CN102904436A - Novel power factor correction circuit - Google Patents
Novel power factor correction circuit Download PDFInfo
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- CN102904436A CN102904436A CN2012104029014A CN201210402901A CN102904436A CN 102904436 A CN102904436 A CN 102904436A CN 2012104029014 A CN2012104029014 A CN 2012104029014A CN 201210402901 A CN201210402901 A CN 201210402901A CN 102904436 A CN102904436 A CN 102904436A
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- 238000000034 method Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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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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- 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
- H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- 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
-
- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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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
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Abstract
The invention discloses a power factor correction circuit, consisting of a charge pump and an energy-accumulating circuit; the charge pump can consist of only one capacitor and two diodes; the energy-accumulating circuit can consist of only one diode and one inductor; the capacitor external connection end of the charge pump is connected with a high-frequency signal end generated by the switching circuit; the two diodes of the charge pump and the inductor of the energy-accumulating circuit are connected between a rectifier circuit and a power frequency filter capacitor in series; and the diode of the energy-accumulating circuit is connected with the two serially-connected diodes of the charge pump in parallel. The novel power factor correction circuit realizes the power factor correction with the highest quality with the most concise structure and the lowest cost, and is applicable to power circuits of all equipment requiring an alternating current power supply.
Description
Technical field
The invention belongs to field of power supplies, be specifically related to a kind of circuit of power factor correction.
Background technology
Patent of invention " circuit of power factor correction " (patent No.: ZL 201010163269.3) is so that can only just can realize high-quality power factor correction with inductance, electric capacity and diode, its property indices can be compared U.S. with Active Power Factor Correction fully.The core of this patent of invention is charge pump and freewheeling circuit.In essence, be in to the electric capacity repeated charge process of charge pump, occur in the conversion of the electromagnetic energy on the freewheeling circuit inductance.Be this conversion process of energy with charge pump, guarantee that rectifier bridge can both provide charging current to the power frequency filter capacitor in whole power frequency period, realized power factor correction.Essence from this power factor correction process, we make the freewheeling circuit that is comprised of two inductance and two diodes to have obtained the circuit of power factor correction of the better simple structure of present this performance into by an inductance and the accumulator that diode forms into.
Summary of the invention
The purpose of this invention is to provide a kind of circuit of power factor correction that uses charge pump.It need not to increase switching tube without integrated circuit, thus the structure to simplify most, and minimum cost realizes the power factor correction of first water.
A kind of circuit of power factor correction of the present invention is comprised of accumulator and charge pump or charge pump in parallel; Described accumulator is comprised of diode and inductance; Described charge pump is comprised of an electric capacity and two diodes, one end of the negative electrode of the anode of a diode, another diode and an electric capacity is linked together, namely get described charge pump, the other end of described electric capacity is charge pump electric capacity external connection end, and all the other two ends of described two diodes are two diode external connection end of charge pump; In parallel two diode external connection end of several charge pumps, and make its conducting direction consistent, namely get the charge pump of described parallel connection, the diode external connection end of charge pump also connects the gained two ends, be two diode external connection end of charge pump in parallel, the other end of several electric capacity is several electric capacity external connection end of charge pump in parallel; The high-frequency signal end that the external termination of the electric capacity of described charge pump is produced by switching circuit, several high-frequency signal ends that the external termination of several electric capacity of the charge pump of described parallel connection is produced by switching circuit; Two diode external connection end of described charge pump or in parallel charge pump are serially connected between rectification circuit and the power frequency filter capacitor with the inductance of accumulator, and the conducting direction of the diode of the charge pump of charge pump or parallel connection is consistent with the direction of direct current.
Described accumulator is comprised of a diode and an inductance, or is comprised of a diode and two inductance, or is comprised of two diodes and two inductance.
By a diode and the situation that inductance forms, the inductance of accumulator can be connected between charge pump or the in parallel charge pump and power frequency filter capacitor for described accumulator, also can be to be connected between rectification circuit and charge pump or the charge pump in parallel; Two diode external connection end of the diode of described accumulator and charge pump or charge pump in parallel also connect, and the conducting direction of the diode of accumulator is consistent with the direction of direct current.
For described accumulator by two inductance and the situation that diode forms, two inductance of described accumulator are serially connected in respectively the both sides of two diode external connection end of charge pump or in parallel charge pump, two diode external connection end of diode of described accumulator and charge pump or charge pump in parallel are in parallel, and the conducting direction of the diode of described accumulator is consistent with the direction of direct current.
Form situation for described accumulator by two inductance and two diodes, can be divided into again three kinds, the first is: first inductance of described accumulator is serially connected between power frequency filter capacitor and charge pump or the charge pump in parallel, and second inductance of described accumulator is serially connected between rectification circuit and charge pump or the charge pump in parallel; One termination of first diode of described accumulator is toward the output of rectification circuit, and the other end is received on the tie point of diode external connection end of first inductance and charge pump or charge pump in parallel; Second diode, the one termination power frequency filter capacitor of described accumulator, the other end are received on the tie point of diode external connection end of second inductance and charge pump or charge pump in parallel; The conducting direction of two diodes of the described accumulator all direction with direct current is consistent.
Described accumulator by the second situation that two inductance and two diodes form is: first inductance of described accumulator is serially connected between power frequency filter capacitor and charge pump or the charge pump in parallel, and second inductance of described accumulator is serially connected between rectification circuit and charge pump or the charge pump in parallel; Two diode external connection end of first diode of described accumulator and charge pump or charge pump in parallel also connect; Second diode, the one termination power frequency filter capacitor of described accumulator, the other end are received on the tie point of diode external connection end of second inductance and charge pump or charge pump in parallel; The conducting direction of two diodes of the described accumulator all direction with direct current is consistent.
Described accumulator by the third situation that two inductance and two diodes form is: first inductance of described accumulator is serially connected between power frequency filter capacitor and charge pump or the charge pump in parallel, and second inductance of described accumulator is serially connected between rectification circuit and charge pump or the charge pump in parallel; One termination of first diode of described accumulator is toward the output of rectification circuit, and the other end is received on the tie point of diode external connection end of first inductance and charge pump or charge pump in parallel; Two diode external connection end of second diode of described accumulator and charge pump or charge pump in parallel also connect; The conducting direction of two diodes of the described accumulator all direction with direct current is consistent.
Have an electric capacity to be attempted by between the power positive cathode, to guarantee realization to the charge and discharge process of charge pump, this electric capacity can be the part of LC filter circuit.This electric capacity also can be connected on after bridge rectifier and the LC filter circuit as shown in Figure 8, and is before the power frequency filter capacitor, in parallel with the whole circuit that is comprised of accumulator and charge pump diode.
When we charged to capacitor C with a direct voltage U, the voltage on the capacitor C rose to U by 0, and the energy that power supply is confessed is
W=UQ=CU
2，
And the energy that obtains on the capacitor C is
W =∫
U 0 C u du = 1/2 CU
2。
We see half energy consumption being arranged on the line in the charging process.Therefore, we if added voltage suddenlys change repeatedly, when energy is changed mutually so, will have quite a few loss on the line between power supply and electric capacity between two magnitudes of voltage when giving the capacitor charge and discharge of charge pump.This loss often causes heating, even damages element.
If be attempted by on the external connection end of two diodes of this charge pump with the consistent diode of charge pump diode current flow direction with one, and allow this diode in parallel and the mode of inductance to connect, be connected between rectifier bridge and the power frequency filter capacitor.At this moment, when the voltage that adds or electric current during to the capacitor charging (or discharge) of charge pump, on the inductance with current flowing, inductance savings magnetic field energy at this moment.And when the moment that charging (or discharge) finishes, when two diodes of charge pump all end because the electric current on the inductance can not sport zero, so the electric current on the inductance will by way of and the diode that connects continue to flow through, at this moment magnetic field energy changes electric energy into.Here, the issuable energy loss of capacitor charge and discharge to charge pump has not only been avoided in the conversion of this electromagnetic energy on the inductance, also provides extra energy for rectifier bridge to the filter capacitor charging.This energy guarantees that with charge pump rectifier bridge can both provide charging current to the power frequency filter capacitor at whole power frequency period, realizes power factor correction.Here, the inductance of accumulator can be connected between charge pump and the rectifier bridge according to actual conditions, also can be connected between charge pump and the power frequency filter capacitor, if necessary, both sides that also can charge pump respectively connect one, to guarantee that in the process of the capacitor charge and discharge of giving charge pump, sudden change does not appear in voltage on the electric capacity of charge pump.Therefore circuit of power factor correction can have kinds of schemes, but the most basic circuit only has two kinds, as shown in Figures 2 and 3.Other circuit, such as Fig. 4, Fig. 5, Fig. 6, Fig. 7 and circuit shown in Figure 8, can regard as on the basis of these two kinds of basic circuits increases inductance and the resulting circuit of diode.
The present invention consists of the power circuit of actual use with the switching power circuit that is comprised of bridge rectifier, LC filter circuit and switching circuit, comprises AC-AC frequency changer circuit, AC-DC direct current constant-current circuit and AC-DC dc constant voltage circuit and other switching power circuit.For guaranteeing that the LC filter circuit that accesses does not hinder the charge and discharge process of charge pump, there is an electric capacity to be attempted by between the power positive cathode, it can be the part of LC filter circuit.This electric capacity also can be connected between bridge rectifier and LC filter circuit and the power frequency filter capacitor C as shown in Figure 9, and is in parallel with the whole circuit that is comprised of accumulator and charge pump diode.
Adopt the circuit of power factor correction structure of technique scheme to simplify, performance is good and cost is low, can be widely used in the various power circuits with ac power supply.
Description of drawings
Fig. 1 (a) (b) is respectively the circuit diagram of the charge pump of charge pump and parallel connection;
Fig. 2 is the circuit of power factor correction figure in the embodiment of the invention 1;
Fig. 3 is the circuit of power factor correction figure in the embodiment of the invention 2;
Fig. 4 is the circuit of power factor correction figure in the embodiment of the invention 3;
Fig. 5 is the circuit of power factor correction figure in the embodiment of the invention 4;
Fig. 6 is the circuit of power factor correction figure in the embodiment of the invention 5;
Fig. 7 is the circuit of power factor correction figure in the embodiment of the invention 6;
Fig. 8 is the circuit of power factor correction figure in the embodiment of the invention 7;
Fig. 9 is the circuit of power factor correction figure in the embodiment of the invention 8;
Embodiment
The circuit diagram of several charge pumps of charge pump of the present invention and parallel connection as shown in Figure 1.
Circuit of power factor correction of the present invention can have kinds of schemes, but the most basic circuit only has two kinds, such as Fig. 2, shown in Figure 3.Other circuit, such as Fig. 4, Fig. 5, Fig. 6, Fig. 7 and circuit shown in Figure 8, can regard as on the basis of these two kinds of basic circuits increases inductance and the resulting circuit of diode.
[embodiment 1]
The inductance of accumulator be connected between charge pump and the power frequency filter capacitor circuit of power factor correction as shown in Figure 2: this circuit of power factor correction is comprised of a charge pump and an accumulator; Described charge pump is comprised of a capacitor C 1 and two diode D1, D2; Described accumulator is comprised of a diode D3 and an inductance L 1; Two diode D1 of charge pump, the inductance L 1 of D2 and accumulator is serially connected between bridge rectifier and LC filter circuit and the power frequency filter capacitor C, the anode of first diode D1 of described charge pump connects an end of the inductance L 1 of described accumulator, and receive by the other end of this inductance L 1 on the positive output end of bridge rectifier and LC filter circuit, the negative electrode of second diode D2 of described charge pump is received the positive pole of power frequency filter capacitor C, the high-frequency signal end of the external termination switching circuit of the capacitor C 1 of described charge pump, described charge pump is inner, connect the negative electrode of first diode of termination D1 and the anode of second diode D2 in the capacitor C 1, the negative electrode of the diode D3 of described accumulator is received on the negative electrode of second diode D2 of charge pump, and the anode of the diode D3 of described accumulator is received on the anode of first diode D1 of charge pump; A capacitor C 2 of LC filter circuit is attempted by between the power positive cathode.
[embodiment 2]
The inductance of accumulator be connected between charge pump and the rectification circuit circuit of power factor correction as shown in Figure 3: this circuit of power factor correction is comprised of a charge pump and an accumulator; Described charge pump is comprised of a capacitor C 1 and two diode D1, D2; Described accumulator is comprised of a diode D3 and an inductance L 1; The anode of second diode D2 of described charge pump connects an end of the inductance L 1 of described accumulator, and receive by the other end of this inductance L 1 on the negative pole of power frequency filter capacitor C, the negative electrode of first diode D1 of described charge pump is received the negative output terminal of LC filter circuit and rectification circuit, the high-frequency signal end of the external termination switching circuit of the capacitor C 1 of described charge pump, described charge pump is inner, connect the anode of first diode of termination D1 and the negative electrode of second diode D2 in this capacitor C 1, the negative electrode of the diode D3 of described accumulator is received on the negative electrode of first diode D1 of charge pump, the anode of the diode D3 of described accumulator is received on the anode of second diode D2 of charge pump, and a capacitor C 2 of bridge rectifier and LC filter circuit is attempted by between the power positive cathode.
On the basis of these two kinds of basic circuits, accumulator increases inductance and diode, can obtain multiple power factor correcting scheme, for example:
[embodiment 3]
Circuit shown in Figure 3 increases an inductance L 2, two inductance are connected on respectively the charge pump both sides, obtain circuit of power factor correction as shown in Figure 4: the anode of second diode D2 of described charge pump connects an end of first inductance L 1 of described accumulator, and receive by the other end of this inductance L 1 on the negative pole C of power frequency filter capacitor, the high-frequency signal end of the external termination switching circuit of the capacitor C 1 of described charge pump, described charge pump is inner, connect the anode of first diode of termination D1 and the negative electrode of second diode D2 in the capacitor C 1, the negative electrode of the diode D3 of described accumulator is received on the negative electrode of first diode D1 of charge pump, the anode of the diode D3 of described accumulator is received on the anode of second diode D2 of charge pump, a capacitor C 2 of bridge rectifier and LC filter circuit is attempted by between the power positive cathode, and second inductance L 2 of accumulator is connected between the negative electrode of first diode D1 of the negative output terminal of bridge rectifier and LC filter circuit and described charge pump.
[embodiment 4]
Circuit shown in Figure 3 increases an inductance L 2 and a diode D4, obtain circuit of power factor correction as shown in Figure 5: the anode of second diode D2 of described charge pump connects an end of first inductance L 1 of described accumulator, and receive by the other end of this inductance L 1 on the negative pole of power frequency filter capacitor C, the high-frequency signal end of the external termination switching circuit of the capacitor C 1 of described charge pump, described charge pump is inner, connect the anode of first diode of termination D1 and the negative electrode of second diode D2 in this capacitor C 1, the negative electrode of the diode D3 of described accumulator is received the negative output terminal of LC filter circuit and rectification circuit, the anode of the diode D3 of described accumulator is received on the anode of second diode D2 of charge pump, increase by second inductance L 2, be connected between the negative electrode of first diode D1 of the negative output terminal of LC filter circuit and rectification circuit and described charge pump, increase a diode D4, its anode connects the negative pole of power frequency filter capacitor C, its negative electrode connects the negative electrode of first diode D1 of described charge pump, and a capacitor C 2 of bridge rectifier and LC filter circuit is attempted by between the power positive cathode.
[embodiment 5]
Circuit shown in Figure 3 increases an inductance L 2 and a diode D4, obtain circuit of power factor correction as shown in Figure 6: the anode of second diode D2 of described charge pump connects an end of first inductance L 1 of described accumulator, and receive by the other end of this inductance L 1 on the negative pole of power frequency filter capacitor C, the high-frequency signal end of the external termination switching circuit of the capacitor C 1 of described charge pump, described charge pump is inner, connect the anode of first diode of termination D1 and the negative electrode of second diode D2 in this capacitor C 1, the negative electrode of the diode D3 of described accumulator is received on the negative electrode of first diode D1 of charge pump, the anode of the diode D3 of described accumulator is received on the anode of second diode D2 of charge pump, increase by second inductance L 2, be connected between the negative electrode of first diode D1 of the negative output terminal of LC filter circuit and rectification circuit and described charge pump, increase a diode D4, its anode connects the negative pole of power frequency filter capacitor C, its negative electrode connects the negative electrode of first diode D1 of described charge pump, and a capacitor C 2 of bridge rectifier and LC filter circuit is attempted by between the power positive cathode.
[embodiment 6]
Circuit shown in Figure 3 increases an inductance L 2 and a diode D4, obtain circuit of power factor correction as shown in Figure 6: the anode of second diode D2 of described charge pump connects an end of first inductance L 1 of described accumulator, and receive by the other end of this inductance L 1 on the negative pole of power frequency filter capacitor C, the high-frequency signal end of the external termination switching circuit of the capacitor C 1 of described charge pump, described charge pump is inner, connect the anode of first diode of termination D1 and the negative electrode of second diode D2 in this capacitor C 1, the negative electrode of the diode D3 of described accumulator is received the negative output terminal of LC filter circuit and rectification circuit, the anode of the diode D3 of described accumulator is received on the anode of second diode D2 of charge pump, increase by second inductance L 2, be connected between the negative electrode of first diode D1 of the negative output terminal of LC filter circuit and rectification circuit and described charge pump, increase a diode D4, its anode connects the anode of second diode D2 of described charge pump, its negative electrode connects the negative electrode of first diode D1 of described charge pump, and a capacitor C 2 of bridge rectifier and LC filter circuit is attempted by between the power positive cathode.
Above-mentioned six kinds of circuit of power factor correction all are comprised of a charge pump and accumulator, and circuit of power factor correction can also be comprised of charge pump and the accumulator of parallel connection.The circuit of power factor correction that forms such as a kind of two charge pumps by parallel connection and accumulator as shown in Figure 8.
[embodiment 7]
As shown in Figure 8 by two charge pumps and the circuit of power factor correction that accumulator forms of parallel connection: two charge pumps of described parallel connection are comprised of two capacitor C 11, C12 and four diode D11, D12, D21, D22; Described accumulator is comprised of a diode D3 and an inductance L 1; Two diode D21 of two charge pumps of described parallel connection, the anode of D22 is all received an end of the inductance L 1 of described accumulator, and receive by the other end of this inductance L 1 on the negative pole of power frequency filter capacitor C, two other diode D12 of two charge pumps of described parallel connection, the negative electrode of D12 is all received the negative output terminal of LC filter circuit and rectification circuit, two external connection end of the capacitor C 11 of described charge pump and C12 connect respectively two high-frequency signal ends of switching circuit, described charge pump is inner, connect the anode of first diode of termination D11 and the negative electrode of second diode D21 in this capacitor C 11, connect the anode of first diode of termination D12 and the negative electrode of second diode D22 in the capacitor C 12, the negative electrode of the diode D3 of described accumulator is received on the negative electrode of first diode D1 of charge pump, the anode of the diode D3 of described accumulator is received on the anode of second diode D2 of charge pump, and a capacitor C 2 of bridge rectifier and LC filter circuit is attempted by between the power positive cathode.
In above-mentioned seven kinds of circuit, the capacitor C 2 that is attempted by between the power positive cathode does not hinder the charge and discharge process of charge pump in order to guarantee the high-frequency filter circuit that accesses, and it can be the part of LC filter circuit.This electric capacity also can be connected between bridge rectifier and LC filter circuit and the power frequency filter capacitor C as shown in Figure 9, and is in parallel with the whole circuit that is comprised of accumulator and charge pump diode.
[embodiment 8]
A kind of circuit of power factor correction scheme that Fig. 9 provides: the anode of second diode D2 of described charge pump connects an end of the inductance L 1 of described accumulator, and receive by the other end of this inductance L 1 on the negative pole of power frequency filter capacitor C, the negative electrode of first diode D1 of described charge pump is received the negative output terminal of LC filter circuit and rectification circuit, the high-frequency signal end of the external termination switching circuit of the capacitor C 1 of described charge pump, described charge pump is inner, connect the anode of first diode of termination D1 and the negative electrode of second diode D2 in this capacitor C 1, the negative electrode of the diode D3 of described accumulator is received on the negative electrode of first diode D1 of charge pump, the anode of the diode D3 of described accumulator is received on the anode of second diode D2 of charge pump, and capacitor C 2 is connected between the negative pole of the negative output terminal of bridge rectifier and LC filter circuit and power frequency filter capacitor.
The principle of foregoing circuit all is to utilize the transfer process of the electromagnetic energy that occurs on the inductance of accumulator when discharging and recharging to charge pump, guarantees that rectifier bridge can both provide charging current to the power frequency filter capacitor at whole power frequency period, realizes power factor correction.Certainly, according to concrete needs, directly increase charge pump, increase the connection that accumulator can also be combined into the multiple power factor correcting circuit.
The present invention is applicable to the power circuit of all ac power supplies, comprises AC-AC frequency changer circuit, AC-DC direct current constant-current circuit, AC-DC dc constant voltage circuit and other switching power circuit.Adopt LED driving power experimental circuit of the present invention 20 watts as example take one, recording its ac power input end power factor is λ=0.985, and the limit value of the measured data of input current each harmonic and the countries concerned's standard code is:
Harmonic number 2 times 3 times 5 times 7 times 9 times 11 ~ 39 times
Measured data 0.3% 13.5% 4.2% 1.5% 1.1%＜1.3%
Relevant criterion 2% 30 * λ % 10% 7% 5% 3%
Obviously, performance index are better than the performance requirement of the countries concerned's standard greatly.
We see that the structure of the circuit of power factor correction that the present invention provides is simplified most, and cost is minimum, and the performance index that reach are best.
Claims (10)
1. circuit of power factor correction is characterized in that: this circuit is comprised of accumulator and charge pump or charge pump in parallel; Described accumulator is comprised of diode and inductance; Described charge pump is comprised of an electric capacity and two diodes, one end of the negative electrode of the anode of a diode, another diode and an electric capacity is linked together, namely get described charge pump, the other end of described electric capacity is charge pump electric capacity external connection end, and all the other two ends of described two diodes are two diode external connection end of charge pump; In parallel two diode external connection end of several charge pumps, and make its conducting direction consistent, namely get the charge pump of described parallel connection, the diode external connection end of charge pump also connects the gained two ends, be two diode external connection end of charge pump in parallel, the other end of several electric capacity is several electric capacity external connection end of charge pump in parallel; The high-frequency signal end that the external termination of the electric capacity of described charge pump is produced by switching circuit, several high-frequency signal ends that the external termination of several electric capacity of the charge pump of described parallel connection is produced by switching circuit; Two diode external connection end of described charge pump or in parallel charge pump are serially connected between rectification circuit and the power frequency filter capacitor with the inductance of accumulator, and the conducting direction of the diode of the charge pump of charge pump or parallel connection is consistent with the direction of direct current.
2. circuit of power factor correction according to claim 1 is characterized in that, described accumulator is comprised of a diode and an inductance, or is comprised of a diode and two inductance, or is comprised of two diodes and two inductance.
3. circuit of power factor correction according to claim 2, it is characterized in that: described accumulator is comprised of a diode and an inductance, the inductance of accumulator can be connected between charge pump or the in parallel charge pump and power frequency filter capacitor, also can be to be connected between rectification circuit and charge pump or the charge pump in parallel; Two diode external connection end of the diode of described accumulator and charge pump or charge pump in parallel also connect, and the conducting direction of the diode of the accumulator also direction with direct current is consistent.
4. power factor correction correcting circuit according to claim 2, it is characterized in that: described accumulator is comprised of two inductance and a diode, two inductance of described accumulator are serially connected in respectively the both sides of two diode external connection end of charge pump or in parallel charge pump, two diode external connection end of diode of described accumulator and charge pump or charge pump in parallel are in parallel, and the conducting direction of the diode of the described accumulator also direction with direct current is consistent.
5. circuit of power factor correction according to claim 2, it is characterized in that: described accumulator is comprised of two inductance and two diodes; First inductance of described accumulator is serially connected between power frequency filter capacitor and charge pump or the charge pump in parallel, and second inductance of described accumulator is serially connected between rectification circuit and charge pump or the charge pump in parallel; One termination of first diode of described accumulator is toward the output of rectification circuit, and the other end is received on the tie point of diode external connection end of first inductance and charge pump or charge pump in parallel; Second diode, the one termination power frequency filter capacitor of described accumulator, the other end are received on the tie point of diode external connection end of second inductance and charge pump or charge pump in parallel; The conducting direction of two diodes of the described accumulator all direction with direct current is consistent.
6. circuit of power factor correction according to claim 2, it is characterized in that: described accumulator is comprised of two inductance and two diodes; First inductance of described accumulator is serially connected between power frequency filter capacitor and charge pump or the charge pump in parallel, and second inductance of described accumulator is serially connected between rectification circuit and charge pump or the charge pump in parallel; Two diode external connection end of first diode of described accumulator and charge pump or charge pump in parallel also connect; Second diode, the one termination power frequency filter capacitor of described accumulator, the other end are received on the tie point of diode external connection end of second inductance and charge pump or charge pump in parallel; The conducting direction of two diodes of the described accumulator all direction with direct current is consistent.
7. circuit of power factor correction according to claim 2, it is characterized in that: described accumulator is comprised of two inductance and two diodes; First inductance of described accumulator is serially connected between power frequency filter capacitor and charge pump or the charge pump in parallel, and second inductance of described accumulator is serially connected between rectification circuit and charge pump or the charge pump in parallel; One termination of first diode of described accumulator is toward the output of rectification circuit, and the other end is received on the tie point of diode external connection end of first inductance and charge pump or charge pump in parallel; Two diode external connection end of second diode of described accumulator and charge pump or charge pump in parallel also connect; The conducting direction of two diodes of the described accumulator all direction with direct current is consistent.
8. power circuit, the circuit that comprises bridge rectifier and LC filter circuit and contain switching tube is characterized in that, the circuit of power factor correction that this power circuit one of comprises among the claim 1-7.
9. power circuit according to claim 8, it is characterized in that, an electric capacity of LC filter circuit is connected between the both positive and negative polarity, perhaps is connected between bridge rectifier and LC filter circuit and the power frequency filter capacitor, and is in parallel with the whole circuit that is comprised of accumulator and charge pump diode.
10. equipment by ac power supply, its power circuit is claim 8 or 9 described power circuits.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210402901.4A CN102904436B (en) | 2012-10-22 | 2012-10-22 | A kind of Novel power factor correction circuit |
| PCT/CN2013/085414 WO2014063591A1 (en) | 2012-10-22 | 2013-10-17 | Power factor correction circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210402901.4A CN102904436B (en) | 2012-10-22 | 2012-10-22 | A kind of Novel power factor correction circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102904436A true CN102904436A (en) | 2013-01-30 |
| CN102904436B CN102904436B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210402901.4A Active CN102904436B (en) | 2012-10-22 | 2012-10-22 | A kind of Novel power factor correction circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102904436B (en) |
| WO (1) | WO2014063591A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014063591A1 (en) * | 2012-10-22 | 2014-05-01 | Zhang Yixing | Power factor correction circuit |
| CN107580749A (en) * | 2015-03-13 | 2018-01-12 | 佩里格林半导体公司 | DC‑DC Transformer with Inductor for Facilitating Charge Transfer Between Capacitors Adiabatically |
| US11901817B2 (en) | 2013-03-15 | 2024-02-13 | Psemi Corporation | Protection of switched capacitor power converter |
| US12107495B2 (en) | 2015-07-08 | 2024-10-01 | Psemi Corporation | Switched-capacitor power converters |
| US12212232B2 (en) | 2013-03-15 | 2025-01-28 | Psemi Corporation | Power supply for gate driver in switched-capacitor circuit |
| US12341424B2 (en) | 2011-05-05 | 2025-06-24 | Psemi Corporation | Power converters with modular stages |
| US12381482B2 (en) | 2011-05-05 | 2025-08-05 | Psemi Corporation | Power converter with modular stages connected by floating terminals |
| US12438135B2 (en) | 2011-10-18 | 2025-10-07 | Psemi Corporation | Multilayer power, converter with devices having reduced lateral current |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020120562A1 (en) | 2018-12-13 | 2020-06-18 | Danmarks Tekniske Universitet | Ac-dc power converter with power factor correction |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2014063591A1 (en) | 2014-05-01 |
| CN102904436B (en) | 2016-01-20 |
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