CN203039568U - Power supply harmonic wave and radio frequency interference suppressor - Google Patents
Power supply harmonic wave and radio frequency interference suppressor Download PDFInfo
- Publication number
- CN203039568U CN203039568U CN 201220736754 CN201220736754U CN203039568U CN 203039568 U CN203039568 U CN 203039568U CN 201220736754 CN201220736754 CN 201220736754 CN 201220736754 U CN201220736754 U CN 201220736754U CN 203039568 U CN203039568 U CN 203039568U
- Authority
- CN
- China
- Prior art keywords
- common mode
- inductance
- radio frequency
- common
- mode
- 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 - Fee Related
Links
Abstract
The utility model provides a power supply harmonic wave and radio frequency interference suppressor which comprises a harmonic wave suppression circuit and a radio frequency interference filter circuit which are in series connection. The radio frequency interference filter circuit comprises two levels of common mode filter circuits and a differential mode filter circuit. The radio frequency interference filter circuit is a frequency selectivity two-port network which is formed by an inductor, a capacitor and a resistor, a power frequency signal is not attenuated, and the radio frequency interference is attenuated. The power supply harmonic wave and radio frequency interference suppressor provided by the utility model has the advantages that a power supply harmonic wave problem is solved, and the influence of a power supply brought by radio frequency interference is suppressed; in addition, the power supply harmonic wave and radio frequency interference suppressor is formed by passive components, and so the reliability is high; at the same time, the suppressor is effective equipment for improving a power factor of the power supply and is a green product with power supply purification and energy saving.
Description
Technical field
The utility model relates to control device, particularly a kind of supply harmonic and radio frequency interference inhibitor.
Background technology
Along with developing rapidly of electric power, electronic technology, electromagnetic interference environment is on the rise, and it is the universal method that solves Conducted Electromagnetic Interference that supply harmonic and radio frequency interference suppress.Now, the method that solves supply harmonic adopts active filter (PFC) more, but have is, the source filter cost is very high, and reliability is relatively poor, and this effective solution to supply harmonic and radio frequency interference inhibition has brought new problem.
The utility model content
The purpose of this utility model is exactly the above-mentioned defective that will overcome prior art, a kind of supply harmonic and radio frequency interference inhibitor are provided, the reliability height, not only can solve the supply harmonic problem, also can suppress the influence that radio frequency interference is brought to power supply, can also improve simultaneously the power factor of power supply, reach not only power conditioner but also realize energy-conservation.
For achieving the above object, the supply harmonic that the utility model provides and radio frequency interference inhibitor, the harmonic wave that comprises mutual series connection suppresses circuit and the dried filter circuit of radio frequency, and the dried filter circuit of described radio frequency comprises two-stage common mode filtering circuit and one-level differential mode filter circuit, wherein:
Described harmonic wave suppresses circuit and comprises inductance L 1, capacitor C 1, inductance L 2 and capacitor C 2, after described inductance L 1 and described capacitor C 1 are parallel with one another, the one end links to each other with the power input live wire, the other end is the output that harmonic wave suppresses circuit, described inductance L 2 is with after described capacitor C 2 is connected mutually, the one end links to each other with the output that described harmonic wave suppresses circuit, and the other end links to each other with the power input zero line;
The first common mode filtering circuit comprises two common mode inductances and two common mode capacitance, the output of described harmonic wave inhibition circuit is connected to the end of the first common mode inductance L3, the other end of the first common mode inductance L3 links to each other with the end of the first common mode capacitance Cy1, the power input zero line is connected to the end of the second common mode inductance L3 ＇, the other end of the second common mode inductance L3 ＇ links to each other with the end of the second common mode capacitance Cy1 ＇, the other end of two common mode capacitance is connected mutually, the node of series connection links to each other with the power input ground wire, and two common mode capacitance after the series connection constitute the first common-mode signal output;
The second common mode filtering circuit comprises two common mode inductances and two common mode capacitance, its structure is identical with the first common mode filtering circuit, the first common-mode signal output is connected to the end of the 3rd common mode inductance L4 and the end of the 4th common mode inductance L4 ＇ respectively, the other end of the 3rd common mode inductance L4 links to each other with the end of the 3rd common mode capacitance Cy2, the other end of the 4th common mode inductance L4 ＇ links to each other with the end of the 4th common mode capacitance Cy1 ＇, the other end of two common mode capacitance is connected mutually, the node of series connection links to each other with the power input ground wire, and two common mode capacitance after the series connection constitute the second common-mode signal output;
Described differential mode filter circuit comprises two differential mode inductances and two differential mode capacitors, wherein, the two ends of the first differential mode capacitor Cx are in parallel with the input of the described first common mode filtering circuit, the first differential mode inductance L5 series connection is between the node of the 3rd common mode inductance L4 and the 3rd common mode capacitance Cy2, the second differential mode inductance L6 series connection is between the node of the 4th common mode inductance L4 ＇ and the 4th common mode capacitance Cy2 ＇, the described first differential mode capacitor Cx is connected in parallel between the described second common-mode signal output, and the described second differential mode capacitor Cx ＇ constitutes power output end live wire and zero line.
The utility model supply harmonic and radio frequency interference inhibitor, the wherein said first common-mode signal output also is connected with: discharge resistance R.
Advantage and the good effect of the utility model supply harmonic and radio frequency interference inhibitor are: suppress circuit and the dried filter circuit of radio frequency owing to be provided with harmonic wave, not only solved the supply harmonic problem, also suppressed the influence that radio frequency interference is brought to power supply, suppressed the harmonic wave that various power supplys produce, total harmonic wave is less than 30%, power factor is 0.97, energy-conservation 20%.Radio frequency interference that simultaneously can filtering 10KHZ-30MHZ power supply.In addition, supply harmonic and radio frequency interference inhibitor are made up of passive device, so reliability is higher, are again the effective equipment that improves the power factor of power supply, are the green products that can power conditioner can save energy again.
Be elaborated with reference to accompanying drawing below in conjunction with embodiment.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model supply harmonic and radio frequency interference inhibitor.
Embodiment
Describe the embodiment of the utility model supply harmonic and radio frequency interference inhibitor in detail below in conjunction with accompanying drawing.
The supply harmonic that the utility model provides and radio frequency interference inhibitor comprise that the harmonic wave of mutual series connection suppresses circuit and the dried filter circuit of radio frequency, and the dried filter circuit of radio frequency comprises two-stage common mode filtering circuit and one-level differential mode filter circuit.
With reference to Fig. 1, harmonic wave suppresses circuit and comprises inductance L 1, capacitor C 1, inductance L 2 and capacitor C 2.After inductance L 1 and capacitor C 1 are parallel with one another, the one end links to each other with power input live wire L, and the other end is the output that harmonic wave suppresses circuit, after inductance L 2 and capacitor C 2 mutual the series connection, the one end links to each other with the output that harmonic wave suppresses circuit, and the other end links to each other with power input zero line N.
The first common mode filtering circuit comprises two common mode inductance L3, L3 ＇ and two common mode capacitance Cy1, Cy1 ＇, the output of harmonic wave inhibition circuit is connected to the end of the first common mode inductance L3, the other end of the first common mode inductance L3 links to each other with the end of the first common mode capacitance Cy1, power input zero line N is connected to the end of the second common mode inductance L3 ＇, the other end of the second common mode inductance L3 ＇ links to each other with the end of the second common mode capacitance Cy1 ＇, two common mode capacitance Cy1, the other end of Cy1 ＇ is connected mutually, the node of series connection links to each other two common mode capacitance Cy1 after the series connection with power input ground wire G, Cy1 ＇ constitutes the first common-mode signal output.
The second common mode filtering circuit comprises two common mode inductance L4, L4 ＇, two common mode capacitance Cy2, Cy2 ＇, its structure is identical with the first common mode filtering circuit, the first common-mode signal output is connected to the end of the 3rd common mode inductance L4 and the end of the 4th common mode inductance L4 ＇ respectively, the other end of the 3rd common mode inductance L4 links to each other with the end of the 3rd common mode capacitance Cy2, the other end of the 4th common mode inductance L4 ＇ links to each other with the end of the 4th common mode capacitance Cy1 ＇, two common mode capacitance Cy2, the other end of Cy2 ＇ is connected mutually, the node of series connection links to each other two common mode capacitance Cy2 after the series connection with power input ground wire G, Cy2 ＇ constitutes the second common-mode signal output.
The differential mode filter circuit comprises two differential mode inductance L5, L6, two differential mode capacitor Cx, Cx ＇, wherein, the two ends of the first differential mode capacitor Cx are in parallel with the input of the first common mode filtering circuit, the first differential mode inductance L5 series connection is between the node of the 3rd common mode inductance L4 and the 3rd common mode capacitance Cy2, the second differential mode inductance L6 series connection is between the node of the 4th common mode inductance L4 ＇ and the 4th common mode capacitance Cy2 ＇, the first differential mode capacitor Cx is connected in parallel between the second common-mode signal output, and the second differential mode capacitor Cx ＇ constitutes power output end live wire L ＇ and zero line N ＇.
In other embodiment of the utility model supply harmonic and radio frequency interference inhibitor, the first common-mode signal output also is connected with: discharge resistance R.
In the embodiment of the utility model supply harmonic and radio frequency interference inhibitor, harmonic wave suppresses circuit, according to series connection and the principle of parallel of inductance capacitance, for the inductance capacitance parallel circuits, when resonance frequency can present very high impedance during for harmonic frequency; For the inductance capacitance series circuit, when resonance frequency can present very low impedance during for harmonic frequency.Suppress the harmonic wave that power supply produces thus.
The radio frequency interference filter circuit is the frequency selectivity two-port network that is made of inductance, electric capacity, resistance device, and is undamped to the power supply power frequency component, and radio frequency interference is had very high attenuation, to reach the effect that suppresses radio frequency interference.
The utility model supply harmonic and radio frequency interference inhibitor have been used for certain military power-supply device, have passed through CE101 and CE102 test in the GJB151A standard, and it inserts loss be (ambient temperature-55 ℃ extremely+85 ℃):
Inhibition is:
1 suppresses the harmonic wave that various power supplys produce, and total harmonic wave (THD) is less than 30%, and power factor is 0.97.Energy-conservation 20%.
The radio frequency interference of 2 filtering 10KHZ-30MHZ power supplys.
3 mean free error time were greater than 100,000 hours.
Embodiment recited above is described preferred implementation of the present utility model, is not that design of the present utility model and scope are limited.Under the prerequisite that does not break away from the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection range of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.
Claims (2)
1. a supply harmonic and radio frequency interference inhibitor, it is characterized in that: the harmonic wave that comprises mutual series connection suppresses circuit and the dried filter circuit of radio frequency, and the dried filter circuit of described radio frequency comprises two-stage common mode filtering circuit and one-level differential mode filter circuit, wherein:
Described harmonic wave suppresses circuit and comprises inductance L 1, capacitor C 1, inductance L 2 and capacitor C 2, after described inductance L 1 and described capacitor C 1 are parallel with one another, the one end links to each other with power input live wire (L), the other end is the output that harmonic wave suppresses circuit, described inductance L 2 is with after described capacitor C 2 is connected mutually, the one end links to each other with the output that described harmonic wave suppresses circuit, and the other end links to each other with power input zero line (N);
The first common mode filtering circuit comprises two common mode inductances and two common mode capacitance, the output of described harmonic wave inhibition circuit is connected to the end of the first common mode inductance L3, the other end of the first common mode inductance L3 links to each other with the end of the first common mode capacitance Cy1, power input zero line (N) is connected to the end of the second common mode inductance L3 ＇, the other end of the second common mode inductance L3 ＇ links to each other with the end of the second common mode capacitance Cy1 ＇, the other end of two common mode capacitance is connected mutually, the node of series connection links to each other with power input ground wire (G), and two common mode capacitance after the series connection constitute the first common-mode signal output;
The second common mode filtering circuit comprises two common mode inductances and two common mode capacitance, its structure is identical with the first common mode filtering circuit, the first common-mode signal output is connected to the end of the 3rd common mode inductance L4 and the end of the 4th common mode inductance L4 ＇ respectively, the other end of the 3rd common mode inductance L4 links to each other with the end of the 3rd common mode capacitance Cy2, the other end of the 4th common mode inductance L4 ＇ links to each other with the end of the 4th common mode capacitance Cy1 ＇, the other end of two common mode capacitance is connected mutually, the node of series connection links to each other with power input ground wire (G), and two common mode capacitance after the series connection constitute the second common-mode signal output;
Described differential mode filter circuit comprises two differential mode inductances and two differential mode capacitors, wherein, the two ends of the first differential mode capacitor Cx are in parallel with the input of the described first common mode filtering circuit, the first differential mode inductance L5 series connection is between the node of the 3rd common mode inductance L4 and the 3rd common mode capacitance Cy2, the second differential mode inductance L6 series connection is between the node of the 4th common mode inductance L4 ＇ and the 4th common mode capacitance Cy2 ＇, the described first differential mode capacitor Cx is connected in parallel between the described second common-mode signal output, and the described second differential mode capacitor Cx ＇ constitutes power output end live wire (L ＇) and zero line (N ＇).
2. supply harmonic according to claim 1 and radio frequency interference inhibitor, it is characterized in that: the wherein said first common-mode signal output also is connected with discharge resistance R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736754 CN203039568U (en) | 2012-12-27 | 2012-12-27 | Power supply harmonic wave and radio frequency interference suppressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736754 CN203039568U (en) | 2012-12-27 | 2012-12-27 | Power supply harmonic wave and radio frequency interference suppressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039568U true CN203039568U (en) | 2013-07-03 |
Family
ID=48691653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220736754 Expired - Fee Related CN203039568U (en) | 2012-12-27 | 2012-12-27 | Power supply harmonic wave and radio frequency interference suppressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039568U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743334A (en) * | 2016-03-29 | 2016-07-06 | 上海中科深江电动车辆有限公司 | Filtering circuit of low-voltage power supply loop |
| CN107276377A (en) * | 2017-06-06 | 2017-10-20 | 李瑞峰 | A kind of power-supply filter device |
| CN107395538A (en) * | 2017-08-01 | 2017-11-24 | 厦门大学 | A kind of digital pre-distortion system and method for frequency selectivity harmonics restraint |
| CN108336898A (en) * | 2018-04-11 | 2018-07-27 | 四川升华电源科技有限公司 | Brick filter module and power supply module |
| CN108649789A (en) * | 2018-05-29 | 2018-10-12 | 北京北广科技股份有限公司 | Radio-frequency power supply resistance to crosstalk method and device |
| CN109038584A (en) * | 2018-08-09 | 2018-12-18 | 安徽亚辉电气自动化有限公司 | A kind of voltage transformer triple-frequency harmonics suppressor |
| CN109412404A (en) * | 2018-11-16 | 2019-03-01 | 惠州拓邦电气技术有限公司 | A kind of electric appliance EMC circuit and household electrical appliance |
| CN109450236A (en) * | 2018-12-19 | 2019-03-08 | 中国电子科技集团公司第四十三研究所 | A kind of EMI damping filter circuit and filtering method |
-
2012
- 2012-12-27 CN CN 201220736754 patent/CN203039568U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743334A (en) * | 2016-03-29 | 2016-07-06 | 上海中科深江电动车辆有限公司 | Filtering circuit of low-voltage power supply loop |
| CN107276377A (en) * | 2017-06-06 | 2017-10-20 | 李瑞峰 | A kind of power-supply filter device |
| CN107276377B (en) * | 2017-06-06 | 2019-10-29 | 李瑞峰 | A kind of power-supply filter device |
| CN107395538A (en) * | 2017-08-01 | 2017-11-24 | 厦门大学 | A kind of digital pre-distortion system and method for frequency selectivity harmonics restraint |
| CN107395538B (en) * | 2017-08-01 | 2019-11-19 | 厦门大学 | A kind of digital pre-distortion system and method for frequency selectivity harmonics restraint |
| CN108336898A (en) * | 2018-04-11 | 2018-07-27 | 四川升华电源科技有限公司 | Brick filter module and power supply module |
| CN108649789A (en) * | 2018-05-29 | 2018-10-12 | 北京北广科技股份有限公司 | Radio-frequency power supply resistance to crosstalk method and device |
| CN109038584A (en) * | 2018-08-09 | 2018-12-18 | 安徽亚辉电气自动化有限公司 | A kind of voltage transformer triple-frequency harmonics suppressor |
| CN109412404A (en) * | 2018-11-16 | 2019-03-01 | 惠州拓邦电气技术有限公司 | A kind of electric appliance EMC circuit and household electrical appliance |
| CN109450236A (en) * | 2018-12-19 | 2019-03-08 | 中国电子科技集团公司第四十三研究所 | A kind of EMI damping filter circuit and filtering method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203039568U (en) | Power supply harmonic wave and radio frequency interference suppressor | |
| CN104079165B (en) | A kind of display screen with suppression electromagnetic interference | |
| CN209233717U (en) | A kind of EMC filter circuit | |
| CN202889189U (en) | Direct-current electromagnetic interference filter circuit | |
| CN203387400U (en) | Electrical rapid transient interference eliminator | |
| CN202218200U (en) | Filter circuit | |
| WO2020192329A1 (en) | Adjustment method for home gateway type communication terminal failing to pass conduction interference test | |
| CN102970147B (en) | The power over Ethernet device that electromagnetic radiation is suppressed and method | |
| CN110729978A (en) | High-frequency common mode rejection circuit and electrical apparatus | |
| CN203775019U (en) | Power filter circuit | |
| CN206620108U (en) | A kind of new bandstop filter for filtering out Hz noise | |
| CN202996476U (en) | Stacked staggered winding based planar EMI (electro-magnetic interference) filter | |
| EP4243283A1 (en) | Filter circuit | |
| CN204652715U (en) | A kind of LED drive power of Electro Magnetic Compatibility | |
| CN103607106B (en) | A kind of isolated DC power filtering module and method | |
| CN203660535U (en) | Hybrid passive power filter | |
| CN207652041U (en) | High current is without magnetic core EMC filters | |
| CN105490657A (en) | A high-power band-pass filter | |
| CN203826187U (en) | Novel combined transformer for high voltage test | |
| CN110830084B (en) | Phase coupling driving circuit of power line carrier communication system | |
| CN103595049B (en) | Single-tuning power grid low-frequency inter-harmonic passive power filter | |
| CN216290719U (en) | Power module with self-checking control function | |
| CN203607850U (en) | Single-tuning power grid low-frequency inter-harmonic passive power filter | |
| CN203912299U (en) | Novel electronic ballast | |
| CN202586883U (en) | Capacitance-resistance filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20131227 |