CN103872924B - Variable frequency controller and anti-explosion variable frequency motor with same - Google Patents
Variable frequency controller and anti-explosion variable frequency motor with same Download PDFInfo
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- CN103872924B CN103872924B CN201410060332.9A CN201410060332A CN103872924B CN 103872924 B CN103872924 B CN 103872924B CN 201410060332 A CN201410060332 A CN 201410060332A CN 103872924 B CN103872924 B CN 103872924B
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Abstract
The invention discloses a variable frequency controller and an anti-explosion variable frequency motor with the same. The variable frequency controller comprises a direct current laminating layer bus bar, multiple single phase variable frequency modules connected with the direct current laminating layer bus bar, an inner water cooling unit for cooling the single phase variable frequency modules, and multiple direct current filter capacitor groups. According to the variable frequency controller for the anti-explosion variable frequency motor, the single phase variable frequency modules and the direct current filter capacitor groups are arranged in a laminating mode, so the structural compactness of the variable frequency control device in the length, width and height space is improved, the size of the variable frequency controller is reduced, the structure of the variable frequency controller is enabled to be more compact and reasonable, the electrical distance between a high-voltage element and a shell is favorably increased, an electrical insulation protection device is favorably additionally arranged around the high-voltage element, and the high-voltage insulation performance of the variable frequency controller is improved.
Description
Technical field
The present invention relates to flame-proof converter technical field, specifically, particularly to a kind of frequency-converting control device and have it
Explosion-proof variable frequency motor.
Background technology
Converter is, using the effect that turns on and off of semiconductor power device, industrial-frequency alternating current is transformed to frequency-adjustable
Alternating current converting means.This device is first transformed to unidirectional current industrial-frequency alternating current, then is frequency-adjustable DC power conversion
Alternating current carry out driving load.Consider the working environment at coal mines such as colliery there is narrow space, humidity, in the air contain inflammable and explosive
The feature of composition, universal converter is forbidden in down-hole application.Explosion-proof frequency converter is exactly directed to this special environment electricity
Machine equipment carries out the product of frequency modulation.
Converter and motor for underground coal mine are all detached, and that is, an explosion-proof frequency converter passes through up to a hundred meters of cables even
Connect one or two motors.This kind of connected mode has the disadvantage that：Overall space takies big, wiring inconvenience, converter and electricity
Machine connection cable is run to the electromagnetic interference peripheral equipment in space, converter is longer to motor cable, can cause harmonic wave
Reflection and superposition, improve crest voltage, and easily damage electrical machine insulation, converter and motor are in down-hole weak heat-dissipating etc..
Additionally, because being limited by volume, the electric pressure of explosion-proof frequency converter can only be accomplished in 1140V it is impossible to meet coal
The demand to high-voltage high-power frequency transformator for the charcoal enterprise.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention
One purpose is to propose the frequency-converting control device for explosion-proof variable frequency motor of a kind of compact conformation, good heat dissipation effect.This
Another bright purpose is to propose a kind of explosion-proof variable frequency motor with above-mentioned frequency-converting control device.
Provide a kind of frequency-converting control device for explosion-proof variable frequency motor according to an aspect of the present invention, including：Directly
Stream stack bus bar；Multiple single-phase frequency-variable modules, the plurality of single-phase frequency-variable module is all connected with described direct current stack bus bar；For
The interior water cooling unit that described single-phase frequency-variable module is cooled down, thus, it is possible to improve the radiating efficiency of single-phase frequency-variable module.Directly
Four groups of electric capacity that stream filter capacitor group can be placed for stacking, thus, it is possible to reduce the volume of frequency-converting control device further, make
The structure of frequency-converting control device is compacter, reasonable.Multiple DC filter capacitor groups, described DC filter capacitor group is straight with described
Stream stack bus bar connects.
The frequency-converting control device for explosion-proof variable frequency motor according to embodiments of the present invention, by by single-phase frequency-variable module and
The stacking of DC filter capacitor group is placed, and improves compact conformation in length, width and height space for the frequency-converting control device
Degree, not only can reduce the volume of frequency-converting control device, make the structure of frequency-converting control device compacter, reasonable, and also has
Beneficial to the electric equipment compartment increasing between high voltage device and housing away from being also beneficial to set up electric insulation protection dress around high voltage device
Put, improve the High-Voltage Insulation performance of frequency-converting control device.Additionally, water cooling unit in setting in frequency-converting control device, improve
The radiating efficiency of frequency-converting control device.
In addition, the frequency-converting control device for explosion-proof variable frequency motor according to the above embodiment of the present invention can also have as
Lower additional technical characteristic：
According to one embodiment of present invention, described interior water cooling unit includes：Water pump；At least one cooling water channel, described
At least one cooling water channel is located in described single-phase frequency-variable module, and each described cooling water channel has water inlet and outlet；Enter
Water separator, described enter water separator connect with the water inlet of described water pump and at least one cooling water channel described respectively；Water outlet
Separator, described go out water separator connect with the outlet of described water pump and at least one cooling water channel described respectively.Thus, may be used
Frequency-converting control device is radiated.
Further, described interior water cooling unit also includes water water- to-water heat exchanger, and described water water- to-water heat exchanger is connected to described water outlet
Between separator and described water pump.Thus, improve the heat exchange efficiency of interior water cooling unit, simplify the knot of frequency-converting control device
Structure.
According to one embodiment of present invention, the plurality of single-phase frequency-variable module stacking is placed and is connected to described direct current and folds
Layer busbar side, the plurality of DC filter capacitor group stacking is placed and is connected to the opposite side of described direct current stack bus bar.By
This, can make full use of the height space of frequency-converting control device, is conducive to high-low pressure element subregion to arrange, it is to avoid high voltage device pair
Low voltage component produces electromagnetic interference.
According to one embodiment of present invention, it is provided with multiple supporting parts between adjacent two described single-phase frequency-variable modules.
Thus, multiple single-phase frequency-variable modules can be made to be securely attached together, thus improve the structural stability of frequency-converting control device.
According to one embodiment of present invention, described single-phase frequency-variable module includes three.
Specifically, each described single-phase frequency-variable module includes：Many stack bus bars, described many stack bus bars are included from top to bottom
The both positive and negative polarity layer that stacks gradually, interconnection layer, zero layer and exchange articulamentum, wherein said both positive and negative polarity layer, interconnection layer, zero layer and
It is respectively equipped with interlayer insulating film, the upper surface of described both positive and negative polarity layer is equipped with the between every adjacent two layers between exchange articulamentum
One insulating coating, the lower surface of described exchange articulamentum is equipped with the second insulating coating；Metal support, described metal props up
Support part is disposed on the lower section of described many stack bus bars, has described cooling water channel in wherein said metal support；And
Insulation adnexa, described insulation adnexa is located at the side of described metal support and is supported with described many stack bus bars and described metal
Portion connects.
It should be noted that setting up insulation adnexa between many stack bus bars and metal support, by controlling insulation attached
The length of part is increasing the creep age distance between many stack bus bars and metal support, and then so that many stack bus bars is supported with metal
Spacing between portion is reduced to the thickness of insulation adnexa, so that single-phase frequency-variable module need not be subject to electric effect of distance, thus, carries
The high compact conformation degree of single-phase frequency-variable module, reduces the volume of frequency-converting control device.In addition, the number of plies by many stack bus bars
Increase to four layers, single-phase frequency-variable module can be made to be applied to high-power frequency conversion control device.
According to some examples of the present invention, there is in described metal support cooling water channel described at least one.Preferably,
The water inlet of every described cooling water channel and outlet are respectively positioned on the same side of described metal support.Thus, it is easy to cooling water
The arrangement in road, reduces the design difficulty of interior water cooling unit.More specifically, every described cooling water channel is all formed as U-shaped water channel.
It is connected with insulation adnexa and other electric elements for convenience of many stack bus bars, according to an enforcement of the present invention
Example, one end of the neighbouring described insulation adnexa of described exchange articulamentum has multiple first connection terminals spaced apart, described
First connection terminal is connected with described insulation adnexa.
According to a specific embodiment of the present invention, described first connection terminal includes：Flat part, described flat part is from institute
State exchange articulamentum to extend and with described to exchange articulamentum in the same plane；And it is connected vertically with described flat part
Bending part, described bending part is connected with described insulation adnexa.Alternatively, described bending part and described insulation adnexa are connected by bolt
Connect.
It is connected with direct current stack bus bar and other electric elements for convenience of many stack bus bars, according to a tool of the present invention
Body embodiment, one end of the neighbouring described direct current stack bus bar of described zero layer is configured with the second connection terminal, described both positive and negative polarity layer
One end of neighbouring described direct current stack bus bar be configured with two the 3rd connection terminals spaced apart, described second connection terminal
It is connected with described direct current stack bus bar respectively with described 3rd connection terminal.
Further, described many stack bus bars also include：Insulation strip, wherein said both positive and negative polarity layer, interconnection layer and friendship
Each layer in stream articulamentum is equipped with described insulation strip, thus, increased many stack bus bars and electric elements link position
Electric equipment compartment is away from increasing creep age distance, improve many stack bus bars integral insulation performance；And conductive pole, wherein said positive and negative
All rivetings on each layer in pole layer, interconnection layer, zero layer and exchange articulamentum have multiple described conductive poles, the institute on wherein every layer
State multiple conductive poles and pass through insulating washer electrical isolation with other layers.Many stack bus bars and corresponding electricity are cut off by insulating washer
Annexation between device element, thus reducing the loop area of many stack bus bars internal current formation, reduces many laminations
Busbar stray inductance.
According to some specific embodiments of the present invention, the described both positive and negative polarity layer of described many stack bus bars, interconnection layer, zero layer with
And exchange articulamentum by thickness, the copper plate for 1.5mm-2.5mm folds and forms.In order to improve the oxidation resistance of copper plate,
The described both positive and negative polarity layer of described many stack bus bars, the surface of interconnection layer, zero layer and exchange articulamentum all carry out tin plating process, plating
Thickness degree is more than 5 μm, and the upper surface roughness requirements of described metal support are less than 1.6um-3.2um, and planarity requirements are less than
0.1mm/m.Thus, can make there is good contact effect between electric elements and metal support, be conducive to interior water cooling unit pair
Electric elements on metal support are radiated.
In order to prevent entering in many stack bus bars and lead to the decreasing insulating of many stack bus bars because of dust, moisture,
According to a specific embodiment of the present invention, described first insulating coating and described second insulating coating neighboring are along employing
Pressing edge sealing process is processed, so that forming total enclosing structure between the first insulating coating and the second insulating coating.Thus, carry
High insulating properties under the rugged environments such as humidity, dust storm for many stack bus bars.
Provide a kind of explosion-proof variable frequency motor according to another aspect of the present invention, including above-mentioned frequency-converting control device.
Explosion-proof variable frequency motor according to embodiments of the present invention, by being laminated single-phase frequency-variable module and DC filter capacitor group
Place, improve compact conformation degree in length, width and height space for the frequency-converting control device, not only can reduce frequency conversion
The volume of control device, makes the structure of frequency-converting control device compacter, reasonable, and also helps increase high voltage device and shell
Electric equipment compartment between body away from, be also beneficial to set up electric insulation protection device around high voltage device, improve VFC dress
The High-Voltage Insulation performance put.Additionally, water cooling unit in setting in frequency-converting control device, improve the radiating of frequency-converting control device
Efficiency.
It should be noted that, by electric machine assembly, frequency-converting control device and filtering termination are located at and are interconnected
The first to the 3rd within the chamber, make the structure of explosion-proof variable frequency motor compacter, reasonable.Meanwhile, electric machine assembly, frequency conversion are reduced
Wiring difficulty between control device and filtering termination, the electromagnetism decreasing the other equipment to hull outside for the cable is done
Disturb, improve the stability of explosion-proof variable frequency motor.
Brief description
Fig. 1 is the front view of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention；
Fig. 2 is the top view of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention；
Fig. 3 is the single-phase frequency conversion of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention
The front view of module；
Fig. 4 is the single-phase frequency conversion of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention
The upward view of module；
Fig. 5 is the single-phase frequency conversion of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention
The axonometric chart of module；
Fig. 6 is that the metal of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention supports
The sectional view in portion；
Fig. 7 is that many laminations of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention are female
The perspective exploded view of row；
Fig. 8 is the water water heat exchange of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention
The axonometric chart of device；
Fig. 9 is the interior water-cooled list of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention
The schematic diagram of unit；
Figure 10 is the axonometric chart of the housing of explosion-proof variable frequency motor according to another embodiment of the invention；
Figure 11 is the axonometric chart of the partial shell of explosion-proof variable frequency motor according to another embodiment of the invention；
Figure 12 is the axonometric chart of the partial shell of explosion-proof variable frequency motor according to another embodiment of the invention；
Figure 13 is the axonometric chart of the partial shell of explosion-proof variable frequency motor according to another embodiment of the invention.
Reference：
Housing 100,
First chamber 110, gap 111, cylindrical stator set 112,
Second chamber 120, the 3rd chamber 130,
Frequency-converting control device 200,
Direct current stack bus bar 210,
Single-phase frequency-variable module 220,
Many stack bus bars 221, both positive and negative polarity layer 2211, the 3rd connection terminal 22111, interconnection layer 2212, zero layer 2213, second
Connection terminal 22131, exchanges articulamentum 2214, the first connection terminal 22141, flat part 22142, bending part 22143, interlayer is exhausted
Edge layer 2215, the first insulating coating 2216, the second insulating coating 2217, insulation strip 2218, conductive pole 2219, insulating washer
2220,
Metal support 222, insulate adnexa 223, anti-tracking collets 224,
Interior water cooling unit 230,
Water pump 231, cooling water channel 232, water inlet 2321, outlet 2322,
Enter water separator 233, go out water separator 234, water water- to-water heat exchanger 235,
DC filter capacitor group 240,
Supporting part 250.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention it is to be understood that term " longitudinal ", " horizontal ", " length ", " width ", " thickness ",
" on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", the orientation of instruction such as " outward " or
Position relationship is based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplifies description, and not
It is instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In describing the invention, " multiple " are meant that two or more,
Unless otherwise expressly limited specifically.
As shown in Fig. 1-Fig. 9, the frequency-converting control device 200 for explosion-proof variable frequency motor according to embodiments of the present invention, bag
Include：Direct current stack bus bar 210, multiple single-phase frequency-variable module 220, interior water cooling unit 230 and multiple DC filter capacitor group
240.
Specifically, multiple stacking place single-phase frequency-variable modules 220, DC filter capacitor group 240 all with direct current lamination
Busbar 210 connects.Interior water cooling unit 230 is used for single-phase frequency-variable module 220 is cooled down, thus, it is possible to improve single-phase frequency conversion
The radiating efficiency of module 220.Four groups of electric capacity that DC filter capacitor group 240 can be placed for stacking, thus, it is possible to subtract further
The volume of little frequency-converting control device 200, makes the structure of frequency-converting control device 200 compacter, reasonable.
The single-phase frequency-variable module 220 that multiple stackings are placed, DC filter capacitor group 240 are all connected with direct current stack bus bar 210
Connect.Interior water cooling unit 230 is used for single-phase frequency-variable module 220 is cooled down, thus, it is possible to improve single-phase frequency-variable module 220
Radiating efficiency.Four groups of electric capacity that DC filter capacitor group 240 can be placed for stacking, thus, improve frequency-converting control device 200
Compact conformation degree in length, width and height space, not only can reduce the volume of frequency-converting control device 200, make change
The structure of audio-frequency control device 200 is compacter, reasonable, and also helps electric between increase high voltage device and housing 100
Spacing, is also beneficial to set up electric insulation protection device around high voltage device, the high pressure that improve frequency-converting control device 200 is exhausted
Edge performance.
The frequency-converting control device 200 for explosion-proof variable frequency motor according to embodiments of the present invention, by by single-phase frequency conversion mould
Block 220 and DC filter capacitor group 240 stacking are placed, and improve frequency-converting control device 200 in length, width and height space
On compact conformation degree, not only can reduce the volume of frequency-converting control device 200, make the structure of frequency-converting control device 200 more
Compact, reasonable, and also help the electric equipment compartment increasing between high voltage device and housing 100 away from being also beneficial in high voltage device
Surrounding sets up electric insulation protection device, improves the High-Voltage Insulation performance of frequency-converting control device 200.Additionally, in VFC
Water cooling unit 230 in setting in device 200, improves the radiating efficiency of frequency-converting control device 200.
As shown in figure 9, according to one embodiment of present invention, interior water cooling unit 230 includes：Water pump 231, cooling water channel
232nd, enter water separator 233 and go out water separator 234.Specifically, it is provided with least one cooling water in single-phase frequency-variable module 220
Road 232, each cooling water channel 232 has water inlet 2321 and outlet 2322.Enter water separator 233 respectively with water pump 231 and
The water inlet 2321 of at least one cooling water channel 232 connects.Go out water separator 234 respectively with water pump 231 and at least one cooling
The outlet 2322 of water channel 232 connects.
In the presence of water pump 231, deionized water enters cooling water channel 232 by entering water separator 233, and in cooling water
Carry out heat exchange in road 232, finally returned in water pump 231 by going out water separator 234, and then it is right to achieve interior water cooling unit 230
The cooling of single-phase frequency-variable module 220.Thus, improve single-phase frequency-variable module 220 radiating efficiency.
As illustrated in figs. 8-9, further, interior water cooling unit 230 also includes water water- to-water heat exchanger 235, water water- to-water heat exchanger
235 are connected to out between water separator 234 and water pump 231, and its China and foreign countries' water cooling unit 300 passes through water water- to-water heat exchanger 235 and Nei Shui
Cold unit 230 connects to realize heat exchange.Specifically, water water- to-water heat exchanger 235 internal welding is connected to heat exchanger fin, interior water cooling unit 230 with
Outer water cooling unit 300 carries out heat exchange by heat exchanger fin.
In interior water cooling unit 230 the higher deionized water of temperature become after water water- to-water heat exchanger 235 low temperature go from
Sub- water, the relatively low deionized water of temperature again through water pump 231, enter water separator 233 and enter in cooling water channel 232, and to list
Phase transformation frequency module 220 is lowered the temperature.Thus, improve the heat exchange efficiency of interior water cooling unit 230, simplify frequency-converting control device
200 structure.It is understood that interior water cooling unit 230 is not limited to this with the heat exchange mode of outer water cooling unit 300, for example,
Water water- to-water heat exchanger 235 can also be substituted using other heat exchange modes such as heat pipe, water oil heat exchanger, so that frequency-converting control device 200
Structure compacter.
As Figure 1-Figure 2, according to one embodiment of present invention, multiple single-phase frequency-variable module 220 stackings are placed and are connected
It is connected on direct current stack bus bar 210 side, multiple DC filter capacitor group 240 stackings are placed and are connected to direct current stack bus bar 210
Opposite side.Thus, it is possible to make full use of the height space of frequency-converting control device 200, high-low pressure element subregion is conducive to arrange,
High voltage device is avoided to produce electromagnetic interference to low voltage component.
The single-phase frequency-variable module 220 that stacking is placed and DC filter capacitor group 240 reduce setting of direct current stack bus bar 210
Meter difficulty, reduces the stray inductance of direct current stack bus bar 210, decreases due to voltage spikes to electric elements and master row insulating performance
The infringement causing, makes direct current stack bus bar 210 have stronger Electromagnetic Compatibility.Meanwhile, also help increase high voltage device
Electric equipment compartment and housing 100 between away from, be easy to set up electric insulation protection device around high voltage device, improve flame-proof converter electricity
The High-Voltage Insulation performance of machine.Additionally, the stacking of single-phase frequency-variable module 220 to be placed on the side of DC master row layer, it is easy to interior water-cooled
Unit 230 carries out independent radiating to each single-phase frequency-variable module 220, reduces the design difficulty of interior water cooling unit 230.Will be straight
Stream filter capacitor group 240 stacking is placed on the opposite side of direct current stack bus bar 210, can also make the knot of frequency-converting control device 200
Structure is compacter, reduces the volume of frequency-converting control device 200.
As shown in figure 1, according to one embodiment of present invention, it is provided with many between two adjacent single-phase frequency-variable modules 220
Individual supporting part 250.Thus, multiple single-phase frequency-variable modules 220 can be made to be securely attached together, thus improve VFC dress
Put 200 structural stability.
In some specific embodiments of the present invention, single-phase frequency-variable module 220 includes three.As shown in Fig. 1-Fig. 7, often
Individual single-phase frequency-variable module 220 includes：Many stack bus bars 221, metal support 222 and insulation adnexa 223.Specifically, as schemed
Shown in 11, both positive and negative polarity layer 2211 that many stack bus bars 221 include from top to bottom stacking gradually again, interconnection layer 2212, zero layer 2213
And exchange articulamentum 2214.Alternatively, the both positive and negative polarity layer 2211 of many stack bus bars 221, interconnection layer 2212, zero layer 2213 and
Exchange articulamentum 2214 all the copper plate for 1.5mm-2.5mm can be folded and forms by thickness.In order to improve the antioxygen of copper plate
Change ability, the both positive and negative polarity layer 2211 of many stack bus bars 221, the table of interconnection layer 2212, zero layer 2213 and exchange articulamentum 2214
Face all carries out tin plating process, and thickness of coating is more than 5 μm.Preferably, both positive and negative polarity layer 2211, interconnection layer 2212, zero layer 2213 and
It is respectively equipped with interlayer insulating film 2215 between every adjacent two layers between exchange articulamentum 2214.
The upper surface of both positive and negative polarity layer 2211 is equipped with the first insulating coating 2216, the lower surface paving of exchange articulamentum 2214
It is provided with the second insulating coating 2217.Thus, improve many stack bus bars 221 exhausted under the rugged environments such as humidity, dust storm
Edge performance.Wherein in order to prevent from entering in many stack bus bars 221 and leading to the insulation of many stack bus bars 221 because of dust, moisture
Hydraulic performance decline is it is preferable that the first insulating coating 2216 and the second insulating coating 2217 neighboring are along using pressing edge sealing work
Skill is processed, so that forming total enclosing structure between the first insulating coating 2216 and the second insulating coating 2217.
Metal support 222 is disposed on the lower section of many stack bus bars 221, is located at metal support 222 in order to support
On electric elements（Not shown）.Alternatively, the upper surface roughness requirements of metal support 222 are less than 1.6um-3.2um,
Planarity requirements are less than 0.1mm/m.Thus, can make there is good contact effect between electric elements and metal support 222, have
Beneficial to interior water cooling unit 230, the electric elements on metal support 222 are radiated.As shown in fig. 6, metal support 222
Inside also there is cooling water channel 232.For reducing the volume of metal support 222, cooling water channel 232 using the flat width in section and can become
The cooling water channel of rectangle.Thus, in the case of identical turnover discharge, reduce metal support 222 temperature rise, improve
The heat-sinking capability of interior water cooling unit 230.
Insulation adnexa 223 is located at the side of metal support 222, and connects with metal support 222 and many stack bus bars 221
Connect, in order to increase the creep age distance between many stack bus bar 221 outfans and metal support 222.By setting insulation adnexa
223, the spacing between many stack bus bars 221 and metal support 222 can be reduced to the thickness of insulation adnexa 223, thus
Need not be subject to electric effect of distance, and then improve the compact conformation degree of single-phase frequency-variable module 220, reduce frequency-converting control device
200 volume.
It should be noted that setting up insulation adnexa 223 between many stack bus bars 221 and metal support 222, by control
The length of system insulation adnexa is increasing the creep age distance between many stack bus bars and metal support, and then makes many stack bus bars
Spacing between 221 and metal support 222 is reduced to the thickness of insulation adnexa 223, so that single-phase frequency-variable module 220 need not
By electric effect of distance, thus, improve the compact conformation degree of single-phase frequency-variable module 220, reduce frequency-converting control device 200
Volume.In addition, the number of plies of many stack bus bars 221 is increased to four layers, single-phase frequency-variable module 220 can be made to be applied to high-power frequency conversion
Control device.
As shown in fig. 6, according to some embodiments of the present invention, there is in metal support 222 at least one cooling water channel
232, to cool down to single-phase frequency-variable module 220.Preferably, the water inlet 2321 of every cooling water channel 232 and outlet
2322 the same sides that all may be located at metal support 222.Thus, it is easy to the arrangement of cooling water channel 232, reduce interior water-cooled list
The design difficulty of unit 230.Specifically, every cooling water channel 232 all can be formed as U-shaped water channel.Certainly, cooling water channel 232
Structure is not limited to this, as long as it can meet the cooling requirements of single-phase frequency-variable module 220.
As shown in fig. 7, linking together with insulation adnexa 223 for convenience of by many stack bus bars 221, according to the one of the present invention
Individual embodiment, one end of the neighbouring insulation adnexa 223 of exchange articulamentum 2214 has multiple first connection terminals spaced apart
22141, the first connection terminal 22141 is connected with insulation adnexa 223.Certainly, in the neighbouring insulation adnexa of exchange articulamentum 2214
223 one end arranges multiple first connection terminals 22141 spaced apart, is also convenient for many stack bus bars 221 and other electrical equipment units
Part connects.
In some specific examples of the present invention, the first connection terminal 22141 includes：Flat part 22142 and bending part
22143.Specifically, flat part 22142 extends and is generally aligned in the same plane with exchanging articulamentum 2214 from exchange articulamentum 2214
On, bending part 22143 is vertical with flat part 22142 to be connected.It should be noted that for many stack bus bars 221 and insulation adnexa
223 connected mode does not do particular restriction.For example, in an optional embodiment of the present invention, bending part 22143 with absolutely
Edge adnexa 223 is bolted.
It is connected with direct current stack bus bar 210 for convenience of many stack bus bars 221, as shown in fig. 7, a reality according to the present invention
Apply example, in zero layer 2213, one end of adjacent DC stack bus bar 210 is provided with the second connection terminal 22131, on both positive and negative polarity layer 2211
One end of adjacent DC stack bus bar 210 is provided with two the 3rd connection terminals 22111 spaced apart, the second connection terminal
22131 and the 3rd connection terminal 22111 be connected with direct current stack bus bar 210 respectively.For the second connection terminal 22131 and the 3rd
The relative position of connection terminal 22111 does not do particular determination, as long as it can be easy to many stack bus bars 221 with other electric elements even
Connect.For example, as shown in figure 1, the second connection terminal 22131 is located between two the 3rd connection terminals 22111.
As shown in fig. 7, according to one embodiment of present invention, many stack bus bars 221 further include：Insulation strip 2218 He
Conductive pole 2219.Specifically, each layer in both positive and negative polarity layer 2211, interconnection layer 2212 and exchange articulamentum 2214 is equipped with absolutely
Edge strip 2218.It should be noted that the number of insulation strip 2218 on each layer and position can as the case may be depending on,
For example, both positive and negative polarity layer 2211 can be provided with an insulation strip 2218, interconnection layer 2212 can be provided with four insulation strip 2218.
All rivetings on each layer in both positive and negative polarity layer 2211, interconnection layer 2212, zero layer 2213 and exchange articulamentum 2214 have multiple conductions
Post 2219, the multiple conductive poles 2219 on wherein every layer and other layers pass through insulating washer 2220 electrical isolation.
Also, it should be noted as shown in fig. 7, being equipped with multiple anti-in the upper and lower surface of many stack bus bars 221
Climb electric insulation block 224.It is provided with the phase with anti-tracking collets 224 at the top of the electric elements being connected with many stack bus bars 221
The anti-tracking groove of coupling.Thus, increased the electric equipment compartment of many stack bus bars 221 and electric elements link position away from increasing
Creep age distance, improves many stack bus bar 221 integral insulation performances.
In addition it is also necessary to explanation, many stack bus bars 221 are by phase between conductive pole 2219 and corresponding electric elements
Mutually electrical connection is realized in contact.It is highly consistent that the conductive pole 2219 of connecting circuit element side stretches out.Thus, many laminations can be made
The structure of busbar 221 is more reasonable, compact.When different busbar layers press conductive pole 2219, insulating washer 2220 can be passed through
Cut off the annexation between many stack bus bars 221 and corresponding electric elements, thus reducing the internal electricity of many stack bus bars 221
The loop area that stream is formed, reduces many stack bus bar 221 stray inductances.
As shown in Figure 10-Figure 13, explosion-proof variable frequency motor according to embodiments of the present invention, including：Housing 100, electric machine assembly
（Not shown）, frequency-converting control device 200, filtering termination（Not shown）And outer water cooling unit 300（Not shown）.
Specifically, there is in housing 100 three first chambers being spaced apart from each other and connecting 110, second chamber 120 and
3rd chamber 130.It is interconnected by explosion-insulation surface between first to the 3rd chamber 130, can effectively reduce explosion suppresion surface
Quantity, reduces the complex degree of structure of explosion-proof variable frequency motor.Electric machine assembly is located in first chamber 110, frequency-converting control device
200 are located in second chamber 120, and filtering termination is located in the 3rd chamber 130.First being interconnected is to the 3rd chamber
130 are configured to same explosion-proof chamber, then will be electric for the connection between electric machine assembly, frequency-converting control device 200 and filtering termination
Cable shields in flame proof intracavity, it is to avoid the design of the labyrinth such as wire connection cavity, binding post, reduces wiring difficulty, decreases electricity
The electromagnetic interference to the other equipment outside housing 100 for the cable, improves the stability of explosion-proof variable frequency motor.
Electric machine assembly is connected respectively with frequency-converting control device 200 and filtering termination.Outer water cooling unit 300 is located at housing
With to frequency-converting control device 200 and filtering termination heat exchange on 100 lateral walls.Thus, reduce the body of explosion-proof variable frequency motor
Long-pending, improve the heat exchange efficiency of outer water cooling unit 300.
Explosion-proof variable frequency motor according to embodiments of the present invention, by by single-phase frequency-variable module 220 and DC filter capacitor group
240 stackings are placed, and improve compact conformation degree in length, width and height space for the frequency-converting control device 200, not only may be used
To reduce the volume of frequency-converting control device 200, make the structure of frequency-converting control device 200 compacter, reasonable, and also help
Increase electric equipment compartment between high voltage device and housing 100 away from being also beneficial to set up electric insulation protection dress around high voltage device
Put, improve the High-Voltage Insulation performance of frequency-converting control device 200.Additionally, water cooling unit in setting in frequency-converting control device 200
230, improve the radiating efficiency of frequency-converting control device 200.
It should be noted that, by electric machine assembly, frequency-converting control device 200 and filtering termination are located at and mutually interconnect
Logical first, to the 3rd chamber 130, makes the structure of explosion-proof variable frequency motor compacter, reasonable.Meanwhile, reduce group of motors
Wiring difficulty between part, frequency-converting control device 200 and filtering termination, decreases cable to its outside housing 100
The electromagnetic interference of his equipment, improves the stability of explosion-proof variable frequency motor.
As shown in Figure 10, in order to reduce the volume of explosion-proof variable frequency motor further, according to one embodiment of present invention,
Two chambers 120 are located at the top of first chamber 110, and the 3rd chamber 130 is located at one end of first chamber 110 and second chamber 120
（Right-hand member as shown in Figure 10）.First chamber 110 can be respectively communicated with second chamber 120, the 3rd chamber 130.Using electricity
The length of thermomechanical components（Above-below direction as shown in Figure 10）And height（Above-below direction as shown in Figure 10）Space, by frequency conversion
Control device 200, filtering termination and electric machine assembly become one, and reduce the volume of explosion-proof variable frequency motor, shorten
The length of connection cable between electric machine assembly and frequency-converting control device 200, reduces reflection and the superposition of harmonic wave, meanwhile,
Reduce the impact to explosion-proof variable frequency motor insulating properties for the crest voltage.
Additionally, it should be noted that, by second chamber 120 located at the top of first chamber 110, also help high-low pressure unit
Part subregion arrangement, thus avoiding the electromagnetic interference to low voltage component for the high voltage device, improve second chamber 120 inner height,
Compact conformation degree in length and width spaces, not only contribute to increase electric equipment compartment between high voltage device and housing 100 away from,
It is also beneficial to set up electric insulation protection device around high voltage device, improve the High-Voltage Insulation performance of explosion-proof variable frequency motor.
As shown in figure 11, according to one embodiment of present invention, pass through shape between second chamber 120 and first chamber 110
The gap 111 on first chamber 110 roof is become to connect.Thus, simplify wiring process, decrease cable to housing 100 outside
The electromagnetic interference of the other equipment in portion, improves the stability of explosion-proof variable frequency motor.In some specific examples of the present invention, slit
Mouth 111 can be rectangle or circular gap.It is understood that the structure of gap 111 is not limited to this, as long as it can be easy to
It is connected with each other between electric machine assembly and frequency-converting control device 200.
As shown in figure 11, a specific example according to the present invention, first chamber 110 is by the circle being located in housing 100
Tubular stator sleeve 112 limits, and electric machine assembly can be placed in cylindrical stator set 112.Alternatively, cylindrical stator set 112
The bottom in housing 100 can be soldered to.It is, of course, understood that the connection side of cylindrical stator set 112 and housing 100
Formula is not limited to this, and for example, cylindrical stator set 112 can also be integrally formed with housing 100.
As shown in figure 11, according to one embodiment of present invention, frequency-converting control device 200 is supported on cylindrical stator set
112 top.Thus, frequency-converting control device 200 can be made to be securely disposed in second chamber 120.Specifically, the present invention's
In one embodiment, the roof of cylindrical stator set 112 has upwards（As shown in the direction in Figure 11）The support column extending
（Not shown）, frequency-converting control device 200 by support column be supported on cylindrical stator set 112 top.Support column can weld
It is connected on the roof of cylindrical stator set 112.It should be noted that the connection side for support column and cylindrical stator set 112
Formula is not limited to this.Certainly, the modes of emplacement of frequency-converting control device 200 can as the case may be depending on.For example, VFC
Device 200 can also be suspended in second chamber 120.
In sum, explosion-proof variable frequency motor according to embodiments of the present invention has advantages below：
1）By by electric machine assembly, frequency-converting control device 200 and filtering termination be located at be interconnected first to
In 3rd chamber 130, make the structure more compact and reasonable of explosion-proof variable frequency motor, reduce electric machine assembly, frequency-converting control device 200
And the wiring difficulty between filtering termination；
2）First being interconnected is configured to an explosion-proof chamber to the 3rd chamber 130, and electric machine assembly, VFC are filled
Put 200 and filtering termination be located at flame proof intracavity, decrease the quantity of explosion suppresion surface, reduce the structure of explosion-proof variable frequency motor
Complexity.Meanwhile, also shorten the length of the cable between electric machine assembly, frequency-converting control device 200 and filtering termination
Degree, reduces the electromagnetic interference to the other equipment outside housing 100 for the cable, improves the stability of explosion-proof variable frequency motor；
3）By single-phase frequency-variable module 220 and DC filter capacitor group 240 are laminated placement, improve frequency-converting control device
The 200 compact conformation degree in length, width and height space, not only reduce the volume of frequency-converting control device 200, and
Also help the electric equipment compartment increasing between high voltage device and housing 100 away from reducing stray inductance and the electricity of direct current stack bus bar 210
The infringement that pointing peak causes to electric elements and master row insulating performance, is conducive to setting up electric insulation protection around high voltage device
Device, improves the High-Voltage Insulation performance of explosion-proof variable frequency motor；
4）Water cooling unit 230 in setting in the single-phase frequency-variable module 220 of frequency-converting control device 200, reduces interior water-cooled
The design difficulty of unit 230, improves the radiating efficiency of frequency-converting control device 200；
5）By setting up insulation adnexa 223 between many stack bus bars 221 and metal support 222, can be female by many laminations
Spacing between row 221 and metal support 222 is reduced to the thickness of insulation adnexa 223, so that single-phase frequency-variable module 220 is not
Must be subject to electric effect of distance, and then improve the compact conformation degree of single-phase frequency-variable module 220, reduce the body of frequency-converting control device
Long-pending；
6）The number of plies of many stack bus bars 221 is increased to four layers, single-phase frequency-variable module 220 can be made to be applied to high-power frequency conversion
Control device 200.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example
Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (18)
1. a kind of frequency-converting control device for explosion-proof variable frequency motor is it is characterised in that include：
Direct current stack bus bar；
The single-phase frequency-variable module that multiple stackings are placed, the plurality of single-phase frequency-variable module is all connected with described direct current stack bus bar,
Each described single-phase frequency-variable module includes metal support, insulation adnexa and many stack bus bars, and described many stack bus bars include
The both positive and negative polarity layer that from top to bottom stacks gradually, interconnection layer, zero layer and exchange articulamentum, wherein said both positive and negative polarity layer, interconnection layer,
It is respectively equipped with interlayer insulating film, the upper surface of described both positive and negative polarity layer between every adjacent two layers between zero layer and exchange articulamentum
It is equipped with the first insulating coating, the lower surface of described exchange articulamentum is equipped with the second insulating coating, and described metal supports
Portion is disposed on the lower section of described many stack bus bars, has cooling water channel in wherein said metal support, and described insulation is attached
Part is located at the side of described metal support and is connected with described many stack bus bars and described metal support；
For the interior water cooling unit that described single-phase frequency-variable module is cooled down；And
Multiple DC filter capacitor groups, described DC filter capacitor group is connected with described direct current stack bus bar.
2. the frequency-converting control device for explosion-proof variable frequency motor according to claim 1 is it is characterised in that described interior water-cooled
Unit includes：
Water pump；
At least one cooling water channel, at least one cooling water channel described is located in described single-phase frequency-variable module, each described cooling
Water channel has water inlet and outlet；
Enter water separator, described enter water separator respectively with the water inlet of described water pump and at least one cooling water channel described even
Logical；
Go out water separator, described go out water separator respectively with the outlet of described water pump and at least one cooling water channel described even
Logical.
3. the frequency-converting control device for explosion-proof variable frequency motor according to claim 2 is it is characterised in that described interior water-cooled
Unit also includes water water- to-water heat exchanger, described water water- to-water heat exchanger be connected to described in go out between water separator and described water pump.
4. the frequency-converting control device for explosion-proof variable frequency motor according to claim 1 is it is characterised in that the plurality of list
Phase inverter module layer stacks puts and is connected to described direct current stack bus bar side, and the plurality of DC filter capacitor group stacking is placed
And it is connected to the opposite side of described direct current stack bus bar.
5. the frequency-converting control device for explosion-proof variable frequency motor according to claim 1 is it is characterised in that adjacent two
It is provided with multiple supporting parts between described single-phase frequency-variable module.
6. the frequency-converting control device for explosion-proof variable frequency motor according to claim 1 is it is characterised in that described single-phase change
Frequency module includes three.
7. the frequency-converting control device for explosion-proof variable frequency motor according to claim 1 is it is characterised in that described metal props up
There is in support part cooling water channel described at least one.
8. the frequency-converting control device for explosion-proof variable frequency motor according to claim 7 is it is characterised in that every described cold
But the water inlet of water channel and outlet are respectively positioned on the same side of described metal support.
9. the frequency-converting control device for explosion-proof variable frequency motor according to claim 8 is it is characterised in that every described cold
But water channel is all formed as U-shaped water channel.
10. the frequency-converting control device for explosion-proof variable frequency motor according to claim 6 is it is characterised in that described exchange
One end of the neighbouring described insulation adnexa of articulamentum has multiple first connection terminals spaced apart, described first connection terminal
It is connected with described insulation adnexa.
11. frequency-converting control devices for explosion-proof variable frequency motor according to claim 10 are it is characterised in that described first
Connection terminal includes：
Flat part, described flat part extends and with described to exchange articulamentum in the same plane from described exchange articulamentum；
And
The bending part connected vertically with described flat part, described bending part is connected with described insulation adnexa.
12. frequency-converting control devices for explosion-proof variable frequency motor according to claim 11 are it is characterised in that described bending
Portion is bolted with described insulation adnexa.
13. frequency-converting control devices for explosion-proof variable frequency motor according to claim 1 are it is characterised in that described zero layer
One end of neighbouring described direct current stack bus bar be configured with the second connection terminal, the neighbouring described direct current lamination of described both positive and negative polarity layer
One end of busbar is configured with two the 3rd connection terminals spaced apart, described second connection terminal and described 3rd connection terminal
It is connected with described direct current stack bus bar respectively.
14. frequency-converting control devices for explosion-proof variable frequency motor according to claim 1 are it is characterised in that described fold more
Layer busbar further includes：
Insulation strip, each layer in wherein said both positive and negative polarity layer, interconnection layer and exchange articulamentum is equipped with described insulation strip；With
And
Conductive pole, all rivetings on each layer in wherein said both positive and negative polarity layer, interconnection layer, zero layer and exchange articulamentum have multiple institutes
State conductive pole, the plurality of conductive pole on wherein every layer passes through insulating washer electrical isolation with other layers.
15. frequency-converting control devices for explosion-proof variable frequency motor according to claim 1 are it is characterised in that described fold more
The described both positive and negative polarity layer of layer busbar, interconnection layer, the zero layer and exchange articulamentum copper plate folding for 1.5mm-2.5mm by thickness
System forms.
16. frequency-converting control devices for explosion-proof variable frequency motor according to claim 1 are it is characterised in that described fold more
The described both positive and negative polarity layer of layer busbar, the surface of interconnection layer, zero layer and exchange articulamentum all carry out tin plating process, and thickness of coating is big
In 5 μm.
17. frequency-converting control devices for explosion-proof variable frequency motor according to claim 1 are it is characterised in that described first
Insulating coating is processed along using pressing edge sealing process with described second insulating coating neighboring, so that the first insulating coating
Form total enclosing structure and the second insulating coating between.
A kind of 18. explosion-proof variable frequency motors are it is characterised in that include the VFC according to any one of claim 1-17
Device.
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| CN201410060332.9A CN103872924B (en) | 2014-02-21 | 2014-02-21 | Variable frequency controller and anti-explosion variable frequency motor with same |
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|---|---|---|---|
| CN201410060332.9A CN103872924B (en) | 2014-02-21 | 2014-02-21 | Variable frequency controller and anti-explosion variable frequency motor with same |
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| CN103872924B true CN103872924B (en) | 2017-02-22 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943656A (en) * | 2019-12-10 | 2020-03-31 | 东风汽车集团有限公司 | Double-motor controller structure of integrated DCDC for hybrid vehicle |
| CN113437880A (en) * | 2020-03-20 | 2021-09-24 | 上海颂奇机电设备有限公司 | Frequency conversion management governing system |
| EP4128498A1 (en) * | 2020-04-01 | 2023-02-08 | Atlas Copco (Wuxi) Compressor Co., Ltd. | Inverter power assembly |
| CN113497543B (en) * | 2020-04-01 | 2023-07-11 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | Frequency converter power assembly |
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