CN202455065U - Direct current filter adopting busbar conductor - Google Patents
Direct current filter adopting busbar conductor Download PDFInfo
- Publication number
- CN202455065U CN202455065U CN2012200295150U CN201220029515U CN202455065U CN 202455065 U CN202455065 U CN 202455065U CN 2012200295150 U CN2012200295150 U CN 2012200295150U CN 201220029515 U CN201220029515 U CN 201220029515U CN 202455065 U CN202455065 U CN 202455065U
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- filter
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Abstract
The utility model discloses a direct current filter adopting a busbar conductor. The direct current filter comprises an output load side and an input side. A common mode choke L is connected between the output load side and the input side in series, a capacitor CX1 is connected between a positive pole end and a negative pole end of the output load side in crossing mode, a capacitor CY1 is connected between the positive pole end and a ground wire end in crossing mode, and a capacitor CY1 is connected between the negative pole end and the ground wire end in crossing mode. The common mode choke L, the capacitor CX1 and the capacitors CY1 form a combined pi-type differential mode filtering circuit and an r-type common mode filtering circuit. By adopting the pi-type differential mode filtering circuit and the r-type common mode filtering circuit, electromagnetic interference noise caused by grid-combination of an inverter is effective reduced, heating saturation of a magnetic material is avoided, and performance and safety of the filter under large current are guaranteed.
Description
Technical field
The utility model relates to a kind of filter, relates in particular to a kind of DC filter that adopts the busbar conductor.
Background technology
Along with the non-linear equipment that is the basis with the modern power electronic device uses in a large number, Switching Power Supply for example, frequency converters etc. inject a large amount of radio-frequency components to electrical network, pollute electrical network, disturb the neighbouring device operate as normal.Especially for solar energy in the present new forms of energy, the current transformer that wind energy is used, and network process in, if do not handle the EMI problem, then have a large amount of radio-frequency components and cause equipment fault, the damage problem.
Frequency signal access arrangement when the low-pass filter circuit that electromagnetic interface filter is made up of series reactor and shunt capacitor usually, its effect are permission equipment operate as normal, and the interference signal of high frequency is had bigger inhibition.Had a large amount of filters using in the market, but be mainly single-phase, little electric current (tens peaces) filter.
At present at wind power generation, track traffic, charging pile; And high-power industrial drives field, often adopt busbar conductor (BUSBAR) as the main supporting body of electric current, have very high current carrying capacity like this; The higher voltage grade has higher requirement to filtering harassing and wrecking and antijamming capability, and existing filter can not satisfy photovoltaic well; Wind power generation, track traffic, charging pile; And the filtering demand in high-power industrial drives field, therefore, be necessary existing DC filter is improved.
The utility model content
The utility model technical problem to be solved provides a kind of DC filter that adopts the busbar conductor, and the electromagnetic interference noise in the time of can effectively reducing inverter and be incorporated into the power networks avoids the magnetic material heating saturated, guarantees the performance and the safety of filter under the big electric current.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to provide a kind of DC filter that adopts the busbar conductor; Comprise load outlet side and direct current input side; Wherein, Be in series with inductance L 1 between the positive terminal of said load outlet side and direct current input side, be in series with inductance L 2 between the negative pole end; Cross-over connection has capacitor C X1, resistance R 2 between the positive terminal of said load outlet side and the negative pole end, and cross-over connection has capacitor C Y1, resistance R 3 between positive terminal and the ground terminal, and cross-over connection has capacitor C Y2, resistance R 4 between negative pole end and the ground terminal; Cross-over connection has capacitor C X2, resistance R 1 between said direct current input side positive terminal and the negative pole end; Said capacitor C X2, capacitor C X1, resistance R 1, resistance R 2 and the parasitic differential mode inductance that is produced by inductance L 1, inductance L 2 constitute PI type differential mode filter circuit jointly; Reflection also absorbs the interference noise that pollutant sources produce; Said capacitor C Y1, capacitor C Y2, resistance R 3, resistance R 2 and the common mode inductance that is produced by inductance L 1, inductance L 2 constitute г type common mode filtering circuit, the high-frequency electronic noise that reflection-absorption or bypass pollutant sources produce.
The DC filter of above-mentioned employing busbar conductor, wherein, the core material of said inductance L 1, inductance L 2 is ferrite, ferrocart core or micro crystal material.
The DC filter of above-mentioned employing busbar conductor, wherein, said busbar conductor is the red copper busbar.
The utility model contrast prior art has following beneficial effect: the DC filter of the employing busbar conductor that the utility model provides; Adopt composite type PI type differential mode filter circuit and г type common mode filtering circuit; Electromagnetic interference noise when effectively the minimizing inverter is incorporated into the power networks; Avoid the magnetic material heating saturated, thereby guarantee the performance and the safety of filter under the big electric current.
Description of drawings
Fig. 1 adopts the DC filter circuit diagram of busbar conductor for the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.
Fig. 1 adopts the DC filter circuit diagram of busbar conductor for the utility model.
See also Fig. 1, the DC filter of the employing busbar conductor that the utility model provides comprises load outlet side and direct current input side, wherein, the positive terminal of said load outlet side and direct current input side+between be in series with inductance L 1, negative pole end-between be in series with inductance L 2; The positive terminal of said load outlet side+and negative pole end-between cross-over connection capacitor C X1, resistance R 2 are arranged, positive terminal+and ground terminal PE between cross-over connection capacitor C Y1, resistance R 3 are arranged, negative pole end-and ground terminal PE between cross-over connection capacitor C Y2, resistance R 4 are arranged; Said direct current input side positive terminal+and negative pole end-between cross-over connection capacitor C X2, resistance R 1 are arranged; Said capacitor C X2, capacitor C X1, resistance R 1, resistance R 2 and the parasitic differential mode inductance that is produced by inductance L 1, inductance L 2 constitute PI type differential mode filter circuit jointly; Reflection also absorbs the interference noise that pollutant sources produce; Said capacitor C Y1, capacitor C Y2, resistance R 3, resistance R 2 and the common mode inductance that is produced by inductance L 1, inductance L 2 constitute г type common mode filtering circuit; The high-frequency electronic noise that reflection-absorption or bypass pollutant sources produce, protection electricity consumption electromagnetic environment.
The DC filter of the employing busbar conductor that the utility model provides; Signal flow is to as follows: INPUT is the direct current input; OUTPUT is a direct current output loading end; The electromagnetic interference noise that photovoltaic DC-to-AC converter sends is transmitted to the filter load end through lead, and CY1 is over the ground arranged earlier, and preliminary filtering common mode of the CX1 electric capacity between the both positive and negative polarity and DM EMI signal; The inductance L of flowing through then 1 launch with L2 and the absorbing high-frequency electromagnetic noise after get into CX2 and do further Filtering Processing, above filtering point formation PI type differential mode filtering and г type common mode filtering.Thereby the electromagnetic interference that the inverter dc terminal is produced effectively weakens, and reduces with peripheral electromagnetic environment and pollutes, the protection photovoltaic battery panel.
The DC filter of the employing busbar conductor that the utility model provides adopts busbar to come bearing great current, filter power consumption, and it is very little to generate heat, and overload capacity is strong.Adopt the overhang insulation working of plastics of high insulativity also to guarantee enough insulation distances and dielectric strength simultaneously, common mode inductance is selected the good magnetic material of magnetic permeability, avoids the saturated heating of magnetic material.Existing filter all is to adopt enamelled wire coiling inductance, and is therefore just powerless for big electric current; The utility model preferably adopts the red copper busbar to cooperate suitable magnetic material; Like ferrite, ferrocart core or better micro crystal material etc.; Thereby play and can satisfy filtering and be unlikely to take place saturated phenomenon again, satisfy the demand of high-voltage great-current, direct current is up to 2300A/1200V.
In sum; The DC filter of the employing busbar conductor that the utility model provides adopts composite type PI type differential mode filtering and г type common mode filtering, the electromagnetic interference noise when effectively reducing inverter and being incorporated into the power networks; Avoid the magnetic material heating saturated, thereby guarantee the performance and the safety of filter under the big electric current.
Though the utility model discloses as above with preferred embodiment; Right its is not in order to limit the utility model; Any those skilled in the art; In spirit that does not break away from the utility model and scope, when can doing a little modification and perfect, so the protection range of the utility model is when being as the criterion with what claims defined.
Claims (3)
1. a DC filter that adopts the busbar conductor comprises load outlet side and direct current input side, it is characterized in that, is in series with inductance L 1 between the positive terminal of said load outlet side and direct current input side, is in series with inductance L 2 between the negative pole end; Cross-over connection has capacitor C X1, resistance R 2 between the positive terminal of said load outlet side and the negative pole end, and cross-over connection has capacitor C Y1, resistance R 3 between positive terminal and the ground terminal, and cross-over connection has capacitor C Y2, resistance R 4 between negative pole end and the ground terminal; Cross-over connection has capacitor C X2, resistance R 1 between said direct current input side positive terminal and the negative pole end; Said capacitor C X2, capacitor C X1, resistance R 1, resistance R 2 and the parasitic differential mode inductance that is produced by inductance L 1, inductance L 2 constitute PI type differential mode filter circuit jointly; Reflection also absorbs the interference noise that pollutant sources produce; Said capacitor C Y1, capacitor C Y2, resistance R 3, resistance R 2 and the common mode inductance that is produced by inductance L 1, inductance L 2 constitute г type common mode filtering circuit, the high-frequency electronic noise that reflection-absorption or bypass pollutant sources produce.
2. the DC filter of employing busbar conductor as claimed in claim 1 is characterized in that, the core material of said inductance L 1, inductance L 2 is ferrite, ferrocart core or micro crystal material.
3. according to claim 1 or claim 2 the DC filter of employing busbar conductor is characterized in that said busbar conductor is the red copper busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200295150U CN202455065U (en) | 2012-01-30 | 2012-01-30 | Direct current filter adopting busbar conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200295150U CN202455065U (en) | 2012-01-30 | 2012-01-30 | Direct current filter adopting busbar conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202455065U true CN202455065U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200295150U Expired - Fee Related CN202455065U (en) | 2012-01-30 | 2012-01-30 | Direct current filter adopting busbar conductor |
Country Status (1)
| Country | Link |
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| CN (1) | CN202455065U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594119A (en) * | 2012-01-30 | 2012-07-18 | 苏州腾冉电气设备有限公司 | Direct-current filter adopting busbar conductor |
-
2012
- 2012-01-30 CN CN2012200295150U patent/CN202455065U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594119A (en) * | 2012-01-30 | 2012-07-18 | 苏州腾冉电气设备有限公司 | Direct-current filter adopting busbar conductor |
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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: 20120926 Termination date: 20150130 |
|
| EXPY | Termination of patent right or utility model |