CN105720843A - Method and device for improving utilization efficiency of power frequency alternating current energy - Google Patents
Method and device for improving utilization efficiency of power frequency alternating current energy Download PDFInfo
- Publication number
- CN105720843A CN105720843A CN201610223892.0A CN201610223892A CN105720843A CN 105720843 A CN105720843 A CN 105720843A CN 201610223892 A CN201610223892 A CN 201610223892A CN 105720843 A CN105720843 A CN 105720843A
- Authority
- CN
- China
- Prior art keywords
- circuit
- wave
- alternating current
- rectifying
- full
- 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.)
- Pending
Links
Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
Abstract
The invention relates to a method and device for improving utilization efficiency of power frequency alternating current energy. A rectifying and filtering voltage regulating device is used. The rectifying, filtering and voltage regulating device comprises a full-wave rectifying circuit, a power supply filtering circuit and a voltage regulating circuit. The method comprises following steps of using the full-wave rectifying circuit to carry out full-wave rectifying processing to the power frequency alternating current provided by a user power grid; converting the power frequency alternating current provided by the user power grid into pulsating direct current; using the power supply filtering circuit to carry out power supply filtering processing to the pulsating direct current, thus generating 310V smooth direct current output; driving a direct current load, wherein the power of the output direct current to be increased by 4%-12% compared with the power of the alternating current provided by the user power grid; using the voltage regulating circuit to carry out voltage regulating processing to the rectified and filtered310V smooth direct current, thus generating 220V smooth direct current output. According to the method and the device provided by the invention, the direct current energy higher than the alternating current energy obtained from the user power grid is provided; the utilization efficiency of the alternating current is improved; and the electric energy is saved.
Description
Technical field
The present invention relates to energy saver technical field, be specifically related to a kind of method improving industrial frequency AC electric energy utilization ratio and device.
Background technology
At present, daily life and productive power are the alternating currents of 220/380V, 50Hz that distribution system consumer networks provides.Along with the development of Power Electronic Technique, there is increasing AC energy to carry out Power Electronic Technique process, change characteristic and the parameter of AC energy: frequency, voltage, phase place and waveform, to obtain superior technique characteristic and bigger economic benefit.Published by China Machine Press, " Power Electronic Technique " book of Qu Yongyin, Bai Jing chief editor is pointed out: " electric energy of current developed country existing 80% processes through Power Electronic Technique; energy-saving effect reaches 15%～40%; have document to estimate; to the year two thousand fifty, will reach 95% through processing the electric energy reapplied ".Current China Power Electronic Technique processes AC energy and is mainly used in some special industrial trades, if converter technique is for electric machine speed regulation；Commutation inversion technology is used for direct current transportation and D. C. Electrical Drive Systems.The AC energy that current family and the production field overwhelming majority are currently in use all processes without Power Electronic Technique.The circuit of the most terminal electrical equipments used in we production, life on the other hand all uses and maybe can use unidirectional current.Commutation technique is the Power Electronic Technique of a comparative maturity, and its function is that alternating current is converted to unidirectional current.The application of current commutation technique is electric and electronic technical field.Its main effect is to generate unidirectional current, provides DC source for other electrical equipments or electric circuit.The electricity saving function application of commutation technique is not found in energy-saving field.
Up to the present, there is not yet the method and the device that utilize Power Electronic Technique to improve consumer networks industrial frequency AC electric energy utilization ratio on market and in various data.
Summary of the invention
For saving electric energy and improving the utilization ratio of power frequency AC electric energy, the present invention proposes a kind of method improving industrial frequency AC electric energy utilization ratio and device, utilize Power Electronic Technique that consumer networks alternating current power supply carries out all wave rectification, power filter and pressure regulation to process, without expending other energy, alternating current just can be converted to the unidirectional current that voltage is higher, unidirectional current after conversion drives the power of electrical load more than AC power before conversion, improves AC energy utilization ratio, saves electric energy.
It is an object of the invention to be realized by following technical proposals: a kind of method improving industrial frequency AC electric energy utilization ratio, use a rectifying and wave-filtering regulator, described rectifying and wave-filtering regulator includes full-wave rectifying circuit, electric source filter circuit and regulating circuit, steps of the method are:
The industrial-frequency alternating current that consumer networks is provided by A, use full-wave rectifying circuit carries out all wave rectification process, converts the industrial-frequency alternating current that consumer networks provides to Rectified alternating current；
Rectified alternating current is carried out power filter process by B, use electric source filter circuit, generates the output of 310V smooth direct current electricity, drives DC load, makes the AC power that the DC electric power of output provides than consumer networks increase by 4%～12%；
310V smooth direct current electricity after rectifying and wave-filtering is carried out pressure regulation process by C, use regulating circuit, generates the output of 220V smooth direct current electricity.
It is another object of the present invention to be realized by following technical proposals: a kind of device improving industrial frequency AC electric energy utilization ratio, including rectifying and wave-filtering regulator, alternating current input and DC output end, described alternating current input is connected with described DC output end through described rectifying and wave-filtering regulator, and described rectifying and wave-filtering regulator includes full-wave rectifying circuit, electric source filter circuit and regulating circuit.
Further, described full-wave rectifying circuit is full-wave rectification bridge or the full wave rectifier being made up of commutation diode.
Further, described electric source filter circuit is the capacitive filter that capacitor forms or the LC filter being made up of inductance, electric capacity.
Further, described regulating circuit includes the pulse width modulating signal circuit (PWM) being made up of digital integrated electronic circuit and the on-off circuit being made up of full-control type power electronic element.
The present invention compared with prior art has the advantage that
1, the present invention is that prior art transboundary shifts application, is used for energy-saving field by generating galvanic commutation technique in electric and electronic technical field, improves the utilization ratio of alternating current, saves electric energy.Have not yet to see similar technique application scheme.
2, the present invention can significantly improve the utilization ratio of consumer networks AC energy, saves electric energy.The industrial-frequency alternating current that consumer networks provides processes through the Power Electronic Technique of the present invention, it is not necessary to provide other energy just can improve power 4%～12%.
3, many domestic electric appliances circuit all use unidirectional current, such as computer, television set, LED illumination lamp etc..Use DC source provided by the invention can simplify this type of product circuit structure, reduce its manufacturing cost.
4, along with the development of modern power electronics technology, unidirectional current application is more and more extensive, and the present invention can be used on offer unidirectional current in distribution box, and application prospect is extensive.
5, circuit of the present invention is simple, it is easy to make, it is simple to promote.
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the electrical principle block diagram improving industrial frequency AC electric energy utilization ratio device；
Fig. 2 is the circuit diagram of rectifying and wave-filtering regulator；
Fig. 3 is the experimental device for verifying circuit diagram of energy-saving effect of the present invention；
Fig. 4 is rectifying and wave-filtering voltage oscillogram.
Detailed description of the invention
The exemplary embodiment of the present invention, feature and aspect is described in detail below with reference to accompanying drawing.Accompanying drawing labelling identical in accompanying drawing represents the same or analogous element of function.
It addition, in order to better illustrate the present invention, detailed description of the invention below gives concrete electrical equipment parameter.It will be appreciated by those skilled in the art that there is no some detail, the equally possible enforcement of the present invention.Method, means, element and the circuit known for those skilled in the art are not described in detail, in order to highlight the purport of the present invention.
Embodiment one:
A kind of method improving industrial frequency AC electric energy utilization ratio, uses a rectifying and wave-filtering regulator, and described rectifying and wave-filtering regulator includes full-wave rectifying circuit, electric source filter circuit and regulating circuit, steps of the method are:
The industrial-frequency alternating current that consumer networks is provided by A, use full-wave rectifying circuit carries out all wave rectification process, converts the industrial-frequency alternating current that consumer networks provides to Rectified alternating current；
Rectified alternating current is carried out power filter process by B, use electric source filter circuit, generates the output of 310V smooth direct current electricity, drives DC load, makes the AC power that the DC electric power of output provides than consumer networks increase by 4%～12%；
310V smooth direct current electricity after rectifying and wave-filtering is carried out pressure regulation process by C, use regulating circuit, generates the output of 220V smooth direct current electricity；The power electrical apparatus of 220V alternating current is used for some.
In the present embodiment, consumer networks provides 220V, 50Hz industrial-frequency alternating current, the industrial-frequency alternating current of consumer networks output is carried out rectification, the process of power filter Power Electronic Technique, 50Hz alternating current is converted to the 310V unidirectional current output that voltage is higher, increase DC electric power, improve 50Hz AC energy utilization ratio, save electric energy.
The detailed construction of rectifying and wave-filtering regulator may refer to embodiment two disclosure.
Embodiment two:
Referring to Fig. 1, Fig. 2, a kind of device improving industrial frequency AC electric energy utilization ratio, including rectifying and wave-filtering regulator 1, alternating current input 7 and DC output end 8, described alternating current input is connected with described DC output end through described rectifying and wave-filtering regulator, and described rectifying and wave-filtering regulator includes full-wave rectifying circuit 2, electric source filter circuit 3 and regulating circuit 6.
In the present embodiment, described full-wave rectifying circuit can be full-wave rectification bridge, it is also possible to the full wave rectifier being made up of commutation diode.Wherein, full-wave rectifying circuit and electric source filter circuit composition straightening and filtering unit.
In the present embodiment, described regulating circuit 6 includes the pulse width modulating signal circuit (PWM) 4 being made up of digital integrated electronic circuit and the on-off circuit 5 being made up of full-control type power electronic element.
Component parameter in Fig. 2, model are as follows:
R1=100k, R2=10k, R3=10k, Rp1=Rp2=220k；
C1=2.2 μ, C2=0.01 μ, C3=470 μ/400V, C4=470 μ/400V；
D1: full-wave rectification bridge 35A/1kV；
VD1, VD2, VD3 model: 1N4001；
IC model: NE555；
CT model: IGBTG4BC30KD
In the present embodiment, it is 220V, 50Hz industrial-frequency alternating current that described alternating current input connects power supply, industrial-frequency alternating current processes through Power Electronic Technique such as all wave rectification, power filter, Voltage Cortrol and generates smooth direct current electricity, export 310V and 220V two-way smooth direct current electricity then through DC output end 8, drive electrical load.
In the present embodiment, described electric source filter circuit is the capacitive filter that capacitor forms or the LC filter being made up of inductance, electric capacity.
In the present embodiment, referring to Fig. 2, described full-wave rectifying circuit is full-wave rectification bridge D1, and the input of described full-wave rectification bridge D1 is connected with described alternating current input 7, and the outfan of described full-wave rectification bridge D1 is in parallel with capacitive filter C1.
The 220V alternating current of consumer networks input is connected to full-wave rectification bridge D1 input, the outfan of a full-wave rectification bridge D1 470 μ/400V capacitive filter C1 in parallel.220V alternating current is converted to Rectified alternating current through full-wave rectification bridge D1 rectification, comparatively smooth 310V unidirectional current output is generated after processing then through capacitive filter C1 filtering, energy storage, voltage stabilizing, 310V unidirectional current carries out blood pressure lowering process then through regulating circuit simultaneously, generate 220V unidirectional current, after, export 310V and 220V two-way unidirectional current through DC output end.
Further, referring to Fig. 2, the on-off circuit 5 in described regulating circuit is connected in straightening and filtering unit output unidirectional current loop, and the modulation signal output part of pulse width modulating signal circuit 4 is connected with the control end of on-off circuit 5.Pulse width modulating signal circuit controling switch circuit 5, reduces to 220V unidirectional current by 310V unidirectional current, exports through DC output end 8.
Referring to Fig. 3, in order to verify the energy-saving effect of the present invention, devise experimental device for verifying.The input of straightening and filtering unit of the present invention connects power frequency AC, and the outfan of straightening and filtering unit connects electrical load.Component parameter, model: D1 in Fig. 3: full-wave rectification bridge 35A/1kV；C1:470 μ/400V.A1 is alternating current ammeter, measures the alternating current before rectifying and wave-filtering, and V1 is A.C. voltmeter, measures the alternating voltage before rectifying and wave-filtering.A2 is DC ammeter, measures the DC current after rectifying and wave-filtering, and V2 is D.C. voltmeter, measures the DC voltage after rectifying and wave-filtering.The input of full-wave rectification bridge D1 connects alternating current input, the DC output end shunt capacitance C1 of full-wave rectification bridge D1, then connects the electrical equipment as load.Experiment content is detection, contrasts the AC power and DC electric power that drive same electrical equipment to consume.In other words, AC power is the input electric energy of the present invention, and DC electric power is the output electric energy of the present invention, if the output electric energy of the results show present invention is more than the input electric energy of the present invention, then illustrate that the present invention can improve the utilization ratio of industrial-frequency alternating current, saves electric energy.The unidirectional current load used in experiment is that the series connection such as electric filament lamp, electric heater, electric cautery, hair drier use, because this electric appliances rated voltage is 220V, concatenation use can improve withstanding voltage, it is prevented that damages.Experimental data is in Table 1.
Table 1 energy-saving effect confirmatory experiment data list
Energy-saving effect confirmatory experiment conclusion is as follows:
The experimental data of table 1 shows:
1, the industrial-frequency alternating current that distribution system consumer networks provides processes through the Power Electronic Technique of the present invention, and utilization ratio can improve 4.14%～12.6%, and energy-saving effect is obvious.
2, reason that in table 1, energy-saving effect difference is bigger is probably the electrical characteristic difference of electrical load and causes: capacitive character, inductive, resistive；It is likely to relevant with the power of load；It is likely to the composition with current rectifying and wave filtering circuit and component parameters is relevant.In work from now on should research and probe further, select more suitable rectifying and wave-filtering mode and component parameters, it is possible to improve energy-saving effect further.
The present invention saves the principle of work and power analysis of electric energy:
In object, the olderly flowage of electric charge produces electric current, and the size of current of industrial-frequency alternating current and flow direction do cyclically-varying over time, and the alternating current electric charge in conductor is to do periodic reverse flowing.And galvanic flow direction is constant, unidirectional current electric charge does directional flattening flowing.Forward flow during alternating current electric charge, time and reverse flow, period also have flowing pause zero passage moment.So AC charge electric energy is less than the charged energy of unidirectional current.AC charge flow resistance is except having impedance on the other hand, also has induction reactance, and flow resistance is relatively big, also can produce electromagnetic radiation and capacitance current, it is also possible to produce reactive power, so AC charge electric energy loss is bigger in AC charge flowing.And direct current electric charge flow resistance only has impedance, electric energy loss is less.According to law of conservation of energy, alternating current is converted to unidirectional current, and energy of a charge loss reduces, and the direct current energy after conversion necessarily increases.Therefore the direct current energy after conversion is more than the AC energy before conversion.Macro manifestations is that after AC rectification filtering, DC voltage raisesTimes: without in outside resources intervention situation, the filtering of 220V AC rectification generates the smooth direct current electricity of about 310V.The reason that its voltage raises is likely to relevant with alternating current and galvanic difference with mechanism.Voltage raises then electric charge electric energy and increases.The wavy curve (referring to Fig. 4) of voltage before and after com-parison and analysis filtering again, the area that voltage waveform is formed at time-projection with it is relevant with the meansigma methods of voltage, in Fig. 4, curve L1 represents the Rectified alternating current corrugating before filtering, curve L2 represents filtered smooth dc voltage waveform, in figure, hatched area represents the difference of filtering anterioposterior curve and the area of its time-projection formation, and after thus the filtering of proof alternating current is converted to unidirectional current, average voltage increases to some extent.220V industrial-frequency alternating current can be exchanged into 310V unidirectional current through rectifying and wave-filtering.
In family and industrial circle, major part terminal electrical equipment all uses unidirectional current maybe can use unidirectional current.Application prospect of the present invention is better.At present commercially or data yet there are no the method that improve industrial frequency AC electric energy utilization ratio similar to the present invention and device.
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope of present disclosure; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (5)
1. the method improving industrial frequency AC electric energy utilization ratio, it is characterised in that: using a rectifying and wave-filtering regulator, described rectifying and wave-filtering regulator includes full-wave rectifying circuit, electric source filter circuit and regulating circuit, steps of the method are:
The industrial-frequency alternating current that consumer networks is provided by A, use full-wave rectifying circuit carries out all wave rectification process, converts the industrial-frequency alternating current that consumer networks provides to Rectified alternating current；
Rectified alternating current is carried out power filter process by B, use electric source filter circuit, generates the output of 310V smooth direct current electricity, drives DC load, makes the AC power that the DC electric power of output provides than consumer networks increase by 4%～12%；
310V smooth direct current electricity after rectifying and wave-filtering is carried out pressure regulation process by C, use regulating circuit, generates the output of 220V smooth direct current electricity.
2. the device improving industrial frequency AC electric energy utilization ratio, it is characterized in that: include rectifying and wave-filtering regulator, alternating current input and DC output end, described alternating current input is connected with described DC output end through described rectifying and wave-filtering regulator, and described rectifying and wave-filtering regulator includes full-wave rectifying circuit, electric source filter circuit and regulating circuit.
3. the device of raising industrial frequency AC electric energy utilization ratio according to claim 2, it is characterised in that: described full-wave rectifying circuit is full-wave rectification bridge or the full wave rectifier being made up of commutation diode.
4. the device of raising industrial frequency AC electric energy utilization ratio according to claim 2, it is characterised in that: described electric source filter circuit is the capacitive filter that capacitor forms or the LC filter being made up of inductance, electric capacity.
5. the device of raising industrial frequency AC electric energy utilization ratio according to claim 2, it is characterised in that: described regulating circuit includes the pulse width modulating signal circuit being made up of digital integrated electronic circuit and the on-off circuit being made up of full-control type power electronic element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610223892.0A CN105720843A (en) | 2016-04-12 | 2016-04-12 | Method and device for improving utilization efficiency of power frequency alternating current energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610223892.0A CN105720843A (en) | 2016-04-12 | 2016-04-12 | Method and device for improving utilization efficiency of power frequency alternating current energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105720843A true CN105720843A (en) | 2016-06-29 |
Family
ID=56159994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610223892.0A Pending CN105720843A (en) | 2016-04-12 | 2016-04-12 | Method and device for improving utilization efficiency of power frequency alternating current energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105720843A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127286A (en) * | 2007-07-17 | 2008-02-20 | 西安交通大学 | Permanent magnetic machine controller based on pulse modulation technology |
| CN101959348A (en) * | 2010-09-30 | 2011-01-26 | 海洋王照明科技股份有限公司 | LED stepless dimming drive circuit and LED lamp |
| CN201766754U (en) * | 2010-09-07 | 2011-03-16 | 深圳北森科技有限公司 | Non-isolated type LED driving power supply having protection function |
| CN102076138A (en) * | 2009-11-25 | 2011-05-25 | 北京交通大学 | Electric supply input LED (Light Emitting Diode) constant current driver |
| CN201854491U (en) * | 2009-10-12 | 2011-06-01 | 惠州市日野电子有限公司 | Metal halogen lamp electronic ballast |
| US20150312983A1 (en) * | 2014-04-25 | 2015-10-29 | Cree, Inc. | High efficiency driver circuit with fast response |
| CN205123604U (en) * | 2015-11-09 | 2016-03-30 | 航天长峰朝阳电源有限公司 | Online integrated integration monolithic formula switching power supply |
| CN205123401U (en) * | 2015-11-30 | 2016-03-30 | 国网江西省电力公司南昌供电分公司 | Super capacitor UPS device based on buck circuit |
-
2016
- 2016-04-12 CN CN201610223892.0A patent/CN105720843A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127286A (en) * | 2007-07-17 | 2008-02-20 | 西安交通大学 | Permanent magnetic machine controller based on pulse modulation technology |
| CN201854491U (en) * | 2009-10-12 | 2011-06-01 | 惠州市日野电子有限公司 | Metal halogen lamp electronic ballast |
| CN102076138A (en) * | 2009-11-25 | 2011-05-25 | 北京交通大学 | Electric supply input LED (Light Emitting Diode) constant current driver |
| CN201766754U (en) * | 2010-09-07 | 2011-03-16 | 深圳北森科技有限公司 | Non-isolated type LED driving power supply having protection function |
| CN101959348A (en) * | 2010-09-30 | 2011-01-26 | 海洋王照明科技股份有限公司 | LED stepless dimming drive circuit and LED lamp |
| US20150312983A1 (en) * | 2014-04-25 | 2015-10-29 | Cree, Inc. | High efficiency driver circuit with fast response |
| CN205123604U (en) * | 2015-11-09 | 2016-03-30 | 航天长峰朝阳电源有限公司 | Online integrated integration monolithic formula switching power supply |
| CN205123401U (en) * | 2015-11-30 | 2016-03-30 | 国网江西省电力公司南昌供电分公司 | Super capacitor UPS device based on buck circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102340251B (en) | Alternating-current to direct-current converter and control circuit thereof | |
| CN110365205A (en) | A kind of high efficiency totem non-bridge PFC Rectifier | |
| CN100413172C (en) | Power factor compensator and compensation method therof | |
| CN112467972A (en) | Control method and device of PFC circuit | |
| CN1801588A (en) | Variable-frequency air-condition power supply power factor correcting device | |
| CN103825475A (en) | Circuit and control method for improving vehicle-mounted charger power factor | |
| CN206585481U (en) | PFC PFC rectification circuits, electromagnetic heating system and electromagnetic oven | |
| CN103337975A (en) | Current source transverter and control method thereof | |
| CN109327147A (en) | A kind of power regulation device of High Frequency Solid State induction heating power | |
| CN102554441A (en) | Constant-current control device for welding power source of medium-frequency inverter resistance electric welding machine and control method for welding power source | |
| CN101877920A (en) | Soft start method and device of half-bridge resonance induction cooker IGBT (Insulated Gate Bipolar Translator) | |
| CN204652705U (en) | A kind of IGBT superaudio induction heating power | |
| Saravanan et al. | A novel power factor correction modified bridge less-CUK converter for LED lamp applications | |
| CN105720843A (en) | Method and device for improving utilization efficiency of power frequency alternating current energy | |
| Jha et al. | Hardware implementation of single phase power factor correction system using micro-controller | |
| CN205595645U (en) | Multifunctional distribution box | |
| CN2755859Y (en) | Power factor compensator of frequency-variable air conditioner | |
| CN215498740U (en) | High-voltage variable-frequency power supply | |
| CN109842286A (en) | A kind of pfc circuit | |
| CN206628990U (en) | PFC PFC rectification circuits, electromagnetic heating system and electromagnetic oven | |
| CN205726494U (en) | A kind of stable electromagnetic heating control system | |
| CN207200609U (en) | Flow-regulating type electric motor electricity saver | |
| CN204205933U (en) | Based on critical conduction mode pfc circuit | |
| CN101499729A (en) | Three phase frequency changing power device for diamond product hot pressing sintering | |
| CN206640517U (en) | PFC PFC rectification circuits, electromagnetic heating system and electromagnetic oven |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160629 |
|
| WD01 | Invention patent application deemed withdrawn after publication |