CN100570963C - The fixed connection structure of frequency changer direct current bus - Google Patents
The fixed connection structure of frequency changer direct current bus Download PDFInfo
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- CN100570963C CN100570963C CNB2007100480403A CN200710048040A CN100570963C CN 100570963 C CN100570963 C CN 100570963C CN B2007100480403 A CNB2007100480403 A CN B2007100480403A CN 200710048040 A CN200710048040 A CN 200710048040A CN 100570963 C CN100570963 C CN 100570963C
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- insulation board
- bottom conductor
- top conductor
- direct current
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Abstract
The present invention relates to a kind of fixed connection structure of frequency changer direct current bus, comprising: top conductor, insulation board, a N*M electric capacity are the capable arrangement of N row M, and N, M are positive integers; Also comprise N bottom conductor; Insulation board is between top conductor and bottom conductor; One end of top conductor be a recessed ledge frame face and join with the positive terminal of first column capacitance, the other end is external; The recessed ledge frame face of the negative terminal of first column capacitance and first bottom conductor one end joins, and the recessed ledge frame face of first bottom conductor other end and the positive terminal of secondary series electric capacity join; One end and the N column capacitance negative terminal of N bottom conductor join, and the other end is external; The invention has the beneficial effects as follows: need not at bus top conductor and insulating layer perforating, design processing is more convenient, does not need strict assembly precision, does not increase the copper coin difficulty of processing when reducing two conductor plate distances as far as possible, guarantees maximum copper coin area.
Description
Technical field
The present invention relates to a kind of frequency converter, relate in particular to the fixed connection structure of dc bus in this frequency converter.
Background technology
Frequency changer direct current bus should have lower stray inductance, to reduce peak voltage, obtains higher reliability.Traditional lead and narrow copper bar are difficult to meet the demands.
At present a lot of frequency converter products have adopted low sense bus technology, and the dc bus of its capacitance group part adopts thin and wide copper coin to replace lead or copper bar to reduce stray inductance.Common copper coin mounting structure has two kinds: the firstth, last lower conductor is installed in respectively on the electric capacity, and negative plate is following, and positive plate is maked somebody a mere figurehead above negative plate, reserves certain air gap, as shown in Figure 1; The secondth, last lower conductor is stacked together, to isolate with insulating material between two-layer, all splicing ears are positioned at same plane, link to each other with capacitance group with convenient, as shown in Figure 2.Both compare, and the latter more helps reducing stray inductance because the distance between two conductors is littler, but owing to is connected by bolt between electric capacity and copper coin, therefore need while perforate on last lower conductor and insulating barrier, and bolt is passed through.Do so on the one hand the processing and the precision of assembling are had higher requirement, difficulty of processing and cost have been increased, brought creepage danger on the other hand after the perforate again, need to increase the aperture of copper coin perforate, therefore need to remove the larger area copper coin, and the reduction that reduces also can cause the bus performance of copper coin area.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of fixed connection structure of frequency changer direct current bus, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention includes: top conductor, insulation board, a N*M electric capacity are the capable arrangement of N row M, and N, M are positive integers; Also comprise N bottom conductor; Insulation board is between top conductor and bottom conductor; One end of described top conductor be a recessed ledge frame face and join with the positive terminal of first column capacitance, the other end is external; Recessed ledge frame face one end of the negative terminal of first column capacitance and first bottom conductor one end joins, and the recessed ledge frame face of first bottom conductor other end and the positive terminal of secondary series electric capacity join; One end and the N column capacitance negative terminal of N bottom conductor join, and the other end is external.
Compared with prior art, the invention has the beneficial effects as follows: need not at bus top conductor and insulating layer perforating, design processing is more convenient; Do not need strict assembly precision; When reducing two conductor plate distances, do not increase the copper coin difficulty of processing as far as possible, guarantee maximum copper coin area; Therefore can save manufacturing cost, reduce stray inductance, improve the bus performance.
Description of drawings
Fig. 1 is a kind of connected mode of copper coin and capacitance group in the prior art;
Fig. 2 is the another kind of connected mode of copper coin and capacitance group in the prior art;
Fig. 3 is a structure chart of the present invention;
Fig. 4 is a connected mode of insulation board and top conductor and bottom conductor among Fig. 3;
Fig. 5 is another connected mode of insulation board and top conductor and bottom conductor among Fig. 3;
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
As seen from Figure 3: the present invention includes: top conductor 1, insulation board 2, a N*M electric capacity 4 are the capable arrangement of N row M, and N, M are positive integers; Also comprise N bottom conductor 3; Insulation board 2 is between top conductor 1 and bottom conductor 3; One end of described top conductor 1 be a recessed ledge frame face 101 and join with the positive terminal 5 of first column capacitance 4, the other end is external; The recessed ledge frame face 301 of the negative terminal 6 of first electric capacity 4 and first bottom conductor 3 one end joins, and the recessed ledge frame face 302 of first bottom conductor 3 other end joins with the positive terminal of secondary series electric capacity 4; One end and N column capacitance 4 negative terminals of N bottom conductor 3 join, and the other end is external;
Described N is 3;
Described insulation board 2 between top conductor 1 and bottom conductor 3 is: insulation board 2 sticks with glue the lower surface that agent sticks on top conductor 1, and the upper surface of being close to bottom conductor 3 is laid;
By Fig. 3, Fig. 4 as seen: described insulation board 2 between top conductor 1 and bottom conductor 3 is: four fixed terminals 8 are stretched out in the top conductor both sides, be connected with electric capacity box cover 7, insulation board 2 is pressed in the middle of two conductors, insulation board 2 in horizontal all directions respectively by the vertical plane of top conductor fixed terminal, the vertical plane of bottom conductor outside terminal, and the top conductor bending side fixes;
By Fig. 3, Fig. 5 as seen: above top conductor 1, lay an external insulation plate 9 again, external insulation plate 9 is identical with insulation board 2 shape sizes between top conductor 1 and bottom conductor 3, fixing in both sides with plastic bolt 10, this insulation board 2 between top conductor 1 and bottom conductor 3 fits tightly with top conductor 1 and in the horizontal direction by the double-screw bolt face, the vertical plane of the external connection terminals of bottom conductor and positive plate bending side are fixed.
The present invention will need the position of set bolt to bend downwards, reserve the space of bolt, need not at top conductor and insulating layer perforating, so the design of bus processing be more convenient, not need strict assembly precision, can save manufacturing cost; The structure that need not perforate has simultaneously increased the conductor area, has just increased bus capacitor, and most of area of two-plate is close together by insulating barrier, makes that stray inductance is as far as possible little, has improved the reliability of whole power model.
Top conductor obtains strip step surface twice in the one side along the straight line bending up among the present invention, and this step surface is close to capacitor terminal, and is opening aperture with the positive terminal opposite position, is used for bolt and connects the capacitance cathode terminal.Opposite side at copper coin is furnished with external connection terminals.
Bottom conductor below, equally in the bending of needs and electric capacity junction, form and be close to the step surface of electric capacity splicing ear, and on step surface, open aperture, copper coin not dogleg section by interior insulation board and top conductor applying.Arranging external connection terminals with the top conductor relevant position.
Interior insulation board is close to lower conductor between last lower conductor, the insulation board edge is a bit larger tham the copper coin edge, to guarantee enough creepage distances, does not have perforate on the plate.
Claims (5)
1. the fixed connection structure of a frequency changer direct current bus, comprising: top conductor (1), insulation board (2), a N*M electric capacity (4) are the capable arrangement of N row M (4), and N, M are positive integers; It is characterized in that: also comprise N bottom conductor (3); Insulation board (2) is between top conductor (1) and bottom conductor (3); One end of described top conductor (1) be a recessed ledge frame face (101) and join with the positive terminal (5) of first column capacitance (4), the other end is external; The negative terminal (6) of first column capacitance (4) joins with the recessed ledge frame face (301) of first bottom conductor (3) one end, and the recessed ledge frame face (302) of first bottom conductor (3) other end joins with the positive terminal of secondary series electric capacity (4); One end of N bottom conductor (3) and N column capacitance (4) negative terminal join, and the other end is external.
2. the fixed connection structure of frequency changer direct current bus according to claim 1, it is characterized in that: described N is 3.
3. the fixed connection structure of frequency changer direct current bus according to claim 1 and 2, it is characterized in that: described insulation board (2) between top conductor (1) and bottom conductor (3) is: insulation board (2) sticks with glue the lower surface that agent sticks on top conductor (1), and the upper surface of being close to bottom conductor (3) is laid.
4. the fixed connection structure of frequency changer direct current bus according to claim 1 and 2, it is characterized in that: described insulation board (2) between top conductor (1) and bottom conductor (3) is: four fixed terminals (8) are stretched out in the top conductor both sides, be connected with electric capacity box cover (7), insulation board (2) is pressed in the middle of two conductors, insulation board (2) in horizontal all directions respectively by the vertical plane of top conductor fixed terminal, the vertical plane of bottom conductor outside terminal, and the top conductor bending side fixes.
5. the fixed connection structure of frequency changer direct current bus according to claim 1 and 2, it is characterized in that: lay an external insulation plate (9) again in the top of top conductor (1), external insulation plate (9) is identical with insulation board (2) shape size between top conductor (1) and bottom conductor (3), fixing in both sides with plastic bolt (10), this insulation board (2) between top conductor (1) and bottom conductor (3) fits tightly with top conductor (1) and in the horizontal direction by the double-screw bolt face, the vertical plane of the external connection terminals of bottom conductor and positive plate bending side are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100480403A CN100570963C (en) | 2007-11-09 | 2007-11-09 | The fixed connection structure of frequency changer direct current bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100480403A CN100570963C (en) | 2007-11-09 | 2007-11-09 | The fixed connection structure of frequency changer direct current bus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101202399A CN101202399A (en) | 2008-06-18 |
| CN100570963C true CN100570963C (en) | 2009-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100480403A Active CN100570963C (en) | 2007-11-09 | 2007-11-09 | The fixed connection structure of frequency changer direct current bus |
Country Status (1)
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| CN (1) | CN100570963C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324836B (en) * | 2011-09-16 | 2014-05-07 | 华南理工大学 | Output filtering circuit of high-power low-voltage large-current high-frequency switch power supply device |
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- 2007-11-09 CN CNB2007100480403A patent/CN100570963C/en active Active
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| Publication number | Publication date |
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| CN101202399A (en) | 2008-06-18 |
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| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI NEW ERA ELECTRIC CO., LTD. Free format text: FORMER OWNER: SHANGHAI XINSHIDA ELECTRICAL CO., LTD. Effective date: 20081114 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20081114 Address after: Code 289, Xin Qin Road, Shanghai, Jiading District: 201802 Applicant after: Shanghai STEP Electric Corporation Address before: Code 289, Xin Qin Road, Shanghai, Jiading District: 201802 Applicant before: Shanghai Xinshida Electrical Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
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