CN2854917Y - Device for reducing surge and higher harmonic - Google Patents
Device for reducing surge and higher harmonic Download PDFInfo
- Publication number
- CN2854917Y CN2854917Y CNU2005201237345U CN200520123734U CN2854917Y CN 2854917 Y CN2854917 Y CN 2854917Y CN U2005201237345 U CNU2005201237345 U CN U2005201237345U CN 200520123734 U CN200520123734 U CN 200520123734U CN 2854917 Y CN2854917 Y CN 2854917Y
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- CN
- China
- Prior art keywords
- circuit
- filter circuit
- phase
- surge
- inductance
- 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
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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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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model belongs to a device applied in electric equipment field for suppressing surge and higher harmonic. The device comprises a three-phase filter circuit; filter circuit between each two phases is a Pi-shaped circuit provide with an inductance and two capacitors; and three such circuits constitute the three-phase filter circuit. The device is characterized in that a varistor is parallel-connected between each two phases. Compared with existing circuits, the device has strong reflectivity to high-frequency signal, so as to transfer high-frequency energy between power supply and this device without influencing load circuit.
Description
Technical field
The utility model belongs to the power consumption equipment field.
Background technology
This device is primarily aimed at the high order harmonic component that produces in the AC and DC governing system and power circuit overvoltage surge and specialized designs.This high order harmonic component and overvoltage surge can cause damage to power consumption equipment.
Summary of the invention
The purpose of this utility model is with electronic component high order harmonic component in the circuit and spike to be decayed, absorb, in order to purify power utilization environment, the protection power consumption equipment.Can significantly improve power factor behind AC and DC governing system, this device of Soft Starting System adapted, reduce reactive power, reach energy saving purposes.
The purpose of this utility model is achieved in that the device that suppresses surge and high order harmonic component, comprise a three-phase filter circuit, filter circuit between every two-phase is formed a Л shape circuit by an inductance, two electric capacity, forms the three-phase filter circuit by the such circuit of three covers; It is characterized in that: piezo-resistance also in parallel between every two-phase.
This device is a kind of passive network.Inductance in the circuit adopts the Ni-Zn Ferrite Material to do iron core, and this kind material has good frequency characteristic, and more than cut-off frequency, material has good absorption characteristic.Inductance with this kind material is made allows signal pass through when low frequency, can effectively decay to signal when high frequency.Electric capacity in the circuit adopts the high frequency surging to absorb electric capacity, to increase the decay to high-frequency signal.Because this circuit input impedance and external impedance are unequal, utilize the impedance mismatching principle, will produce reflection to high-frequency signal, stop it to enter load circuit, thereby reach the purpose that suppresses high order harmonic component.The effect of piezo-resistance RY in the circuit is with the decay of the surge voltage in the circuit, absorbs.The circuit of Zu Chenging high order harmonic component and the spike on the decaying power supplies line to greatest extent thus makes that the rugged change of output current wave is less.
Compare with circuit in the past, this apparatus features is strong to the reflex of high-frequency signal, high-frequency energy is transmitted between power supply and this device, and do not influence load circuit.Next is that filtered band is wide.
This device is widely used in the low voltage control system such as frequency converter, soft initiator, direct current speeder, effectively suppresses, eliminates electrical network overvoltage surge and high order harmonic component.
Circuit theory is as follows: when the frequency of electric current is very high, induction reactance ω L becomes very big on the one hand, capacitive reactance 1/ ω C is but very little on the other hand, a very big pressure drop is arranged on the inductance L, capacitor C again almost after connect load short circuits, so, although the electromotive force of power supply remain unchanged, the pressure drop at load two ends also approaches zero.
Description of drawings
Fig. 1 is the utility model structural representation; Wherein: L1, L2, L3 are inductance, and C1, C2, C3, C4, C5, C6 are electric capacity, and RY1, RY2, RY3 are piezo-resistances.
Embodiment
With reference to the accompanying drawings the utility model is further described: referring to accompanying drawing 1, the device that suppresses surge and high order harmonic component, comprise a three-phase filter circuit, filter circuit between every two-phase is formed a Л shape circuit by an inductance, two electric capacity, forms the three-phase filter circuit by the such circuit of three covers; Piezo-resistance also in parallel between every two-phase.
Claims (2)
1, suppress the device of surge and high order harmonic component, comprise a three-phase filter circuit, the filter circuit between every two-phase is formed a Л shape circuit by an inductance, two electric capacity, forms the three-phase filter circuit by the such circuit of three covers; It is characterized in that: piezo-resistance also in parallel between every two-phase.
2, the device of inhibition surge according to claim 1 and high order harmonic component is characterized in that: described inductance adopts the Ni-Zn Ferrite Material to do iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201237345U CN2854917Y (en) | 2005-12-02 | 2005-12-02 | Device for reducing surge and higher harmonic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201237345U CN2854917Y (en) | 2005-12-02 | 2005-12-02 | Device for reducing surge and higher harmonic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2854917Y true CN2854917Y (en) | 2007-01-03 |
Family
ID=37581554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201237345U Expired - Fee Related CN2854917Y (en) | 2005-12-02 | 2005-12-02 | Device for reducing surge and higher harmonic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2854917Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764525A (en) * | 2010-02-11 | 2010-06-30 | 哈尔滨工业大学（威海） | Vector transducer with low electromagnetic interference |
| CN103427698A (en) * | 2012-05-14 | 2013-12-04 | 海洋王照明科技股份有限公司 | Frequency changer circuit |
| CN103516183A (en) * | 2013-09-30 | 2014-01-15 | 无锡洲翔成套焊接设备有限公司 | Spraying power supply three-phase filter |
-
2005
- 2005-12-02 CN CNU2005201237345U patent/CN2854917Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764525A (en) * | 2010-02-11 | 2010-06-30 | 哈尔滨工业大学（威海） | Vector transducer with low electromagnetic interference |
| CN101764525B (en) * | 2010-02-11 | 2013-11-20 | 哈尔滨工业大学（威海） | Vector transducer with low electromagnetic interference |
| CN103427698A (en) * | 2012-05-14 | 2013-12-04 | 海洋王照明科技股份有限公司 | Frequency changer circuit |
| CN103516183A (en) * | 2013-09-30 | 2014-01-15 | 无锡洲翔成套焊接设备有限公司 | Spraying power supply three-phase filter |
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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: 20070103 Termination date: 20100104 |