CN101489343B - Multi-inductor combined electrical power EMI filter - Google Patents
Multi-inductor combined electrical power EMI filter Download PDFInfo
- Publication number
- CN101489343B CN101489343B CN2009100050315A CN200910005031A CN101489343B CN 101489343 B CN101489343 B CN 101489343B CN 2009100050315 A CN2009100050315 A CN 2009100050315A CN 200910005031 A CN200910005031 A CN 200910005031A CN 101489343 B CN101489343 B CN 101489343B
- Authority
- CN
- China
- Prior art keywords
- filter coil
- filter
- coil section
- coil segment
- filtering coil
- 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
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/2806—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without electrodes in the vessel, e.g. surface discharge lamps, electrodeless discharge lamps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Landscapes
- Filters And Equalizers (AREA)
Abstract
The present invention relates to a multistage inductor combination type power source EMI wave filter which is used on a high-frequency electronic transducer of large power electrodeless fluorescent lamp. The invention is characterized by comprising a first filtering coil segment, a second filtering coil segment, a third filtering coil segment and a fourth filtering coil segment. The first filtering coil segment is provided with a first filtering coil output interface and a first filtering coil segment output interface. The second filtering coil segment is provided with a second filtering coil output interface and a second filtering coil segment output interface. The third filtering coil segment is provided with a third filtering coil input interface and a third filtering coil segment output interface. The fourth filtering coil segment is provided with a fourth filtering coil input interface and a fourth filtering coil segment output interface. The second filtering coil segment is composed through serial-connecting at least two filtering coil segment units. The fourth filtering coil segment is composed of at least two fourth filtering coil segment units. Furthermore the second filtering coil segment units and the fourth filtering coil segment units have one-to-one correspondence. The product of the invention can effectively reduce the electromagnetic interference.
Description
Technical field
The present invention relates to the multi-inductor combined electrical power EMI filter that uses on a kind of high-power electrodeless florescent lamp frequency electronic frequency changer of high.
Background technology
Existing high-power electrodeless florescent lamp frequency electronic frequency changer of high is a kind of form in the switching power converters, the kit that must use when being high-power electrodeless florescent lamp work.The improvement of Along with people's living standard is to the also corresponding raising of the instructions for use of high-power electrodeless florescent lamp.Existing high-power electrodeless florescent lamp frequency electronic frequency changer of high can produce electromagnetic interference when working, and this interference gets into electrical network through power line and forms conducted interference, simultaneously the space is produced radiated interference.Existing fluorescent lamp high frequency frequency-variable electronic device is paid close attention to electric network influencing; Like the drive unit of No. 91106529.6 disclosed a kind of high-frequency electronic fluorescent lamps of Chinese invention patent application, this drive unit is provided with shell and is installed in and removes interfered circuit, current rectifying and wave filtering circuit, switch frequency conversion output circuit in the shell.Be characterized in having set up a multivibrator and an accessory power supply; The feedback signal that replaces load resonant circuit generation in the past with the high frequency ac signal of its generation; Eliminated the harmful effect of load variations, removed the indispensable leakage inductance of existing electric ballast the switch high-frequency output circuit.But electrodeless florescent lamp belongs to emerging product, and operation principle and existing fluorescent lamp are distinct; That is that all right is ripe for corresponding matching component; Therefore country has formulated a series of limit of interference standard, and in order to meet the standard of country, the technical staff has carried out a large amount of effort; The interference that the discovery electrodeless florescent lamp forms electrical network mainly comes from the interference of frequency electronic frequency changer of high medium-high frequency self-excitation resonant network, and the interference that has solved frequency electronic frequency changer of high just can effectively reduce the electromagnetic interference of electrical network.Therefore be badly in need of providing a kind of multi-inductor combined electrical power EMI filter that can effectively reduce electromagnetic interference.
Summary of the invention
The purpose of this invention is to provide a kind of multi-inductor combined electrical power EMI filter that can effectively reduce electromagnetic interference.
Multi-inductor combined electrical power EMI filter of the present invention; It is characterized in that having the first filter coil section, the second filter coil section, the 3rd filter coil section and the 4th filter coil section; The said first filter coil section has the first filter coil input interface and the first filter coil section output interface; The said second filter coil section has the second filter coil input interface and the second filter coil section output interface; Said the 3rd filter coil section has the 3rd filter coil input interface and the 3rd filter coil section output interface; Said the 4th filter coil section has the 4th filter coil input interface and the 4th filter coil section output interface; The said first filter coil output interface is connected with the second filter coil input interface; Said the 3rd filter coil section output interface is connected with the 4th filter coil input interface, is connected through electric capacity between the said first filter coil input interface and the 3rd filter coil input interface, is connected through electric capacity between the said first filter coil output interface and the 3rd filter coil output interface; Be connected through electric capacity between the said second filter coil input interface and the 4th filter coil input interface; Electric capacity through two series connection between the said second filter coil section output interface and the 4th filter coil section output interface is connected, and has the earth terminal interface between the electric capacity of said two series connection, and the said second filter coil section is made up of two second filter coil segment units series connection at least; Said the 4th filter coil section is made up of two the 4th filter coil segment units at least, and the second filter coil segment unit is corresponding one by one with the 4th filter coil segment unit.
The inductance value of the first filter coil section and the 3rd filter coil section is inductance value 47mH described in the multi-inductor combined electrical power EMI filter of the present invention.
The second filter coil section described in the multi-inductor combined electrical power EMI filter of the present invention is made up of two second filter coil segment unit series connection at least; Said the 4th filter coil section is made up of two the 4th filter coil segment units at least; Be meant that promptly the said second filter coil section can be made up of two or more second filter coil segment unit series connection, said the 4th filter coil section can be made up of two or more the 4th filter coil segment units.As long as the inductance value of said second filter coil section and the 4th filter coil section is 400mH.According to concrete operating position, recommend to adopt the said second filter coil Duan Yousi second filter coil segment unit series connection to constitute, said the 4th filter coil Duan Yousi the 4th filter coil segment unit constitutes.Each filter coil segment unit is with the coiling of 0.31mm enamelled wire, every segment unit inductance value 100mH, and common 400mH is together in series.
Basic mentality of designing of the present invention is following:
When high-power electrodeless florescent lamp frequency-variable electronic device is worked; Fundamental frequency harmonic frequency energy is big; Harmonic band is wide, when using two joint π type filter networks and two common mode filtering coil values to equate, can not effectively suppress conducted interference and radiated interference in the 50KHz-30MHz scope.Therefore the value of the value of the filter first filter coil section L1 of the present invention and the second filter coil section L2 is unequal.The first filter coil section L1 value is about 47mH, and the second filter coil section L2 value is about 400mH.The second filter coil section L2 is divided into the series connection of multistage inductance coil, can makes total inductance reach required inductance value, can reduce distributed capacitance again.Its inductance value changes littler than the variation of single co-mode coil inductance value when variations in temperature.
The first filter coil section L1 and the 3rd filter coil section L1 ', the second filter coil section L2 and the 4th filter coil section L2 ' are that direction is identical, inductance value equates the inductance coil on the same skeleton.When the first filter coil section L1 value in 47mH and the second filter coil section L2 value at 400mH and when being divided into four sections, conducted interference and radiated interference are dropped to below the national regulation limit value.
Compare with aforementioned existing like product, multi-inductor combined electrical power EMI filter of the present invention can effectively reduce electromagnetic interference, and conducted interference and radiated interference are dropped to below the national regulation limit value.
Content of the present invention combines following examples to do explanation further, but content of the present invention is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is the circuit diagram of multi-inductor combined electrical power EMI filter among the embodiment.
Embodiment
As shown in Figure 1; Multi-inductor combined electrical power EMI filter in the present embodiment; It is characterized in that having the first filter coil section 1, the second filter coil section 2, the 3rd filter coil section 3 and the 4th filter coil section 4; The said first filter coil section 1 has the first filter coil input interface and the first filter coil section output interface; The said second filter coil section 2 has the second filter coil input interface and the second filter coil section output interface; Said the 3rd filter coil section 3 has the 3rd filter coil input interface and the 3rd filter coil section output interface; Said the 4th filter coil section 4 has the 4th filter coil input interface and the 4th filter coil section output interface, and the said first filter coil output interface is connected with the second filter coil input interface, and said the 3rd filter coil section output interface is connected with the 4th filter coil input interface; Be connected through electric capacity between the said first filter coil input interface and the 3rd filter coil input interface; Be connected through electric capacity between the said first filter coil output interface and the 3rd filter coil output interface, be connected through electric capacity between the said second filter coil input interface and the 4th filter coil input interface, the electric capacity through two series connection between the said second filter coil section output interface and the 4th filter coil section output interface is connected; Has the earth terminal interface between the electric capacity of said two series connection; The said second filter coil Duan Yousi second filter coil segment unit series connection constitutes, and said the 4th filter coil Duan Yousi the 4th filter coil segment unit constitutes, and the second filter coil segment unit is corresponding one by one with the 4th filter coil segment unit.
The first filter coil section 1 all adopts R10K EE25 magnetic core for the L2 among Fig. 1 and the 4th filter coil section for the L2 ' among Fig. 1 for the L1 ' among Fig. 1, the second filter coil section for the L1 among Fig. 1, the 3rd filter coil section 3 in the present embodiment.The first filter coil section L1 and the 3rd filter coil section L1 ' all use the coiling of 0.31mm enamelled wire, inductance value 47mH.The second filter coil section L2 and the 4th filter coil section L2 ' are divided into four segment units, all adopt the coiling of 0.31mm enamelled wire, every segment unit inductance value 100mH, and common 400mH is together in series.Used electric capacity is noninductive electric capacity in the multi-inductor combined electrical power EMI filter in the present embodiment, C1,0.22 μ F/250Vac, C2, C3 0.33 μ F/250Vac, C4 0.22 μ F/250Vac, C5, C6 3300pF/250Vac.
Claims (2)
1. multi-inductor combined electrical power EMI filter; It is characterized in that having the first filter coil section, the second filter coil section, the 3rd filter coil section and the 4th filter coil section; The said first filter coil section has the first filter coil input interface and the first filter coil section output interface; The said second filter coil section has the second filter coil input interface and the second filter coil section output interface; Said the 3rd filter coil section has the 3rd filter coil input interface and the 3rd filter coil section output interface; Said the 4th filter coil section has the 4th filter coil input interface and the 4th filter coil section output interface; The said first filter coil output interface is connected with the second filter coil input interface; Said the 3rd filter coil section output interface is connected with the 4th filter coil input interface, is connected through electric capacity between the said first filter coil input interface and the 3rd filter coil input interface, is connected through electric capacity between the said first filter coil output interface and the 3rd filter coil output interface; Be connected through electric capacity between the said second filter coil input interface and the 4th filter coil input interface; Electric capacity through two series connection between the said second filter coil section output interface and the 4th filter coil section output interface is connected, and has the earth terminal interface between the electric capacity of said two series connection, and the said second filter coil section is made up of two second filter coil segment units series connection at least; Said the 4th filter coil section is made up of two the 4th filter coil segment unit series connection at least; And the second filter coil segment unit is corresponding one by one with the 4th filter coil segment unit, and the inductance value of said first filter coil section and the 3rd filter coil section is inductance value 47mH, and the inductance value of said second filter coil section and the 4th filter coil section is 400mH.
2. multi-inductor combined electrical power EMI filter as claimed in claim 1 is characterized in that the said second filter coil Duan Yousi second filter coil segment unit series connection constitutes, and said the 4th filter coil Duan Yousi the 4th filter coil segment unit series connection constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100050315A CN101489343B (en) | 2009-01-08 | 2009-01-13 | Multi-inductor combined electrical power EMI filter |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910058071 | 2009-01-08 | ||
| CN200910058071.6 | 2009-01-08 | ||
| CN2009100050315A CN101489343B (en) | 2009-01-08 | 2009-01-13 | Multi-inductor combined electrical power EMI filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101489343A CN101489343A (en) | 2009-07-22 |
| CN101489343B true CN101489343B (en) | 2012-07-04 |
Family
ID=40891949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100050315A Expired - Fee Related CN101489343B (en) | 2009-01-08 | 2009-01-13 | Multi-inductor combined electrical power EMI filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101489343B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951140B (en) * | 2010-08-04 | 2012-11-07 | 王家诚 | EMI (Electro-Magnetic Interference) filter of electrodeless fluorescent lamp with ultracrystalline filter coil CL+CL structure |
| CN105356740B (en) * | 2015-11-27 | 2019-06-28 | 敏业信息科技（上海）有限公司 | Inhibit the electrical energy transformer of structure with electromagnetic interference |
| CN105406736B (en) * | 2015-12-24 | 2018-11-09 | 益阳橡胶塑料机械集团有限公司 | The power circuit and anti-interference method of mixer PLC |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5387850A (en) * | 1992-06-05 | 1995-02-07 | Diablo Research Corporation | Electrodeless discharge lamp containing push-pull class E amplifier |
| CN1184401A (en) * | 1996-12-03 | 1998-06-10 | 电灯专利信托有限公司 | Non-electrode low-voltage discharge lamp operating circuit |
| CN1189083A (en) * | 1997-01-19 | 1998-07-29 | 王肖峰 | Gas discharge lamp electronic ballast |
| CN201341086Y (en) * | 2009-01-08 | 2009-11-04 | 王家诚 | Multistage electric inductance combined type power supply EMI filter |
-
2009
- 2009-01-13 CN CN2009100050315A patent/CN101489343B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5387850A (en) * | 1992-06-05 | 1995-02-07 | Diablo Research Corporation | Electrodeless discharge lamp containing push-pull class E amplifier |
| CN1184401A (en) * | 1996-12-03 | 1998-06-10 | 电灯专利信托有限公司 | Non-electrode low-voltage discharge lamp operating circuit |
| CN1189083A (en) * | 1997-01-19 | 1998-07-29 | 王肖峰 | Gas discharge lamp electronic ballast |
| CN201341086Y (en) * | 2009-01-08 | 2009-11-04 | 王家诚 | Multistage electric inductance combined type power supply EMI filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101489343A (en) | 2009-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209233717U (en) | A kind of EMC filter circuit | |
| Luo et al. | A voltage stress optimization method of capacitive power transfer charging system | |
| CN101860237A (en) | High-power factor constant-current circuit and power source | |
| CN101489343B (en) | Multi-inductor combined electrical power EMI filter | |
| CN110112836A (en) | A kind of magnet coupled resonant type wireless transmission system and control method | |
| CN201341086Y (en) | Multistage electric inductance combined type power supply EMI filter | |
| CN105356740A (en) | Electric energy converter with electromagnetic interference suppression structure | |
| CN203590040U (en) | Power supply circuit and LED street lamp | |
| CN106535447B (en) | The single-stage high-frequency inductor electric ballast and its working method of novel AC/AC (alternating current) variable-frequency | |
| CN101951140B (en) | EMI (Electro-Magnetic Interference) filter of electrodeless fluorescent lamp with ultracrystalline filter coil CL+CL structure | |
| CN107800199A (en) | A kind of electromagnetic interference suppression circuit and electric energy transmitting terminal | |
| CN101621253A (en) | Resonant convertor, DC/DC convertor and switch power supply | |
| CN205646952U (en) | Electric vehicle wireless charging system | |
| CN211018635U (en) | High input impedance L CC compensation structure and wireless power transmission system | |
| CN201263242Y (en) | Circuit device | |
| CN106685237A (en) | Alternating current-direct current isolation type semi-bridge converter matched with three channels of direct current micro-grid | |
| CN201766497U (en) | Electrodeless fluorescent lamp EMI filter of ultracrystalline filtering coil CL+CL structure | |
| CN104935166A (en) | DC-DC power supply device | |
| CN2829177Y (en) | Transformer or loading zero line harmonic suppressor | |
| CN204794699U (en) | DC -DC continuous current plant | |
| CN205160366U (en) | Electric energy converter with electromagnetic interference suppressing structure | |
| CN2532655Y (en) | High-efficient frequency-changing electric heater | |
| CN210351010U (en) | Variable frequency power supply filter | |
| CN203151370U (en) | Control circuit of frequency conversion air compressor | |
| CN201700072U (en) | High-voltage direct current electrodeless lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20180113 |