CN207732736U - Wide band filter - Google Patents
Wide band filter Download PDFInfo
- Publication number
- CN207732736U CN207732736U CN201820212047.8U CN201820212047U CN207732736U CN 207732736 U CN207732736 U CN 207732736U CN 201820212047 U CN201820212047 U CN 201820212047U CN 207732736 U CN207732736 U CN 207732736U
- Authority
- CN
- China
- Prior art keywords
- node
- inductance
- separately connected
- capacitance
- current input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Filters And Equalizers (AREA)
Abstract
The embodiment of the present application provides a kind of wide band filter, conducted emission suppression module can targetedly in filtering circuit frequency ranging from 10KHz~10MHz power cords conducted emission High-frequency Interference, harmonic rejection module can distortion that targetedly fundamental current of frequency ranging from 25Hz~10KHz generates in suppression circuit, radiation-emitting suppression module can be with the specific aim absorption frequency ranging from High-frequency Interference of 10KHz~18GHz with feedthrough capacitor unit, and the high-frequency coupling generated between device cable, to realize the inhibiting effect of interference and the radiation of wider frequency range from low to high, inhibition is more preferable；It will be for inhibiting the circuit of low-frequency disturbance and for inhibiting the circuit of High-frequency Interference to be arranged in a circuit, space can be saved, reduce volume.
Description
Technical field
This application involves filter circuit technical field more particularly to a kind of wide band filters.
Background technology
As electromagnetic compatibility technology rapidly develops, the application of electronics and information equipment is more and more extensive, electromagnetic compatible environment
Increasingly sophisticated and deterioration.It is not interfere with each other again to make the various equipment in same electromagnetic environment work normally, reaches " compatibility " shape
State, it is necessary to pass through various emc testings.Wherein in GJB151B-2013 standards, CE101, CE102, RE102 are electricity
The basic test project of sub- product, for power cord conducted emission test CE101, CE102 and electricity in emc testing
Field radiation emission test RE102 projects are exceeded, are using independent electric source filter circuit, harmonic suppression circuit in the related technology
And the device of relevant treatment radiation-emitting, such to design the structure space for needing bigger, the connection of input and output is mixed and disorderly, makes
It can also make added cost with multiple filter circuits；And for the project that desired size, weight and performance are taken into account simultaneously, it is difficult to do
To it is small while performance can be guaranteed again.
Utility model content
To overcome the problems, such as at least to a certain extent present in the relevant technologies, the application provides a kind of wide band filter.
The embodiment of the present application provides a kind of wide band filter, including current input terminal mouth, current output terminal mouth, conduction hair
Penetrate suppression module, harmonic rejection module, radiation-emitting suppression module, feedthrough capacitor unit；
The current input terminal mouth is sent out by the conducted emission suppression module, the harmonic rejection module, the radiation
Suppression module is penetrated to connect with the feedthrough capacitor unit；The feedthrough capacitor unit is connect with the current output terminal mouth；
Wherein, the conducted emission suppression module, for frequency ranging from 10KHz~10MHz power cords in filtering circuit
The interference of conducted emission；
The harmonic rejection module, for frequency ranging from 25Hz in suppression circuit~10KHz fundamental currents generate abnormal
Become；
The radiation-emitting suppression module and feedthrough capacitor unit are used for the absorption frequency ranging from height of 10KHz~18GHz
The high-frequency coupling generated between frequency interference and device cable.
Preferably, the conducted emission suppression module is separately connected the current input terminal mouth and the harmonics restraint mould
Block, the radiation suppression module are separately connected the harmonic rejection module and the feedthrough capacitor unit.
Preferably, the current input terminal mouth includes zero terminal, fire line terminal, ground wire terminal；The current output terminal
Mouth includes zero terminal, fire line terminal；The conducted emission suppression module includes first, second, third, fourth, the five, the 6th
Capacitance, the first, second, third inductance, first resistor；The harmonic rejection module include the seven, the 8th capacitances, the four, the 5th
Inductance；The radiation-emitting suppression module includes the 6th inductance；The feedthrough capacitor unit includes the first feedthrough capacitor and second
Feedthrough capacitor；First inductance, the 6th inductance are two-phase common mode inductance；
First capacitance is separately connected the fire line terminal and zero terminal of the current input terminal mouth；
The first resistor is separately connected the fire line terminal and zero terminal of the current input terminal mouth；
The both ends of the first coil of first inductance are separately connected the fire line terminal and first of the current input terminal mouth
Node；
The both ends of second coil of first inductance are separately connected the zero terminal and second of the current input terminal mouth
Node；
The third capacitance is separately connected the ground wire terminal of the first node and the current input terminal mouth；
4th capacitance is separately connected the ground wire terminal of the second node and the current input terminal mouth；
Second inductance, is separately connected the first node and third node；
The third inductance, is separately connected the second node and fourth node；
Second capacitance is separately connected the third node and fourth node；
5th capacitance is separately connected the ground wire terminal of the third node and the current input terminal mouth；
6th capacitance is separately connected the ground wire terminal of the fourth node and the current input terminal mouth；
4th inductance is separately connected the third node and the 5th node；
5th inductance, is separately connected the fourth node and the 6th node；
7th capacitance is separately connected the third node and the 5th node；
8th capacitance is separately connected the fourth node and the 6th node；
The both ends of the first coil of 6th inductance, are separately connected the 5th node and the 7th node；
The both ends of second coil of the 7th inductance, are separately connected the 6th node and the 8th node；
First feedthrough capacitor is separately connected the fire line terminal of the 7th node and the current output terminal mouth；
Second feedthrough capacitor is separately connected the zero terminal of the 8th node and the current output terminal mouth.
Preferably, the conducted emission suppression module further includes the 7th inductance；7th inductance is two-phase common mode inductance；
Second inductance connects the first node by the first coil of the 7th inductance；
The third inductance connects the second node by the second coil of the 7th inductance.
Preferably, the harmonic rejection module further includes the 8th inductance, the 9th inductance, the 9th capacitance, the tenth capacitance；
4th inductance passes through the 5th node described in the 8th inductance connection；
5th inductance passes through the 6th node described in the 9th inductance connection；
7th capacitance passes through the 5th node described in the 8th inductance connection；
8th capacitance passes through the 6th node described in the 9th inductance connection；
The first end of 9th capacitance connects the first end of the 8th inductance, and second end connects the second end of the 8th inductance；
The first end of tenth capacitance connects the first end of the 9th inductance, and second end connects the second end of the 9th inductance.
Preferably, the current input terminal mouth includes the first, second, third fire line terminal, ground wire terminal；The electric current is defeated
Exit port includes the first, second, third fire line terminal；The conducted emission suppression module includes the 11st to the 19th capacitance,
Tenth to the 13rd inductance, second, third, the 4th resistance；The harmonic rejection module includes the 20th to the 22nd capacitance,
14th to the 16th inductance；The radiation emission module includes the 17th inductance；The feedthrough capacitor unit includes third,
Four, the 5th feedthrough capacitor；Ten, the 17th inductance is three-phase common mode inductance；
11st capacitance is separately connected the first fire line terminal and the 9th node of the current input terminal；
The second resistance is separately connected the first fire line terminal and the 9th node of the current input terminal；
12nd capacitance is separately connected the second fire line terminal of the current input terminal and the 9th node；
The 3rd resistor is separately connected the second fire line terminal of the current input terminal and the 9th node；
13rd capacitance is separately connected the third fire line terminal of the current input terminal and the 9th node；
4th resistance is separately connected the third fire line terminal of the current input terminal and the 9th node；
The both ends of the first coil of tenth inductance are separately connected the first fire line terminal and of the current input terminal
11 nodes；
The both ends of second coil of the tenth inductance are separately connected the second fire line terminal and of the current input terminal
12 nodes；
The both ends of the tertiary coil of tenth inductance are separately connected the third fire line terminal and of the current input terminal
13 nodes；
14th capacitance is separately connected the protelum point and the 11st node；
15th capacitance is separately connected the protelum point and the 12nd node；
16th capacitance is separately connected the protelum point and the 13rd node；
17th capacitance is separately connected the ground wire terminal of the 11st node and the current input terminal；
18th capacitance is separately connected the ground wire terminal of the 12nd node and the current input terminal；
19th capacitance is separately connected the ground wire terminal of the 13rd node and the current input terminal；
11st inductance is separately connected the 11st node and the 14th node；
12nd inductance is separately connected the 12nd node and the 15th node；
13rd inductance is separately connected the 13rd node and the 16th node；
14th inductance is separately connected the 14th node and the 17th node；
15th inductance is separately connected the 15th node and the 18th node；
16th inductance is separately connected the 16th node and the 19th node；
20th capacitance is separately connected the 14th node and the 17th node；
21st capacitance is separately connected the 15th node and the 18th node；
22nd capacitance is separately connected the 16th node and the 19th node；
The both ends of the first coil of 17th inductance are separately connected the 17th node and the 20th node；
The both ends of second coil of the 17th inductance are separately connected the 18th node and the 21st node；
The both ends of the tertiary coil of 17th inductance are separately connected the 19th node and the 22nd node；
The third feedthrough capacitor is separately connected the first fire line terminal of the current output terminal mouth and the 20th section
Point；
4th feedthrough capacitor is separately connected the second fire line terminal and the described 21st of the current output terminal mouth
Node；
5th feedthrough capacitor is separately connected the third fire line terminal and the described 22nd of the current output terminal mouth
Node.
Preferably, second inductance, the third inductance, the 4th inductance, the 5th inductance are differential mode electricity
Sense；The magnetic core of first inductance is manganese-zinc ferrite magnet ring；The magnetic core of 6th inductance is nickel-zinc ferrite magnet ring.
Preferably, the magnetic core of the 7th inductance is manganese-zinc ferrite magnet ring.
Preferably, the 11st to 16 inductance, is differential mode inductance.
Preferably, further include metal shell.
The technical solution that embodiments herein provides can include the following benefits：
In the wide band filter circuit of the embodiment of the present application, conducted emission suppression module can be targetedly in filtering circuit
Frequency range is the High-frequency Interference of 10KHz~10MHz power cord conducted emissions, and harmonic rejection module can targetedly inhibit electricity
The distortion that the fundamental current of frequency ranging from 25Hz~10KHz generates in road, radiation-emitting suppression module and feedthrough capacitor unit
The high frequency coupling that can be ranging from generated between the High-frequency Interference of 10KHz~18GHz and device cable with specific aim absorption frequency
It closes, to realize the inhibiting effect of interference and the radiation of wider frequency range from low to high, inhibition is more preferable；It will use
In the circuit for inhibiting low-frequency disturbance and for inhibiting the circuit of High-frequency Interference to be arranged in a circuit, space can be saved, is contracted
Small size.
It should be understood that above general description and to state hereinafter be only exemplary and explanatory, can not limit this
Application.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and the principle together with specification for explaining the application.
Fig. 1 is a kind of circuit connection diagram one of wide band filter shown according to an exemplary embodiment.
Fig. 2 is a kind of circuit connection diagram two of wide band filter shown according to an exemplary embodiment.
Fig. 3 is that the circuit of conducted emission suppression module in a kind of wide band filter shown according to an exemplary embodiment connects
Connect schematic diagram.
Fig. 4 is that the circuit connection of harmonic rejection module in a kind of wide band filter shown according to an exemplary embodiment is shown
It is intended to.
Fig. 5 is a kind of circuit connection diagram three of wide band filter shown according to an exemplary embodiment.
Reference numeral：Conducted emission suppression module -1, harmonic rejection module -2, radiation-emitting suppression module -3, punching electricity
Hold unit -4, current input terminal mouth -5, current output terminal mouth -6, first resistor-R, second resistance-R2,3rd resistor-R3, the
Four resistance-R4, the first capacitance-C1, the second capacitance-C2, third capacitance-C3, the 4th capacitance-C4, the 5th capacitance-C5, the 6th electricity
Appearance-C6, the 7th capacitance-C7, the 8th capacitance-C8, the 9th capacitance-C9, the tenth capacitance-C10, the 11st capacitance-C11, the 12nd
Capacitance-C12, the 13rd capacitance-C13, the 14th capacitance-C14, the 15th capacitance-C15, the 16th capacitance-C16, the 17th electricity
Appearance-C17, the 18th capacitance-C18, the 19th capacitance-C19, the 20th capacitance C20, the 21st capacitance-C21, the 22nd
Capacitance-C22, the 23rd capacitance-C23, the 24th capacitance-C24, the 25th capacitance-C25, the first inductance-L1, second
Inductance-L2, third inductance-L3, the 4th inductance-L4, the 5th inductance-L5, the 6th inductance-L6, the 7th inductance-L7, the 8th inductance-
L8, the 9th inductance-L9, the tenth inductance-L10, the 11st inductance-L11, the 12nd inductance-L12, the 13rd inductance-L13, the tenth
Four inductance-L14, the 15th inductance-L15, the 16th inductance-L16, the 17th inductance-L17, first node-a, second node-
B, third node-c, fourth node-d, the 5th node-e, the 6th node-f, the 7th node-g, the 8th node-h, the 9th node-
I, protelum point-j, the 11st node-k, the 12nd node-l, the 13rd node-m, the 14th node-n, the 15th node-
O, the 16th node-p, the 17th node-q, the 18th node-r, the 19th node-s, the 20th node-t, the 21st section
Point-u, the 22nd node-v.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of wide band filter be described in detail in claims, the application.
Referring to Fig.1, the present embodiment provides a kind of wide band filters, including current input terminal mouth 5, current output terminal mouth 6, biography
Lead transmitting suppression module 1, harmonic rejection module 2, radiation-emitting suppression module 3, feedthrough capacitor unit 4；
Current input terminal mouth 5 by conducted emission suppression module 1, harmonic rejection module 2, radiation-emitting suppression module 3 with
Feedthrough capacitor unit connection 4；Feedthrough capacitor unit 5 is connect with current output terminal mouth 6；
Wherein, conducted emission suppression module 1 is uploaded for the ranging from 10KHz~10MHz power cords of frequency in filtering circuit
Lead the interference of transmitting；
Harmonic rejection module 2, the distortion generated for the ranging from 25Hz~10KHz fundamental currents of frequency in suppression circuit；
Radiation-emitting suppression module 3 and feedthrough capacitor unit 4 are used for the absorption frequency ranging from high frequency of 10KHz~18GHz
The high-frequency coupling generated between interference and device cable.
Wherein, the circuit devcie of the radiation-emitting interference of generation can be equipment, subsystem shell and interconnection cable etc..
Wherein, conducted emission suppression module 1 can make Device under test pass through the test of CE101 power cord conducted emissions；Harmonic wave presses down
Molding block 2 can make Device under test pass through the test of CE102 power cord conducted emissions；Radiation-emitting suppression module 3 and feedthrough capacitor list
Member 4 can make Device under test pass through the transmitting test of RE102 electric field radiations.Using this wide band filter, can effectively reduce in circuit
Interference and radiation.
In the present embodiment, conducted emission suppression module 1 can targetedly frequency ranging from 10KHz in filtering circuit~
The High-frequency Interference of 10MHz power cord conducted emissions, harmonic rejection module 2 can targetedly frequency be ranging from suppression circuit
The distortion that the fundamental current of 25Hz~10KHz generates, radiation-emitting suppression module 3 can be inhaled with feedthrough capacitor unit 4 with specific aim
The high-frequency coupling generated between the High-frequency Interference and device cable that frequency range is 10KHz~18GHz is received, to realize
The inhibiting effect of interference and the radiation of wider frequency range, inhibition are more preferable from low to high；It will be used to that low frequency to be inhibited to do
The circuit disturbed and for inhibiting the circuit of High-frequency Interference to be arranged in a circuit, can save space, reduce volume.
In the wide band filter of the present embodiment, electric current input, output port External connecting part, can be lead, weld tabs, spiral shell
The forms such as bolt, connector.
In application, the current input terminal mouth of wide band filter can connect Switching Power Supply or line impedance stabilization net work etc., electricity
Stream output port is connected in Device under test.
Wherein, there are many connection types of above-mentioned each module, wherein the first connection type can be：Current input terminal
Mouth 5 connects conducted emission suppression modules 1, and harmonic rejection module 2 is separately connected conducted emission suppression module 1 and radiation-emitting inhibits
Module 3, feedthrough capacitor unit 4 are separately connected radiation-emitting suppression module 3 and current output terminal mouth 6；
Second of connection type can be that current input terminal mouth 5 connects harmonic rejection module 2, conducted emission suppression module 1
It is separately connected harmonic rejection module 2 and radiation-emitting suppression module 3, feedthrough capacitor unit 4 is separately connected radiation-emitting and inhibits mould
Block 3 and current output terminal mouth 6；
The third connection type can be that current input terminal mouth 5 connects radiation-emitting suppression module 3, and conducted emission inhibits
Module 1 is separately connected radiation-emitting suppression module 3 and harmonic rejection module 2, and feedthrough capacitor unit 4 is separately connected harmonics restraint mould
Block 2 and current output terminal mouth 6；
4th kind of connection type can be that current input terminal mouth 5 connects radiation-emitting suppression module 3, harmonic rejection module 2
It is separately connected radiation-emitting suppression module 3 and conducted emission suppression module 1, feedthrough capacitor unit 4 is separately connected conducted emission suppression
Molding block 1 and current output terminal mouth 6.
It is understood that wide band filter can both be applied in three-phase power circuit, can also apply in single-phase electricity
In source circuit, for different power circuits, the concrete structure of each module in wide band filter is different.In following embodiment,
By taking the first above-mentioned connection type as an example, the concrete structure of each module in wide band filter is illustrated.
The case where power circuit is single phase power circuits：
In single phase power circuits, current input terminal mouth 5 includes zero terminal, fire line terminal, ground wire terminal；Electric current exports
Port 6 includes zero terminal, fire line terminal.
Fig. 2 is a kind of circuit connection diagram for wide band filter that the application one embodiment provides.With reference to Fig. 2, pass
Lead transmitting suppression module 1 include first, second, third, fourth, the five, the 6th capacitances, the first, second, third inductance, first
Resistance；Harmonic rejection module 2 includes the seven, the 8th capacitances, the four, the 5th inductance；Radiation-emitting suppression module 3 includes the 6th electricity
Sense；Feedthrough capacitor unit 4 includes the first feedthrough capacitor and the second feedthrough capacitor；First inductance, the 6th inductance are two-phase common mode
Inductance；
First capacitance C1 is separately connected the fire line terminal and zero terminal of current input terminal mouth 5；
First resistor R1 is separately connected the fire line terminal and zero terminal of current input terminal mouth 5；
The fire line terminal of one end connection current input terminal mouth 5 of the first coil of first inductance L1, other end connection first
Node a；
The zero terminal of one end connection current input terminal mouth 5 of the second coil of first inductance L1, other end connection second
Node b；
Third capacitance C3, is separately connected the ground wire terminal of first node a and current input terminal mouth 5；
4th capacitance C4 is separately connected the ground wire terminal of second node b and current input terminal mouth 5；
Second inductance L2 is separately connected first node a and third node c；
Third inductance L3, is separately connected second node b and fourth node d；
Second capacitance C2, is separately connected third node c and fourth node d；
5th capacitance C5 is separately connected the ground wire terminal of third node c and current input terminal mouth 5；
6th capacitance C6 is separately connected the ground wire terminal of fourth node d and current input terminal mouth 5；
4th inductance L4 is separately connected third node c and the 5th node e；
5th inductance L5 is separately connected fourth node d and the 6th node f；
7th capacitance C7 is separately connected third node c and the 5th node e；
8th capacitance C8 is separately connected fourth node d and the 6th node f；
One end of the first coil of 6th inductance L6 connects the 5th node e, and the other end connects the 7th node g；
One end of the second coil of 6th inductance L6 connects the 6th node f, and the other end connects the 8th node h；
First feedthrough capacitor C23, is separately connected the fire line terminal of the 7th node g and current output terminal mouth 6；
Second feedthrough capacitor C24, is separately connected the zero terminal of the 8th node h and current output terminal mouth 6.
In the present embodiment, C1, C2, L2, L3 in conducted emission suppression module 1 are differential mode effect partial, can be to 10KHz-
The interference and radiation of 1MHz has inhibiting effect；C3, C4, C5, C6, L1 are common mode effect partial, can be to the interference of 100KHz or more
There is inhibiting effect with radiation.
Wherein, the first inductance L1, the 6th inductance L6 is two-phase common mode inductance, is wound on same magnetic core by two lines circle,
And the number of turns and phase are all identical.
Wherein, the second inductance L2, third inductance L3, the 4th inductance L4, the 5th inductance L5 are differential mode inductance；First electricity
The magnetic core for feeling L1 is manganese-zinc ferrite magnet ring；The magnetic core of 6th inductance L6 is nickel-zinc ferrite magnet ring.
First inductance L1 uses magnetic core for manganese-zinc ferrite magnet ring, and coiling inductance, ferritic magnetic conductivity is higher, low frequency
Impedance is bigger, and the impedance of high frequency is smaller.So manganese-zinc ferrite magnet ring is selected to inhibit low-frequency disturbance around the inductance made.
6th inductance L6 uses ferrite bead-nickel-zinc ferrite magnet ring of low magnetic permeability, coiling inductance, because of ferrite
The magnetic conductivity of magnet ring is lower, and impedance is smaller when low frequency, and impedance when high frequency is bigger.So select nickel-zinc ferrite magnet ring around
The inductance made inhibits High-frequency Interference.
Further, Fig. 3 is conducted emission suppression module in a kind of wide band filter that the application one embodiment provides
Circuit connection diagram.With reference to Fig. 3, conducted emission suppression module 1 further includes the 7th inductance L7；7th inductance L7 is total for two-phase
Mould inductance；
Second inductance L2 connects first node a by the first coil of the 7th inductance L7；
Third inductance L3 connects second node b by the second coil of the 7th inductance L7.
In wide band filter provided in this embodiment, the 7th inductance L7 is two-phase common mode inductance, the magnetic core of the 7th inductance L7
It for nickel-zinc ferrite magnet ring, is wound on same magnet ring by two lines circle, and the number of turns and phase are all identical.
The structure of conducted emission suppression module based on Fig. 3, wide band filter utilize impedance matching principle reasonable distribution not
Capacitance, inductance, the resistance of same parameter, final realize effectively filter out the interference of specific frequency point or frequency range on power cord, obtain
To the power supply signal of a specific frequency, or eliminate the power supply signal after a specific frequency.
Further, Fig. 4 is the electricity of harmonic rejection module in a kind of wide band filter that the application one embodiment provides
Road connection diagram.With reference to Fig. 4, harmonic rejection module 2 further includes the 8th inductance L8, the 9th inductance L9, the 9th capacitance C9, the tenth
Capacitance C10；
4th inductance L4 passes through the 5th node e of the 8th inductance L8 connections；
5th inductance L5 passes through the 6th node f of the 9th inductance L9 connections；
7th capacitance C7 passes through the 5th node e of the 8th inductance L8 connections；
8th capacitance C8 passes through the 6th node f of the 9th inductance L9 connections；
The first end of 9th capacitance C9 connects the first end of the 8th inductance L8, and second end connects the second of the 8th inductance L8
End；
The first end of tenth capacitance C10 connects the first end of the 9th inductance L9, and second end connects the second of the 9th inductance L9
End.
The electric current and the non-linear relationship of voltage absorbed for nonlinear-load, causes electric current that wave distortion occurs and causes
The non-linear relationship of terminal voltage, the harmonic problem just brought.The presence of harmonic wave can cause the malfunction of relay protection facility, increase
Electric power facility load reduces system power factor, interferes neighbouring power electronic equipment, communication apparatus etc..
The structure of harmonic rejection module based on Fig. 4, in wide band filter provided in this embodiment, circuit is parallel resonance
Circuit can effectively inhibit harmonic wave, and by adjusting the capacitor and inductor in circuit, it is that target eliminates Frequency point to make resonant frequency, in this mesh
When mark Frequency point has harmonic wave to pass through, high impedance is showed, open circuit is equal to, target harmonic wave will be consumed and be converted into thermal energy.
The case where power circuit is three-phase power circuit：
In three-phase power circuit, current input terminal mouth 5 includes the first, second, third fire line terminal, ground wire terminal；Electricity
It includes the first, second, third fire line terminal to flow output port 6.
Fig. 5 is a kind of circuit connection diagram three for wide band filter that the application one embodiment provides.Reference Fig. 5,
Conducted emission suppression module 1 include the 11st to the 19th capacitance, the tenth to the 13rd inductance, second, third, the 4th resistance；
Harmonic rejection module 2 includes the 20th to the 22nd capacitance, the 14th to the 16th inductance；Radiation emission module includes the tenth
Seven inductance；Feedthrough capacitor unit 4 includes third, the four, the 5th feedthrough capacitors；Tenth inductance, the 17th inductance are three-phase common mode
Inductance；
11st capacitance C11 is separately connected the first fire line terminal and the 9th node i of current input terminal；
Second resistance R2 is separately connected the first fire line terminal and the 9th node i of current input terminal；
12nd capacitance C12 is separately connected the second fire line terminal and the 9th node i of current input terminal；
3rd resistor R3 is separately connected the second fire line terminal and the 9th node i of current input terminal；
13rd capacitance C13 is separately connected the third fire line terminal and the 9th node i of current input terminal；
4th resistance R4 is separately connected the third fire line terminal and the 9th node i of current input terminal；
First fire line terminal of one end connection current input terminal of the first coil of the tenth inductance, other end connection the 11st
Node k；
Second fire line terminal of one end connection current input terminal of the second coil of the tenth inductance, other end connection the 12nd
Node l；
The third fire line terminal of one end connection current input terminal of the tertiary coil of tenth inductance, other end connection the 13rd
Node m；
14th capacitance C14 is separately connected protelum point j and the 11st node k；
15th capacitance C15 is separately connected protelum point j and the 12nd node l；
16th capacitance C16 is separately connected protelum point j and the 13rd node m；
17th capacitance C17 is separately connected the ground wire terminal of the 11st node k and current input terminal；
18th capacitance C18 is separately connected the ground wire terminal of the 12nd node l and current input terminal；
19th capacitance C19 is separately connected the ground wire terminal of the 13rd node m and current input terminal；
11st inductance L11 is separately connected the 11st node k and the 14th node n；
12nd inductance L12 is separately connected the 12nd node l and the 15th node o；
13rd inductance L13 is separately connected the 13rd node m and the 16th node p；
14th inductance L14 is separately connected the 14th node n and the 17th node q；
15th inductance L15 is separately connected the 15th node o and the 18th node r；
16th inductance L16 is separately connected the 16th node p and the 19th node s；
20th capacitance C20 is separately connected the 14th node n and the 17th node q；
21st capacitance C21 is separately connected the 15th node o and the 18th node r；
22nd capacitance C22 is separately connected the 16th node p and the 19th node s；
One end of the first coil of 17th inductance connects the 17th node q, and the other end connects the 20th node t；
One end of second coil of the 17th inductance connects the 18th node r, and the other end connects the 21st node u；
One end of the tertiary coil of 17th inductance connects the 19th node s, and the other end connects the 22nd node v；
Third feedthrough capacitor C25 is separately connected the first fire line terminal and the 20th node t of current output terminal mouth 6；
4th feedthrough capacitor C26 is separately connected the second fire line terminal and the 21st node u of current output terminal mouth 6；
5th feedthrough capacitor C27 is separately connected the third fire line terminal and the 22nd node v of current output terminal mouth 6.
Wherein, L10, L17 are three-phase common mode inductance, are to be wound on same magnetic core by three coils, and the number of turns and phase are all
It is identical.L11, L12, L13, L14, L15, L16 are differential mode inductance.
Wide band filter provided in this embodiment further includes metal shell.
Based on above-mentioned related embodiment, in wide band filter, the ground wire terminal of current input terminal mouth with metal shell phase
Even, with safety ground.
Based on above-mentioned related embodiment, in wide band filter, feedthrough capacitor is a kind of three terminal capacitor, with common three ends electricity
Appearance is compared, since it is directly installed on metal shell, its grounded inductor smaller, almost without the shadow of lead-in inductance
It rings；In addition, its input/output terminal is isolated by metallic plate, high-frequency coupling is eliminated, feedthrough capacitor is also therefore made to have close to reason
Think the filter effect of capacitance.Adjacent nickel zinc inductance composition high frequency choke coil has the function of logical low frequency, resistance high frequency.
Based on above-mentioned related embodiment, in wide band filter, because the self-induced e.m.f of inductance can hinder the variation of primary current, because
This, setting common mode inductance is to hinder the mutation of circuital current.Common mode inductance can transmit difference mode signal, and direct current and frequency are very low
Difference mode signal can pass through, and prodigious impedance is then presented for high frequency common mode noise, carry out common mode electricity in suppression circuit with this
The interference of stream.
Based on above-mentioned related embodiment, in wide band filter, C1, C2 can form low-impedance path to interference；C3、C4、C5、
C6 can be by unwanted AC signal shorted to earth in circuit；R1, R2, R3, R4 play discharging function, resistance shape in parallel with capacitance
At a circuit, the electricity stored in capacitance is shed in the form of resistance heating.
It is understood that particular circuit configurations of above-mentioned second of the connection type to the 4th kind of connection type, Ke Yican
Implemented according to the related embodiment of the first above-mentioned connection type.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to same or analogous content in other embodiment.
It should be noted that in the description of the present application, term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indicating or implying relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of wide band filter, which is characterized in that inhibit mould including current input terminal mouth, current output terminal mouth, conducted emission
Block, harmonic rejection module, radiation-emitting suppression module, feedthrough capacitor unit；
The current input terminal mouth is pressed down by the conducted emission suppression module, the harmonic rejection module, the radiation-emitting
Molding block is connect with the feedthrough capacitor unit；The feedthrough capacitor unit is connect with the current output terminal mouth；
Wherein, the conducted emission suppression module, the power cord for frequency ranging from 10KHz~10MHz in filtering circuit pass
Lead the interference of transmitting；
The harmonic rejection module, the distortion that the fundamental current for frequency ranging from 25Hz~10KHz in suppression circuit generates；
The radiation-emitting suppression module and feedthrough capacitor unit, it is dry for the absorption frequency ranging from high frequency of 10KHz~18GHz
Disturb and device cable between the high-frequency coupling that generates.
2. wide band filter as described in claim 1, which is characterized in that the conducted emission suppression module is separately connected described
Current input terminal mouth and the harmonic rejection module, the radiation suppression module are separately connected the harmonic rejection module and described
Feedthrough capacitor unit.
3. wide band filter as claimed in claim 2, which is characterized in that the current input terminal mouth includes zero terminal, fire
Line terminals, ground wire terminal；The current output terminal mouth includes zero terminal, fire line terminal；The conducted emission suppression module packet
Include first, second, third, fourth, the five, the 6th capacitances, the first, second, third inductance, first resistor；The harmonics restraint
Module includes the seven, the 8th capacitances, the four, the 5th inductance；The radiation-emitting suppression module includes the 6th inductance；The punching
Capacitor cell includes the first feedthrough capacitor and the second feedthrough capacitor；First inductance, the 6th inductance are two-phase common mode inductance；
First capacitance is separately connected the fire line terminal and zero terminal of the current input terminal mouth；
The first resistor is separately connected the fire line terminal and zero terminal of the current input terminal mouth；
One end of the first coil of first inductance connects the fire line terminal of the current input terminal mouth, other end connection first
Node；
One end of second coil of first inductance connects the zero terminal of the current input terminal mouth, other end connection second
Node；
The third capacitance is separately connected the ground wire terminal of the first node and the current input terminal mouth；
4th capacitance is separately connected the ground wire terminal of the second node and the current input terminal mouth；
Second inductance, is separately connected the first node and third node；
The third inductance, is separately connected the second node and fourth node；
Second capacitance is separately connected the third node and fourth node；
5th capacitance is separately connected the ground wire terminal of the third node and the current input terminal mouth；
6th capacitance is separately connected the ground wire terminal of the fourth node and the current input terminal mouth；
4th inductance is separately connected the third node and the 5th node；
5th inductance, is separately connected the fourth node and the 6th node；
7th capacitance is separately connected the third node and the 5th node；
8th capacitance is separately connected the fourth node and the 6th node；
One end of the first coil of 6th inductance connects the 5th node, and the other end connects the 7th node；
One end of second coil of the 6th inductance connects the 6th node, and the other end connects the 8th node；
First feedthrough capacitor is separately connected the fire line terminal of the 7th node and the current output terminal mouth；
Second feedthrough capacitor is separately connected the zero terminal of the 8th node and the current output terminal mouth.
4. wide band filter as claimed in claim 3, which is characterized in that the conducted emission suppression module further includes the 7th electricity
Sense；7th inductance is two-phase common mode inductance；
Second inductance connects the first node by the first coil of the 7th inductance；
The third inductance connects the second node by the second coil of the 7th inductance.
5. wide band filter as claimed in claim 3, which is characterized in that the harmonic rejection module further include the 8th inductance,
9th inductance, the 9th capacitance, the tenth capacitance；
4th inductance passes through the 5th node described in the 8th inductance connection；
5th inductance passes through the 6th node described in the 9th inductance connection；
7th capacitance passes through the 5th node described in the 8th inductance connection；
8th capacitance passes through the 6th node described in the 9th inductance connection；
The first end of 9th capacitance connects the first end of the 8th inductance, and second end connects the second end of the 8th inductance；
The first end of tenth capacitance connects the first end of the 9th inductance, and second end connects the second end of the 9th inductance.
6. wide band filter as claimed in claim 2, which is characterized in that the current input terminal mouth includes first, second, the
Three fire line terminals, ground wire terminal；The current output terminal mouth includes the first, second, third fire line terminal；The conducted emission suppression
Molding block include the 11st to the 19th capacitance, the tenth to the 13rd inductance, second, third, the 4th resistance；The harmonics restraint
Module includes the 20th to the 22nd capacitance, the 14th to the 16th inductance；The radiation emission module includes the 17th electricity
Sense；The feedthrough capacitor unit includes third, the four, the 5th feedthrough capacitors；Ten, the 17th inductance is three-phase common mode electricity
Sense；
11st capacitance is separately connected the first fire line terminal and the 9th node of the current input terminal；
The second resistance is separately connected the first fire line terminal and the 9th node of the current input terminal；
12nd capacitance is separately connected the second fire line terminal of the current input terminal and the 9th node；
The 3rd resistor is separately connected the second fire line terminal of the current input terminal and the 9th node；
13rd capacitance is separately connected the third fire line terminal of the current input terminal and the 9th node；
4th resistance is separately connected the third fire line terminal of the current input terminal and the 9th node；
One end of the first coil of tenth inductance connects the first fire line terminal of the current input terminal, other end connection the
11 nodes；
One end of second coil of the tenth inductance connects the second fire line terminal of the current input terminal, other end connection the
12 nodes；
One end of the tertiary coil of tenth inductance connects the third fire line terminal of the current input terminal, other end connection the
13 nodes；
14th capacitance is separately connected the protelum point and the 11st node；
15th capacitance is separately connected the protelum point and the 12nd node；
16th capacitance is separately connected the protelum point and the 13rd node；
17th capacitance is separately connected the ground wire terminal of the 11st node and the current input terminal；
18th capacitance is separately connected the ground wire terminal of the 12nd node and the current input terminal；
19th capacitance is separately connected the ground wire terminal of the 13rd node and the current input terminal；
11st inductance is separately connected the 11st node and the 14th node；
12nd inductance is separately connected the 12nd node and the 15th node；
13rd inductance is separately connected the 13rd node and the 16th node；
14th inductance is separately connected the 14th node and the 17th node；
15th inductance is separately connected the 15th node and the 18th node；
16th inductance is separately connected the 16th node and the 19th node；
20th capacitance is separately connected the 14th node and the 17th node；
21st capacitance is separately connected the 15th node and the 18th node；
22nd capacitance is separately connected the 16th node and the 19th node；
One end of the first coil of 17th inductance connects the 17th node, and the other end connects the 20th node；
One end of second coil of the 17th inductance connects the 18th node, and the other end connects the 21st node；
One end of the tertiary coil of 17th inductance connects the 19th node, and the other end connects the 22nd node；
The third feedthrough capacitor is separately connected the first fire line terminal of the current output terminal mouth and the 20th node；
4th feedthrough capacitor is separately connected the second fire line terminal of the current output terminal mouth and the 21st section
Point；
5th feedthrough capacitor is separately connected the third fire line terminal of the current output terminal mouth and the 22nd section
Point.
7. wide band filter as claimed in claim 3, which is characterized in that second inductance, the third inductance, described
Four inductance, the 5th inductance, is differential mode inductance；The magnetic core of first inductance is manganese-zinc ferrite magnet ring；Described 6th
The magnetic core of inductance is nickel-zinc ferrite magnet ring.
8. wide band filter as claimed in claim 4, which is characterized in that the magnetic core of the 7th inductance is nickel-zinc ferrite magnetic
Ring.
9. wide band filter as claimed in claim 6, which is characterized in that the 11st to 16 inductance is differential mode electricity
Sense.
10. wide band filter as described in claim 1, which is characterized in that further include metal shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820212047.8U CN207732736U (en) | 2018-02-07 | 2018-02-07 | Wide band filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820212047.8U CN207732736U (en) | 2018-02-07 | 2018-02-07 | Wide band filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207732736U true CN207732736U (en) | 2018-08-14 |
Family
ID=63081027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820212047.8U Active CN207732736U (en) | 2018-02-07 | 2018-02-07 | Wide band filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207732736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429604A (en) * | 2019-08-29 | 2019-11-08 | 西安交通大学 | A kind of multistage strong electromagnetic pulse protection power-supply filter |
-
2018
- 2018-02-07 CN CN201820212047.8U patent/CN207732736U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429604A (en) * | 2019-08-29 | 2019-11-08 | 西安交通大学 | A kind of multistage strong electromagnetic pulse protection power-supply filter |
| CN110429604B (en) * | 2019-08-29 | 2021-04-20 | 西安交通大学 | Multistage strong electromagnetic pulse protection power filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108631292A (en) | Active filter | |
| CN105047385B (en) | A kind of EMI suppression circuits of high frequency transformer and its composition | |
| CN104270002B (en) | Passive suppression method for conducted electromagnetic interface of PWM (power width modulation) power converter | |
| CN102570462A (en) | Input and output high isolation filter and design method thereof | |
| CN210985938U (en) | High-frequency EMC filter circuit and household appliance | |
| CN107134916B (en) | Device and method for preventing electromagnetic information leakage in alternating-current power supply transmission | |
| RU201014U1 (en) | ELECTROMAGNETIC INTERFERENCE FILTER | |
| CN105048797A (en) | Filter circuit for electromagnetic heating of electromagnetic type heating electric cooker | |
| CN207732736U (en) | Wide band filter | |
| CN104201590A (en) | Method for inhibiting high-frequency transduction interference in GIS | |
| CN209233717U (en) | A kind of EMC filter circuit | |
| CN101202150B (en) | EMC filter inductance | |
| CN105141272B (en) | Broadband power line carrier communication tests system electric source filter circuit and filter | |
| CN217486380U (en) | Filtering device for eliminating electric fast transient pulse group interference | |
| CN207442843U (en) | A kind of power line carrier noise suppressed filter | |
| CN102509971A (en) | Broadband carrier-leak-proof safety power supply socket | |
| CN205847083U (en) | EMC filter circuit and electromagnetism stove | |
| KR102589292B1 (en) | Electromagnetic Interference Filter | |
| CN201418064Y (en) | Filter for an electronic beam processing apparatus | |
| CN203968115U (en) | A kind of EMC subtest circuit and EMC test macro | |
| CN207518473U (en) | A kind of electromagnetic compatibility wave filter | |
| CN207336589U (en) | A kind of filter being applied in EMC test | |
| CN206313658U (en) | High current insertion loss electromagnetic interface filter high | |
| CN101420842B (en) | Equipment for reducing overproof radiation caused by electricity power line | |
| CN210093187U (en) | High-frequency-band filtering device and electrical equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |