CN100429855C - Power supply wave shape correcting filter - Google Patents
Power supply wave shape correcting filter Download PDFInfo
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- CN100429855C CN100429855C CNB2005100295598A CN200510029559A CN100429855C CN 100429855 C CN100429855 C CN 100429855C CN B2005100295598 A CNB2005100295598 A CN B2005100295598A CN 200510029559 A CN200510029559 A CN 200510029559A CN 100429855 C CN100429855 C CN 100429855C
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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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Abstract
This invention discloses a filter for correcting supply waveforms including a parallel non-linear resistor and a first capacitor, a first inductor and a second inductor with coils of the same turns winded on a same magnetic core reversely, a second capacitor and a third and fourth capacitors in series, in which, the two input ends of the two inductors are connected to both ends of the first capacitor, the second capacitor is bridged between the outputs of the first two inductors, the serial ends of the third and the fourth capacitors are bridged between the outputs of the first two inductors to be parallel to the second capacitor, the connecting point of the third and fourth capacitors is connected to the earth, the filter also includes a first resistor connected between the output of the first inductor and the input of the second inductor and said core is a nano-grain alloy ring one.
Description
Technical field
The present invention relates to a kind of power-supply filter of correcting and absorbing electric network pollution, relate in particular to rectification and absorption power supply wave shape correcting filter clutters such as damaging high order harmonic component, surge (surge), spiking in the electrical network.
Background technology
A large amount of uses along with various advanced persons' instrument and equipment can cause the pollution of various pollutions and interference, particularly electrical network.Some equipment can produce electric network pollution usually, and some equipment then often is subjected to the influence of electric network pollution.
As illustrated in fig. 1 and 2, Fig. 1 is normal mains by harmonics, and Fig. 2 is contaminated mains by harmonics.
Electric network pollution mainly is meant high order harmonic component, wink stream, surge, high-frequency noise etc.These components directly produce harm to subscriber equipment.High order harmonic component is 9: 1 to the harmfulness of equipment and low-order harmonic to the ratio of the harmfulness of equipment.As Switching Power Supply, there is rectifying part inside, and operating frequency is all more than tens of kHz.During Switching Power Supply work, make the above high fdrequency component of tens of kHz that superposeed on the electrical network.Waveform to electrical network during these loaded work pieces cuts, and causes waveform seriously to distort; Simple switch motion of fluorescent tube just has the miscarriage of 24 wink to give birth to, and voltage is up to 1200V.Work under 200,000 times/hour states of the frequency takes place at " wink stream " in standard device, and the electronic equipment life-span can shorten 40%, and the motor device life-span can shorten 30%; The lighting apparatus life-span can shorten 35%～45%.
Electric network pollution may make the equipment cisco unity malfunction, easily makes mistakes.Equipment of today has adopted microelectric technique mostly, and these equipment are a kind of nonlinear loads, as: Digit Control Machine Tool, mica wrappingmachine, convertible frequency air-conditioner, computer, electron rectifier, variable-frequency motor, electricity-saving lamp, controllable silicon load.This nonlinear load is had relatively high expectations to the quality of power supply, and itself can pollute electrical network again.If electric network pollution is not administered, will cause as the rate decline that manufactures a finished product, machine malfunction, equipment failure rate height, the rising of machine operation temperature, energy consumption increase, power factor reduction, the quickening of the machine components rate of wear, shortened equipment life, control system down when serious, can't start shooting, a series of problems such as communication disruption, even can breaking out of fire.
Higher Harmonics in Electric Power Network can produce eddy current and cause hysteresis in transformer, motor, rectifier, make the exercise not harmony of motor, dull, coil heating, loses electric energy greatly, and the electronic equipment overall efficiency will descend greatly.A kind of " kelvin effect " following the high frequency clutter in the electric system in addition and come, along with the increase of frequency can cause abnormal current strength, thereby increase the lead impedance, make lead be in hard service for a long time, cause the lead heating, make electric energy change heat energy into and consume, quicken that it is aging.
Therefore be necessary in electrical network, to adopt a kind of equipment that can absorb and eliminate these high order harmonic components, wink stream, surge, high-frequency noise.
China's application number is that 02142011.4 patent application discloses a kind of waveform correction filter, its circuit theory diagrams as shown in Figure 3, though it can eliminate surge (surge), spike disturbs and the differential mode noise of medium and low frequency section, but only low pass filter weakens at the high band attenuation, show as a band stop filter, therefore can not eliminate the differential mode noise of medium-high frequency section, nor can eliminate the noise that causes by common mode disturbances, so can't on the instrument and equipment that requirement is particularly arranged for anti-common mode disturbances of having relatively high expectations, use.
For addressing the above problem, the present domestic power line filter that generally adopts, its circuit structure as shown in Figure 4, this power line filter comprises nonlinear resistor 11, first, second inductor 13,14, first, second, third, fourth capacitor 12,16,17,18.First capacitor 12 that is used for the nonlinear resistor 11 of antisurge and is used for anti-differential mode interference is connected across between phase line L and the zero line N, and the two is parallel with one another; First inductor 13 is serially connected on the phase line L, second inductor 14 is serially connected on the zero line N, the two oppositely is wound on the FERRITE CORE 15 with the number of turn, this is first years old, second inductor 13,14 liang of inputs are connected on first capacitor, 12 two ends respectively, this is first years old, second inductor 13,14 is complementary on the passing through of electric current, therefore this with the reverse coiling mode of the number of turn for differential mode interference electric current and principal current first, second inductor 13, the magnetic flux that is produced on 14 is cancelled out each other, can allow differential-mode current pass through smoothly, and for the common mode disturbances electric current, first, second inductor 13,14 magnetic fields that produce are equidirectional, bigger inductance value can be produced, therefore common mode disturbances can be suppressed; Second capacitor 16 is connected across between 13,14 liang of outputs of this first, second inductor, also is used to suppress high frequency differential mode and disturbs; Three, the 4th capacitor 17,18 is connected mutually, and the two ends of series connection are connected across between first, second inductor 13,14 outputs, and are in parallel with this second capacitor 16; Three, the tie point ground connection of the 4th capacitor 17,18 series connection, the 3rd, the 4th capacitor 17,18 can further be eliminated common mode disturbances over the ground.
Though the said power filter has good filter effect for the differential mode and the common-mode noise of higher frequency band, but only suppress surge and spike interference with a nonlinear resistor, the inhibition ability is not good, secondly electric capacity is poor to the differential mode interference filter effect below the 1MHz frequency, adopt ferritic magnetic core permeability lower once more, thereby the inductance that obtains is less, if increase inductance, needs to increase core volume, occupy the space, and inductance core is easily saturated, and along with magnetic core is saturated, its rejection descends, the loss of FERRITE CORE is bigger in addition, heating also improves thereupon, makes saturation flux density reduce, and has damaged its rejection.Therefore the use on this filter instrument and equipment that is difficult to guarantee network source is had relatively high expectations.
Summary of the invention
Therefore the present invention is a kind of power supply wave shape correcting filter that provides for the technical problem that will solve the existing power supply filter, it also is a kind of comprehensive power-supply filter, not only surge (surge), the spike interference to electrical network or instrument and equipment generation has absorption and elimination effect, and the high order harmonic component that electrical network or instrument and equipment are produced, differential mode and common-mode noise have filter action.
The present invention is for the technical scheme that solves its technical problem and take provides a kind of power supply wave shape correcting filter, comprises the nonlinear resistor in parallel and first capacitor, oppositely is wound on first, second inductor on the magnetic core, the two or two capacitor and the 3rd, the 4th capacitor of series connection mutually with the number of turn; First, second inductor two inputs are connected on the first capacitor two ends respectively, cross-over connection has second capacitor between these first, second inductor two outputs, three, the two ends of the 4th capacitors in series are connected across between described first, second inductor output equally, in parallel with second capacitor, the tie point ground connection of the 3rd, the 4th capacitors in series; Also comprise first resistor that is connected between the first inductor output and the second inductor input, this first resistor and first capacitor and first inductor are formed low pass filter jointly.
The nanometer crystal alloy material that power supply wave shape correcting filter of the present invention also will have high initial magnetoconductivity, low-loss, high saturation magnetic flux density replaces Ferrite Material to be used for the magnetic core of above-mentioned first, second inductor institute coiling, the inductor of gained has that inductance value is big, volume is little, it is saturated to be difficult for, advantage that temperature stability is good, thereby can keep rejection preferably.
The present invention is inhibited to high-frequency harmonic wave and high-frequency noise that power consumption equipment produces, prevent that the pollution that power consumption equipment produces from entering into electrical network, simultaneously can prevent that again pollutions such as electrical network medium-high frequency harmonic wave, high-frequency noise, surge, spike transition from entering into equipment, improved power grid quality, guarantee the normal operation of instrument and equipment, saved the energy.
Description of drawings
Advantages and features of the invention will be described in detail in following embodiment in conjunction with the accompanying drawings.
Fig. 1 is normal mains by harmonics;
Fig. 2 is contaminated mains by harmonics;
Fig. 3 is that Chinese application number is the electrical block diagram of 02142011.4 patent application;
Fig. 4 is the electrical block diagram of the domestic power line filter that generally adopts;
Fig. 5 is the electrical block diagram of power supply wave shape correcting filter of the present invention;
Fig. 6 is the toroidal core BH curve schematic diagram that the present invention adopts;
Fig. 7 is the Application Example schematic diagram that power supply wave shape correcting filter series connection of the present invention inserts electrical network.
Fig. 8 is the filtering characteristic curve chart of power supply wave shape correcting filter of the present invention series connection when inserting electrical network and using;
Fig. 9 is the power supply wave shape correcting filter of the present invention schematic diagram that inserts the Another application embodiment of electrical network in parallel;
Filtering characteristic curve chart when Figure 10 is the use of power supply wave shape correcting filter of the present invention access in parallel electrical network.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
See also Fig. 5, power supply wave shape correcting filter of the present invention comprises nonlinear resistor 11, first, second inductor 13,14, first, second, third, fourth capacitor 12,16,17,18, also comprises first resistor 21.First capacitor 12 that is used for the nonlinear resistor 11 of antisurge and is used for anti-differential mode interference is connected across between phase line L and the zero line N, and the two is parallel with one another; First inductor 13 is serially connected on the phase line L, second inductor 14 is serially connected on the zero line N, and the two oppositely is wound on the magnetic core 22 with the number of turn, and 13,14 liang of inputs of this first, second inductor are connected on first capacitor, 12 two ends respectively; First resistor 21 is connected between these first inductor, 13 outputs and this second inductor, 14 inputs, forms low pass filter with first capacitor 12, first inductor 13; Second capacitor 16 is connected across between 13,14 liang of outputs of this first, second inductor, also is used to suppress high frequency differential mode and disturbs; Three, the 4th capacitor 17,18 is connected mutually, and the two ends of series connection are connected across between first, second inductor 13,14 outputs, and are in parallel with this second capacitor 16; Three, the common tie point ground connection of the 4th capacitor 17,18 series connection, the 3rd, the 4th capacitor 17,18 can further be eliminated common mode disturbances over the ground.
The magnetic core 22 of present embodiment is the toroidal core that adopts the nanometer crystal alloy material to make, its BH curve as shown in Figure 6, this magnetic core have very high initial magnetic permeability (＞80,000Gs/Oe), very little loss (＜35W/kg), high-saturation magnetic induction density (Bs=1.25T).Therefore for identical volume, the nanometer crystal alloy magnetic core is more many greatly than the inductance of FERRITE CORE, and be difficult for saturated, loss is little, heating is low, temperature stability is good, thereby can keep rejection preferably.
When in the electrical network or instrument and equipment when producing a high surge current, non-linear rheostat 11 moment conducting, its resistance becomes very little, the voltage that exceeds rheostat nominal voltage value part is discharged, voltage is clamped at rheostatic nominal voltage value, before surge produces and after the surge, rheostatic resistance shows as very big, is equivalent to open circuit.Because the voltage on first capacitor 12 can not transient change, first capacitor 12 just provides a path at that time big electric current, first capacitor 12 begins charging then, and rheostat 11 changes high impedance again into, and first capacitor 12 changes energy over to inductor 13,14 and resistor 21.Clamping voltage remains the nominal voltage value of non-linear rheostat 11.
Because nanometer crystal alloy toroidal core 22 is very easy to be magnetized and can keeps magnetization in wide magnetic flux penetration range, the electric energy that various spikes, transition interference noise enter first capacitor 12 just in magnetic core the form with magnetic energy be saved, this energy is processed by first resistor 21, and the energy of various spike transitions and interference noise is collected by network and absorbed.And the low pass filter of being made up of first capacitor 12, first inductor 13, first resistor 21 has attenuation to the interference below the 1MHz.Therefore embodiments of the invention have overcome the inhibition ability of the domestic power line filter that generally uses to the surge ripple, to the shortcoming of the frequency range filter effect difference below the 1MHz frequency.
Because first inductor 13 and second inductor 14 oppositely are wound on nanometer crystal alloy magnet ring 22 with the number of turn, this coiling mode makes first, second inductor 13,14 cancel out each other for the magnetic flux that differential mode interference electric current and principal current are produced, even therefore under the situation of large load current, can not cause the saturated of magnetic core yet, and to the common mode disturbances electric current, the magnetic field that first, second inductor 13,14 produces is equidirectional, can be reflected as bigger inductance value, be common mode inductance, so that obtain bigger common mode filtering effect.When therefore common mode noise current through first inductor 13 that being connected on the phase line L, when the magnetic line of force direction that is produced on the coil through second inductor 14 that being connected on the zero line N with common mode noise current, bigger common mode inductance plays attenuation to common-mode noise, simultaneously common-mode noise is carried out second level algorithm through the 4th capacitor 18 that is connected across the 3rd capacitor 17 between phase line L and the ground and be connected across between zero line N and the ground again, to reach decay on the whole and to suppress the purpose of common-mode noise.
Power supply wave shape correcting filter of the present invention also can comprise the indicator light circuit of indicative function together, this indicator light circuit is in series by the 5th capacitor 23, light-emitting diode 24, second resistor 25, and it also can further eliminate differential mode interference remaining in the electrical network.
Fig. 7 is the schematic diagram that power supply wave shape correcting filter series connection of the present invention inserts an Application Example of electrical network.As shown in Figure 7, power supply wave shape correcting filter series connection of the present invention is between network source 100 and instrument and equipment 200, its filtering characteristic curve as shown in Figure 8, when frequency is 10kHz, decay reaches 10dB, when frequency does not reach 1MHz, decay has surpassed 55dB, therefore tandem-type connection shown in Figure 7 has overcome the shortcoming that the present domestic power line filter that generally uses can't suppress the 10kHz-1MHz band interference, and have good attenuating equally at the high band that is higher than 1MHz, can be used for instrument and equipment common mode in the electrical network, differential mode, surge and spike transition have the occasion of requirement.
Fig. 9 is the power supply wave shape correcting filter of the present invention schematic diagram that inserts an application of electrical network in parallel.As shown in Figure 9, power supply wave shape correcting filter of the present invention and be connected in network source 100 and instrument and equipment 200 between, its filtering characteristic curve as shown in figure 10, it is the close attenuation of wave shape correcting filter of 02142011.4 patent application that the parallel connection method of power supply wave shape correcting filter of the present invention has with Chinese application number in the 10KHz-1MHz frequency range.This application of the present invention is used for instrument and equipment only has requirement near the interference noise the electrical network 100kHz or differential mode noise interference, surge, spike transition occasion.
The above-mentioned application of power supply wave shape correcting filter of the present invention has overcome the inhibition ability of the present domestic power line filter that generally uses to the surge ripple simultaneously, to the frequency range filter effect difference below the 1MHz frequency and Chinese application number the noise that the wave shape correcting filter of 02142011.4 patent application can not be eliminated the medium-high frequency section, the shortcoming of the noise that causes by common mode disturbances particularly.Two kinds of connections make that application is more flexible simultaneously, can be widely used in the input of electronic apparatus system, prevent that the pollution that power consumption equipment produces from entering into electrical network, can prevent surge in the electrical network, spike transition again, particularly pollution such as high-frequency harmonic, high-frequency noise enters into equipment, improve power grid quality, guaranteed the normal operation of instrument and equipment, saved the energy.
Claims (4)
1. power supply wave shape correcting filter comprises the nonlinear resistor and first capacitor in parallel, oppositely is wound on first, second inductor on the same magnetic core, second capacitor and the 3rd, the 4th capacitor that is in series with the number of turn; Described first, second inductor two inputs are connected on the described first capacitor two ends respectively, described second capacitor is connected across between described first, second inductor two outputs, the two ends of described the 3rd, the 4th capacitors in series are connected across between described first, second inductor output equally, in parallel with described second capacitor, the common tie point ground connection of described the 3rd, the 4th capacitors in series is characterized in that:
Also comprise first resistor that is connected between the described first inductor output and the second inductor input.
2. power supply wave shape correcting filter as claimed in claim 1 is characterized in that, described magnetic core is the nanometer crystal alloy toroidal core.
3. power supply wave shape correcting filter as claimed in claim 1 is characterized in that, also comprises an indicator light circuit, and described indicator light circuit is connected in parallel on the two ends of the 3rd, the 4th capacitors in series.
4. power supply wave shape correcting filter as claimed in claim 3 is characterized in that, described indicator light circuit comprises the 5th capacitor, light-emitting diode and second resistor of mutual series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100295598A CN100429855C (en) | 2005-09-12 | 2005-09-12 | Power supply wave shape correcting filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100295598A CN100429855C (en) | 2005-09-12 | 2005-09-12 | Power supply wave shape correcting filter |
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| CN1933273A CN1933273A (en) | 2007-03-21 |
| CN100429855C true CN100429855C (en) | 2008-10-29 |
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| CNB2005100295598A Expired - Fee Related CN100429855C (en) | 2005-09-12 | 2005-09-12 | Power supply wave shape correcting filter |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120038221A1 (en) * | 2009-02-13 | 2012-02-16 | Arni Bergmann Petursson | Electronic correction unit |
| FR2945154B1 (en) * | 2009-04-30 | 2011-07-22 | St Microelectronics Tours Sas | COMMON MODE FILTER WITH COUPLED INDUCTIONS |
| CN104102149A (en) * | 2013-04-10 | 2014-10-15 | 四川华通特种工程塑料研究中心有限公司 | Anti-interference digital-quantity acquisition system |
| CN103427420B (en) * | 2013-08-30 | 2015-09-30 | 上海坤友电气有限公司 | harmonic absorption device |
| CN103762952A (en) * | 2014-01-10 | 2014-04-30 | 深圳市鼎信通达科技有限公司 | Differential simulation voice conversion circuit |
| CN104734159A (en) * | 2015-04-01 | 2015-06-24 | 上海电力学院 | High-frequency harmonic absorbing device |
| CN108684212B (en) * | 2016-08-30 | 2020-07-21 | 富士电机株式会社 | Surge suppression circuit and inverter drive motor system |
| CN106374447A (en) * | 2016-10-12 | 2017-02-01 | 天峨县全盛蜂业科技有限公司 | Maintenance device capable of limiting current |
| CN111490545B (en) * | 2020-05-13 | 2022-03-18 | 东北电力大学 | Parallel active power filter control method with compensation target |
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Patent Citations (4)
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|---|---|---|---|---|
| CN2333138Y (en) * | 1998-05-12 | 1999-08-11 | 北京国际技术合作中心 | High strength gas discharge lamp electronic ballast |
| CN2368249Y (en) * | 1999-04-20 | 2000-03-08 | 天津新美房地产有限公司 | Energy-saving liquid electric heater |
| CN2466839Y (en) * | 2001-02-03 | 2001-12-19 | 周熙文 | Power supply common mode and series mode noise filter specially adapted for household cinema |
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Non-Patent Citations (2)
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| 电子产品传导干扰的抑制. 孔繁斌，赵金奎.舰船电子工程，第24卷. 2004 |
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| CN1933273A (en) | 2007-03-21 |
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