pyroconductivity, the coefficient of expansion Object oil will be better than mineral oil, and is also significantly better than silicone oil in certain aspect of performance.As shown in Table 2, the dielectric of vegetable oil is normal Number is higher than mineral oil and silicone fluid.

Using the transformer 100 of vegetable oil, 350 DEG C of 300 DEG C of the flash-point > of vegetable oil, burning point > belong to K grades of fire resistant oils, It is twice of mineral oil, the risk of fire and explosion occurs, well below conventional mineral oil transformer, therefore it is safer；It plants The degradation rate of object oil in a short time is more than 98%, is free of any harmful substance, the carbon emission amount of life cycle management is only mineral The 1/64 of oil will not generate pollution to environment, will not be detrimental to health, therefore more clean；Vegetable oil has excellent resistance to Tide, dielectric constant is high, delays insulation ag(e)ing, extends insulation life, compatibility is good, and capability of overload is strong, can reduce change Depressor noise, effectively improves the oxidation resistance of transformer 100, and arc extinction performance is better than mineral oil, thus performance it is more excellent and And cost is lower.

It sees shown in table 3, table 3 is the kinematic viscosity contrast table of several cooling oils.

The kinematic viscosity contrast table of several cooling oils of table 3

By table 3 it is found that vegetable oil comparing than mineral oil, kinematic viscosity is bigger, therefore, transformer thermal diffusivity will lead to It can reduce；In present embodiment, high-voltage winding 22 can be used aluminium zircaloy line coiling and form, and the conjunction of aluminium zirconium can be used in low pressure winding 21 Goldleaf coiling forms, and aluminium zircaloy foil is applied in the transformer of vegetable oil heat dissipation, with line compared with, can preferably improve change The oil stream of depressor improves the heat dissipation performance of low pressure winding 21, moreover, because using foil around low pressure winding 21, width is to short-circuit force It is small, the anti-short circuit capability of low pressure winding 21 can be further improved.

In present embodiment, the aluminium zircaloy foil and/or the zircaloy line are in percentage by weight, including following Component: zirconium 1.6%, lanthanum 0.1-0.3%, cerium 0.1-0.3%, iron 0.1%, silicon 0.05%, it is remaining be aluminium and micro impurity, Zirconium, iron and silicon are added in fine aluminium, can significantly improve the mechanical strength and heat resistance of aluminium, and adding lanthanum and cerium can be into One step strengthens mechanical strength and heat resistance, and can be improved conductivity.

Please refer to shown in Fig. 7, during temperature gradually rises, the yield strength of aluminium zircaloy be higher than annealing fine aluminium, Cold drawing fine aluminium, in addition it is higher in certain temperature range internal ratio annealed copper, it is seen that and the yield strength of aluminium zircaloy compares common fine aluminium It is more excellent, in certain temperature range, it is better than copper wire.

Moreover, using winding made of aluminium zircaloy, compared with the winding made of the common aluminum steel, have more preferably conductive Property, heat resistance, anti-short circuit capability compared with the winding made of the common copper wire, have many advantages, such as that noise is small, more economical.

In present embodiment, in order to improve the heat dissipation performance of transformer 100,40 internal diameter of oil duct can also be designed as comparing The internal diameter of the oil duct of the existing standard transformer using mineral oil increases about 20%, it should be appreciated that the increasing is about For 20% can be increase 20% or can 20% certain deviation range (such as 20% ± 2%).The internal diameter of oil duct 40 Increasing, can be improved the mobility of vegetable oil, increase the heat dissipation area of winding 20, to improve the thermal diffusivity of transformer 100 It can, reduce the heating of transformer 100.If 40 internal diameter of oil duct is than the internal diameter of the oil duct of the existing standard transformer using mineral oil Excessive (such as 30% or more) is increased, then will affect the impedance of transformer 100, is unfavorable for promoting the performance of transformer 100, this reality It applies in mode, most preferably increases than the internal diameter of the oil duct of the existing standard transformer for using mineral oil as 20%.

Please continue to refer to Fig. 4 and Fig. 8, the body 120 can also include upper yoke cushion block 50, lower yoke cushion block 51, Upper clamping piece 52, lower clamping piece 53 and silicon steel sheet 54, the upper clamping piece 52 are set to the top of the upper yoke cushion block 50 and by silicon steel Piece 54 and upper yoke cushion block 50 are pressed on the top of the winding 20, and the lower clamping piece 52 is set to the lower yoke cushion block 51 Lower section and the lower section that silicon steel sheet 54 and lower yoke cushion block 51 are pressed on to the winding 20.In present embodiment, the silicon steel The thickness of piece 54 substantially 5mm, it should be appreciated that described substantially can be within certain deviation range, it should be understood that , the silicon steel sheet 54 can also select corresponding thickness according to actual needs.

Silicon steel sheet 54 is set between folder 52,53 and iron yoke cushion block 50,51, the public magnetic shunt path of three-phase can be constituted, Traditional magnetic circuit direction is changed, no-load loss and load loss can be substantially reduced, is conducive to the property for improving transformer 100 Energy.

When iron yoke cushion block 50,51 is pressed on winding 20, the side of the upper yoke cushion block 50 can with it is described on The side of iron yoke 12 is bonded, and the side of the lower yoke cushion block 51 can be bonded with the side of the lower yoke 13.

In present embodiment, the upper clamping piece 52 may include the first upper clamping piece 521 and the second upper clamping piece 522, under described Folder 53 may include the first lower clamping piece 531 and the second lower clamping piece 532, between each upper clamping piece and corresponding iron yoke One silicon steel sheet 54 is set.First upper clamping piece 521 and second upper clamping piece 522 are set to the two sides of upper yoke 12, and the two can To be bolted and clamp the silicon steel sheet 54 and the upper yoke 12.First lower clamping piece 531 and described second Lower clamping piece 532 is set to the two sides of the lower yoke 13, and the two can be bolted to clamp the silicon steel sheet 54 and institute State lower yoke 13.

The body 120 can also include upper yoke partition 60, upper yoke fagging 61, lower yoke partition 62 and lower yoke Fagging 63, the upper yoke partition 60 and the upper yoke fagging 61 be pressed in the winding 20 and the upper yoke 12 it Between, the lower yoke partition 62 and the lower yoke fagging 63 are pressed between the winding 20 and lower yoke 12.On described Iron yoke fagging 61 is set to the top of the upper yoke partition 60, and the lower yoke fagging 63 is set to the lower yoke partition 62 lower section.

Also referring to Fig. 9, at least one end of the iron yoke partition 60,61 is equipped with notch 64, described in present embodiment The both ends of iron yoke partition 60,61 are opposite to be equipped with notch 64, and the notch 64 is substantially in " I " fonts.The notch 64 can be with phase The edge shape for the cylinder 11 answered matches, and the corresponding cylinder 11 is at least partly set in the notch 64.Example Such as, the cross-sectional shape of the cylinder 11 can be track type, and the notch 64 can be runway-shaped arc notch, when the cylinder 11 be set to the notch 64 in when, the notch 64 can be bonded with the side of cylinder 11.The iron yoke partition of present embodiment 60,61, fitting area is bigger, and inducting-voltage proof is good, and bearing area is bigger, and intensity is high, can preferably completely cut off iron yoke 12,13 With winding 20, there is excellent anti-short circuit capability.

The advantages of transformer with the exemplary embodiment of a transformer to illustrate the utility model, the illustrative change The design parameter of depressor is as follows.

The illustrative transformer, core material: B20R070；Core section: 197.315cm²；Iron core weight: 490kg； Low pressure winding material: aluminium zircaloy foil；High-voltage winding material: aluminium zircaloy line；Low pressure winding the number of turns: 31 circles；High-voltage winding circle Number: 1409 circles；Primary cable sectional area: 196.1mm²；High-voltage conducting wires sectional area: 10.7mm²；Low pressure winding weight: 60kg；It is high Press winding weight: 147kg；Cooling medium: vegetable oil.

The illustrative transformer, no-load loss: < 0.41kW, load loss: < 4.52kW heat-stable calibration maximum temperature 165 DEG C, dynamic stability checks winding maximum stress 78Mpa, and respectively less than aluminium alloy is heat-resisting and intensity allowable value, and has enough safety Nargin.

It sees shown in table 4, table 4 is transformer, the mineral oil transformer, dry-type transformer comparative situation of present embodiment It is as follows.

The contrast table of several transformers of table 4

It follows that the transformer of the utility model, for traditional transformer, performance is more superior.

The all-in-one machine 200 of present embodiment, transformer 100 and inverter 101 is integrated, it can unify in factory Installation and debugging, transport and easy to maintain, integral hoisting at the scene can not only reduce field installation time, reduce construction Cost, efficiency greatly promote, and the electric wire between transformer 100 and inverter 101 is short out, but also are convenient to connect inverse The connection for becoming the bus of device 101, connect length more particularly to shorten 101 output end of inverter with the conducting wire of 100 input terminal of transformer Degree improves the connection reliability between transformer 100 and inverter 101 and reduces loss, can concentrate heat dissipation, reduce inversion The cooling fan quantity that device 101 and transformer 100 are arranged as individual equipment improves utilization rate of equipment and installations.Moreover, transformation The winding of device 100 closes production using aluminium zirconium, and cooling medium uses vegetable oil, good, superior performance, energy-saving ring with anti-short circuit capability It protects, the advantage that cost is relatively low.

In specification and claims of this application requirements, word "comprises/comprising" and word " have/including " and its deformation, For the presence of specified stated feature, numerical value, step or component, but one or more of the other spy is not precluded the presence or addition of Sign, numerical value, step, component or their combination.

Some features of the utility model, it is clear to illustrate, it describes in various embodiments respectively, so, these features Also it can be combined in single embodiment and describe.On the contrary, some features of the utility model, for simplicity, only in single implementation It is described in example, so, these features can also be separated individually or are described in different embodiments in any suitable combination.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of inverter and transformer all-in-one machine, which is characterized in that including an at least inverter, an at least transformer, with And pallet, an at least inverter and an at least transformer integrative installation technology on the pallet, it is described at least The output end of one inverter is electrically connected with the input terminal of an at least transformer by conducting wire, the transformer include iron core, Winding and oil cooling system, the winding are made of aluminium alloy, and cooling medium used by the oil cooling system is to plant Object oil.

2. all-in-one machine according to claim 1, which is characterized in that the aluminium alloy is aluminium zircaloy.

3. all-in-one machine according to claim 1, which is characterized in that the pallet is equipped with the first installing zone and the second installation Area, an at least inverter are installed on the first installing zone, and an at least transformer is installed on the second installing zone, and described first It is equipped with partition between installing zone and the second installing zone, opening is offered on the partition, connects leading for an at least inverter Line passes through the opening and is electrically connected with an at least transformer.

4. all-in-one machine according to claim 3, which is characterized in that the conducting wire is externally provided with shield.

5. all-in-one machine according to claim 1-3, which is characterized in that be equipped at least one on the pallet Cabinet, each cabinet have an at least chamber door, and an at least inverter is installed in a cabinet, and/or, it is described An at least transformer is installed in a cabinet.

6. all-in-one machine according to claim 5, which is characterized in that the all-in-one machine further includes AC power distribution cabinet/AC distribution panel, the friendship Stream power distribution cabinet, which is set to, to be equipped in at least cabinet of an inverter, described in the output end electrical connection of an at least inverter It is electrically connected after exchange accessory cabinet with the input terminal of an at least transformer.

7. all-in-one machine according to claim 1-3, which is characterized in that the all-in-one machine further includes being set to described in one Accessory case on transformer is equipped with electric appliance component in the accessory case, and the output end of an at least transformer is electrically connected to Power grid is electrically connected to after the electric appliance component.

8. all-in-one machine according to claim 7, which is characterized in that the electric appliance component include fuse, on-load switch, every Leave pass, lightning protection device.

9. all-in-one machine according to claim 1-3, which is characterized in that the transformer is three-phase transformer, institute State transformer further include be pressed in upper yoke cushion block at the top of the winding, the lower yoke cushion block that is pressed in the winding bottom, It compresses the upper clamping piece of the upper yoke of the iron core and compresses the lower clamping piece of the lower yoke of the iron core, the upper clamping piece is set to Above the upper yoke cushion block, the lower clamping piece is set to the lower section of the lower yoke cushion block, in the upper clamping piece and upper yoke pad Silicon steel sheet is respectively arranged between block, between the lower clamping piece and the lower yoke cushion block.

10. all-in-one machine according to claim 1-3, which is characterized in that the upper yoke of the iron core with it is described Iron yoke partition is provided between winding and between the lower yoke of the iron core and the winding, the iron yoke partition is extremely Few one end is equipped with notch, is equipped with cylinder in the notch.