CN106329907A - Compound-type efficient power factor correction (PFC) circuit - Google Patents
Compound-type efficient power factor correction (PFC) circuit Download PDFInfo
- Publication number
- CN106329907A CN106329907A CN201611015536.6A CN201611015536A CN106329907A CN 106329907 A CN106329907 A CN 106329907A CN 201611015536 A CN201611015536 A CN 201611015536A CN 106329907 A CN106329907 A CN 106329907A
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- circuit
- outfan
- electrically connected
- resistance
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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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a compound-type efficient power factor correction circuit in the technical field of PFC (power factor correction) circuit. The compound-type efficient PFC circuit comprises a rectifier, the input end of the rectifier is electrically connected with the input port of a mains supply, the output end of the rectifier is electrically connected with the input end of an input voltage detection circuit, the output end of the input voltage detection circuit is electrically connected with the input end of an input current detection circuit, the output end of the input current detection circuit is electrically connected with the input end of a booster circuit, the input end of a reduction voltage circuit and the output end of the mains supply respectively, and the output end of the booster circuit and the output end of the reduction voltage circuit are electrically connected with the output end of the mains supply. The compound-type efficient power factor correction circuit has the advantages that the circuits are similar to a BUCK reduction voltage correction circuit which is efficient, low in output ripple, small in voltage and current stress of switching tubes and high in power factor, and technical defects in the prior art are made up.
Description
Technical field
The present invention relates to pfc circuit technical field, be specially a kind of composite efficient circuit of power factor correction.
Background technology
Along with the enhancing of global environmental consciousness, in countries in the world, especially developed countries and regions, environmental protection
The application of power supply will be more and more universal, and in power supply, efficiency with Switching Power Supply is the highest again, and conventional Switching Power Supply is due to alternating current-direct current
The input of changer (AC-DC) has rectification and filter capacitor, so PF (power factor) value of exchange is the lowest, typically 0.6～
About 0.8, harmonic wave interference is big, in substantial amounts of low power factor plant-grid connection electrical network, causes the service efficiency of electrical network low and has
Substantial amounts of harmonic injection, the normal work of interference electrical network, affect the safety of electrical network, thus now whole world major part country for
The Switching Power Supply power power supply more than 75W, all specifies to require that power factor is more than more than 0.9, conventional PFC electricity
Passive correction and active correction are divided again in road, and passive correction needs a big inductance, big and bulky to the consumption of copper,
In order to save the consumption of copper and reduce the volume of power supply, it is active that circuit of power factor correction primarily now is essentially all employing
Correcting circuit, APFC based on BOOST booster type circuit, also has the active power factor of little part again
Correcting circuit uses BUCK step-down circuit, and two kinds of correcting circuits are respectively arranged with quality；BOOST boost power factor correction circuit
Advantage is that power factor is high, shortcoming be switch tube voltage and current stress big, the efficiency of circuit is lower than BUCK circuit, output ripple
Greatly；The advantage of BUCK buck-type power factor correction circuit is that efficiency is high, and switch tube voltage and current stress are little, output ripple
Little, shortcoming is that power factor is lower than BOOST circuit, and when the input voltage is lower than the output voltage, circuit can not work, for
This, I proposes a kind of composite efficient circuit of power factor correction.
Summary of the invention
It is an object of the invention to provide a kind of composite efficient circuit of power factor correction, to solve above-mentioned background technology
The existing BOOST booster type of middle proposition and the problem of the shortcoming of BUCK buck-type power factor correction circuit.
For achieving the above object, the present invention provides following technical scheme: a kind of composite efficient circuit of power factor correction,
Including commutator, the input of described commutator is electrically connected with mains electricity input end mouth, and the outfan of described commutator electrically connects
Being connected to the input of input voltage detection circuit, the outfan of described input voltage detection circuit is electrically connected with input current inspection
The input of slowdown monitoring circuit, the outfan of described input electric cur-rent measure circuit is electrically connected with the input of booster circuit, fall
The input of volt circuit and civil power output port, the outfan of described booster circuit and reduction voltage circuit is electrically connected with civil power output
Port, the input of described input voltage detection circuit, input electric cur-rent measure circuit, booster circuit and reduction voltage circuit the most electrically connects
It is connected to the outfan of drive circuit.
Preferably, described input voltage detection circuit includes resistance R1, and the input of described resistance R1 is electrically connected with whole
The outfan of stream device, the outfan of described resistance R1 is also connected to electric capacity C1, resistance R2 and the input of resistance R3, described resistance R3
Outfan and be connected to electric capacity C2 and the input of metal-oxide-semiconductor A1, the outfan of described electric capacity C1, resistance R2 and electric capacity C2 all connects
Ground, the outfan of described metal-oxide-semiconductor A1 is electrically connected with No. 3 ports of amplifier U1A, No. 2 and No. 1 ends of described amplifier U1A
Mouth is all electrically connected with voltage output end mouth, No. 4 port ground connection of described amplifier U1A, No. 8 ports of described amplifier U1A
It is electrically connected with detection positive source.
Preferably, described input electric cur-rent measure circuit includes that metal-oxide-semiconductor A2, the input of described metal-oxide-semiconductor A2 are electrically connected with
The cathode output end of input voltage detection circuit, the outfan of described metal-oxide-semiconductor A2 and be connected to current monitor U2 No. 4 ports and
The input of resistance R4, the outfan of described resistance R4 is also connected to cathode output end and the current monitoring of input voltage detection circuit
No. 5 ports of device U2, No. 3 ports of described current monitor U2 are also connected to input and the cathode output end mouth of resistance R5, institute
State No. 2 ports of current monitor U2 and be connected to ground wire, the outfan of resistance R5 and cathode output end mouth.
Preferably, described booster circuit includes that inducer L1, the input of described inducer L1 are electrically connected with input electricity
The cathode output end mouth of current detection circuit, the outfan of described inducer L1 is also connected to input and the diode D1 of metal-oxide-semiconductor A3
Input, the outfan of described diode D1 is also connected to input and the positive polarity output port of electric capacity C3, described electric capacity
The outfan of C3 is also connected to voltage negative pole output port, ground wire, the outfan of metal-oxide-semiconductor A3 and the negative pole of input electric cur-rent measure circuit
Output port.
Preferably, described reduction voltage circuit includes that metal-oxide-semiconductor A4, the input of described metal-oxide-semiconductor A4 are electrically connected with input current
The output port of testing circuit, the outfan of described metal-oxide-semiconductor A4 is also connected to input and the colelctor electrode of audion Q1 of resistance R6,
The outfan of described resistance R6 is also connected to base stage and the input of stabilivolt D2 of audion Q1, the outfan of described stabilivolt D2
Ground connection, the emitter stage of described audion Q1 is electrically connected with voltage output end mouth.
Preferably, described commutator is full-bridge rectifier.
Compared with prior art, the invention has the beneficial effects as follows: this circuit uses drive circuit to provide PWM to many group circuit
Signal is controlled, and improves power density, voltage that drive circuit detects according to input voltage detection circuit and phase place thereof
The electric current arrived with input electric cur-rent measure electric circuit inspection and phase place thereof, control the dutycycle being used for controlling the pwm signal of break-make respectively,
Input and output current ripple can partly or completely be offset, substantially reduce input and the ripple of output electric current, from
And reduce the disturbance to input voltage of the whole circuit, reduce the electromagnetic interference of whole circuit, also increase whole circuit
Output voltage and the vibration frequency of output electric current, reduce the fluctuation of output voltage, and this circuit has similar BUCK blood pressure lowering simultaneously
The voltage of the high efficiency of type correcting circuit, output ripple and low and switching tube and the little advantage of current stress, have again BOOST booster type
The High Power Factor advantage of correcting circuit, compensate for the defect of prior art.
Accompanying drawing explanation
Fig. 1 is principle of the invention block diagram；
Fig. 2 is input voltage detection circuit figure of the present invention；
Fig. 3 is input electric cur-rent measure circuit diagram of the present invention；
Fig. 4 is booster circuit figure of the present invention；
Fig. 5 is reduction voltage circuit figure of the present invention.
In figure: 1 commutator, 2 input voltage detection circuits, 3 input electric cur-rent measure circuit, 4 booster circuits, 5 reduction voltage circuits,
6 drive circuits.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Referring to Fig. 1-5, the present invention provides a kind of technical scheme: a kind of composite efficient circuit of power factor correction, bag
Including commutator 1, the input of described commutator 1 is electrically connected with mains electricity input end mouth, and the outfan of described commutator 1 electrically connects
Being connected to the input of input voltage detection circuit 2, the outfan of described input voltage detection circuit 2 is electrically connected with input current
The input of testing circuit 3, the outfan of described input electric cur-rent measure circuit 3 is electrically connected with the input of booster circuit 4
End, the input of reduction voltage circuit 5 and civil power output port, the outfan of described booster circuit 4 and reduction voltage circuit 5 is electrically connected with
Civil power output port, described input voltage detection circuit 2, input electric cur-rent measure circuit 3, booster circuit 4 and reduction voltage circuit 5 defeated
Enter end and be all electrically connected with the outfan of drive circuit 6.
Wherein, described input voltage detection circuit 2 includes that resistance R1, the input of described resistance R1 are electrically connected with rectification
The outfan of device 1, the outfan of described resistance R1 is also connected to electric capacity C1, resistance R2 and the input of resistance R3, described resistance R3
Outfan and be connected to electric capacity C2 and the input of metal-oxide-semiconductor A1, the outfan of described electric capacity C1, resistance R2 and electric capacity C2 all connects
Ground, the outfan of described metal-oxide-semiconductor A1 is electrically connected with No. 3 ports of amplifier U1A, No. 2 and No. 1 ends of described amplifier U1A
Mouth is all electrically connected with voltage output end mouth, No. 4 port ground connection of described amplifier U1A, No. 8 ports of described amplifier U1A
Being electrically connected with detection positive source, described input electric cur-rent measure circuit 3 includes metal-oxide-semiconductor A2, and the input of described metal-oxide-semiconductor A2 is electrical
Connecting and have the cathode output end of input voltage detection circuit 2, the outfan of described metal-oxide-semiconductor A2 is also connected to the 4 of current monitor U2
Number port and the input of resistance R4, the outfan of described resistance R4 is also connected to the cathode output end of input voltage detection circuit 2
With No. 5 ports of current monitor U2, No. 3 ports of described current monitor U2 are also connected to the input of resistance R5 and positive pole is defeated
Going out port, No. 2 ports of described current monitor U2 are also connected to ground wire, the outfan of resistance R5 and cathode output end mouth, described
Booster circuit 4 includes inducer L1, and the positive pole that the input of described inducer L1 is electrically connected with input electric cur-rent measure circuit 3 is defeated
Going out port, the outfan of described inducer L1 is also connected to input and the input of diode D1 of metal-oxide-semiconductor A3, described diode
The outfan of D1 is also connected to input and the positive polarity output port of electric capacity C3, and the outfan of described electric capacity C3 is also connected to voltage
The cathode output end mouth of cathode output end mouth, ground wire, the outfan of metal-oxide-semiconductor A3 and input electric cur-rent measure circuit 3, described blood pressure lowering electricity
Road 5 includes that the input of metal-oxide-semiconductor A4, described metal-oxide-semiconductor A4 is electrically connected with the output port of input electric cur-rent measure circuit 3, described
The outfan of metal-oxide-semiconductor A4 is also connected to input and the colelctor electrode of audion Q1 of resistance R6, and the outfan of described resistance R6 also connects
Having base stage and the input of stabilivolt D2 of audion Q1, the output head grounding of described stabilivolt D2, described audion Q1 sends out
Emitter-base bandgap grading is electrically connected with voltage output end mouth, and described commutator 1 is full-bridge rectifier.
Operation principle: utilize commutator 1 that the power supply of input is carried out rectifying and wave-filtering, by input voltage detection circuit 2 He
The voltage and current of input power is detected by input electric cur-rent measure circuit 3, when the output voltage of input voltage detection circuit 2
During less than the output voltage of whole circuit, drive circuit 6 produces pwm signal and controls metal-oxide-semiconductor A3 conducting, and input voltage flows through inductance
Device L1, diode D1 prevent electric capacity C3 from discharging over the ground, owing to input is unidirectional current, so the electric current on inducer L1 is with certain
Ratio is linearly increasing, along with the electric current of inducer L1 increases, stores some energy, now by drive circuit in inducer L1
6 send pwm signal again, make metal-oxide-semiconductor A3 disconnect, and due to the electric current retention performance of inducer L1, flow through the electric current of inducer L1
Zero will not be immediately become, but slowly by value vanishing when charging complete, and original circuit has disconnected, then inducer
L1 can only be discharged by novel circuit, i.e. inductance starts to charge to electric capacity C3, and electric capacity C3 both end voltage raises, and now voltage is the highest
In input voltage；When the output voltage of input voltage detection circuit 2 is higher than the output voltage of whole circuit, drive circuit 6 produces
Raw pwm signal controls metal-oxide-semiconductor A4 conducting, by setting resistance and the burning voltage of stabilivolt D2 of resistance R6, makes input voltage
The output voltage of testing circuit 2 is equal to the output voltage of whole circuit, and this circuit uses drive circuit 6 to provide to many group circuit
Pwm signal is controlled, and improves power density, voltage that drive circuit 6 detects according to input voltage detection circuit 2 and
Electric current that phase place and input electric cur-rent measure circuit 3 detect and phase place thereof, control accounting for of the pwm signal for controlling break-make respectively
Empty ratio so that input and output current ripple can partly or completely be offset, substantially reduces input and the stricture of vagina of output electric current
Ripple, thus reduce the disturbance to input voltage of the whole circuit, reduce the electromagnetic interference of whole circuit, also increase whole electricity
The output voltage on road and the vibration frequency of output electric current, reduce the fluctuation of output voltage, and this circuit has similar BUCK simultaneously
The voltage of the high efficiency of voltage-dropping type correcting circuit, output ripple and low and switching tube and the little advantage of current stress, have again BOOST liter
The High Power Factor advantage of die mould correcting circuit, compensate for the defect of prior art.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace
And modification, the scope of the present invention be defined by the appended.
Claims (6)
1. a composite efficient circuit of power factor correction, including commutator (1), it is characterised in that: described commutator (1)
Input is electrically connected with mains electricity input end mouth, and the outfan of described commutator (1) is electrically connected with input voltage detection circuit
(2) input, the outfan of described input voltage detection circuit (2) is electrically connected with the defeated of input electric cur-rent measure circuit (3)
Entering end, the outfan of described input electric cur-rent measure circuit (3) is electrically connected with the input of booster circuit (4), blood pressure lowering electricity
The input on road (5) and civil power output port, the outfan of described booster circuit (4) and reduction voltage circuit (5) is electrically connected with city
Electricity output port, described input voltage detection circuit (2), input electric cur-rent measure circuit (3), booster circuit (4) and reduction voltage circuit
(5) input is all electrically connected with the outfan of drive circuit (6).
A kind of composite efficient circuit of power factor correction the most according to claim 1, it is characterised in that: described input electricity
Pressure testing circuit (2) includes that the input of resistance R1, described resistance R1 is electrically connected with the outfan of commutator (1), described electricity
The resistance outfan of R1 is also connected to electric capacity C1, resistance R2 and the input of resistance R3, and the outfan of described resistance R3 is also connected to electric capacity
C2 and the input of metal-oxide-semiconductor A1, the equal ground connection of outfan of described electric capacity C1, resistance R2 and electric capacity C2, the output of described metal-oxide-semiconductor A1
End is electrically connected with No. 3 ports of amplifier U1A, and it is defeated that No. 2 of described amplifier U1A and No. 1 port are all electrically connected with voltage
Going out port, No. 4 port ground connection of described amplifier U1A, No. 8 ports of described amplifier U1A are electrically connected with detection positive source.
A kind of composite efficient circuit of power factor correction the most according to claim 1, it is characterised in that: described input electricity
Current detection circuit (3) includes that metal-oxide-semiconductor A2, the input of described metal-oxide-semiconductor A2 are just being electrically connected with input voltage detection circuit (2)
Pole outfan, the outfan of described metal-oxide-semiconductor A2 is also connected to No. 4 ports and the input of resistance R4 of current monitor U2, described
The outfan of resistance R4 is also connected to the cathode output end of input voltage detection circuit (2) and No. 5 ports of current monitor U2, institute
State No. 3 ports of current monitor U2 and be connected to input and the cathode output end mouth of resistance R5, the 2 of described current monitor U2
Number port is also connected to ground wire, the outfan of resistance R5 and cathode output end mouth.
A kind of composite efficient circuit of power factor correction the most according to claim 1, it is characterised in that: described liter of piezoelectricity
Road (4) includes that inducer L1, the input of described inducer L1 are electrically connected with the positive pole output of input electric cur-rent measure circuit (3)
Port, the outfan of described inducer L1 is also connected to input and the input of diode D1 of metal-oxide-semiconductor A3, described diode D1
Outfan and be connected to input and the positive polarity output port of electric capacity C3, the outfan of described electric capacity C3 is also connected to voltage negative
Pole output port, ground wire, the outfan of metal-oxide-semiconductor A3 and the cathode output end mouth of input electric cur-rent measure circuit (3).
A kind of composite efficient circuit of power factor correction the most according to claim 1, it is characterised in that: described blood pressure lowering electricity
Road (5) includes that the input of metal-oxide-semiconductor A4, described metal-oxide-semiconductor A4 is electrically connected with the output port of input electric cur-rent measure circuit (3),
The outfan of described metal-oxide-semiconductor A4 is also connected to input and the colelctor electrode of audion Q1 of resistance R6, the outfan of described resistance R6
And it is connected to base stage and the input of stabilivolt D2 of audion Q1, the output head grounding of described stabilivolt D2, described audion Q1
Emitter stage be electrically connected with voltage output end mouth.
A kind of composite efficient circuit of power factor correction the most according to claim 1, it is characterised in that: described commutator
(1) it is full-bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015536.6A CN106329907A (en) | 2016-11-18 | 2016-11-18 | Compound-type efficient power factor correction (PFC) circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015536.6A CN106329907A (en) | 2016-11-18 | 2016-11-18 | Compound-type efficient power factor correction (PFC) circuit |
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| Publication Number | Publication Date |
|---|---|
| CN106329907A true CN106329907A (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611015536.6A Pending CN106329907A (en) | 2016-11-18 | 2016-11-18 | Compound-type efficient power factor correction (PFC) circuit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1199265A (en) * | 1997-02-03 | 1998-11-18 | 索尼公司 | Battery charger and battery charging method |
| US20040080965A1 (en) * | 2002-10-24 | 2004-04-29 | Poon Franki Ngai Kit | Stepping inductor for fast transient response of switching converter |
| CN101834539A (en) * | 2010-05-27 | 2010-09-15 | 浙江大学 | High-efficiency AC/DC combined converter with wide output voltage range |
| CN105099162A (en) * | 2015-07-06 | 2015-11-25 | 深圳东科半导体有限公司 | Composite type high-efficiency power factor correction circuit |
| CN205123301U (en) * | 2015-09-23 | 2016-03-30 | 天津工业大学 | General type intelligence battery charger |
-
2016
- 2016-11-18 CN CN201611015536.6A patent/CN106329907A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1199265A (en) * | 1997-02-03 | 1998-11-18 | 索尼公司 | Battery charger and battery charging method |
| US20040080965A1 (en) * | 2002-10-24 | 2004-04-29 | Poon Franki Ngai Kit | Stepping inductor for fast transient response of switching converter |
| CN101834539A (en) * | 2010-05-27 | 2010-09-15 | 浙江大学 | High-efficiency AC/DC combined converter with wide output voltage range |
| CN105099162A (en) * | 2015-07-06 | 2015-11-25 | 深圳东科半导体有限公司 | Composite type high-efficiency power factor correction circuit |
| CN205123301U (en) * | 2015-09-23 | 2016-03-30 | 天津工业大学 | General type intelligence battery charger |
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Application publication date: 20170111 |
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