CN105429453A - High power factor power supply based on PFC circuit - Google Patents
High power factor power supply based on PFC circuit Download PDFInfo
- Publication number
- CN105429453A CN105429453A CN201510998640.0A CN201510998640A CN105429453A CN 105429453 A CN105429453 A CN 105429453A CN 201510998640 A CN201510998640 A CN 201510998640A CN 105429453 A CN105429453 A CN 105429453A
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- Prior art keywords
- module
- power supply
- voltage
- pfc
- power factor
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Classifications
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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
- H02M1/4258—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage
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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
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- 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 relates to a high power factor power supply based on a PFC circuit. The high power factor power supply comprises a DC-DC module, a PFC module connected with the input end of the DC-DC module for improving the power factor, and a holding capacitor connected between the output end of the PFC module and the ground in parallel for smoothening alternating voltage into direct voltage. The high power factor power supply based on the PFC circuit is characterized in that difference between the output voltage and input voltage of the PFC module keeps constant when the input voltage is increased to a certain value. According to the high power factor power supply, the PFC module is added in front of the DC-DC module, so that the potential difference between the output voltage and input voltage of the PFC module is basically constant, the power factor of the power supply circuit is greatly improved, and thereby the power supply efficiency is obviously improved, and the problem that in the traditional power supply, the power supply efficiency is obviously reduced due to that the difference between the input voltage and the output voltage is increased is solved. Experiments show that the power factor of the power supply provided by the invention is not less than 0.98, and the efficiency of the same is not less than 97%.
Description
Technical field
The invention belongs to power technique fields, be specifically related to a kind of high power factor direct current power supply based on PFC (PowerFactorCorrection, power factor correction) circuit.
Background technology
Along with the development of power electronic technology, power supply is more and more extensive in the application of various electronic applications.In traditional capacitor filtering current rectifying front-end circuit, only when AC supply voltage reaches peak value, energy could be extracted from the very narrow pulse of charging current waveform.But the peak value of this current impulse is very large, and harmonic content is very high.APFC is in the market substantially all boosting voltage-stabilizing output circuit, exchanges input range to be generally ~ 85 to ~ 264V, so PFC output voltage must be greater than 375V, this circuit is well suited for ~ and the electric power system of 220V.But when being used for voltage be ~ electrical network of 110V time, the performance of this boost-voltage regulator can be deteriorated.This is because the efficiency of voltage boosting and stabilizing circuit is generally by boosted how many decisions, in other words, the difference of input and output voltage is larger, and the power factor of this voltage boosting and stabilizing circuit is lower, and efficiency also can be deteriorated.So, when setting is exported for the booster circuit of 375V be applied in ~ electrical network of 110V time, the power factor of power supply will comparatively ~ 220V time have obvious reduction, produce larger thermal losses and thermal shock therefrom.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention proposes a kind of high power factor direct current power supply based on pfc circuit, the voltage of the PFC module output of described power supply can follow the change in voltage of its input, substantially increases power factor and the efficiency of power supply.
For achieving the above object, the present invention adopts following technical scheme:
A kind of high power factor direct current power supply based on PFC, comprise DC-DC module, be connected to described DC-DC module input for the PFC module that improves power factor and the holding capacitor be connected in parallel between described PFC module output and ground, when input voltage increases to a certain value, the output voltage of described PFC module and the difference of input voltage keep constant.
Further, described power supply also comprises the low ripple attenuation module be connected with described DC-DC module output.
Further, described power supply also comprises EMI (ElectroMagneticInterference) filter be connected with described PFC module input.
Further, the alternating voltage that PFC module exports is smoothed to direct voltage by described holding capacitor, for rear class DC-DC module.
Further, described PFC module comprises rectifier, Zero Current Switch booster converter, controls testing circuit.The input termination ac voltage signal of described rectifier, it is sinusoidal wave to described Zero Current Switch booster converter that output exports positive half cycle.Described control testing circuit is according to the phase difference between the voltage detection signal inputted by described rectifier and the current detection signal inputted by described Zero Current Switch booster converter, the pulse control signal extremely described Zero Current Switch booster converter that output frequency changes with described phase difference, makes the current waveform of described PFC module follow voltage waveform change; Described control testing circuit is according to the voltage detection signal inputted by described rectifier and the amplitude difference of output voltage feedback signal inputted by described Zero Current Switch booster converter, the pulse control signal extremely described Zero Current Switch booster converter that output pulse width changes with described amplitude difference, thus make the difference of the output voltage of described PFC module and input voltage keep constant.
Compared with prior art, the present invention has following beneficial effect:
The present invention by increasing PFC module before DC-DC module, make the output voltage of PFC module and the potential difference substantially constant of input voltage, substantially increase the power factor of power circuit, power-efficient is improved significantly, solve exist in conventional power source because of input and output voltage difference increase cause power-efficient obviously to reduce problem.Experiment shows, the power factor of power supply of the present invention is not less than 0.98, and efficiency is not less than 97%.In addition, increase PFC module and reduce the requirement of DC-DC module to wide-range input voltage.
Accompanying drawing explanation
Fig. 1 is the composition frame chart of power supply of the present invention;
Fig. 2 is the circuit diagram of electromagnetic interface filter;
Fig. 3 is the composition frame chart of PFC module;
Fig. 4 is the circuit diagram of holding capacitor;
Fig. 5 is the winding diagram of DC-DC module;
Fig. 6 is the winding diagram of low ripple attenuation module.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
As shown in Figure 1, power supply of the present invention comprises the electromagnetic interface filter, PFC module, holding capacitor, DC-DC module and the low ripple attenuation module that are connected successively.According to specific needs, DC-DC module and low ripple attenuation module can be a road, also can be multichannel.
Electromagnetic interface filter is used for the electromagnetic interference in filtering input ac power.Fig. 2 gives a kind of concrete electromagnetic interface filter, and R1 is piezo-resistance, for suppressing peak surge; C1, C2, C3, C4, L1 form LC alternating current filter, eliminate the differential mode interference of Line To Line, and line common mode disturbances over the ground.
PFC module is used for Modulating Power factor, harmonic reduction component, improves power-efficient.The composition frame chart of PFC module as shown in Figure 3, comprises rectifier, Zero Current Switch booster converter, controls testing circuit.Control testing circuit according to the phase difference between the voltage detection signal inputted by described rectifier and the current detection signal inputted by described Zero Current Switch booster converter, the pulse control signal extremely described Zero Current Switch booster converter that output frequency changes with described phase difference, make the current waveform of described PFC module follow voltage waveform change, make power factor be close to 1; Described control testing circuit is according to the voltage detection signal inputted by described rectifier and the amplitude difference of output voltage feedback signal inputted by described Zero Current Switch booster converter, the pulse control signal extremely described Zero Current Switch booster converter that output pulse width changes with described amplitude difference, thus make the difference of the output voltage of described PFC module and input voltage keep constant.
PFC module of the prior art, when input ac voltage is 85 ~ 264V, output dc voltage is 375V.And PFC module of the present invention, when input ac voltage is 85 ~ 152V, output dc voltage is 260V; When input ac voltage is greater than 152V, export the constant pressure difference keeping 46V with input.Constant owing to exporting with input voltage difference, thus substantially increase the power factor of power supply, power factor can reach more than 0.99, also effectively inhibits harmonic distortion simultaneously, and harmonic distortion is less than 8%.
The alternating voltage that holding capacitor is used for PFC module exports is smoothed to approximate DC voltage, for rear class DC-DC module.As shown in Figure 4, holding capacitor adopts 4 electrochemical capacitor C1 ~ C4 in parallel.
DC-DC module is the nucleus module of power circuit, the direct voltage of the normal need of work of output system.Fig. 5 gives the winding diagram of the V375B series module that DC-DC module selects Vicor; this module peak power output is 200W, module with overvoltage protection, under-voltage protection, overcurrent protection, overtemperature protection, enable, in parallel, far-end remote sensing, export the functions such as adjustable.
Low ripple attenuation module adopts active filtering mode damped cycle ripple and random irregular interference.This module selects the RSO-1F module of ISDJ, and winding diagram as shown in Figure 6.After the ripple on circuit being detected, circuit can produce a back electromotive force to balance out useless ripple.At the maximum 30db of decay of 500Hz ~ 500KHz wave band (output ripple is down to below 10mV).
Power supply of the present invention, both can use 400Hz Alternating Current Power Supply, such as airborne power supply, also can use 50Hz Alternating Current Power Supply.Different application scenarios only slightly need adjust and can meet the demands circuit parameter.
The invention is not restricted to above-mentioned execution mode, those skilled in the art make to any apparent improvement of above-mentioned execution mode or change, all can not exceed the protection range of design of the present invention and claims.
Claims (4)
1. the high power factor direct current power supply based on PFC, comprise DC-DC module, be connected to described DC-DC module input for improving the PFC module of power factor, and be connected in parallel between described PFC module output and ground, for alternating voltage being smoothed to the holding capacitor of direct voltage; It is characterized in that, when input voltage increases to a certain value, the output voltage of described PFC module and the difference of input voltage keep constant.
2. the high power factor direct current power supply based on PFC according to claim 1, is characterized in that, described power supply also comprises the low ripple attenuation module be connected with described DC-DC module output.
3. the high power factor direct current power supply based on PFC according to claim 1, is characterized in that, described power supply also comprises the electromagnetic interface filter be connected with described PFC module input.
4. the high power factor direct current power supply based on PFC according to claim 1, is characterized in that, described PFC module comprises rectifier, Zero Current Switch booster converter, controls testing circuit; The input termination ac voltage signal of described rectifier, it is sinusoidal wave to described Zero Current Switch booster converter that output exports positive half cycle; Described control testing circuit is according to the phase difference between the voltage detection signal inputted by described rectifier and the current detection signal inputted by described Zero Current Switch booster converter, the pulse control signal extremely described Zero Current Switch booster converter that output frequency changes with described phase difference, makes the current waveform of described PFC module follow voltage waveform change; Described control testing circuit is according to the voltage detection signal inputted by described rectifier and the amplitude difference of output voltage feedback signal inputted by described Zero Current Switch booster converter, the pulse control signal extremely described Zero Current Switch booster converter that output pulse width changes with described amplitude difference, thus make the difference of the output voltage of described PFC module and input voltage keep constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998640.0A CN105429453B (en) | 2015-12-28 | 2015-12-28 | A kind of high power factor direct current power supply based on pfc circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998640.0A CN105429453B (en) | 2015-12-28 | 2015-12-28 | A kind of high power factor direct current power supply based on pfc circuit |
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| Publication Number | Publication Date |
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| CN105429453A true CN105429453A (en) | 2016-03-23 |
| CN105429453B CN105429453B (en) | 2018-07-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106507546A (en) * | 2016-12-26 | 2017-03-15 | 吉安伊戈尔电气有限公司 | A kind of high reliability surge protection circuit |
| CN116545248A (en) * | 2023-06-28 | 2023-08-04 | 深圳市力生美半导体股份有限公司 | Low-temperature starting method of switching power supply, charging pile and power supply equipment |
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| JP2001145382A (en) * | 2000-10-16 | 2001-05-25 | Hitachi Ltd | Motor controller |
| CN102386788A (en) * | 2010-08-26 | 2012-03-21 | 东芝照明技术株式会社 | DC power source unit and LED lamp system |
| CN203027532U (en) * | 2012-11-19 | 2013-06-26 | 刘祥林 | Constant-current and wide-voltage drive circuit for tandem light-emitting diodes |
| CN103607111A (en) * | 2008-11-07 | 2014-02-26 | 电力集成公司 | Method and apparatus to increase efficiency in a power factor correction circuit |
| CN104717795A (en) * | 2013-12-16 | 2015-06-17 | 立锜科技股份有限公司 | Light emitting device control circuit with dimming function and control method thereof |
-
2015
- 2015-12-28 CN CN201510998640.0A patent/CN105429453B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001145382A (en) * | 2000-10-16 | 2001-05-25 | Hitachi Ltd | Motor controller |
| CN103607111A (en) * | 2008-11-07 | 2014-02-26 | 电力集成公司 | Method and apparatus to increase efficiency in a power factor correction circuit |
| CN102386788A (en) * | 2010-08-26 | 2012-03-21 | 东芝照明技术株式会社 | DC power source unit and LED lamp system |
| CN203027532U (en) * | 2012-11-19 | 2013-06-26 | 刘祥林 | Constant-current and wide-voltage drive circuit for tandem light-emitting diodes |
| CN104717795A (en) * | 2013-12-16 | 2015-06-17 | 立锜科技股份有限公司 | Light emitting device control circuit with dimming function and control method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106507546A (en) * | 2016-12-26 | 2017-03-15 | 吉安伊戈尔电气有限公司 | A kind of high reliability surge protection circuit |
| CN116545248A (en) * | 2023-06-28 | 2023-08-04 | 深圳市力生美半导体股份有限公司 | Low-temperature starting method of switching power supply, charging pile and power supply equipment |
| CN116545248B (en) * | 2023-06-28 | 2023-12-29 | 深圳市力生美半导体股份有限公司 | Low-temperature starting method of switching power supply, charging pile and power supply equipment |
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| CN105429453B (en) | 2018-07-17 |
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