CN103247984A - DC (Direct-Current) common-mode busbar integrated with EMI (Electromagnetic Interference) filtering function - Google Patents
DC (Direct-Current) common-mode busbar integrated with EMI (Electromagnetic Interference) filtering function Download PDFInfo
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- CN103247984A CN103247984A CN2013102120041A CN201310212004A CN103247984A CN 103247984 A CN103247984 A CN 103247984A CN 2013102120041 A CN2013102120041 A CN 2013102120041A CN 201310212004 A CN201310212004 A CN 201310212004A CN 103247984 A CN103247984 A CN 103247984A
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Abstract
The invention relates to a DC (Direct-Current) common-mode busbar integrated with an EMI (Electromagnetic Interference) filtering function. The DC common-mode busbar comprises a positive plate, a negative plate, a winding busbar and a capacitance busbar, wherein the winding busbar and the capacitance busbar are formed by overlapping insulating plates positioned between the positive plate and the negative plate. The DC common-mode busbar is characterized in that the positive plate and the negative plate of the winding busbar are fixedly connected with the anode and cathode of the capacitance busbar respectively; and the end part of the winding busbar passes through a magnetic ring twice in sequence. The DC common-mode busbar has the advantages that the EMI filtering function is integrated while electric energy is transmitted and parasitic inductance is lowered, a filtering effect is achieved, meanwhile, the cost is lowered, and the size is reduced.
Description
Technical field
The present invention relates to the structural design of filtering method and the DC common mode busbar of a kind of electric device EMI, belong to the electric device technical field.
Background technology
Original stack bus bar plays electric energy transmitting and the function that reduces system's stray inductance usually only as a kind of electrical connection arrangement in system, do not have the EMI filter function.Along with domestic and international standard is more and more perfect to frequency converter EMI requirement, frequency converter interchange side or DC side increase electromagnetic interface filter spare are become a kind of trend, this trend is all the more so in the new forms of energy industry.Common powerful photovoltaic or wind-powered electricity generation inverter, the interchange side can add one respectively with DC side and exchange electromagnetic interface filter and direct current electromagnetic interface filter, and to isolate high-frequency noise to the interference of electrical network or other equipment, it has following shortcoming:
The first, increase by one and exchange electromagnetic interface filter and a direct current electromagnetic interface filter, increased cost;
The second, volume is big, takes up room;
Three, independently electromagnetic interface filter is influenced by volume, and filtering performance is difficult to do very highly.
Summary of the invention
Thereby the technical problem to be solved in the present invention is to make traditional stack bus bar have the EMI filter function to reduce equipment cost and volume.
In order to solve the problems of the technologies described above, technical scheme of the present invention has provided a kind of DC common mode busbar of integrated EMI filter function, comprise by positive plate, negative plate and the stacked winding busbar that forms of insulation board and electric capacity busbar between positive plate and negative plate, it is characterized in that: the positive plate of winding busbar and negative plate are fixedlyed connected with positive pole and the negative pole of electric capacity busbar respectively, and the end of winding busbar is passed magnet ring and once passed magnet ring again by bending.
Preferably, also comprising reinforcement, fixedlys connected with described electric capacity busbar and described winding busbar respectively in the two ends of reinforcement.
Preferably, the positive plate of described winding busbar and negative plate are bonding with described insulation board edge sealing respectively.
Preferably, described insulation board adopts flexible insulating material to make.
Structure provided by the invention is passed magnet ring twice with the positive/negative plate of winding busbar on the basis that does not change the busbar performance, constitute filter inductance.Here the winding busbar is passed magnet ring twice, its filtering performance has been reached use 4 times of due filter effects of magnet ring quantity, and leakage current is approaching zero, overall performance is better than traditional E MI filter, effectively reduces volume simultaneously, reduces cost.
In sum, advantage of the present invention is: at electric energy transmitting with when reducing stray inductance, the integrated EMI filter function had both reached filter effect, reduced cost again simultaneously, reduced volume.
Description of drawings
Fig. 1 is the structural representation of the DC common mode busbar of a kind of integrated EMI filter function provided by the invention.
Embodiment
For the present invention is become apparent, now with preferred embodiment, and conjunction with figs. is described in detail below.
As shown in Figure 1, the DC common mode busbar of a kind of integrated EMI filter function provided by the invention comprises by positive plate, negative plate and the stacked winding busbar 1 that forms of insulation board and electric capacity busbar 2 between positive plate and negative plate.
The insulation board of winding busbar 1 adopts flexible insulating material to make, and guarantees dielectric strength and lower stray inductance, and its positive plate and negative plate are bonding with the insulation board edge sealing respectively, guarantees reliability of products.
The positive plate of winding busbar 1 and negative plate are fixedlyed connected with positive pole and the negative pole of electric capacity busbar 2 respectively, and magnet ring 3 is passed again through four bendings after passing magnet ring 3 in the end of winding busbar 1, make the conductor pole plate have altogether and pass magnet ring 3 four times.Fixedly connected with described electric capacity busbar 2 and described winding busbar 1 respectively in the two ends of reinforcement 4.
The data of the DC common mode busbar of a kind of integrated EMI filter function provided by the invention and traditional stack bus bar are to such as shown in table 1 and the table 2.
Table 1: filter effect relatively
Table 2: volume ratio
Therefore, the present invention is integrated EMI filter function can obtain more excellent EMI filter effect, effectively reduces cost simultaneously, reduces volume.
Claims (4)
1. the DC common mode busbar of an integrated EMI filter function, comprise by positive plate, negative plate and the stacked winding busbar (1) that forms of insulation board and electric capacity busbar (2) between positive plate and negative plate, it is characterized in that: the positive plate of winding busbar (1) and negative plate are fixedlyed connected with positive pole and the negative pole of electric capacity busbar (2) respectively, and the end of winding busbar (1) is passed magnet ring (3) and once passed magnet ring (3) again by bending.
2. the DC common mode busbar of a kind of integrated EMI filter function as claimed in claim 1 is characterized in that; Also comprising reinforcement (4), fixedlys connected with described electric capacity busbar (2) and described winding busbar (1) respectively in the two ends of reinforcement (4).
3. the DC common mode busbar of a kind of integrated EMI filter function as claimed in claim 1, it is characterized in that: the positive plate of described winding busbar (1) and negative plate are bonding with described insulation board edge sealing respectively.
4. the DC common mode busbar of a kind of integrated EMI filter function as claimed in claim 1 is characterized in that: described insulation board adopts flexible insulating material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102120041A CN103247984A (en) | 2013-05-31 | 2013-05-31 | DC (Direct-Current) common-mode busbar integrated with EMI (Electromagnetic Interference) filtering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102120041A CN103247984A (en) | 2013-05-31 | 2013-05-31 | DC (Direct-Current) common-mode busbar integrated with EMI (Electromagnetic Interference) filtering function |
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| Publication Number | Publication Date |
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| CN103247984A true CN103247984A (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102120041A Pending CN103247984A (en) | 2013-05-31 | 2013-05-31 | DC (Direct-Current) common-mode busbar integrated with EMI (Electromagnetic Interference) filtering function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467363A (en) * | 2014-12-10 | 2015-03-25 | 天水电气传动研究所有限责任公司 | High-power supply power converter |
| CN105450042A (en) * | 2014-09-26 | 2016-03-30 | 台达电子工业股份有限公司 | Three-level power converter and power unit thereof |
| EP3349344A3 (en) * | 2017-01-10 | 2018-08-01 | InTiCA Systems AG | Filter assembly |
| CN108832868A (en) * | 2018-08-29 | 2018-11-16 | 北斗航天汽车（北京）有限公司 | Electric machine controller integrates busbar and busbar assembly method |
| CN112187038A (en) * | 2020-10-26 | 2021-01-05 | 无锡中汇汽车电子科技有限公司 | Integrated EMI filter for electric vehicle motor controller |
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| WO1996028002A1 (en) * | 1995-03-06 | 1996-09-12 | Siemens Nixdorf Informationssysteme Ag | Bus bars with filter condensers |
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| US20080202899A1 (en) * | 2003-09-30 | 2008-08-28 | Rockwell Automation Technologies, Inc. | Power electronic switching device with laminated bus |
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| CN201877144U (en) * | 2010-10-25 | 2011-06-22 | 上海鹰峰电子科技有限公司 | Insulating wrapped laminated bus structure |
| CN202197209U (en) * | 2011-08-24 | 2012-04-18 | 三一电气有限责任公司 | Laminated busbar structure of frequency converter |
| CN203289335U (en) * | 2013-05-31 | 2013-11-13 | 上海鹰峰电子科技有限公司 | DC common-mode busbar integrating EMI filtering function |
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| WO1996028002A1 (en) * | 1995-03-06 | 1996-09-12 | Siemens Nixdorf Informationssysteme Ag | Bus bars with filter condensers |
| US20080202899A1 (en) * | 2003-09-30 | 2008-08-28 | Rockwell Automation Technologies, Inc. | Power electronic switching device with laminated bus |
| CN1993782A (en) * | 2004-08-12 | 2007-07-04 | 爱普科斯公司 | Inductive component for high currents and method for the production thereof |
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| CN201877144U (en) * | 2010-10-25 | 2011-06-22 | 上海鹰峰电子科技有限公司 | Insulating wrapped laminated bus structure |
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| CN203289335U (en) * | 2013-05-31 | 2013-11-13 | 上海鹰峰电子科技有限公司 | DC common-mode busbar integrating EMI filtering function |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450042A (en) * | 2014-09-26 | 2016-03-30 | 台达电子工业股份有限公司 | Three-level power converter and power unit thereof |
| CN105450042B (en) * | 2014-09-26 | 2018-04-17 | 台达电子工业股份有限公司 | Three level power converter and its power cell |
| CN104467363A (en) * | 2014-12-10 | 2015-03-25 | 天水电气传动研究所有限责任公司 | High-power supply power converter |
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| EP3349344A3 (en) * | 2017-01-10 | 2018-08-01 | InTiCA Systems AG | Filter assembly |
| US10404040B2 (en) | 2017-01-10 | 2019-09-03 | Intica Systems Ag | Filter arrangement |
| CN108832868A (en) * | 2018-08-29 | 2018-11-16 | 北斗航天汽车（北京）有限公司 | Electric machine controller integrates busbar and busbar assembly method |
| CN112187038A (en) * | 2020-10-26 | 2021-01-05 | 无锡中汇汽车电子科技有限公司 | Integrated EMI filter for electric vehicle motor controller |
| CN112187038B (en) * | 2020-10-26 | 2024-06-04 | 无锡中汇汽车电子科技有限公司 | Integrated EMI filter for electric automobile motor controller |
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Application publication date: 20130814 |