CN104410267A - Switching power source - Google Patents
Switching power source Download PDFInfo
- Publication number
- CN104410267A CN104410267A CN201410670454.XA CN201410670454A CN104410267A CN 104410267 A CN104410267 A CN 104410267A CN 201410670454 A CN201410670454 A CN 201410670454A CN 104410267 A CN104410267 A CN 104410267A
- Authority
- CN
- China
- Prior art keywords
- protection module
- module
- power
- rectification module
- factor corrector
- 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
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- 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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The invention discloses a switching power source. The switching power source comprises an EMI filter, a first rectification module, a power factor corrector, a power converter, a PMW controller, a second rectification module, an input overvoltage and undervoltage protection module, a short-circuit protection module, a current-limiting protection module and an output overvoltage protection module. The EMI filter is connected with the first rectification module, the power converter and the power factor corrector are connected with the first rectification module, the power converter is connected with the power factor corrector, the second rectification module and the PMW controller are connected with the power converter, the first rectification module, the power factor corrector and the PMW controller are connected with the input overvoltage and undervoltage protection module, and the short-circuit protection module, the current-limiting protection module and the output overvoltage protection module are connected between the second rectification module and the PMW controller. The switching power source can overcome the defect that due to current transformation of an existing switching power source, the power is unstable.
Description
Technical field
The present invention relates to a kind of Switching Power Supply.
Background technology
Power electronic technology is important support science and technology.The critical sciemtifec and technical sphere in the world today has seven aspects: the energy, environmental protection, information, communication, life science, material and traffic, none discord power electronic technology of each field is relevant, power electronic technology all plays an important role at each sciemtifec and technical sphere, and power supply is one of them importance.Power supply converts utility network or certain electric energy and control, and provide the power supply unit of high-quality electric energy to various electric loading.Power supply is the power heart of all electronic equipments, and the quality of its performance is directly connected to the safety and reliability index of whole system.
Switching Power Supply have employed power switch pipe, and switching tube is in by certain frequency and turns on and off in the continuous switching of two states in circuit, by realizing voltage stabilizing by sampling, amplifying, compare the feedback circuit control switch state formed with reference circuit.
Common Switching Power Supply, the inside of equipment needs one to be the power unit of direct current by AC conversion.In this transfer process, due to the existence of some non-linear elements, although cause the alternating voltage inputted to be sinusoidal, the alternating current Severe distortion of input, comprises a large amount of harmonic wave.And the existence of harmonic wave, not only reduce the power factor of input circuit, and pollution is produced to public power system, cause fault.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of Switching Power Supply, thus overcome the shortcoming that the current transformation inputting existing Switching Power Supply makes power instability.
For achieving the above object, the invention provides a kind of Switching Power Supply, comprising: electromagnetic interface filter, the first rectification module, power factor corrector, power inverter, PMW controller, the second rectification module, input overvoltage/undervoltage protection module, short circuit protection module, current-limiting protection module and output over-voltage protection module, described electromagnetic interface filter is connected with described first rectification module, described power inverter and described power factor corrector are connected with described first rectification module respectively, described power inverter is connected with described power factor corrector, described second rectification module is connected with described power inverter respectively with described PMW controller, described first rectification module, described power factor corrector and described PMW controller are connected with described input overvoltage/undervoltage protection module respectively, described short circuit protection module is connected with between described second rectification module and described PMW controller, described current-limiting protection module and described output over-voltage protection module.
In technique scheme, the model of described power factor corrector is UC3854.
In technique scheme, described power inverter is direct-voltage power converter.
Compared with prior art, the present invention has following beneficial effect: the Switching Power Supply in the present invention, adopt power factor corrector correcting power factors, adopt power inverter that fixed voltage is transformed to variable voltage, power factor is combined, even if electric current is conversion, under the control of PMW controller with variable voltage, power factor and voltage are changed with electric current one, thus makes the rated power reaching stable output.
Accompanying drawing explanation
Fig. 1 is the structural representation according to Switching Power Supply of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or part, and do not get rid of other element or other part.
As shown in Figure 1, according to a kind of Switching Power Supply of the specific embodiment of the invention, comprising: electromagnetic interface filter 10, first rectification module 20, power factor corrector 60, power inverter 30, PMW controller 70, second rectification module 40, input overvoltage/undervoltage protection module 50, short circuit protection module 80, current-limiting protection module 90 and output over-voltage protection module 100; Electromagnetic interface filter 10 is connected with the first rectification module 20; power inverter 30 and power factor corrector 60 are connected with the first rectification module 20 respectively; power inverter 30 is connected with power factor corrector 60; second rectification module 40 is connected with power inverter 30 respectively with PMW controller 70; first rectification module 20, power factor corrector 60 and PMW controller 70 are connected with input overvoltage/undervoltage protection module 50 respectively, are connected with short circuit protection module 80, current-limiting protection module 90 and output over-voltage protection module 100 between the second rectification module 40 and PMW controller 70.Wherein, the model of power factor corrector 60 is UC3854, and power inverter 30 is direct-voltage power converter.
Electrical network electricity consumption enters from EMI filtration module 10, rectification is carried out through the first rectification module 20 after filtering, power inverter 30 is entered after rectification, change the power factor of electricity consumption by power factor corrector 60 simultaneously and feed back to power inverter 30, at this moment, be variable direct voltage by power inverter 30 by DC voltage conversion, and control power inverter 30 by PWM controller 70 and export and meet the voltage of rated power, in this embodiment, because direct voltage and power factor are variable, therefore, under the control of the controller 70 of PWM, power inverter 30 can be made to export the voltage meeting the rated power of electrical equipment, and not by the impact of electrical network current variation, finally by the laggard line output of the second rectification module 40.In this Switching Power Supply, be also provided with input overvoltage/undervoltage protection module 50, short circuit protection module 80, current-limiting protection module 90, output over-voltage protection module 100, makes this Switching Power Supply more stable.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (3)
1. a Switching Power Supply, it is characterized in that, comprising: electromagnetic interface filter, the first rectification module, power factor corrector, power inverter, PMW controller, the second rectification module, input overvoltage/undervoltage protection module, short circuit protection module, current-limiting protection module and output over-voltage protection module, described electromagnetic interface filter is connected with described first rectification module, described power inverter and described power factor corrector are connected with described first rectification module respectively, described power inverter is connected with described power factor corrector, described second rectification module is connected with described power inverter respectively with described PMW controller, described first rectification module, described power factor corrector and described PMW controller are connected with described input overvoltage/undervoltage protection module respectively, described short circuit protection module is connected with between described second rectification module and described PMW controller, described current-limiting protection module and described output over-voltage protection module.
2. Switching Power Supply according to claim 1, is characterized in that, the model of described power factor corrector is UC3854.
3. Switching Power Supply according to claim 1, is characterized in that, described power inverter is direct-voltage power converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670454.XA CN104410267A (en) | 2014-11-20 | 2014-11-20 | Switching power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670454.XA CN104410267A (en) | 2014-11-20 | 2014-11-20 | Switching power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104410267A true CN104410267A (en) | 2015-03-11 |
Family
ID=52647870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410670454.XA Pending CN104410267A (en) | 2014-11-20 | 2014-11-20 | Switching power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104410267A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107347171A (en) * | 2017-08-25 | 2017-11-14 | 东莞中拓机械技术开发有限公司 | A kind of pulsewidth modulation 600W+150W（PFC）Power amplifier module |
| CN107911013A (en) * | 2017-12-11 | 2018-04-13 | 成都互聚科技有限公司 | A kind of regulated power supply system with multi-protective function |
| CN117134294A (en) * | 2023-10-23 | 2023-11-28 | 智道网联科技(深圳)有限公司 | Power supply protection device and V2X base station all-in-one machine |
-
2014
- 2014-11-20 CN CN201410670454.XA patent/CN104410267A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107347171A (en) * | 2017-08-25 | 2017-11-14 | 东莞中拓机械技术开发有限公司 | A kind of pulsewidth modulation 600W+150W（PFC）Power amplifier module |
| CN107347171B (en) * | 2017-08-25 | 2023-12-22 | 东莞精恒电子有限公司 | Pulse width modulation 600W+150W (PFC) power amplifier module |
| CN107911013A (en) * | 2017-12-11 | 2018-04-13 | 成都互聚科技有限公司 | A kind of regulated power supply system with multi-protective function |
| CN117134294A (en) * | 2023-10-23 | 2023-11-28 | 智道网联科技(深圳)有限公司 | Power supply protection device and V2X base station all-in-one machine |
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| 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: 20150311 |
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| WD01 | Invention patent application deemed withdrawn after publication |