CN206023612U - For reducing the mounting structure of inverter output circuit stray inductance - Google Patents
For reducing the mounting structure of inverter output circuit stray inductance Download PDFInfo
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- CN206023612U CN206023612U CN201620979638.9U CN201620979638U CN206023612U CN 206023612 U CN206023612 U CN 206023612U CN 201620979638 U CN201620979638 U CN 201620979638U CN 206023612 U CN206023612 U CN 206023612U
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- 230000004888 barrier function Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- 230000005670 electromagnetic radiation Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
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Abstract
The utility model belongs to Motor Control Field, specifically provides a kind of mounting structure for reducing inverter output circuit stray inductance.The utility model aims to solve the problem that the existing problem that high-power servo-driver inverter output circuit dissipated power is big, peak voltage is high and strong to external radiation.Mounting structure of the present utility model includes three inverter circuits, includes per road inverter circuit again：First stack bus bar, the second stack bus bar, PN stack bus bars, output in flakes, multiple IGBT modules and multiple noninductive electric capacity.In the first end of IGBT module, its positive pole is electrically connected with the first stack bus bar, and its negative pole is electrically connected with the second stack bus bar, and the second end of IGBT module is electrically connected in flakes with output；The positive pole of PN stack bus bars is electrically connected with the power end positive pole of all IGBT modules respectively, and the negative pole of PN stack bus bars is electrically connected with the power end negative pole of all IGBT modules respectively.The mounting structure of this practicality reduces the interference of stray inductance, peak voltage and electromagnetic radiation with effectively dropping.
Description
Technical field
The utility model belongs to Motor Control Field, specifically provides a kind of for reducing inverter output circuit stray inductance
Mounting structure.
Background technology
IGBT (Insulated Gate Bipolar Transistor) also known as insulated gate bipolar transistor, are by BJT
The compound full-control type voltage driven type power semiconductor device that (double pole triode) and MOS (insulating gate type field effect tube) are constituted
Part, advantage of both the low conduction voltage drop of the high input impedance and GTR that have MOSFET concurrently.GTR saturation pressures reduce, current carrying density
Greatly, but driving current is larger；MOSFET driving power very littles, switching speed are fast, but conduction voltage drop is big, and current carrying density is little.IGBT
The advantage of both the above device is combined, driving power is little and saturation pressure reduces.DC voltage is highly suitable to be applied for for 600V
And the above converter system such as field such as alternating current generator, frequency converter, Switching Power Supply, lighting circuit, Traction Drive.
High-power servo-driver inverter output circuit is mainly used in DC voltage conversion is electric for the alternation of motor
Pressure, because monomer IGBT electric currents are limited, inversion output par, c adopts many IGBT parallel connections to be enough to drive more than 600kw motors to reach
Driving current.But be parallel with electric current on the major loop of IGBT conference is crossed so that dissipated power increases, peak voltage increases, right
External radiation strengthens.
Correspondingly, this area needs a kind of new inverter output circuit mounting structure to solve the above problems.
Utility model content
In order to solve the problems referred to above of the prior art, the existing high-power servo-driver inversion output electricity of solution has been
Road dissipated power is big, peak voltage is high and the problem strong to external radiation, and the utility model provides a kind of defeated for reducing inversion
Go out the mounting structure of circuit parasitic inductance, the mounting structure includes three inverter circuits, and three inverter circuits are used for will be straight
Stream voltage is transformed into three-phase alternating voltage；Inverter circuit described in per road includes the first stack bus bar, the second stack bus bar, output again
In flakes with least two IGBT modules；In the first end of the IGBT module, the positive pole of the IGBT module and described first
Stack bus bar is electrically connected, and the negative pole of the IGBT module is electrically connected with second stack bus bar, and the second of the IGBT module
End is electrically connected in flakes with the output；The inverter circuit also includes noninductive electric capacity, the noninductive electric capacity and the IGBT module
First end electrical connection.
Noninductive absorption power supply is connected by the both positive and negative polarity in IGBT module power end and significantly reduces posting for inverter circuit
Raw inductance.
In the optimal technical scheme of above-mentioned mounting structure, the mounting structure also includes third layer stack busbar, described
Three stack bus bars include positive pole and negative pole and the insulating barrier between the positive pole and the negative pole；The third layer stack is female
The positive pole of row is electrically connected with the positive pole of IGBT module each described, the negative pole of the third layer stack busbar and each described IGBT mould
The negative pole electrical connection of block.
By electrically connecting the both positive and negative polarity of third layer stack busbar respectively with the both positive and negative polarity of IGBT module, reduce further inverse
Become the stray inductance of circuit.
In the optimal technical scheme of above-mentioned mounting structure, the third layer stack busbar is PN stack bus bars.
In the optimal technical scheme of above-mentioned mounting structure, the positive pole and negative pole of the PN stack bus bars is respectively by conduction
Stud is electrically connected with the positive pole and negative pole of the IGBT module.
In the optimal technical scheme of above-mentioned mounting structure, each described inverter circuit includes three IGBT modules.
In the optimal technical scheme of above-mentioned mounting structure, the quantity of the IGBT module in each described inverter circuit
Identical.
In the optimal technical scheme of above-mentioned mounting structure, first stack bus bar and second stack bus bar are E
Type stack bus bar.
In the optimal technical scheme of above-mentioned mounting structure, the output is in flakes by conductive stud and the IGBT module
It is connected, and/or the IGBT module is distinguished with first stack bus bar and the second stack bus bar by conductive stud
Connection.
In the optimal technical scheme of above-mentioned mounting structure, the output is stack bus bar in flakes.
It will be appreciated to those of skill in the art that in optimal technical scheme of the present utility model, by IGBT moulds
It is connected with noninductive electric capacity at the both positive and negative polarity of block power end, and by the both positive and negative polarity of PN stack bus bars respectively with each IGBT module just
Negative pole is electrically connected so that inverter circuit not only significantly reduces stray inductance and peak voltage, and to electromagnetic interference
Serve certain inhibitory action.
Description of the drawings
Fig. 1 is the effect diagram for reducing the mounting structure of inverter output circuit stray inductance of the present utility model；
Fig. 2 is the circuit catenation principle figure for reducing inverter output circuit stray inductance of the present utility model.
Specific embodiment
With reference to the accompanying drawings describing preferred embodiment of the present utility model.Skilled artisan would appreciate that
It is that these embodiments are used only for explaining know-why of the present utility model, it is not intended that limit protection of the present utility model
Scope.For example, accompanying drawing 2 is intended to the operation principle of the inverter output circuit for illustrating mounting structure of the present utility model, electricity in accompanying drawing 2
The quantity of each element on road is not limited only to shown in Fig. 2, and those skilled in the art can make adjustment to which as needed, so as to
Adapt to specific application scenario.
It should be noted that in description of the present utility model, term " " center ", " on ", D score, "left", "right", " perpendicular
Directly ", the direction of instruction such as " level ", " interior ", " outward " or the term of position relationship are closed based on direction shown in the drawings or position
System, this are intended merely to facilitate description, rather than indicate or imply that described device or element must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or hint relative importance.
In addition it is also necessary to illustrate, in description of the present utility model, unless otherwise clearly defined and limited, art
Language " installation ", " being connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or
It is integrally connected；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to by between intermediary
Connect connected, can be the connection of two element internals.To those skilled in the art, can understand as the case may be above-mentioned
Concrete meaning of the term in the utility model.
As shown in figure 1, the mounting structure for reducing inverter output circuit stray inductance of this practicality include three inverse
Become circuit 1, include per road inverter circuit 1 again：First stack bus bar 11, the second stack bus bar 12, output 13, four IGBT in flakes
(Insulated Gate Bipolar Transistor), insulated gate bipolar transistor) module 14 and four noninductive electric capacity
15.In the first end (right-hand member of IGBT module 14 in Fig. 1) of IGBT module 14, the positive pole of IGBT module 14 and the first lamination are female
Row 11 electrically connects, it is preferable that be fixedly connected by conductive lever, or those skilled in the art can also adopt other connection shapes
Formula, for example, welding；The negative pole of IGBT module 14 is electrically connected with the second stack bus bar 12, it is preferable that is fixed by conductive lever and is connected
Connect, or those skilled in the art can also adopt other types of attachment, for example, welding.Second end (Fig. 1 of IGBT module 14
The left end of middle IGBT module 14) 13 electrically connected with output in flakes, it is preferable that it is fixedly connected by conductive lever, or this area
Technical staff can also adopt other types of attachment, for example, welding.
With continued reference to Fig. 1, noninductive electric capacity 15 is fixedly mounted on the first end of IGBT module 14, and noninductive electric capacity 15 is just
Pole is electrically connected with the positive pole of IGBT module 14, it is preferable that be fixedly connected using conductive lever, or this area can also adopt which
His connected mode, for example, welding；The negative pole of noninductive electric capacity 15 is electrically connected with the negative pole of IGBT module 14, it is preferable that using leading
Electric screw rod is fixedly connected, or this area can also adopt other connected modes, for example, welding.Noninductive electric capacity 15 is arranged on
The generation of peak voltage in inverter circuit 1 can effectively be suppressed in inverter circuit 1.
Skilled addressee readily understands that, by inductance estimation estimation equation L=3.19la/b, (L=nH, l=lead
Body length, a=dielectric thickness, b=conductor widths) understand the size of inductance with the thickness of the length of conductor and conductor into just
Than being inversely proportional to the width of conductor, therefore, in order to reduce stray inductance, ensureing that the first stack bus bar 11 and the second lamination are female
On the premise of row 12 can be connected with all IGBT modules 14 on each inverter circuit 1, can as best one can by the first stack bus bar 11
Be made with the second stack bus bar 12 wider, shorter, while as much as possible by between each IGBT module 14 mounting distance contract
Less.In the preferred embodiment for reducing the mounting structure of inverter output circuit stray inductance of the present utility model, the
One stack bus bar 11 and the second stack bus bar 12 are all provided with being set to E type stack bus bars so that the first stack bus bar 11 and the second lamination
Busbar 12 is convenient with the connection of IGBT module 14 and noninductive electric capacity 15.
It will be appreciated to those of skill in the art that three outputs 13 can also be arranged to stack bus bar in flakes, with
It is easy to further reduce the stray inductance in each inverter circuit 1.
Fig. 1 is further regarded to, the mounting structure of this practicality also includes that third layer stack busbar 2, third layer stack busbar 2 include
Positive pole (not shown), negative pole (not shown) and the insulating barrier (not shown) being arranged between positive pole and negative pole.
The positive pole of third layer stack busbar 2 is electrically connected with the positive pole in 14 first end of IGBT module, it is preferable that is fixed by conductive stud and is connected
Connect, or those skilled in the art can also adopt other connected modes, for example, connected by wire, and will arrive wire
Two ends are welded together with the positive pole of third layer stack busbar 2 and the positive pole of IGBT module 14 respectively；The negative pole of third layer stack busbar 2
Electrically connect with the negative pole in 14 first end of IGBT module, it is preferable that be fixedly connected by conductive stud, or people in the art
Member can also adopt other connected modes, for example, be connected by wire, and the two ends to wire are female with third layer stack respectively
The negative pole of the negative pole of row 2 and IGBT module 14 welds together.As shown in fig. 1, third layer stack busbar 2 is located at all IGBT moulds
The top of block 14, and therefore IGBT module 14 is covered.It is further preferred that third layer stack busbar 2 is PN stack bus bars.
Skilled addressee readily understands that, third layer stack busbar 2 can further reduce the stray inductance on each inverter circuit 1
And peak voltage, while the interference to electromagnetic radiation also plays certain inhibitory action.
It will be appreciated to those of skill in the art that the component number and connection side in each inverter circuit 1 is ensured
Under the premise of formula identical, the quantity of IGBT module 14 can be arbitrary value, as long as the three-phase alternating voltage voltage and current of output
Meet the demand of user；Also not necessarily connect noninductive electric capacity 15 in each IGBT module 14 simultaneously, as long as ensure that
Peak voltage is in the range of equipment is allowed.
As shown in Fig. 2 showing for reducing the circuit catenation principle of inverter output circuit stray inductance.By three simultaneously
DC voltage is transformed into three-phase alternating voltage output by the inverter circuit for being associated with IGBT module, and by noninductive electric capacity to peak value electricity
Pressure is eliminated.It should be noted that the circuit connection diagram in Fig. 2 is intended to help those skilled in the art to of the present utility model
Understood for reducing the mounting structure of inverter output circuit stray inductance, do not required that each electronic component and the Fig. 1 in Fig. 2
In the model of each electronic component, quantity identical.
So far, the technical solution of the utility model is described already in connection with preferred embodiment shown in the drawings, but, this
Art personnel are it is easily understood that protection domain of the present utility model is expressly not limited to these specific embodiments.?
On the premise of without departing from principle of the present utility model, those skilled in the art can make the change of equivalent to correlation technique feature
Or replace, the technical scheme after these are changed or replace it is fallen within protection domain of the present utility model.
Claims (9)
1. a kind of mounting structure for reducing inverter output circuit stray inductance, it is characterised in that the mounting structure includes
Three inverter circuits, three inverter circuits are used for for DC voltage being transformed into three-phase alternating voltage；
Wherein, each described inverter circuit includes the first stack bus bar, the second stack bus bar, output in flakes with least two again
IGBT module；
In the first end of the IGBT module, the positive pole of the IGBT module is electrically connected with first stack bus bar, described
The negative pole of IGBT module is electrically connected with second stack bus bar, and the second end of the IGBT module is electrically connected in flakes with the output
Connect；
Wherein, each described inverter circuit also includes noninductive electric capacity, and the noninductive electric capacity is electric with the first end of the IGBT module
Connection.
2. the mounting structure for reducing inverter output circuit stray inductance according to claim 1, it is characterised in that institute
Stating mounting structure also includes that third layer stack busbar, the third layer stack busbar include positive pole and negative pole and be located at positive pole and negative pole
Between insulating barrier；
The positive pole of the third layer stack busbar is electrically connected with the positive pole of IGBT module each described, the third layer stack busbar negative
Pole is electrically connected with the negative pole of IGBT module each described.
3. the mounting structure for reducing inverter output circuit stray inductance according to claim 2, it is characterised in that institute
It is PN stack bus bars to state third layer stack busbar.
4. the mounting structure for reducing inverter output circuit stray inductance according to claim 3, it is characterised in that institute
The positive pole and negative pole for stating PN stack bus bars is electrically connected with the positive pole and negative pole of the IGBT module by conductive stud respectively.
5. the mounting structure for reducing inverter output circuit stray inductance according to any one of Claims 1 to 4, its
It is characterised by, each described inverter circuit includes three IGBT modules.
6. the mounting structure for reducing inverter output circuit stray inductance according to any one of Claims 1 to 4, its
It is characterised by, the quantity of the IGBT module in each described inverter circuit is identical.
7. the mounting structure for reducing inverter output circuit stray inductance according to any one of Claims 1 to 4, its
It is characterised by, first stack bus bar and second stack bus bar are E type stack bus bars.
8. the mounting structure for reducing inverter output circuit stray inductance according to any one of Claims 1 to 4, its
It is characterised by, the output is connected with the IGBT module by conductive stud in flakes, and/or the IGBT module is logical
Cross conductive stud to be connected with first stack bus bar and the second stack bus bar respectively.
9. the mounting structure for reducing inverter output circuit stray inductance according to claim 8, it is characterised in that institute
It is stack bus bar in flakes to state output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620979638.9U CN206023612U (en) | 2016-08-29 | 2016-08-29 | For reducing the mounting structure of inverter output circuit stray inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620979638.9U CN206023612U (en) | 2016-08-29 | 2016-08-29 | For reducing the mounting structure of inverter output circuit stray inductance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206023612U true CN206023612U (en) | 2017-03-15 |
Family
ID=58253663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620979638.9U Active CN206023612U (en) | 2016-08-29 | 2016-08-29 | For reducing the mounting structure of inverter output circuit stray inductance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206023612U (en) |
-
2016
- 2016-08-29 CN CN201620979638.9U patent/CN206023612U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 101500 No. 9 Yunxi Sixth Street, Miyun District Economic Development Zone, Beijing Patentee after: Super Synchronization Co., Ltd. Address before: 101500, 200 meters West Village, ten Li village, Beijing, Miyun Patentee before: BEIJING CHAOTONGBU SERVO CO., LTD. |
|
| CP03 | Change of name, title or address |