CN103390891A - Double-pole common mode filter - Google Patents
Double-pole common mode filter Download PDFInfo
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- CN103390891A CN103390891A CN2012101440781A CN201210144078A CN103390891A CN 103390891 A CN103390891 A CN 103390891A CN 2012101440781 A CN2012101440781 A CN 2012101440781A CN 201210144078 A CN201210144078 A CN 201210144078A CN 103390891 A CN103390891 A CN 103390891A
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- common mode
- double
- mode filter
- pole common
- power supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Power Conversion In General (AREA)
Abstract
The invention provides a double-pole common mode filter, and relates to a filter restraining industrial power source harmonic waves. The double-pole common mode filter mainly resolves the problems that in a motor test, as a computer switch power supply and a motor test power supply are connected to the same power grid, a disturbance source is formed, and the computer power supply is burned when the situation is serious. According to the double-pole common mode filter, two sets of windings L1 and L2 of a common mode inductor are connected with two windings L3 and L4 of an unbalanced reactor in series respectively, and the output end of the double-pole common mode filter is connected with a common mode capacitor in parallel. The double-pole common mode filter has the advantages of being resistant to power grid serial-in common mode interference, radiation interference and grounded voltage difference interference. When the double-pole common mode filter is used, the double-pole common mode filter is arranged at the input end of the computer power supply to be used for restraining the high-frequency harmonic waves. The double-pole common mode filter is small in size and convenient to operate. When the double-pole common mode filter is used for protecting the industrial computer power supply, the situation that the computer is burned by the power grid harmonic waves to cause unnecessary loss is avoided.
Description
Technical field
The invention belongs to the filter that suppresses the industrial power harmonic wave, relate to specifically for suppressing industrial power because of the harmonic wave that silicon controlled rectifier, inversion produce, make line voltage bipolar common-mode filter stably.
Background technology
In the ZQF-80KW motor testing process, because computer switching power supply and 80KW motor test power supply are connected on same AC network, when motor carries out overspeed test and hour temperature rise test, silicon controlled rectifier causes the interrupted of input current, this, except greatly reducing input power factor, has also increased a large amount of high order harmonic components.Simultaneously, the action of Switching Power Supply speed-sensitive switch, formed the harassing and wrecking source, burns the industrial computer power supply when serious.If only adopt the switch protection industrial computer,, if be connected in rectification or inversion circuit, can not suppress high order harmonic component on electrical network, do not have anti-harmonic wave effect.
Summary of the invention
The objective of the invention is for above-mentioned deficiency, and a kind of mains by harmonics component that can suppress that proposes makes line voltage steady, plays the effect of safeguard industries computer.
Technical solution of the present invention is that bipolar common-mode filter is that two groups of winding L 1, the L2 of common-mode inductor connects with two winding L 3, L4 of uneven reactor respectively, is parallel with the common mode capacitance device on its output.
Two groups of winding L 1 of the common-mode inductor described in technical solution of the present invention, the number of turn of L2 are identical, single spin-echo.
Uneven reactor described in technical solution of the present invention is that two winding L 3, the L4 on FERRITE CORE adopts the Double-wire parallel wound winding.
Common mode capacitance device described in technical solution of the present invention is composed in series by two capacitor C3, C4, its series connection contact ground connection.
The present invention, according to the electrical network at industrial computer place, measures and calculates the high frequency time harmonic component, selects or makes the common-mode filter that is fit to suppress supply harmonic, is arranged on the computer power supply input, is used for suppressing the high frequency time harmonic wave; At power end, the 6A protector is installed simultaneously, is prevented power supply short circuit.Bipolar common-mode filter of the present invention has anti-electrical network and seals in common mode disturbances, resisting radiation interference, and as common mode input signals such as rectification and inversion, equipment electric arc, thunders and lightnings, and the characteristics such as anti-ground connection pressure reduction interference.Volume of the present invention is small and exquisite, and is easy to operate, uses the present invention to protect the industrial computer power supply, avoided mains by harmonics to burn computer and the unnecessary loss that brings.
Description of drawings
Fig. 1 is schematic diagram of the present invention.
Embodiment
As shown in Figure 1, bipolar common-mode filter of the present invention is comprised of common-mode inductor 2, uneven reactor 3 and common mode capacitance device 4, two winding L 1 of common mode reactor 2, L2 connect with two winding L 3, L4 of uneven reactor 3 respectively, and the output of uneven reactor 3 is in parallel with common mode capacitor 4; Two winding L 1 of common-mode inductor 2, the L2 number of turn are identical, single spin-echo, and the magnetic flux that two winding L 1, L2 are produced is cancelled out each other, and, to making magnetic core be in not bias state, presents a balanced impedance, and this group resists common-mode noise is presented impedance operator; The FERRITE CORE of uneven reactor 3 adopts the nickel Zinc material to make, and two winding L 3 on FERRITE CORE, L4 adopt respectively the Double-wire parallel wound winding, is used for suppressing common mode noise and low differential mode noise signal; Common mode capacitance device 4 is composed in series by two capacitor C3, C4, the series connection contact ground connection of two capacitor C3, C4; On two winding L 1 of common-mode inductor 2, output between L2 and be connected to capacitor C1, on the output between 3 two winding L 3 of uneven reactor, L4 and be connected to capacitor C2; Be connected to the protector 1 of 250V, 6A on input L, the N of bipolar common-mode filter, be used for power source short-circuit protection; During use, output of the present invention is received on the input of industrial power, can be played anti-electrical network series connection common mode disturbances, anti-width blackberry lily is disturbed, and the effect of anti-ground connection pressure reduction interference.
Claims (4)
1. bipolar common-mode filter, it is characterized in that: two groups of winding L 1 of common-mode inductor (2), L2 connect with two winding L 3, L4 of uneven reactor (3) respectively, are parallel with common mode capacitance device (4) on its output.
2. bipolar common-mode filter according to claim 1 is characterized in that: two groups of winding L 1 of described common-mode inductor (2), the number of turn of L2 are identical, single spin-echo.
3. bipolar common-mode filter according to claim 1 is characterized in that: described uneven reactor (3) is that two winding L 3, the L4 on FERRITE CORE adopts the Double-wire parallel wound winding.
4. bipolar common-mode filter according to claim 1, it is characterized in that: described common mode capacitance device (4) is composed in series by two capacitor C3, C4, its series connection contact ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101440781A CN103390891A (en) | 2012-05-11 | 2012-05-11 | Double-pole common mode filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101440781A CN103390891A (en) | 2012-05-11 | 2012-05-11 | Double-pole common mode filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103390891A true CN103390891A (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101440781A Pending CN103390891A (en) | 2012-05-11 | 2012-05-11 | Double-pole common mode filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN103390891A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962583A (en) * | 2017-12-26 | 2019-07-02 | 杭州三花研究院有限公司 | Electrodynamic pump |
| WO2019128310A1 (en) * | 2017-12-26 | 2019-07-04 | 杭州三花研究院有限公司 | Electric pump |
-
2012
- 2012-05-11 CN CN2012101440781A patent/CN103390891A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962583A (en) * | 2017-12-26 | 2019-07-02 | 杭州三花研究院有限公司 | Electrodynamic pump |
| WO2019128310A1 (en) * | 2017-12-26 | 2019-07-04 | 杭州三花研究院有限公司 | Electric pump |
| US11742728B2 (en) | 2017-12-26 | 2023-08-29 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electric pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131113 |