CN203734632U - Electromagnetic interference filter suitable for high voltage Hall voltage sensor - Google Patents
Electromagnetic interference filter suitable for high voltage Hall voltage sensor Download PDFInfo
- Publication number
- CN203734632U CN203734632U CN201320811521.6U CN201320811521U CN203734632U CN 203734632 U CN203734632 U CN 203734632U CN 201320811521 U CN201320811521 U CN 201320811521U CN 203734632 U CN203734632 U CN 203734632U
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- CN
- China
- Prior art keywords
- wiring board
- printed wiring
- electromagnetic interference
- hall voltage
- voltage transducer
- 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.)
- Expired - Lifetime
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- 239000003990 capacitor Substances 0.000 claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 10
- 230000005764 inhibitory process Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 11
- 238000009413 insulation Methods 0.000 abstract description 5
- 230000001629 suppression Effects 0.000 abstract 5
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Abstract
The utility model relates to an electromagnetic interference filter suitable for a high voltage Hall voltage sensor. The filter comprises a common mode filter inductor L1, a common mode suppression capacitor C1, a common mode suppression capacitor C2, and a differential mode suppression capacitor C3, wherein the common mode suppression capacitors C1 and C2 are disposed between the sampling signal input-output loop and a cabinet case, and the differential mode suppression capacitor C3 is disposed among sampling signals. The common mode filter inductor L1 comprises a buckle magnet ring and a coiling disposed on a circuit board. The coiling passes through an axial hollow part in the magnet ring axial direction, and winds the magnet ring in the same direction. The filter allows inductance value to be increased and filter effects to be enhanced, and overcomes problems of electrical gaps and insulation between high voltage input cables.
Description
Technical field:
The utility model relates to a kind of filter, more specifically relates to a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer.
Background technology:
In electronic product equipment, conventionally detect voltage with Hall voltage transducer, in order to suppress or the impact of electromagnetic interference signal on analog sampling signal that decay, conventionally secondary at Hall voltage transducer, on the input port of controller, take necessary interference protection measure, in order to tackle harsh electromagnetic interference environment, the application is at the circuit of the elementary increase one-level reply electromagnetic interference of Hall voltage transducer, so that after interference signal is secondary by Hall voltage transducer, can be by the filter attenuation of controller input port to minimum, thereby the anti-electromagnetic interference performance of lifting controller.
The volume of high pressure Hall voltage transducer is all larger, is generally arranged on the structural member of current transformer or rack.For realizing good filter effect, need to add electromagnetic interference (EMI) filter in high pressure Hall voltage transducer primary side, if the common mode inductance in filter is made by the mode of conventional cores coiling, between solution High-Voltage Insulation and small size, contradiction seems comparatively difficult.
The application's technical scheme is to make the common mode filtering inductance of high voltage by button magnet ring, due to the wire diameter problem of high voltage cable, want to increase the inductance value of filter inductance, need on magnet ring, increase number of turns, so just need the magnet ring of more volume, along with its weight of increase of volume is also increasing, make troubles to installation.If want better filter effect, often need to increase filter input, the electric capacity of output line to casing, the electric capacity between input line, output line, and the more fugitive fruit of this connecting line is better.This realizes very difficult on the structural member of current transformer or rack.
The application, in conjunction with what time above, utilizes button magnet ring on printed wiring board, to make a kind of novel anti-emi filter, and is applicable to use the occasion of high pressure Hall voltage transducer.
Utility model content:
The purpose of this utility model is to provide a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer, and this filter increases its inductance value, strengthens filter effect, has solved the problem such as electric clearance, insulation between high input voltage cable.
For achieving the above object, the utility model is by the following technical solutions: a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer, and described filter comprises that common mode filtering inductance L 1, sampled signal input and output loop suppress capacitor C 3 to the differential mode between common mode inhibition capacitor C 1, C2 and the sampled signal of casing; Described common mode filtering inductance L 1 comprises button magnet ring and being arranged on the coiling on the printed wiring board in intermediate layer, and described coiling is along described magnet ring axis direction through its hollow parts being axially arranged with and according to identical direction, described magnet ring is wound the line.
A kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer that the utility model provides, described printed wiring board is undercut shape plate; Described button magnet ring is the cuboid that is arranged on described printed wiring board recess top, and its axial direction is provided with cylinder type hollow body.
A kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer that the utility model provides, described printed wiring board is provided with two input terminals, an earth terminal, a fixed installation hole and two lead-out terminals; Described two input terminals can plug.
Another preferred a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer that the utility model provides, described input terminal connects sampling cable, and described lead-out terminal is directly connected to the input of Hall voltage transducer.
The preferred a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer again that the utility model provides, the earth connection that described earth terminal is provided with is by being arranged on the bolt ground connection of described printed wiring board below.
Another preferred a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer that the utility model provides, described printed wiring board is the multi-layer sheet with two intermediate layers, and its top layer and bottom are not provided with coiling, and its intermediate layer is provided with coiling.
Another preferred a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer that the utility model provides, described fixed installation hole is fixed described printed wiring board by bolt.
Another preferred a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer that the utility model provides, described input terminal perpendicular to described button magnet ring axis, be symmetricly set on a side of printed wiring board; Described lead-out terminal is parallel to described button magnet ring axis, is symmetricly set on described printed wiring board top; Described earth terminal and fixed installation hole are separately positioned on a side of described printed wiring board recess.
Another preferred a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer that the utility model provides, the differential mode being provided with between symmetrically arranged described lead-out terminal between described common mode inhibition capacitor C 1, C2 and sampled signal suppresses capacitor C 3.
With immediate prior art ratio, the utility model provides technical scheme to have following excellent effect
1, the circuit of filter of the present utility model is simple, practical;
2, filter construction of the present utility model is small and exquisite, easy for installation;
3, the printed wiring board in the utility model utilizes intermediate layer hierarchical design inductor loop, has effectively solved the insulation between insulation and coil and the magnetic core between inductance coil;
4, the utility model utilizes on printed wiring board and winds the line, and can utilize less space to realize higher inductance value;
5, the output line in the utility model is directly installed on by printed wiring board pad on the input terminal of Hall voltage transducer, has reduced greatly due to the impact of lead-in wire on filter effect;
6. the earth connection in the utility model can be realized nearby by bolt below board, shortens chassics earth line loop, boostfiltering effect;
7, add this electromagnetic interference (EMI) filter in Hall voltage transducer primary side, can effectively suppress electromagnetic interference; Make power electronic equipment under harsh operational environment, the anti-electromagnetic interference performance of lifting controller sample circuit.
Brief description of the drawings
Fig. 1 is the utility model filter circuit schematic diagram;
Fig. 2 is the utility model overall filter structural representation;
Fig. 3 is filter printed wiring board schematic diagram;
Wherein, 1-button magnet ring, 2-earth terminal, 3-input terminal, 4-lead-out terminal, 5-printed wiring board, 6-fixedly mounts hole.
Embodiment
Below in conjunction with embodiment, utility model is described in further detail.
Embodiment 1:
As shown in figure Fig. 1-Fig. 3, a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer of this routine utility model comprises that common mode filtering inductance L 1, sampled signal input and output loop suppress capacitor C 3 to the differential mode between common mode inhibition capacitor C 1, C2 and the sampled signal of casing; Described common mode filtering inductance L 1 comprises button magnet ring 1 and is arranged on the coiling on printed wiring board 5, and described coiling is along described button magnet ring 1 axis direction through its axial hollow parts and according to identical direction, described button magnet ring 1 is wound the line.
Described overall filter realizes on printed wiring board 5, and described printed wiring board 5 is undercut shape plate; Described button magnet ring 1 is for being arranged on the cuboid of described printed wiring board 5 recess tops, and its axial direction is provided with cylinder type hollow body.
Described printed wiring board 5 is provided with two input terminals 3, earth terminal 2, fixed installation hole 6 and two lead-out terminals 4.The sample line of Hall voltage transducer adopts high voltage cable, described input terminal 3 connects sampling cable, after sampled signal is input in printed wiring board 5 after filtering, export by lead-out terminal 4, described lead-out terminal 4 is directly installed on the input of Hall voltage transducer, plays electrical connection and fixing effect simultaneously.The earth connection that described earth terminal 2 is provided with, by being arranged on the bolt ground connection of described printed wiring board 5 belows, playing electrical connection simultaneously and fixing effect is installed; Described fixed installation hole 6 by fixing described printed wiring board 5, has fixed installation effect by bolt.
Described input terminal 3 perpendicular to described button magnet ring 1 axis, be symmetricly set on a side of printed wiring board 5; Described lead-out terminal 4 is parallel to described button magnet ring 1 axis, is symmetricly set on described printed wiring board 5 tops; Described earth terminal 2 and fixed installation hole 6 are separately positioned on a side of described printed wiring board 5 recesses; Described input terminal 3 can plug.
The differential mode that 4 of symmetrically arranged described lead-out terminals are provided with between described common mode inhibition capacitor C 1, C2 and sampled signal suppresses capacitor C 3, the common mode interference signal of being come in by sampled signal line, can by these two capacitor C 1 and C2 to casing path is provided, realize the effect of common mode filtering; The differential mode interference signal that described capacitor C 3 enters sampled signal absorbs, thereby realizes differential mode filter action by C3.
Described printed wiring board 5 is the multi-layer sheet with two intermediate layers, and its top layer and bottom are not provided with coiling, and its intermediate layer is provided with coiling.
Described button magnet ring 1 when mounted, is buckled in the hollow body of described button magnet ring 1 on described printed wiring board 5, makes the sampled signal of input on printed wiring board 5 by the center order pitch of the laps of magnet ring, to form common mode filtering inductance.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement embodiment of the present utility model, and do not depart from any amendment of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of this claim scope.
Claims (9)
1. be applicable to an Electromagnetic interference filter for high pressure Hall voltage transducer, described filter comprises that common mode filtering inductance L 1, sampled signal input and output loop suppress capacitor C 3 to the differential mode between common mode inhibition capacitor C 1, C2 and the sampled signal of casing; It is characterized in that: described common mode filtering inductance L 1 comprises button magnet ring and being arranged on the coiling on the printed wiring board in intermediate layer, described coiling is along described magnet ring axis direction through its hollow parts being axially arranged with and according to identical direction, described magnet ring is wound the line.
2. a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer as claimed in claim 1, is characterized in that: described printed wiring board is undercut shape plate; Described button magnet ring is the cuboid that is arranged on described printed wiring board recess top, and its axial direction is provided with cylinder type hollow body.
3. a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer as claimed in claim 2, is characterized in that: described printed wiring board is provided with two input terminals, an earth terminal, a fixed installation hole and two lead-out terminals; Described two input terminals can plug.
4. a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer as claimed in claim 3, is characterized in that: described input terminal connects sampling cable, and described lead-out terminal is directly connected to the input of Hall voltage transducer.
5. a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer as claimed in claim 3, is characterized in that: the earth connection that described earth terminal is provided with is by being arranged on the bolt ground connection of described printed wiring board below.
6. a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer as claimed in claim 1, is characterized in that: described printed wiring board is the multi-layer sheet with two intermediate layers, and its top layer and bottom are not provided with coiling, and its intermediate layer is provided with coiling.
7. a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer as claimed in claim 3, is characterized in that: described fixed installation hole is fixed described printed wiring board by bolt.
8. a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer as claimed in claim 3, is characterized in that: described input terminal perpendicular to described button magnet ring axis, be symmetricly set on a side of printed wiring board; Described lead-out terminal is parallel to described button magnet ring axis, is symmetricly set on described printed wiring board top; Described earth terminal and fixed installation hole are separately positioned on a side of described printed wiring board recess.
9. a kind of Electromagnetic interference filter that is applicable to high pressure Hall voltage transducer as claimed in claim 8, is characterized in that: the differential mode being provided with between symmetrically arranged described lead-out terminal between described common mode inhibition capacitor C 1, C2 and sampled signal suppresses capacitor C 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320811521.6U CN203734632U (en) | 2013-12-10 | 2013-12-10 | Electromagnetic interference filter suitable for high voltage Hall voltage sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320811521.6U CN203734632U (en) | 2013-12-10 | 2013-12-10 | Electromagnetic interference filter suitable for high voltage Hall voltage sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203734632U true CN203734632U (en) | 2014-07-23 |
Family
ID=51204672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320811521.6U Expired - Lifetime CN203734632U (en) | 2013-12-10 | 2013-12-10 | Electromagnetic interference filter suitable for high voltage Hall voltage sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203734632U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702234A (en) * | 2013-12-10 | 2015-06-10 | 国家电网公司 | Electromagnetic interference filter applicable to high-voltage Hall sensors |
| EP3926813A1 (en) * | 2020-06-16 | 2021-12-22 | Volvo Car Corporation | Electromagnetic emission rejection filter in hybrid/electric vehicles |
-
2013
- 2013-12-10 CN CN201320811521.6U patent/CN203734632U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702234A (en) * | 2013-12-10 | 2015-06-10 | 国家电网公司 | Electromagnetic interference filter applicable to high-voltage Hall sensors |
| CN104702234B (en) * | 2013-12-10 | 2018-05-29 | 国家电网公司 | A kind of EMI FILTER suitable for high pressure Hall voltage sensor |
| EP3926813A1 (en) * | 2020-06-16 | 2021-12-22 | Volvo Car Corporation | Electromagnetic emission rejection filter in hybrid/electric vehicles |
| US11552556B2 (en) | 2020-06-16 | 2023-01-10 | Volvo Car Corporation | Electromagnetic emission rejection filter in hybrid/electric vehicles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170602 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: China Electric Prime Technology Co., Ltd. Patentee after: State Grid Corporation of China Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: State Grid Smart Grid Institute Patentee before: State Grid Corporation of China Co-patentee before: China Electric Prime Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20180529 |
|
| AV01 | Patent right actively abandoned |