CN204103749U - A kind of laminated bus bar for three level active filter - Google Patents
A kind of laminated bus bar for three level active filter Download PDFInfo
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- CN204103749U CN204103749U CN201420596752.4U CN201420596752U CN204103749U CN 204103749 U CN204103749 U CN 204103749U CN 201420596752 U CN201420596752 U CN 201420596752U CN 204103749 U CN204103749 U CN 204103749U
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- transverse slat
- location hole
- bus bar
- riser
- active filter
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Abstract
For a laminated bus bar for three level active filter, relate to force device connection area.The utility model is in order to solve the problem that existing three level laminated bus bar is not easily installed, busbar structure is unintelligible, anti-interference is poor, reliability is lower, space availability ratio is not high and do not grow service life.Four pairs of electric capacity jacks that the utility model is arranged with it by the plate of riser and the L-shaped connection of transverse slat, riser, the three group IGBT contact pin fixing along the edge of the length direction of transverse slat, staff is made to be easy to find installation site when the IGBT installed in three level active filter and electric capacity, and install easily, only need to insert in corresponding jack.The utility model is also applicable to low pressure three level active filter.
Description
Technical field
The utility model relates to force device connection area.
Background technology
Busbar is the first-selected conductor of alternating current-direct current loop conveying big current, and be common in electrical-chemistry method, electric substation's distributing system, electrician's industry commonly uses conductor etc.Traditional busbar needs repeatedly to install, structure is not compact, the overall dimensions of equipment is comparatively large, cost is high, stray electrical inductance value large, the design of electric capacity is difficult to optimize, copper base is exposed and service life generally at about 3 years.In recent years in order to overcome the shortcoming of traditional busbar, rectangle copper bus-bar generally uses in industry spot.
Three level active filter (see Fig. 5) requirement to laminated bus bar is higher; laminated bus bar is for completing the electrical connection of power circuit and device in power electronic product; circuit distributed inductance is reduced by the version of the stacked parallel distribution of both positive and negative polarity; thus reduce the peak-inverse voltage at power component two ends; reduce power device to the requirement of voltage protection absorbing circuit; improve power device reliability of operation and stability; improve the integrated level of circuit simultaneously, be convenient to maintenance maintenance.If laminated bus bar can't meet the quality requirement, then there will be phenomenon as shown in Figure 6, affect the normal work of three level active filter.
But there is problems such as not easily installing, structure is unintelligible, anti-interference is poor, reliability is lower, space availability ratio is not high and do not grow service life in the laminated bus bar of existing three level active filter.
Utility model content
The utility model, in order to solve the problem that existing three level laminated bus bar is not easily installed, busbar structure is unintelligible, anti-interference is poor, reliability is lower, space availability ratio is not high and do not grow service life, proposes a kind of laminated bus bar for three level active filter.
For a laminated bus bar for three level active filter, it comprises: riser and transverse slat; Riser and transverse slat include top layer, intermediate layer and bottom, and are cuboid; The outside of top layer and bottom is coated with insulating barrier, and is tightly connected, and top layer, intermediate layer and bottom are structure as a whole; Riser and the L-shaped connection of transverse slat and be structure as a whole;
The plate of riser is provided with four pairs of electric capacity jacks with it, and distance between adjacent two pairs of electric capacity jacks is equal, and often pair of electric capacity jack includes a positive pole jack and a negative pole jack; Described positive pole jack and negative pole jack are respectively used to the both positive and negative polarity installing electrochemical capacitor;
The edge of the length direction of transverse slat is fixed with three groups of IGBT contact pin, and is structure as a whole with transverse slat, and the distance between two groups of adjacent IGBT contact pin is equal; Often organize IGBT contact pin and comprise a grid location hole, a drain electrode location hole and a source electrode location hole; Described grid location hole is for connecting the grid of IGBT, and described drain electrode location hole is for connecting the drain electrode of IGBT, and described source electrode location hole is for connecting the source electrode of IGBT.
For a laminated bus bar for three level active filter, it also comprises DC voltage electrode test lead, direct voltage negative pole test lead and neutral test lead; DC voltage electrode test lead and direct voltage negative pole test lead are all fixed on the left side of described riser; Direct current negative pole test lead is fixed on left side or the right side of described transverse slat.
Four pairs of electric capacity jacks that the utility model is arranged with it by the plate of riser and the L-shaped connection of transverse slat, riser, the three group IGBT contact pin fixing along the edge of the length direction of transverse slat, staff is made to be easy to find installation site when the IGBT installed in three level active filter and electric capacity, and install easily, only need to insert in corresponding jack.
Laminated bus bar described in the utility model, clear in structure, space availability ratio is high, be structure as a whole due to riser and the L-shaped connection of transverse slat, three groups of IGBT contact pin, and be also structure as a whole with transverse slat, make laminated bus bar described in the utility model have stronger anti-interference and reliability, and further ensuring the service life of described laminated bus bar, the service life of laminated bus bar described in the utility model can reach 30 years.
The utility model is also applicable to low pressure three level active filter.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of laminated bus bar described in the utility model;
Fig. 2 is the front view of laminated bus bar described in the utility model;
Fig. 3 is the vertical view of laminated bus bar described in the utility model;
Fig. 4 is the generalized section of laminated bus bar described in the utility model;
Fig. 5 is the circuit diagram of the three level active filter described in background technology;
Fig. 6 is the IGBT shutoff waveform when laminated bus bar described in background technology can't meet the quality requirement.
Embodiment
Embodiment one, reference Fig. 1, Fig. 2, Fig. 3 and Fig. 4 illustrate present embodiment, a kind of laminated bus bar for three level active filter of a kind of laminated bus bar for three level active filter described in present embodiment, it comprises: riser 11 and transverse slat 10; Riser 11 and transverse slat 10 include top layer, intermediate layer and bottom, and are cuboid; Intermediate layer is dielectric film, and top layer and bottom are copper coin; The outside of top layer and bottom is coated with insulating barrier, and is tightly connected, and top layer, intermediate layer and bottom are structure as a whole; Riser 11 and the L-shaped connection of transverse slat 10 and be structure as a whole;
The plate of riser 11 is provided with four pairs of electric capacity jacks 5 with it, and distance between adjacent two pairs of electric capacity jacks 5 is equal, and often pair of electric capacity jack 5 includes a positive pole jack 1 and a negative pole jack 6; Described positive pole jack 1 and negative pole jack 6 are respectively used to the both positive and negative polarity installing electrochemical capacitor;
Edge along the length direction of transverse slat 10 is fixed with three groups of IGBT contact pin, and is structure as a whole with transverse slat 10, and the distance between two groups of adjacent IGBT contact pin is equal;
Often organize IGBT contact pin and include a gate bonding pads, a drain electrode brace and a source bond pads, and three braces are the contact pin of " L " shape, and all dextrorotation turn 90 degrees the edge of the length direction being fixed on described transverse slat 10, the bottom of " L " shape contact pin and the bottom of described transverse slat 10 are positioned at same level;
Gate bonding pads has grid location hole 3; Drain electrode brace has a drain electrode location hole 7; Source bond pads has a source electrode location hole 8; Described grid location hole 3, drain electrode location hole 7 are parallel with described riser 11 with the central axis of source electrode location hole 8;
Described grid location hole 3 is for connecting the grid of IGBT, and described drain electrode location hole 7 is for connecting the drain electrode of IGBT, and described source electrode location hole 8 is for connecting the source electrode of IGBT.
In present embodiment, the bus that laminated bus bar described in the utility model belongs to a kind of multi-layer compound structure connects row, compared with traditional wiring mode, in three level device, use composite bus bar can provide modern, be easy to design and installation fast and the conducting system of clear in structure.Described laminated bus bar has the following advantages compared with traditional busbar:
1, the distributed inductance on effective reduction busbar, particularly to the application of power electronic device, reduces and makes device failure due to voltage breakdown; 2, electric capacity is uniformly distributed, reduces self-resistance and the power loss of busbar line, makes heating minimum; 3, there is good electric conductivity, and impedance and voltage attenuation little; 4, reduce electromagnetic interference, radio frequency interference, antifouling property is good; 5, have the security performance of reliability and Geng Gao, and during work, temperature is lower, easy cooling, has less temperature rise; 6, busbar structure has the construction module of making to measure, and multiple interfaces is selected, and is convenient to install and Site Service.
Busbar layout of the present utility model is the modes of emplacement of busbar in three level device, adopts stacked modes of emplacement, to make the area of the commutation circuit of three level active filter reduce.
Embodiment two, present embodiment are further illustrating a kind of laminated bus bar for three level active filter described in embodiment one, in present embodiment, it also comprises DC voltage electrode test lead 9, direct voltage negative pole test lead 2 and neutral test lead 4; DC voltage electrode test lead 9 and direct voltage negative pole test lead 2 are all fixed on the left side of described riser 11; Direct current negative pole test lead 2 is fixed on left side or the right side of described transverse slat 10.
In present embodiment, described laminated bus bar adopts neutral point design, reduces the impact of the equivalent inductance of busbar and the shutoff voltage spike of switching device thereof.The positive and negative sampling of direct current and discharge resistance, grading resistor carries out wiring extraction by DC voltage electrode test lead 9 and direct voltage negative pole test lead 2, the overall inversion circuit of final composition.
Embodiment three, present embodiment are further illustrating a kind of laminated bus bar for three level active filter described in embodiment one, and in present embodiment, described dielectric film is double-layer PET film.
In present embodiment, the selection of dielectric film has taken into full account the insulation distance between busbar, and minimum creepage distance, the factors such as minimum electric clearance and the number of plies, dielectric film plays to be avoided producing starting the arc phenomenon between row and row.
Embodiment four, present embodiment are further illustrating a kind of laminated bus bar for three level active filter described in embodiment one, in present embodiment, adopt adhesive bond between described dielectric film and copper coin.
Claims (4)
1. for a laminated bus bar for three level active filter, it is characterized in that, it comprises: riser (11) and transverse slat (10); Riser (11) and transverse slat (10) include top layer, intermediate layer and bottom, and are cuboid; Intermediate layer is dielectric film, and top layer and bottom are copper coin; The outside of top layer and bottom is coated with insulating barrier, and is tightly connected, and top layer, intermediate layer and bottom are structure as a whole; Riser (11) and transverse slat (10) L-shaped connection and be structure as a whole;
The plate of riser (11) is provided with four pairs of electric capacity jacks (5) with it, and distance between adjacent two pairs of electric capacity jacks (5) is equal, often pair of electric capacity jack (5) includes a positive pole jack (1) and a negative pole jack (6); Described positive pole jack (1) and negative pole jack (6) are respectively used to the both positive and negative polarity installing electrochemical capacitor;
Edge along the length direction of transverse slat (10) is fixed with three groups of IGBT contact pin, and is structure as a whole with transverse slat (10), and the distance between two groups of adjacent IGBT contact pin is equal;
Often organize IGBT contact pin and include a gate bonding pads, a drain electrode brace and a source bond pads, and three braces are the contact pin of " L " shape, and all dextrorotation turn 90 degrees the edge of the length direction being fixed on described transverse slat (10), the bottom of " L " shape contact pin and the bottom of described transverse slat (10) are positioned at same level;
Gate bonding pads has grid location hole (3); Drain electrode brace has a drain electrode location hole (7); Source bond pads has a source electrode location hole (8); Described grid location hole (3), drain electrode location hole (7) parallel with described riser (11) with the central axis of source electrode location hole (8);
Described grid location hole (3) is for connecting the grid of IGBT, and described drain electrode location hole (7) is for connecting the drain electrode of IGBT, and described source electrode location hole (8) is for connecting the source electrode of IGBT.
2. a kind of laminated bus bar for three level active filter according to claim 1, it is characterized in that, it also comprises DC voltage electrode test lead (9), direct voltage negative pole test lead (2) and neutral test lead (4); DC voltage electrode test lead (9) and direct voltage negative pole test lead (2) are all fixed on the left side of described riser (11); Direct current negative pole test lead (2) is fixed on left side or the right side of described transverse slat (10).
3. a kind of laminated bus bar for three level active filter according to claim 1, is characterized in that, described dielectric film is double-layer PET film.
4. a kind of laminated bus bar for three level active filter according to claim 1, is characterized in that, adopt adhesive bond between described dielectric film and copper coin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420596752.4U CN204103749U (en) | 2014-10-15 | 2014-10-15 | A kind of laminated bus bar for three level active filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420596752.4U CN204103749U (en) | 2014-10-15 | 2014-10-15 | A kind of laminated bus bar for three level active filter |
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| Publication Number | Publication Date |
|---|---|
| CN204103749U true CN204103749U (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420596752.4U Expired - Fee Related CN204103749U (en) | 2014-10-15 | 2014-10-15 | A kind of laminated bus bar for three level active filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904732A (en) * | 2017-12-11 | 2019-06-18 | 镇江西杰电气有限公司 | A kind of insulation busbar |
| CN110474518A (en) * | 2019-07-30 | 2019-11-19 | 国电南瑞科技股份有限公司 | A kind of three level laminated bus bars inhibiting stray inductance |
-
2014
- 2014-10-15 CN CN201420596752.4U patent/CN204103749U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904732A (en) * | 2017-12-11 | 2019-06-18 | 镇江西杰电气有限公司 | A kind of insulation busbar |
| CN109904732B (en) * | 2017-12-11 | 2020-06-09 | 镇江西杰电气有限公司 | Insulating busbar |
| CN110474518A (en) * | 2019-07-30 | 2019-11-19 | 国电南瑞科技股份有限公司 | A kind of three level laminated bus bars inhibiting stray inductance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20201015 |
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| CF01 | Termination of patent right due to non-payment of annual fee |