CN104054244A - Power saving apparatus having function of improving power quality and power saving method thereof - Google Patents
Power saving apparatus having function of improving power quality and power saving method thereof Download PDFInfo
- Publication number
- CN104054244A CN104054244A CN201380005460.7A CN201380005460A CN104054244A CN 104054244 A CN104054244 A CN 104054244A CN 201380005460 A CN201380005460 A CN 201380005460A CN 104054244 A CN104054244 A CN 104054244A
- Authority
- CN
- China
- Prior art keywords
- energy saver
- power
- power quality
- order harmonic
- power saving
- 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.)
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/04—Flower-pot saucers
- A01G9/047—Channels or gutters, e.g. for hydroponics
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
- A01G9/16—Dismountable or portable greenhouses ; Greenhouses with sliding roofs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Rectifiers (AREA)
- Inverter Devices (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The present invention relates to a power saving apparatus using a direct current reactor circuit for removing harmonics and to a power saving method thereof. A power saving apparatus having a function of improving power quality by removing harmonics generated from non-linear load comprises: a current limiter connected in parallel to the non-linear load so as to limit the current being input to the power saving apparatus; a rectifying device connected in series to the first current limiter so as to rectify the current applied thereto; and a reactance circuit connected to an output terminal of the rectifying device so as to smooth the pulsating current output from the rectifying device. The power saving apparatus and power saving method thereof according to the present invention have effects of preventing an increase in voltage and current caused by a resonance.
Description
Technical field
The present invention relates to a kind ofly in activity, remove high order harmonic component and use quality power, thereby the energy saver with power saving function with and power-economizing method, especially, relate to a kind of energy saver that uses direct current reactive circuit in order to remove high order harmonic component with and power-economizing method.
Background technology
Conventionally, for existing energy saver energy-conservation and that use is to reduce the voltage that puts on load, and the corresponding electricity usage rate that reduces reaches energy-saving effect.
But, the also variation such as power equipment, electronic equipment due to the exploitation of various electronic technology in recent years, belong to the various machineries, utensil, electronic equipment of the existing automation in automatic control type power equipment category etc., its imaginary loading or use the load of the electronic equipment of thyristor etc. to use the electric power of power plant supply in order to remove waveform in the electric power in supply, rather than ohmic load.
At present, because the hysteresis of transformer core produces non-sinusoidal waveform, this non-sinusoidal waveform becomes the reason of high order harmonic component, but due to automatic power equipment as above or electronic equipment, and produce more high order harmonic component.
As shown in Figure 1, described device is the device that alternating current is converted to direct current and is fed to load, that is, can be using the direct current through conversion as the DC chopper (Chopper) of power supply, inverter etc., by alternating current be converted to different frequency cycloconverter (Cycloconverter), by controlling thyristor, adjust the power governor etc. of the alternating current that is fed to load.
For solving the reason that produces high order harmonic component, in utilizing the machinery across zero point (Zero-crossing point) of sine-wave power, be designed to only have twice across zero point during 1 cycle at 60Hz, but for a certain reason and voltage waveform while deforming, control circuit produce misoperation and control bit to produce more across zero point, thereby generation high order harmonic component.
In order to reduce described higher harmonic current, as shown in Figure 1, high-order harmonic filtering device is set before power equipment or electronic equipment.
Existing shown in Fig. 1 is high-order harmonic filtering device for removing the device of high order harmonic component.
As shown in Figure 1, by power transformer, power to the load.As shown in the figure, load used incandescent lamp or heater, without the special linear loads such as common induction motor of controlling, as utilized the electronic equipment loads such as supply unit of thyristor power supply, controls the load of the various forms such as motor even load of variable velocity.
In as above various loads, in the proximity that produces the load of high order harmonic component, be parallel with the higher harmonic resonance filter circuit being formed by inductor and capacitor, thereby remove high order harmonic component.
Use the activity of described high-order harmonic filtering device, even if the in the situation that of normal load, the filter in merit because of compensation equipment or removal high order harmonic component also often has an accident with capacitor and reactor.The reason having an accident at such equipment is increase and the high order harmonic component of the electric current and voltage that causes due to the resonance because of internal system.Wherein, the use of the nonlinear load of increase generation high order harmonic component causes frequently breaking down.Therefore,, in order to reduce the generation of accident, the reactor using as filter and the operating characteristics of capacitor are of crucial importance.
The high order harmonic component producing in utilizing the equipment of power inverter introduces discontinuously the electrical property load of electric current during the cycle in sine voltage source or the impedance of load changes all the time, and power loss increases, and affects the equipment together connecting.
In comprising the nonlinear load of high order harmonic component, while producing resonance due to the induction composition of power supply and load and capacitive component, can cause voltage or electric current to increase.
Summary of the invention
The present invention proposes for solving described problem, and its object is, provide a kind of can because of resonance not cause energy saver that voltage and electric current increase with and power-economizing method.
Other objects of the present invention are, provide a kind of do not produce power loss and energy-conservation energy saver with and power-economizing method.
Other another objects of the present invention are, provide a kind of energy saver that can use the electric power that power quality improves with and power-economizing method.
Other another objects of the present invention are, provide a kind of energy saver that is conveniently arranged at activity with and power-economizing method.
For reaching described object, the energy saver with raising power quality function of the present invention, to remove the high order harmonic component producing in nonlinear load, thereby improve the energy saver of the function of power quality, wherein, comprise: the first flow restricter, in parallel with described nonlinear load, restriction is input into the electric current of energy saver; Rectifying device, connects with described the first flow restricter, the electric current that rectifier flows into; And reactance circuit, be connected in the output of described rectifying device, the pulsating current of exporting from described rectifying device is carried out to filtering.
Energy saver of the present invention, further comprises second flow restricter of connecting with described reactance circuit.
In energy saver of the present invention, described reactance circuit comprises inductor and first capacitor of connecting with described inductor.
In energy saver of the present invention, described reactance circuit comprise series connection described inductor and with the second capacitor of described the first Parallel-connected Capacitor.
Of the present invention, have in the energy saver that improves power quality function, described rectifying device consists of bridgt circuit.
Of the present invention, have in the energy saver that improves power quality function, described the first capacitor is in parallel with display lamp, and described display lamp is for showing the action of energy saver.
For reaching described object, according to the power-economizing method with the energy saver of the function that improves power quality of the present invention, to remove the high order harmonic component producing in nonlinear load, thereby the power-economizing method with the energy saver that improves power quality function, wherein, comprising: the step that the electric current that contains the high order harmonic component producing in described nonlinear load is input to the rectification circuit of described energy saver; In described rectification circuit rectification, be input to the step of the electric current of described rectification circuit; And the step of the described electric current through rectification being carried out to filtering.
As mentioned above, according to of the present invention have the energy saver that improves power quality function with and power-economizing method there is in load system the effect that can not cause voltage and electric current to increase because of resonance.
Energy saver according to the present invention with and power-economizing method there is the effect that does not produce power loss.
Energy saver according to the present invention with and power-economizing method there is the effect that can use the electric power that power quality is enhanced.
Energy saver according to the present invention has the effect that can conveniently be arranged at activity.
Accompanying drawing explanation
Fig. 1 is provided with the schematic diagram of the form of high-order harmonic filtering device at existing nonlinear load.
Fig. 2 is according to the schematic diagram of the embodiment of energy saver of the present invention.
Fig. 3 is the schematic diagram of wave form varies in the energy saver according to the present invention.
Fig. 4 is according to the schematic diagram of other embodiment of energy saver of the present invention.
In figure:
100,200: energy saver, S: power supply, NL: load, D1, D2, D3, D4, D5: diode, R1, R2, R3: resistance, L1: inductor, C1: the first capacitor, C2: the second capacitor, LED:LED display lamp
Embodiment
Described object of the present invention and new feature will be clearer and more definite by technology of the present invention and appended drawing.
First, concept of the present invention is described.
According to of the present invention have the energy saver that improves power quality function with and power-economizing method, the high order harmonic component that removal produces in nonlinear load, collection is included in the electric current of the high order harmonic component producing in nonlinear load, and described in rectification after the electric current through collecting, the described electric current through rectification is carried out to filtering in rectification circuit.
Below, with reference to Fig. 2 and Fig. 3, describe the embodiment that there is the energy saver of the function that improves power quality according to of the present invention in detail.
Fig. 2 is according to the schematic diagram of the embodiment of energy saver of the present invention, and Fig. 3 is the schematic diagram of wave form varies in the energy saver according to the present invention.
As shown in Figure 2, drawing symbol S is power supply (Source), and NL is the nonlinear load for generation of high order harmonic component (Non-linear Load) that is connected in power supply S.The energy saver of the present invention of drawing symbol 100 right and wrong linear load NL parallel connections.
According to energy saver 100 of the present invention, the series connection of the input of its resistance R 1 and bridged rectifier circuit D1, D2, D3, D4, and in parallel with nonlinear load NL, thus the voltage with high order harmonic component composition is as shown in Figure 3 a from one end input of nonlinear load NL.Now, resistance R 1 is used from the effect of the first flow restricter that limits the electric current that is input into energy saver 100.As mentioned above, through resistance R 1, be input into the high order harmonic component of bridgt circuit D1 or D2, be rectified as shown in Figure 3 b output.
From the electric current of bridged rectifier circuit D1 or D2 output, through inductor L1 and the first capacitor C1 that formation direct current reactive circuit the other end that flows to nonlinear load NL by bridged rectifier circuit D4 or D3.The higher harmonic current of flow-thru electrode sensor L1 and capacitor C1 has the waveform of form shown in Fig. 3 c at a P3 and P4.
At a P3 and P4, be connected with the LED display lamp of connecting with resistance R 3.LED display lamp with for removing the driving of the high order harmonic component of energy saver 100, confirm that separately energy saver 200 is whether in the display unit of regular event.
Energy saver 100 can be regarded as mentioned above, and the high order harmonic component producing in nonlinear load NL is removed in inductor L1 and capacitor C1 through bridged rectifier circuit D1, D2, D3, D4.
The electric current of high order harmonic component composition starts to be input to the other end of nonlinear load NL and finishes at the other end of nonlinear load from one end of nonlinear load NL, with described form, describing is because high order harmonic component composition results from nonlinear load NL.
By forming as mentioned above, in order effectively to remove high order harmonic component, in Fig. 2, voltage between some P1 and P2, through the voltage between bridged rectifier circuit D1, D2, D3, D4 and inductor L1, keep 10～15V, higher harmonic current weakens and current decay 17%, and merit is because approximately improving 25%.Higher harmonic current through improving significantly weakens third high subharmonic and the 5th high order harmonic component mainly producing at electronic fluorescent lamp, notebook computer (PC), digital television etc.
In energy saver 100 according to the present invention, also together input the voltage from power supply S supply, but the impedance of the high high order harmonic component of number of times in the reactance circuit consisting of inductor L1 and capacitor C1 is low, therefore, has effect as mentioned above while removing high order harmonic component.
Even if the voltage of power supply S supply is input to energy saver 100, can be as load consumption electric power at energy saver 100, therefore, the electric power that power supply S consumes is very small.
Below, with reference to Fig. 4, describe other embodiment that there is the energy saver of the function that improves power quality according to of the present invention in detail.
In described other embodiment, omit the explanation for part same as the previously described embodiments, for identical drawing symbol, their description is omitted.
As shown in Figure 4, Reference numeral 200 is energy savers of other embodiment.Energy saver 200 is further included in does not have the resistance R 2, the second capacitor C2 and the diode D5 that use in the embodiment of energy saver 100.
Resistance R 2 is connected with the formation inductor L1 of X-bridge and the circuit of the first capacitor C1.Resistance R 2 is the second flow restricter.That is, resistance R 2 can stop electric current excess flow to the capacitor C2 in parallel of the circuit with inductor L1 and capacitor C1.Resistance R 2 and capacitor C2 carried out filtering before by inductor L1 and capacitor C1 filtering as constructed as above, and therefore, the present embodiment has double-smoothing effect.
As above-described embodiment, at some P3 and the P4 of Fig. 4, be also connected with the LED display lamp of connecting with resistance R 3.
At energy saver 100 according to the present invention, in 200, by bridged rectifier circuit D1, D2, D3, the high order harmonic component that D4 is rectified is by inductor L1, capacitor C1 and the X-bridge being formed by inductor L1 and capacitor C1, therefore can not meet for i.e. 1/ (2 π the fC)=2 π fL (f: high order harmonic component frequency of the resonance condition of the sine wave AC of X-bridge, L: inductor capacity, C: condenser capacity), therefore, by induction composition and capacitive component, can not produce resonance, therefore, at energy saver of the present invention, can there is not the problem that voltage increases suddenly or electric current increases suddenly.
As long as energy saver 100,200 according to the present invention is in parallel with nonlinear load NL, therefore, when being fabricated at the input terminal a of energy saver 100,200, during the structure of b attachment plug, plug at general socket, thereby can conveniently arrange.
Industrial utilization possibility
According to of the present invention have the energy saver that improves power quality function with and power-economizing method can be on the low pressure feed places such as general family or distribution line safety and remove easily high order harmonic component.
Claims (7)
1. having an energy saver that improves power quality function, is to remove the high order harmonic component producing in nonlinear load, thereby improves the energy saver of power quality, it is characterized in that, comprise: the first flow restricter, in parallel with described nonlinear load, restriction is input into the electric current of described energy saver; Rectifying device, connects with described the first flow restricter, the electric current that rectifier flows into; And reactance circuit, be connected in the output of described rectifying device, the pulsating current that filtering is exported from described rectifying device.
2. the energy saver with raising power quality function according to claim 1, is characterized in that, further comprises second flow restricter of connecting with described reactance circuit.
3. the energy saver with raising power quality function according to claim 1 and 2, is characterized in that, described reactance circuit comprises inductor and first capacitor of connecting with described inductor.
4. according to claim 3 have an energy saver that improves power quality function, it is characterized in that, described reactance circuit comprise series connection described inductor and with the second capacitor of described the first Parallel-connected Capacitor.
5. the energy saver with raising power quality function according to claim 4, is characterized in that, described rectifying device consists of bridgt circuit.
6. the energy saver with raising power quality function according to claim 5, is characterized in that, described the first capacitor is in parallel with display lamp, and described display lamp is for showing the action of energy saver.
7. one kind has the power-economizing method that improves power quality function, to remove the high order harmonic component producing in nonlinear load, thereby the power-economizing method with the energy saver that improves power quality function, it is characterized in that, comprising: the step that the electric current that is included in the high order harmonic component producing in described nonlinear load is input to the rectification circuit of described energy saver; In described rectification circuit rectification, be input to the step of the electric current of described rectification circuit; And the step of the described electric current through rectification being carried out to filtering.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120003917A KR101174819B1 (en) | 2012-01-12 | 2012-01-12 | A electrical energy saver with improved power quality and the saving method thereof |
| KR10-2012-0003917 | 2012-01-12 | ||
| PCT/KR2013/000240 WO2013105808A1 (en) | 2012-01-12 | 2013-01-11 | Power saving apparatus having function of improving power quality and power saving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104054244A true CN104054244A (en) | 2014-09-17 |
| CN104054244B CN104054244B (en) | 2017-06-20 |
Family
ID=46887399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380005460.7A Expired - Fee Related CN104054244B (en) | 2012-01-12 | 2013-01-11 | With the energy saver and its power-economizing method that improve power quality function |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101174819B1 (en) |
| CN (1) | CN104054244B (en) |
| WO (1) | WO2013105808A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101426419B1 (en) * | 2013-03-18 | 2014-08-07 | 임금성 | A Intelligent power-saving socket |
| KR20160112548A (en) | 2015-03-19 | 2016-09-28 | 서림비앤에스 주식회사 | The Sleep to operate a control system and its operational method |
| KR20210146110A (en) | 2020-05-26 | 2021-12-03 | 한국에코시스템 주식회사 | High-grade power reduction device |
| CN115333133B (en) * | 2022-10-14 | 2023-02-28 | 锦浪科技股份有限公司 | Energy storage system control method and device and energy storage system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100774100B1 (en) * | 2007-07-31 | 2007-11-06 | 전력품질기술주식회사 | Advanced hybrid harmonics filter |
| CN201234139Y (en) * | 2008-08-01 | 2009-05-06 | 西安爱科电子有限责任公司 | Dynamic reactive compensation apparatus for drilling well power distribution network |
| CN101741235A (en) * | 2009-12-29 | 2010-06-16 | 重庆大学 | Buck three-phase power factor corrector with controlled output voltage |
| CN201758287U (en) * | 2010-08-24 | 2011-03-09 | 北京金恒科讯节能科技有限公司 | Low-voltage active power filter |
| CN101997313A (en) * | 2009-08-18 | 2011-03-30 | 王德伟 | In-parallel compound filter |
| CN102025146A (en) * | 2010-11-27 | 2011-04-20 | 南京航空航天大学 | Double-switch direct current active power filter and control method thereof |
| CN102195287A (en) * | 2011-05-20 | 2011-09-21 | 江西中能电气科技有限公司 | Parallel-connection active power filter suitable for three-phase four-wire power grid system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100294081B1 (en) * | 1999-03-17 | 2001-06-15 | 차동해 | Parallel hybrid active filter |
| JP3740926B2 (en) | 2000-01-26 | 2006-02-01 | 松下電器産業株式会社 | Power supply |
| DE10118285A1 (en) | 2001-04-12 | 2002-11-07 | Philips Corp Intellectual Pty | Circuit for converting AC voltage to DC voltage |
-
2012
- 2012-01-12 KR KR1020120003917A patent/KR101174819B1/en active IP Right Review Request
-
2013
- 2013-01-11 WO PCT/KR2013/000240 patent/WO2013105808A1/en active Application Filing
- 2013-01-11 CN CN201380005460.7A patent/CN104054244B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100774100B1 (en) * | 2007-07-31 | 2007-11-06 | 전력품질기술주식회사 | Advanced hybrid harmonics filter |
| CN201234139Y (en) * | 2008-08-01 | 2009-05-06 | 西安爱科电子有限责任公司 | Dynamic reactive compensation apparatus for drilling well power distribution network |
| CN101997313A (en) * | 2009-08-18 | 2011-03-30 | 王德伟 | In-parallel compound filter |
| CN101741235A (en) * | 2009-12-29 | 2010-06-16 | 重庆大学 | Buck three-phase power factor corrector with controlled output voltage |
| CN201758287U (en) * | 2010-08-24 | 2011-03-09 | 北京金恒科讯节能科技有限公司 | Low-voltage active power filter |
| CN102025146A (en) * | 2010-11-27 | 2011-04-20 | 南京航空航天大学 | Double-switch direct current active power filter and control method thereof |
| CN102195287A (en) * | 2011-05-20 | 2011-09-21 | 江西中能电气科技有限公司 | Parallel-connection active power filter suitable for three-phase four-wire power grid system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104054244B (en) | 2017-06-20 |
| KR101174819B1 (en) | 2012-08-23 |
| WO2013105808A1 (en) | 2013-07-18 |
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