CN110350532A - Three-phase four-wire power filter - Google Patents
Three-phase four-wire power filter Download PDFInfo
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- CN110350532A CN110350532A CN201910598002.8A CN201910598002A CN110350532A CN 110350532 A CN110350532 A CN 110350532A CN 201910598002 A CN201910598002 A CN 201910598002A CN 110350532 A CN110350532 A CN 110350532A
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- 239000003990 capacitor Substances 0.000 claims abstract description 125
- 230000005611 electricity Effects 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 6
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 10
- 230000037431 insertion Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
- H01F17/062—Toroidal core with turns of coil around it
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F2017/0093—Common mode choke coil
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
- H01F2017/065—Core mounted around conductor to absorb noise, e.g. EMI filter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The present invention provides a kind of three-phase four-wire power filters, including phase line, three-phase power input end and three-phase current output end；It further include shell, low frequency common inductance, high frequency common mode inductance, first differential mode capacitor component, second differential mode capacitor component, first common mode capacitance component and the second common mode capacitance component, low frequency common inductance and high frequency common mode inductance are series at respectively between three-phase power input end and three-phase current output end, first differential mode capacitor component is set between three-phase power input end and low frequency common inductance, second differential mode capacitor component is set between low frequency common inductance and high frequency common mode inductance, first common mode capacitance component is set between low frequency common inductance and high frequency common mode inductance, second common mode capacitance component is set between high frequency common mode inductance and three-phase current output end.Three-phase four-wire power filter provided by the invention can sufficiently inhibit the electromagnetic interference of route, it can be achieved that high insertion loss in wide frequency range.
Description
Technical field
The invention belongs to wave filter technology fields, are to be related to a kind of three-phase four-wire power filter more specifically.
Background technique
With the rapid development of electronic technology and microelectronic circuit, each class of electronic devices forms complicated electromagnetic environment,
The problem of so as to cause user to Electromagnetic Compatibility, attention degree also continued to increase, and then a large amount of in complete machine, system
Using power supply EMI (Electromagnetic Interference, electromagnetic interference) filter, and EMI power filter signal
Frequency spectrum it is very wide.
Current EMI power filter generallys use single stage filtering circuit, since the inductor material used has many rule
Lattice, the filtering frequency range that different magnetic materials are directed to is different, therefore current EMI power filter cannot achieve in wideband model
Interior high insertion loss is enclosed, military equipment requirement is unable to satisfy.
Summary of the invention
The purpose of the present invention is to provide a kind of three-phase four-wire power filter, with solve it is existing in the prior art can not
The technical issues of realizing the high insertion loss in wide frequency range.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of three-phase four-wire power filter is provided, including
Phase line, the three-phase power input end and three-phase current output end for being connected to the phase line both ends；It is characterized by: also wrapping
Include shell, low frequency common inductance, high frequency common mode inductance, the first differential mode capacitor component, the second differential mode capacitor component, the first common mode electricity
Hold component and the second common mode capacitance component, the low frequency common inductance, the high frequency common mode inductance, first differential mode capacitor
Component, the second differential mode capacitor component, the first common mode capacitance component and the second common mode capacitance component are set respectively
It is placed in the shell, the low frequency common inductance and the high frequency common mode inductance are series at the three-phase power input end respectively
Between the three-phase current output end, the first differential mode capacitor component be set to the three-phase power input end with it is described low
Between frequency common mode inductance, the second differential mode capacitor component be set to the low frequency common inductance and the high frequency common mode inductance it
Between, the first common mode capacitance component is set between the low frequency common inductance and the high frequency common mode inductance, and described second
Common mode capacitance component is set between the high frequency common mode inductance and the three-phase current output end.
Further, the three-phase four-wire power filter further includes middle line, is connected in the middle line both ends
Line input terminal and middle line output terminal, the phase line include the first phase line, the second phase line and third phase line, the three phase mains
Input terminal includes first phase input terminal, second phase input terminal and third phase input terminal, the three-phase current output end
Including first phase output end, second phase output end and third phase output end, the first phase input terminal with it is described
First phase output end is connected to the both ends of first phase line, and the second phase input terminal and the second phase are defeated
Outlet is connected to the both ends of second phase line, and the third phase input terminal connects respectively with the third phase output end
It connects at the both ends of the third phase line；
The low frequency common inductance include low frequency magnet ring, apart windings on the low frequency magnet ring the first inductance coil,
Second inductance coil, third inductance coil and the 4th inductance coil, first inductance coil are connected to the first phase
Between input terminal and the first phase output end, second inductance coil connection and the second phase input terminal with it is described
Between second phase output end, the third inductance coil is connected to the third phase input terminal and the third phase exports
Between end, the 4th inductance coil is connected between the middle line input terminal and the middle line output terminal；
The high frequency common mode inductance include high-frequency magnetic, apart windings in the high-frequency magnetic the 5th inductance coil,
6th inductance coil, the 7th inductance coil and the 8th inductance coil, the 4th inductance coil are connected to the first phase
Between input terminal and the first phase output end, the 5th inductance coil connection and the second phase input terminal with it is described
Between second phase output end, the 6th inductance coil is connected to the third phase input terminal and the third phase exports
Between end, the 7th inductance coil is connected between the middle line input terminal and the middle line output terminal.
Further, the low frequency magnet ring is amorphous magnet ring, and the high-frequency magnetic is manganese-zinc ferrite magnet ring.
Further, it is provided with cross partition in the low frequency magnet ring and/or the high-frequency magnetic,
The cross partition in the low frequency magnet ring be used for by first inductance coil, second inductance coil,
It is isolated from each other between the third inductance coil and the 4th inductance coil；
The cross partition in the high-frequency magnetic be used for by the 5th inductance coil, the 6th inductance coil,
It is isolated from each other between 7th inductance coil and the 8th inductance coil.
Further, the first differential mode capacitor component includes first capacitor, the second capacitor and third capacitor, and described
One capacitance connection between first phase line and the middle line, second capacitance connection second phase line and it is described in
Between line, the third capacitance connection is between the third phase line and the middle line.
Further, the first differential mode capacitor component further includes first resistor, second resistance and 3rd resistor, described
First resistor is connected in the both ends of the first capacitor in parallel, and the second resistance is connected in the two of second capacitor in parallel
End, the 3rd resistor are connected in the both ends of the 3rd resistor in parallel.
Further, the second differential mode capacitor component includes the 4th capacitor, the 5th capacitor and the 6th capacitor, and described the
Four capacitance connections between first phase line and the middle line, the 5th capacitance connection second phase line and it is described in
Between line, the 6th capacitance connection is between the third phase line and the middle line.
Further, the three-phase four-wire power filter further includes ground wire, and the first common mode capacitance component includes the
Seven capacitors, the 9th capacitor of the 8th capacitor and the tenth capacitor, the 7th capacitance connection is in first phase line and the ground wire
Between, the 8th capacitance connection is between second phase line and the ground wire, and the 9th capacitance connection is in the third
Between phase line and the ground wire, the tenth capacitance connection is between the middle line and the ground wire.
Further, the second common mode capacitance component include the 11st capacitor, the 13rd capacitor of the 12nd capacitor and
14th capacitor, the 11st capacitance connection is between first phase line and the ground wire, the 12nd capacitance connection
Between second phase line and the ground wire, the 13rd capacitance connection between the third phase line and the ground wire,
14th capacitance connection is between the middle line and the ground wire.
Further, heat conductive silica gel is filled in the shell.
The beneficial effect of three-phase four-wire power filter provided by the invention is: compared with prior art, the present invention three
Four line power-supply filter of phase, by the way that the low frequency common inductance of different frequency characteristic and high frequency common mode inductance are series at three-phase respectively
Between power input and three-phase current output end, forms twin-stage and filters the high insertion loss, it can be achieved that in wide frequency range,
The requirement of military equipment can be met, and by the way that the first differential mode capacitor component is set to three-phase power input end and low frequency common electricity
Between sense, the second differential mode capacitor component is set between low frequency common inductance and high frequency common mode inductance, the first common mode capacitance component
It is set between low frequency common inductance and high frequency common mode inductance, the second common mode capacitance component is set to high frequency common mode inductance and three-phase
Between current output terminal, so that low frequency common inductance, the first differential mode capacitor component and the second differential mode capacitor component form π
Type differential mode symmetric circuit structure, it is total that high frequency common mode inductance, the first common mode capacitance component and the second common mode capacitance component form π type
Mould symmetric circuit structure, so as to sufficiently inhibit to the electromagnetic interference of route.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the schematic diagram of internal structure of three-phase four-wire power filter provided in an embodiment of the present invention；
Fig. 2 is the low frequency common inductance or high frequency common mode electricity of three-phase four-wire power filter provided in an embodiment of the present invention
The structural schematic diagram of sense；
Fig. 3 is circuit diagram provided in an embodiment of the present invention；
Fig. 4 is provided in an embodiment of the present invention in the substandard Common Mode insertion loss test curve figure of 50 Ω of load impedance；
Fig. 5 is provided in an embodiment of the present invention in the substandard Differential Mode insertion loss test curve figure of 50 Ω of load impedance；
Fig. 6 is the wiring schematic diagram of the 5th circuit board provided in an embodiment of the present invention.
Wherein, each appended drawing reference in figure:
1- shell；3- three-phase power input end；4- three-phase current output end；51- the first differential mode capacitor component；511- first
Circuit board；52- the second differential mode capacitor component；521- second circuit board；61- the first common mode capacitance component；611- tertiary circuit plate；
62- the second common mode capacitance component；The 4th circuit board of 621-；7- low frequency common inductance；71- low frequency magnet ring；The first inductor wire of 72-
Circle；The second inductance coil of 73-；74- third inductance coil；The 4th inductance coil of 75-；8- high frequency common mode inductance；81- high frequency magnetic
Ring；The 5th inductance coil of 82-；The 6th inductance coil of 83-；The 7th inductance coil of 84-；The 8th inductance coil of 85-；The 5th circuit of 9-
Plate；91- enameled wire；92- insulating sleeve；10- cross partition.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
Also referring to Fig. 1 to Fig. 5, now three-phase four-wire power filter provided by the invention is illustrated.The present invention
Provide a kind of three-phase four-wire power filter, including phase line, be connected to phase line both ends three-phase power input end 3 and
Three-phase current output end 4.It further include shell 1, low frequency common inductance 7, high frequency common mode inductance 8, the first differential mode capacitor component 51,
Two differential mode capacitor components 52, the first common mode capacitance component 61 and the second common mode capacitance component 62.Wherein, low frequency common inductance 7,
High frequency common mode inductance 8, the first differential mode capacitor component 51, the second differential mode capacitor component 52, the first common mode capacitance component 61 and
Two common mode capacitance components 62 are respectively arranged in shell 1.Low frequency common inductance 7 and high frequency common mode inductance 8 are series at three-phase respectively
Between power input 3 and three-phase current output end 4, the first differential mode capacitor component 51 be set to three-phase power input end 3 with it is low
Between frequency common mode inductance 7, the second differential mode capacitor component 52 is set between low frequency common inductance 7 and high frequency common mode inductance 8.First
Common mode capacitance component 61 is set between low frequency common inductance 7 and high frequency common mode inductance 8.Second common mode capacitance component 62 is set to
Between high frequency common mode inductance 8 and three-phase current output end 4.
Wherein, the low frequency characteristic of low frequency common inductance 7 is good, and the high frequency characteristics of high frequency common mode inductance 8 is good, by by different frequencies
The low frequency common inductance 7 and high frequency common mode inductance 8 of rate characteristic are series at three-phase power input end 3 and three-phase current output end respectively
Between 4, forms twin-stage and filter the high insertion loss, it can be achieved that in wideband (0.3MHz~30MHz) range, can meet military
The requirement of equipment, and by by the first differential mode capacitor component 51 be set to three-phase power input end 3 and low frequency common inductance 7 it
Between, the second differential mode capacitor component 52 is set between low frequency common inductance 7 and high frequency common mode inductance 8, the first common mode capacitance component
61 are set between low frequency common inductance 7 and high frequency common mode inductance 8, and the second common mode capacitance component 62 is set to high frequency common mode inductance
Between 8 and three-phase current output end 4, so that low frequency common inductance 7, the first differential mode capacitor component 51 and the second differential mode electricity
Hold component 52 and forms π type differential mode symmetric circuit structure, high frequency common mode inductance 8, the first common mode capacitance component 61 and the second common mode
Capacitance component 62 forms π type common mode symmetric circuit structure, so as to sufficiently inhibit to the electromagnetic interference of route.
Three-phase four-wire power filter provided by the invention, compared with prior art, three-phase four-wire power filter of the invention
Wave device, by the way that the low frequency common inductance 7 of different frequency characteristic and high frequency common mode inductance 8 are series at three-phase power input end respectively
Between 3 and three-phase current output end 4, forms twin-stage and filter the high insertion loss, it can be achieved that in wide frequency range, army can be met
With the requirement of equipment, and by by the first differential mode capacitor component 51 be set to three-phase power input end 3 and low frequency common inductance 7 it
Between, the second differential mode capacitor component 52 is set between low frequency common inductance 7 and high frequency common mode inductance 8, the first common mode capacitance component
61 are set between low frequency common inductance 7 and high frequency common mode inductance 8, and the second common mode capacitance component 62 is set to high frequency common mode inductance
Between 8 and three-phase current output end 4, so that low frequency common inductance 7, the first differential mode capacitor component 51 and the second differential mode electricity
Hold component 52 and forms π type differential mode symmetric circuit structure, high frequency common mode inductance 8, the first common mode capacitance component 61 and the second common mode
Capacitance component 62 forms π type common mode symmetric circuit structure, so as to sufficiently inhibit to the electromagnetic interference of route.
Further, it please refers to Fig.1 to Fig.3, one kind as three-phase four-wire power filter provided by the invention is specific
Embodiment, three-phase four-wire power filter further include middle line N, the middle line input terminal for being connected to the both ends middle line N and in
Line output terminal.The phase line includes the first phase line, the second phase line and third phase line, and three-phase power input end 3 includes first phase
Input terminal L1, second phase input terminal L2 and third phase input terminal L3, three-phase current output end 4 are exported including first phase
Hold L1 ', second phase output end L2 ' and third phase output end L3 '.First phase input terminal L1 and first phase output end
L1 ' is connected to the both ends of the first phase line, and second phase input terminal L2 and second phase output end L2 ' are connected to second
The both ends of phase line, third phase input terminal L3 and third phase output end L3 ' are connected to the both ends of third phase line.The low frequency
Common mode inductance 7 includes low frequency magnet ring 71, apart windings in the first inductance coil 72, the second inductance coil on low frequency magnet ring 71
73, third inductance coil 74 and the 4th inductance coil 75.Specifically, in the present embodiment, first inductance coil 72 connection
Between first phase input terminal L1 and first phase output end L1 ', the connection of the second inductance coil 73 and second phase input terminal
Between L2 and second phase output end L2 ', third inductance coil 74 is connected to third phase input terminal L3 and third phase exports
It holds between L3 ', the 4th inductance coil 75 is connected between middle line input terminal and middle line output terminal.The high frequency common mode inductance 8 includes
High-frequency magnetic 81, apart windings are in the 5th inductance coil 82, the 6th inductance coil 83, the 7th inductance coil in high-frequency magnetic 81
84 and the 8th inductance coil 85.Specifically, in the present embodiment, the 4th inductance coil 75 is connected to first phase input terminal L1
Between first phase output end L1 ', the connection of the 5th inductance coil 82 and second phase input terminal L2 and second phase output end
Between L2 ', the 6th inductance coil 83 is connected between third phase input terminal L3 and third phase output end L3 ', the 7th inductance
Coil 84 is connected between middle line input terminal and middle line output terminal.By by the low frequency common inductance 7 of different frequency characteristic and high
Frequency common mode inductance 8 is series at respectively in each phase line, is formd twin-stage and is filtered the high insertion loss, it can be achieved that in wide frequency range,
The requirement of military equipment can be met.
Further, it please refers to Fig.1 to Fig.3, one kind as three-phase four-wire power filter provided by the invention is specific
Embodiment, low frequency magnet ring 71 be amorphous magnet ring, high-frequency magnetic 81 be manganese-zinc ferrite magnet ring, thus realize 0.3MHz~
High insertion loss within the scope of 30MHz, and electromagnetic interference can be effectively suppressed.
Further, referring to Fig. 2, a kind of specific embodiment party as three-phase four-wire power filter provided by the invention
Formula is provided with cross partition 10 in low frequency magnet ring 71, and the cross partition 10 in the low frequency magnet ring 71 is used for the first inductance coil
72, it is isolated from each other, is avoided between phase line between the second inductance coil 73, third inductance coil 74 and the 4th inductance coil 75
It interferes with each other, so that electromagnetic interference can be effectively suppressed.Cross partition 10 also can be set in the high-frequency magnetic 81, the high-frequency magnetic
Cross partition 10 in 81 is used for the 5th inductance coil 82, the 6th inductance coil 83, the 7th inductance coil 84 and the 8th electricity
It is isolated from each other between sense coil 85, avoids interfering with each other between phase line, further increase inhibition electromagnetic interference capability.It is preferred that
, cross partition 10 is made of insulating materials.
Further, referring to Fig. 2, a kind of specific embodiment party as three-phase four-wire power filter provided by the invention
Formula, first inductance coil 72, the second inductance coil 73, third inductance coil 74, the 4th inductance coil 75, the 5th inductance coil
82, the mode that Double-wire parallel wound can be used in the 6th inductance coil 83, the 7th inductance coil 84 and the 8th inductance coil 85 carry out around
Line, so as to reduce filter internal resistance.Since electric current is bigger, in order to meet electricity requirement, if using the side of single line coiling
Formula, needs to carry out coiling using thicker line, is not only easy drawing crack and is not easy to assemble, and the present invention is by using Double-wire parallel wound
Mode, the electricity excessively that can not only meet high current requires, and effectively reduces filter internal resistance, and assemble simple.
Further, it please refers to Fig.1 to Fig.3, one kind as three-phase four-wire power filter provided by the invention is specific
Embodiment, the first differential mode capacitor component 51 include first capacitor C1, the second capacitor C2 and third capacitor C3, first capacitor C1
It is connected between the first phase line and middle line N, the second capacitor C2 is connected between the second phase line and middle line N, the C3 connection of third capacitor
Between third phase line and middle line N.Preferably, the first differential mode capacitor component 51 further include first resistor R1, second resistance R2 with
And 3rd resistor R3, first resistor R1 are connected in the both ends of first capacitor C1 in parallel, second resistance R2 is connected in the second electricity in parallel
Hold the both ends of C2,3rd resistor R3 is connected in the both ends of 3rd resistor R3 in parallel.By first resistor R1, second resistance R2 and
3rd resistor R3 is arranged in parallel with first capacitor C1, the second capacitor C2 and third capacitor C3 respectively, can effectively prevent power supply
Power-line plug is long charged when line plug, more securely and reliably.
Further, it please refers to Fig.1 to Fig.3, one kind as three-phase four-wire power filter provided by the invention is specific
Embodiment, the second differential mode capacitor component 52 include the 4th capacitor C4, the 5th capacitor C5 and the 6th capacitor C6, the 4th capacitor C4
It is connected between the first phase line and middle line N, the 5th capacitor C5 is connected between the second phase line and middle line N, the 6th capacitor C6 connection
Between third phase line and middle line N.Pass through low frequency common inductance 7, the first differential mode capacitor component 51 and the second differential mode capacitor group
Part 52 forms π type differential mode symmetric circuit structure, so as to sufficiently inhibit to the electromagnetic interference of route.
Further, it please refers to Fig.1 to Fig.3, one kind as three-phase four-wire power filter provided by the invention is specific
Embodiment, three-phase four-wire power filter further include ground wire G, and the first common mode capacitance component 61 includes the 7th capacitor C7, the 8th
Capacitor C8, the 9th capacitor C9 and the tenth capacitor C10, the 7th capacitor C7 are connected between the first phase line and ground wire G, the 8th capacitor
C8 is connected between the second phase line and ground wire G, and the 9th capacitor C9 is connected between third phase line and ground wire G, and the tenth capacitor C10 connects
It connects between middle line and ground wire G.Second common mode capacitance component 62 includes the 11st capacitor C11, the 12nd capacitor C12, the 13rd
Capacitor C13 and the 14th capacitor C14, the 11st capacitor C11 are connected between the first phase line and ground wire G, the 12nd capacitor C12
It is connected between the second phase line and ground wire G, the 13rd capacitor C13 is connected between third phase line and ground wire G, the 14th capacitor
C14 is connected between middle line N and ground wire G.Pass through high frequency common mode inductance 8, the first common mode capacitance component 61 and the second common mode electricity
Hold component 62 and form π type common mode symmetric circuit structure, so as to sufficiently inhibit to the electromagnetic interference of route.
Further, it please refers to Fig.1 to Fig.3, one kind as three-phase four-wire power filter provided by the invention is specific
Embodiment, the first differential mode capacitor component 51 further include first circuit board 511, first capacitor C1, the second capacitor C2 third capacitor
C3, first resistor R1, second resistance R2 and 3rd resistor R3 are respectively arranged on first circuit board 511, the second differential mode capacitor component
52 further include second circuit board 521, and the 4th capacitor C4, the 5th capacitor C5 and the 6th capacitor C6 are set to second circuit board 521.The
One common mode capacitance component 61 further includes tertiary circuit plate 611, the 7th capacitor C7, the 9th capacitor C9 of the 8th capacitor C8 and the tenth electricity
Hold C10 and is respectively arranged on tertiary circuit plate 611.Second common mode capacitance component 62 further includes the 4th circuit board 621, the 11st capacitor
C11, the 12nd capacitor C12 the 13rd capacitor C13 and the 14th capacitor C14 are respectively arranged on the 4th circuit board 621.Three-phase and four-line
Power-supply filter further includes the 5th circuit board 9 in shell 11, and low frequency common inductance 7 is set respectively with high frequency common mode inductance 8
In on the 5th circuit board 9.Preferably, as shown in fig. 6, the 5th circuit board 9 that deposited copper and enameled wire 91 can be used is unidirectional and walk
Mode realizes the electric connection between each component on circuit board using deposited copper and enameled wire 91, so as to enhance master jointly
Circuit overload ability.Preferably, it is arranged with insulating sleeve 92 outside the enameled wire 91, thus the Space Coupling between reducing cabling.Into
One step, the first circuit board 511, second circuit board 521, tertiary circuit plate 611, the 4th circuit board 621 equally can be used deposited
Copper and enameled wire be unidirectional and the mode walked.
Further, a kind of specific embodiment as three-phase four-wire power filter provided by the invention, in shell 1
Filled with heat conductive silica gel (not shown), solidified by internal encapsulating, so that its calorific value is reduced, raising filter anti-vibration,
Impact resistance.Further, which also can be used flange (not shown) and carries out location and installation, to further increase
Filter anti-vibration, impact resistance, so that three-phase four-wire power filter of the invention can not only realize wide operating temperature model
The requirement enclosed, while enhancing the environmental adaptability requirement of filter, enhance the reliability of filter, reaches military requirements, simultaneously
Meet the test requirements document of GJB1518A and GJB360B.
Further, referring to Fig. 1, a kind of specific embodiment party as three-phase four-wire power filter provided by the invention
Formula, three-phase power input end 3 and three-phase current output end 4 can be used screw rod and carry out conductive mode, to realize external
The internal circuit of conducting wire and filter electrically conducts, and makes the electricity of three-phase power input end 3 and three-phase current output end 4
Transmit more stable, resistance to rush of current and anti-electromagnetic interference capability are stronger.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. three-phase four-wire power filter, including phase line, be connected to the phase line both ends three-phase power input end and
Three-phase current output end；It is characterized by also including shell, low frequency common inductance, high frequency common mode inductance, the first differential mode capacitor groups
Part, the second differential mode capacitor component, the first common mode capacitance component and the second common mode capacitance component, the low frequency common inductance, institute
State high frequency common mode inductance, the first differential mode capacitor component, the second differential mode capacitor component, the first common mode capacitance component
And the second common mode capacitance component is respectively arranged in the shell, the low frequency common inductance and high frequency common mode electricity
Sense is series at respectively between the three-phase power input end and the three-phase current output end, and the first differential mode capacitor component is set
It is placed between the three-phase power input end and the low frequency common inductance, the second differential mode capacitor component is set to described low
Between frequency common mode inductance and the high frequency common mode inductance, the first common mode capacitance component be set to the low frequency common inductance with
Between the high frequency common mode inductance, the second common mode capacitance component is set to the high frequency common mode inductance and the three-phase current
Between output end.
2. three-phase four-wire power filter as described in claim 1, it is characterised in that: the three-phase four-wire power filter is also
Including middle line, it is connected to the middle line input terminal and middle line output terminal at the middle line both ends, the phase line includes the first phase
Line, the second phase line and third phase line, the three-phase power input end include first phase input terminal, second phase input terminal with
And third phase input terminal, the three-phase current output end include first phase output end, second phase output end and third
Phase output, the first phase input terminal and the first phase output end are connected to the two of first phase line
End, the second phase input terminal and the second phase output end are connected to the both ends of second phase line, and described the
Three phase inputs and the third phase output end are connected to the both ends of the third phase line；
The low frequency common inductance include low frequency magnet ring, apart windings on the low frequency magnet ring the first inductance coil, second
Inductance coil, third inductance coil and the 4th inductance coil, first inductance coil are connected to the first phase input
Between end and the first phase output end, the second inductance coil connection and the second phase input terminal and described second
Between phase output, the third inductance coil be connected to the third phase input terminal and the third phase output end it
Between, the 4th inductance coil is connected between the middle line input terminal and the middle line output terminal；
The high frequency common mode inductance include high-frequency magnetic, apart windings in the high-frequency magnetic the 5th inductance coil, the 6th
Inductance coil, the 7th inductance coil and the 8th inductance coil, the 4th inductance coil are connected to the first phase input
Between end and the first phase output end, the 5th inductance coil connection and the second phase input terminal and described second
Between phase output, the 6th inductance coil be connected to the third phase input terminal and the third phase output end it
Between, the 7th inductance coil is connected between the middle line input terminal and the middle line output terminal.
3. three-phase four-wire power filter as claimed in claim 2, it is characterised in that: the low frequency magnet ring is amorphous magnet ring,
The high-frequency magnetic is manganese-zinc ferrite magnet ring.
4. three-phase four-wire power filter as claimed in claim 2, it is characterised in that:
It is provided with cross partition in the low frequency magnet ring and/or the high-frequency magnetic,
The cross partition in the low frequency magnet ring is used for first inductance coil, second inductance coil, described
It is isolated from each other between third inductance coil and the 4th inductance coil；
The cross partition in the high-frequency magnetic is used for the 5th inductance coil, the 6th inductance coil, described
It is isolated from each other between 7th inductance coil and the 8th inductance coil.
5. three-phase four-wire power filter as claimed in claim 2, it is characterised in that: the first differential mode capacitor component includes
First capacitor, the second capacitor and third capacitor, the first capacitor are connected between first phase line and the middle line, institute
The second capacitance connection is stated between second phase line and the middle line, the third capacitance connection is in the third phase line and institute
It states between middle line.
6. three-phase four-wire power filter as claimed in claim 5, it is characterised in that: the first differential mode capacitor component also wraps
First resistor, second resistance and 3rd resistor are included, the first resistor is connected in the both ends of the first capacitor in parallel, described
Second resistance is connected in the both ends of second capacitor in parallel, and the 3rd resistor is connected in the two of the 3rd resistor in parallel
End.
7. three-phase four-wire power filter as claimed in claim 2, it is characterised in that: the second differential mode capacitor component includes
4th capacitor, the 5th capacitor and the 6th capacitor, the 4th capacitance connection is between first phase line and the middle line, institute
The 5th capacitance connection is stated between second phase line and the middle line, the 6th capacitance connection is in the third phase line and institute
It states between middle line.
8. three-phase four-wire power filter as claimed in claim 2, it is characterised in that: the three-phase four-wire power filter is also
Including ground wire, the first common mode capacitance component includes the 7th capacitor, the 9th capacitor of the 8th capacitor and the tenth capacitor, and described the
Seven capacitance connections are between first phase line and the ground wire, and the 8th capacitance connection is in second phase line and described
Between line, the 9th capacitance connection is between the third phase line and the ground wire, and the tenth capacitance connection is in described
Between line and the ground wire.
9. three-phase four-wire power filter as claimed in claim 8, it is characterised in that: the second common mode capacitance component includes
11st capacitor, the 13rd capacitor of the 12nd capacitor and the 14th capacitor, the 11st capacitance connection is in first phase
Between line and the ground wire, the 12nd capacitance connection is between second phase line and the ground wire, the 13rd electricity
Appearance is connected between the third phase line and the ground wire, the 14th capacitance connection the middle line and the ground wire it
Between.
10. three-phase four-wire power filter as described in any one of claims 1-9, it is characterised in that: filled out in the shell
Filled with heat conductive silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910598002.8A CN110350532A (en) | 2019-07-04 | 2019-07-04 | Three-phase four-wire power filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910598002.8A CN110350532A (en) | 2019-07-04 | 2019-07-04 | Three-phase four-wire power filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110350532A true CN110350532A (en) | 2019-10-18 |
Family
ID=68178128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910598002.8A Pending CN110350532A (en) | 2019-07-04 | 2019-07-04 | Three-phase four-wire power filter |
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|---|---|---|---|---|
| TW200950326A (en) * | 2008-05-16 | 2009-12-01 | Hon Hai Prec Ind Co Ltd | Wide-band filter |
| KR20120069241A (en) * | 2010-12-20 | 2012-06-28 | 삼성전기주식회사 | Electro-magnetic interference filter |
| CN202693002U (en) * | 2012-06-12 | 2013-01-23 | 深圳市特安电子有限公司 | Two-wire system transmitter and anti-jamming circuit thereof |
| CN204290901U (en) * | 2014-11-20 | 2015-04-22 | 重庆大及电子科技有限公司 | Signal filter circuit |
| CN204290903U (en) * | 2014-11-20 | 2015-04-22 | 重庆大及电子科技有限公司 | The filter circuit that belt switch exports |
| WO2016180019A1 (en) * | 2015-05-11 | 2016-11-17 | 永济新时速电机电器有限责任公司 | Auxiliary converter and vehicle |
| CN210246320U (en) * | 2019-07-04 | 2020-04-03 | 深圳振华富电子有限公司 | Three-phase four-wire power filter |
-
2019
- 2019-07-04 CN CN201910598002.8A patent/CN110350532A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200950326A (en) * | 2008-05-16 | 2009-12-01 | Hon Hai Prec Ind Co Ltd | Wide-band filter |
| KR20120069241A (en) * | 2010-12-20 | 2012-06-28 | 삼성전기주식회사 | Electro-magnetic interference filter |
| CN202693002U (en) * | 2012-06-12 | 2013-01-23 | 深圳市特安电子有限公司 | Two-wire system transmitter and anti-jamming circuit thereof |
| CN204290901U (en) * | 2014-11-20 | 2015-04-22 | 重庆大及电子科技有限公司 | Signal filter circuit |
| CN204290903U (en) * | 2014-11-20 | 2015-04-22 | 重庆大及电子科技有限公司 | The filter circuit that belt switch exports |
| WO2016180019A1 (en) * | 2015-05-11 | 2016-11-17 | 永济新时速电机电器有限责任公司 | Auxiliary converter and vehicle |
| CN210246320U (en) * | 2019-07-04 | 2020-04-03 | 深圳振华富电子有限公司 | Three-phase four-wire power filter |
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