CN106411117A - Active power factor correction circuit and starting method thereof - Google Patents
Active power factor correction circuit and starting method thereof Download PDFInfo
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- CN106411117A CN106411117A CN201611031228.2A CN201611031228A CN106411117A CN 106411117 A CN106411117 A CN 106411117A CN 201611031228 A CN201611031228 A CN 201611031228A CN 106411117 A CN106411117 A CN 106411117A
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- 238000005070 sampling Methods 0.000 claims abstract description 87
- 238000001514 detection method Methods 0.000 claims abstract description 29
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- 230000005611 electricity Effects 0.000 claims description 12
- 238000011897 real-time detection Methods 0.000 claims description 6
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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
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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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- Dc-Dc Converters (AREA)
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Abstract
The invention discloses an active power factor correction circuit, comprising: the device comprises a rectification module, a boosting module, a sampling module, a zero-crossing detection module and a controller; the rectifying module is used for rectifying and filtering the input alternating current to output direct current to the boosting module; the zero-crossing detection module is used for generating a switching signal when detecting that the absolute value of the instantaneous value of the alternating current output by the alternating current power supply is smaller than a preset threshold value, and outputting the switching signal to the controller; the control module is used for receiving the switching signal and receiving a sampling signal sent by the sampling module to reach a preset second threshold value during the starting period of the active power factor correction circuit, and generating a driving signal according to the sampling signal to be output to the boosting module so as to control the working mode of the boosting module. The invention also provides a starting method of the active power factor correction circuit. The embodiment of the invention can effectively improve the safety of the APFC circuit.
Description
Technical field
The present invention relates to power factor correction technology field, more particularly, to a kind of APFC and its open
Dynamic method.
Background technology
Traditional APFC (Active Power Factor Corrector, APFC) generally by
Rectification module 11, boost module 12, sampling module 13 and controller 14 form, as shown in figure 1, its operation principle is：By adopting
Egf block 13 is sampled to the output voltage signal of described boost module 12 and current signal, obtains sampled voltage signal and adopts
Sample current signal simultaneously exports to described controller 14；Described controller 14 is according to described sampled voltage signal and sampled current signals
Calculate the dutycycle of drive signal, and export described drive signal to described boost module 12, thus controlling described boost module
12 switching tube Q1On or off so that the change of the input current phase tracking input voltage of described boost module 12, from
And suppress harmonic current, improve power factor value.The soft starting mode of traditional APFC circuit mainly takes control to drive letter
Number dutycycle by the little mode becoming larger or altofrequency Starting mode.
However, inventor is in implementing the present invention, it may, the soft starting mode of the existing APFC circuit of discovery is at least deposited
In problems with：In the moment starting, PFC output voltage is not yet set up, due to will charge to bulky capacitor, by PFC inductance
Electric current compares larger；If the moment that on and off switch is connected is at the peak value of sine wave, now PFC output voltage connects very much
Nearly power supply crest voltage, lead to PFC inductance inverse electromotive force voltage very little it is impossible to realize magnetic reset, therefore, several work
The DC stacked serious even saturation of PFC inductance after cycle, the electric current flowing through PFC switching tube will lose restriction, thus often damaging
Bad switching tube.
Content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of APFC, had by controlling
Pulse output time during active power factor correction circuit start, it is to avoid the instantaneous large-current during startup is to switching device
Damage, thus effectively improving the safety of circuit.
The present invention provides a kind of APFC, including：Rectification module, boost module, sampling module, mistake
Zero detection module and controller；
Described rectification module be used for input alternating current carry out rectifying and wave-filtering to obtain unidirectional current, and will obtain described in
Direct current electricity output is to described boost module；
Described sampling module is used for carrying out real-time sampling to obtain sampled signal to the output signal of described boost module；
Described zero passage detection module is used for the instantaneous value of alternating current described in real-time detection, and described alternating current is being detected
When the absolute value of instantaneous value is less than a default first threshold, generates a switching signal and export to described controller；
Described controller, during starting in described APFC, receives described switching signal
And when receiving the sampled signal that described sampling module sends and reaching a default Second Threshold, generated according to described sampled signal
Drive signal exports to described boost module, to control the mode of operation of described boost module；Wherein, described mode of operation includes
Charge mode and discharge mode.
In such scheme, during starting in described APFC, the alternating current of detection input, control
The absolute value driving the instantaneous value that output time is described alternating current making described controller is less than a default first threshold
Interval, it is to avoid described APFC starts at the crest voltage of described alternating current, leads to described liter of pressing mold
Inductive current moment increase in block is even up to saturation and damages the switching tube of described boost module, therefore, it is possible to effectively carry
The safety of high described APFC.
Preferably, described sampling module includes voltage sampling circuit and current sampling circuit；
Described voltage sampling circuit, for carrying out real-time sampling to be adopted to the output voltage signal of described boost module
Sample voltage signal；
Described current sampling circuit, for carrying out real-time sampling to be adopted to the output current signal of described boost module
Sample current signal.
In this preferred version, the output voltage according to described boost module and the value of feedback of output current control for controlling
The dutycycle of the drive signal of the break-make of the switching tube of described boost module, makes the input current Phase Tracking of described boost module
Input voltage changes, thus suppressing harmonic current, improves power factor value.
Preferably, described Second Threshold includes second voltage threshold value and the second current threshold；
Described controller specifically for：
During described APFC starts, receive and open described in described zero passage detection module transmission
OFF signal and receive that the sampled voltage signal that described voltage sampling circuit sends reaches second voltage threshold value and described electric current is adopted
When the sampled current signals that sample circuit sends reach the second current threshold, according to described sampled voltage signal and sampled current signals
Calculate the dutycycle of drive signal, and generate described drive signal and export to described boost module, to control described boost module
Mode of operation.
In this preferred version, control the absolute value driving the instantaneous value that output time is described alternating current of described controller
Interval less than a default first threshold, it is to avoid described APFC is in the crest voltage of described alternating current
Place starts, and leads to the increase of the inductive current moment in described boost module to be even up to saturation and damage opening of described boost module
Guan Guan.
Preferably, described boost module includes an inductance, a switching tube, a diode and an electric capacity；
Described boost module has current input terminal, the first positive output end, the first negative output terminal and signal input part；
One end of described inductance is the current input terminal of described boost module, and the other end of described inductance connects described switch
The outfan of pipe and the anode of described diode；The common port of described switching tube connects the negative pole of described electric capacity, described diode
Negative electrode connect described electric capacity positive pole；First positive output end of the just extremely described boost module of described electric capacity, described electric capacity
Negative pole be described boost module the first negative output terminal, the control end of described switching tube is the signal input of described boost module
End.
Preferably, described voltage sampling circuit is made up of the first resistor being connected in series and second resistance；
Described voltage sampling circuit has the first positive input terminal, the first negative input end and the first outfan；
The common port of described first resistor and second resistance is the first outfan of described voltage sampling circuit；Described first
The other end of resistance is the first positive input terminal of described voltage sampling circuit, connects the first positive output end of described boost module；
The other end of described second resistance is the first negative input end of described voltage sampling circuit, and connect described boost module first is negative
Outfan.
Preferably, described current sampling circuit includes 3rd resistor；
Described current sampling circuit has the second input and the second outfan；
One end of described 3rd resistor is the second input of described current sampling circuit, connects the of described boost module
One negative output terminal；The other end of described 3rd resistor is the second outfan of described current sampling circuit.
Preferably, described zero passage detection module has the first ac input end, the second ac input end and the 3rd outfan；
Alternating current power supply is connected between first ac input end of described zero passage detection module and the second ac input end；Described
Zero passage detection module exports described switching signal to described controller through described 3rd outfan.
Preferably, described controller has voltage sample end, current sample end, the 4th input and the 4th outfan；
The voltage sample end of described controller connects the first outfan of described voltage sampling circuit；The electricity of described controller
Stream sampling end connects the second outfan of described current sampling circuit；4th input of described controller connects described zero passage inspection
Survey the 3rd outfan of module；4th outfan of described controller connects the signal input part of described boost module.
Preferably, described rectification module includes the full-bridge rectifier being made up of four diodes parallel with one another；
It is negative that described full-bridge rectifier has the 3rd ac input end, the 4th ac input end, the second positive output end and second
Outfan；
Described alternating current power supply is connected between 3rd ac input end of described full-bridge rectifier and the 4th ac input end；Institute
The second positive output end stating full-bridge rectifier connects the current input terminal of described boost module；The second of described full-bridge rectifier is negative
Outfan connects the second outfan of described current sampling circuit.
The present invention also provides a kind of startup method of APFC, comprises the steps：
Rectifying and wave-filtering is carried out to obtain unidirectional current to the alternating current of input, and will be extremely active for the described direct current electricity output obtaining
The boost module of circuit of power factor correction；
Real-time sampling is carried out to obtain sampled signal to the output signal of described boost module；
The instantaneous value of alternating current described in real-time detection, and the absolute value in the instantaneous value described alternating current is detected is less than one
During default first threshold, generate a switching signal；
When the described sampled signal generating described switching signal and obtain in real time reaches a default Second Threshold, according to
Described sampled signal generates drive signal and exports to described boost module, to control the mode of operation of described boost module；Wherein,
Described mode of operation includes charge mode and discharge mode.
APFC and its startup method that the present invention provides, have the advantages that：By
During described APFC starts, the alternating current of detection input, when controlling the driving of described controller to export
The absolute value carving the instantaneous value for described alternating current is less than the interval of a default first threshold, it is to avoid described active power factor
Correcting circuit starts at the crest voltage of described alternating current, leads to the inductive current moment in described boost module to increase even
Reach saturation and damage the switching tube of described boost module, therefore, it is possible to effectively improve described APFC
Safety.
Brief description
In order to be illustrated more clearly that technical scheme, below by the accompanying drawing work to use required in embodiment
Simply introduce it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of traditional APFC that the present invention provides.
Fig. 2 is the structural representation of the embodiment of APFC that the present invention provides.
Fig. 3 is the circuit diagram of the embodiment of APFC that the present invention provides.
Fig. 4 is the working timing figure of APFC provided in an embodiment of the present invention.
Fig. 5, is that the flow process of the embodiment of the startup method of APFC that the present invention provides is shown
It is intended to.
Specific embodiment
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
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 2, be the structural representation of the embodiment of APFC that the present invention provides.
The embodiment of the present invention provides a kind of APFC 20, including：Rectification module 21, boost module
22nd, sampling module 23, zero passage detection module 24 and controller 25；Specific as follows：
Described rectification module 21 is used for the alternating current AC of input being carried out with rectifying and wave-filtering to obtain unidirectional current, and will obtain
Described direct current electricity output is to described boost module 22.
Described sampling module 23 is used for the output signal of described boost module 22 being carried out with real-time sampling to obtain sampling letter
Number.
Described zero passage detection module 24 is used for the instantaneous value of alternating current AC described in real-time detection, and described exchange is being detected
When the absolute value of the instantaneous value of electric AC is less than a default first threshold, generates a switching signal and export to described controller
25.
Described controller 25, during starting in described APFC 20, receives described switch
Signal and when receiving the sampled signal that described sampling module 23 sends and reaching a default Second Threshold, according to described sampling letter
Number generate drive signal export to described boost module 22, to control the mode of operation of described boost module 22；Wherein, described work
Operation mode includes charge mode and discharge mode.
Preferably, described sampling module 23 includes voltage sampling circuit 231 and current sampling circuit 232；
Described voltage sampling circuit 231, for the output voltage signal of described boost module 22 is carried out real-time sampling with
Obtain sampled voltage signal；
Described current sampling circuit 232, for the output current signal of described boost module 22 is carried out real-time sampling with
Obtain sampled current signals.
Therefore, described Second Threshold includes second voltage threshold value and the second current threshold；
Described controller 25 specifically for：
During described APFC 20 starts, receive the institute that described zero passage detection module 24 sends
State switching signal and receive the sampled voltage signal that described voltage sampling circuit 231 sends and reach second voltage threshold value and described
The sampled current signals that current sampling circuit 232 sends are when reaching the second current threshold, according to described sampled voltage signal with adopt
Sample current signal calculates the dutycycle of drive signal, and generates described drive signal and export to described boost module 22, to control
The mode of operation of described boost module 22.
Wherein, described second voltage threshold value and the second current threshold are that the described controller 25 of triggering generates having of drive signal
Effect condition, these can be configured according to actual needs, and the present invention is not restricted.
It should be noted that described controller 25 can make described liter by suitably tuning up the dutycycle of described drive signal
Die block 22 quickly sets up stable output voltage, can shorten the power supply setup time of product, will especially for opening the machine time
The product asked.
It is understood that described zero passage detection module 24 can be connected to described controller 25 by a switching device；?
During described APFC starts, namely before described boost module 22 sets up stable output voltage, connect
Leading to described switching device makes described zero passage detection module 24 be connected with the foundation of described controller 25, and builds in described boost module 22
After vertical stable output voltage, disconnect the connection between them.
See also Fig. 3, in an embodiment of the invention, described boost module 22 includes an inductance L1, one switch
Pipe Q1, a diode VD1And an electric capacity C1；
Described boost module 22 has current input terminal, the first positive output end, the first negative output terminal and signal input part；
Described inductance L1One end be described boost module 22 current input terminal, described inductance L1The other end connect institute
State switching tube Q1Outfan and described diode VD1Anode；Described switching tube Q1Common port connect described electric capacity C1Negative
Pole, described diode VD1Negative electrode connect described electric capacity C1Positive pole；Described electric capacity C1Just extremely described boost module 22
First positive output end, described electric capacity C1Negative pole be described boost module 22 the first negative output terminal, described switching tube Q1Control
Hold the signal input part for described boost module 22.
In the middle of being embodied as, described switching tube Q1 can be the control of audion, field effect transistor, IGBT, IGCT etc. three end
Device processed or its derivation device.Wherein, the control end of switching tube Q1, common port and outfan, can correspond respectively to audion
Base stage, emitter stage, colelctor electrode, the grid of field effect transistor, source electrode, drain electrode, the grid of IGBT, emitter stage, colelctor electrode, unidirectional crystalline substance
The grid of brake tube, negative electrode, anode, the grid of bidirectional thyristor, port 1, port 2.
Further, described voltage sampling circuit 231 is by first resistor R being connected in series1With second resistance R2Composition；
Described voltage sampling circuit 231 has the first positive input terminal, the first negative input end and the first outfan；
Described first resistor R1With second resistance R2Common port be described voltage sampling circuit 231 the first outfan；Institute
State first resistor R1The other end be described voltage sampling circuit 231 the first positive input terminal, connect described boost module 22
First positive output end；Described second resistance R2The other end be described voltage sampling circuit 231 the first negative input end, connect institute
State the first negative output terminal of boost module 22.
In the middle of being embodied as, described first resistor R1With second resistance R2Composition divider resistance, from described boost module 22
Output voltage take a part of voltage output to described control module 25 to make reference.
Further, described current sampling circuit 232 includes 3rd resistor R3；
Described current sampling circuit 232 has the second input and the second outfan；
Described 3rd resistor R3One end be described current sampling circuit 232 the second input, connect described liter of pressing mold
First negative output terminal of block 22；Described 3rd resistor R3The other end be described current sampling circuit 232 the second outfan.
In the middle of being embodied as, described 3rd resistor R of connecting in the loop of described boost module 223, by detection institute
State 3rd resistor R3The electric current in place loop, the output current as described boost module 22 exports to described controller 25 to do
Reference.
Further, to have the first ac input end, the second ac input end and the 3rd defeated for described zero passage detection module 24
Go out end；
Alternating current power supply is connected between first ac input end of described zero passage detection module 24 and the second ac input end；Institute
State zero passage detection module 24 and export described switching signal to described controller 25 through described 3rd outfan.
Further, described controller 25 has voltage sample end, current sample end, the 4th input and the 4th output
End；
The voltage sample end of described controller 25 connects the first outfan of described voltage sampling circuit 231；Described control
The current sample end of device 25 connects the second outfan of described current sampling circuit 232；4th input of described controller 25
Connect the 3rd outfan of described zero passage detection module 24；4th outfan of described controller 25 connects described boost module 22
Signal input part.
Preferably, described controller 25 can adopt TMS320F28023 chip, provides required multiple function ports, realizes
The process of signal and transmission.Certainly, described controller 25 can also be using well known to a person skilled in the art additive method, these
All within protection scope of the present invention, this is not restricted.
Further, described rectification module 21 includes the full-bridge rectifier B being made up of four diodes parallel with one another1；
Described full-bridge rectifier B1There is the 3rd ac input end, the 4th ac input end, the second positive output end and second
Negative output terminal；
Described full-bridge rectifier B1The 3rd ac input end and the 4th ac input end between connect described alternating current power supply；
Described full-bridge rectifier B1Second positive output end connect described boost module 22 current input terminal；Described full-bridge rectifier B1
Second negative output terminal connect described current sampling circuit 232 the second outfan.
When being embodied as, because described alternating current AC (being assumed to be sine wave) is in 2 points of 90 degree and 270 degree of phase angle
It is respectively the positive amplitude point maximum with negative amplitude, and 0 degree (or 360 degree) and 180 degree are no-voltage point.Connecting described exchange
The moment of power supply, the phase angle of described alternating current AC is likely to be 0 degree～360 degree of any point.If in described alternating current
Connect at the crest voltage in source, the output voltage due to connecting boost module 22 described in moment is not yet set up, first to described boosting
The filter capacitor C of module 221Charge, now the output voltage closely crest voltage of described boost module 22, leads to work as institute
State the switching tube Q of boost module 221Inductance L during cut-off1Inverse electromotive force voltage very little it is impossible to realize described inductance L1's
Magnetic reset, so that work as described switching tube Q1Described inductance L during conducting1The serious even saturation of electric current superposition；In described inductance
L1In the case of magnetically saturated, flow through described switching tube Q1Electric current will lose restriction, and then be easily damaged switching tube Q1.
See also Fig. 4, for avoiding the instantaneous large-current pair during described APFC 20 startup
Described switching tube Q1Damage, described alternating current AC is first detected by described zero passage detection module 24, when detect described alternating current
The absolute value of the instantaneous value of AC is less than described first threshold and receives the sampled voltage letter that described voltage sampling circuit 231 sends
Number reach second voltage threshold value and when sampled current signals that described current sampling circuit 232 sends reach the second current threshold,
Described controller 25 generates drive signal and exports to described switching tube Q1, then described inductance L1Inverse electromotive force voltage be V_
OUT-V_IN, and now V_IN is the voltage of very little, or even close to no-voltage, therefore, described inductance L1Inverse electromotive force
Voltage is sufficiently large, can effectively ensure described inductance L1Magnetic reset, thus avoid described inductance L1Instantaneous large-current open to described
Close pipe Q1Damage, effectively increase the safety of described APFC 20.
It should be noted that described first threshold is the numerical value close to zero, such as 0.5V, 1V, 1.5V etc., these can root
Factually the needs on border are configured, and the present invention is not particularly limited.
Further, the present invention also provides a kind of startup method of APFC.
Refer to Fig. 5, be an embodiment of the startup method of APFC that the present invention provides
Schematic flow sheet.
The embodiment of the present invention provides a kind of startup method of APFC, including step S51～S54,
Specific as follows：
S51, carries out rectifying and wave-filtering to obtain unidirectional current to the alternating current of input, and by the described direct current electricity output obtaining extremely
The boost module of APFC.
S52, carries out real-time sampling to obtain sampled signal to the output signal of described boost module.
S53, the instantaneous value of alternating current described in real-time detection, and little in the absolute value of the instantaneous value described alternating current is detected
When a default first threshold, generate a switching signal.
S54, when the described sampled signal generating described switching signal and obtain in real time reaches a default Second Threshold,
Generate drive signal according to described sampled signal to export to described boost module, to control the mode of operation of described boost module.
Wherein, described mode of operation includes charge mode and discharge mode.
Preferably, described APFC is the active power factor school of the embodiment description shown in Fig. 1
Positive circuit 20, therefore, all flow processs of the startup method of the APFC of the embodiment of the present invention can be by Fig. 1 institute
Executing, the embodiment of the present invention will not be described here the APFC 20 of the embodiment description shown.
APFC and its startup method that the present invention provides, have the advantages that：By institute
During stating APFC startup, the alternating current of detection input, control the driving output time of described controller
Absolute value for the instantaneous value of described alternating current is less than the interval of a default first threshold, it is to avoid described active power factor school
Positive circuit starts at the crest voltage of described alternating current, leads to the inductive current moment in described boost module to increase and even reaches
Damage the switching tube of described boost module to saturation, therefore, it is possible to effectively improve described APFC
Safety.
Above disclosed be only a kind of preferred embodiment of the present invention, certainly the power of the present invention can not be limited with this
Sharp scope, one of ordinary skill in the art will appreciate that realize all or part of flow process of above-described embodiment, and according to present invention power
Profit requires made equivalent variations, still falls within the scope that invention is covered.
One of ordinary skill in the art will appreciate that realizing all or part of flow process in above-described embodiment method, it is permissible
Instruct related hardware to complete by computer program, described program can be stored in a computer read/write memory medium
In, this program is upon execution, it may include as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
Claims (10)
1. a kind of APFC is it is characterised in that include：Rectification module, boost module, sampling module, mistake
Zero detection module and controller；
Described rectification module is used for the alternating current of input being carried out with rectifying and wave-filtering to obtain unidirectional current, and the described direct current that will obtain
Electricity output is to described boost module；
Described sampling module is used for carrying out real-time sampling to obtain sampled signal to the output signal of described boost module；
Described zero passage detection module is used for the instantaneous value of alternating current described in real-time detection, and the instantaneous of described alternating current is being detected
When the absolute value of value is less than a default first threshold, generates a switching signal and export to described controller；
Described controller, during starting in described APFC, receives described switching signal and connects
When receiving the sampled signal that described sampling module sends and reaching a default Second Threshold, generated according to described sampled signal and drive
Signal output extremely described boost module, to control the mode of operation of described boost module；Wherein, described mode of operation includes charging
Pattern and discharge mode.
2. APFC as claimed in claim 1 is it is characterised in that described sampling module includes voltage adopts
Sample circuit and current sampling circuit；
Described voltage sampling circuit, for carrying out real-time sampling to obtain sampling electricity to the output voltage signal of described boost module
Pressure signal；
Described current sampling circuit, for carrying out real-time sampling to obtain sampling electricity to the output current signal of described boost module
Stream signal.
3. APFC as claimed in claim 2 is it is characterised in that described Second Threshold includes the second electricity
Pressure threshold value and the second current threshold；
Described controller specifically for：
During described APFC starts, receive the described switch letter that described zero passage detection module sends
Number and receive the sampled voltage signal that described voltage sampling circuit sends and reach second voltage threshold value and described current sample electricity
When the sampled current signals that road sends reach the second current threshold, calculated according to described sampled voltage signal and sampled current signals
The dutycycle of drive signal, and generate described drive signal and export to described boost module, to control the work of described boost module
Operation mode.
4. APFC as claimed in claim 2 is it is characterised in that described boost module includes an electricity
Sense, a switching tube, a diode and an electric capacity；
Described boost module has current input terminal, the first positive output end, the first negative output terminal and signal input part；
One end of described inductance is the current input terminal of described boost module, and the other end of described inductance connects described switching tube
Outfan and the anode of described diode；The common port of described switching tube connects the negative pole of described electric capacity, the moon of described diode
Pole connects the positive pole of described electric capacity；First positive output end of the just extremely described boost module of described electric capacity, described electric capacity negative
First negative output terminal of extremely described boost module, the control end of described switching tube is the signal input part of described boost module.
5. APFC as claimed in claim 4 is it is characterised in that described voltage sampling circuit is by connecting
The first resistor connecting and second resistance composition；
Described voltage sampling circuit has the first positive input terminal, the first negative input end and the first outfan；
The common port of described first resistor and second resistance is the first outfan of described voltage sampling circuit；Described first resistor
The other end be described voltage sampling circuit the first positive input terminal, connect described boost module the first positive output end；Described
The other end of second resistance is the first negative input end of described voltage sampling circuit, connects the first negative output of described boost module
End.
6. APFC as claimed in claim 5 is it is characterised in that described current sampling circuit includes
Three resistance；
Described current sampling circuit has the second input and the second outfan；
One end of described 3rd resistor is the second input of described current sampling circuit, and connect described boost module first is negative
Outfan；The other end of described 3rd resistor is the second outfan of described current sampling circuit.
7. APFC as claimed in claim 6 is it is characterised in that described zero passage detection module has
One ac input end, the second ac input end and the 3rd outfan；
Alternating current power supply is connected between first ac input end of described zero passage detection module and the second ac input end；Described zero passage
Detection module exports described switching signal to described controller through described 3rd outfan.
8. APFC as claimed in claim 7 is it is characterised in that described controller has voltage sample
End, current sample end, the 4th input and the 4th outfan；
The voltage sample end of described controller connects the first outfan of described voltage sampling circuit；The electric current of described controller is adopted
Sample end connects the second outfan of described current sampling circuit；4th input of described controller connects described zero passage detection mould
3rd outfan of block；4th outfan of described controller connects the signal input part of described boost module.
9. APFC as claimed in claim 8 is it is characterised in that described rectification module is included by four
The full-bridge rectifier of diode composition parallel with one another；
Described full-bridge rectifier has the 3rd ac input end, the 4th ac input end, the second positive output end and the second negative output
End；
Described alternating current power supply is connected between 3rd ac input end of described full-bridge rectifier and the 4th ac input end；Described complete
Second positive output end of bridge commutator connects the current input terminal of described boost module；Second negative output of described full-bridge rectifier
End connects the second outfan of described current sampling circuit.
10. a kind of startup method of APFC is it is characterised in that comprise the steps：
Rectifying and wave-filtering is carried out to obtain unidirectional current to the alternating current of input, and by the described direct current electricity output obtaining to active power
The boost module of factor correcting circuit；
Real-time sampling is carried out to obtain sampled signal to the output signal of described boost module；
The instantaneous value of alternating current described in real-time detection, and default less than one in the absolute value of the instantaneous value described alternating current is detected
First threshold when, generate a switching signal；
When the described sampled signal generating described switching signal and obtain in real time reaches a default Second Threshold, according to described
Sampled signal generates drive signal and exports to described boost module, to control the mode of operation of described boost module；Wherein, described
Mode of operation includes charge mode and discharge mode.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108768156A (en) * | 2018-08-17 | 2018-11-06 | 英飞特电子（杭州）股份有限公司 | A kind of power supply unit and its power factor correction circuit |
| CN109980915A (en) * | 2019-05-17 | 2019-07-05 | 广东美的制冷设备有限公司 | Circuit of power factor correction and air conditioner |
| CN109980914A (en) * | 2019-05-17 | 2019-07-05 | 广东美的制冷设备有限公司 | Circuit of power factor correction and air conditioner |
| CN110011530A (en) * | 2019-05-17 | 2019-07-12 | 广东美的制冷设备有限公司 | Circuit of power factor correction and air conditioner |
| CN110034671A (en) * | 2019-05-17 | 2019-07-19 | 广东美的制冷设备有限公司 | Circuit of power factor correction and air conditioner |
| WO2020232995A1 (en) * | 2019-05-17 | 2020-11-26 | 广东美的制冷设备有限公司 | Power factor correction circuit and air conditioner |
| CN112803749A (en) * | 2021-01-29 | 2021-05-14 | 上海瞻芯电子科技有限公司 | Current detection control method of power factor correction circuit |
| CN112803751A (en) * | 2021-01-29 | 2021-05-14 | 上海瞻芯电子科技有限公司 | Control signal generation method and control device of power factor correction circuit and power supply |
| CN114157143A (en) * | 2021-12-07 | 2022-03-08 | 四川虹美智能科技有限公司 | Refrigerator constant-power defrosting circuit based on boost topological structure |
| CN115224912A (en) * | 2022-09-19 | 2022-10-21 | 长城电源技术有限公司 | Current sampling correction value obtaining method and device working method obtained by current sampling correction value obtaining method and device |
| CN116647018A (en) * | 2023-07-27 | 2023-08-25 | 西安锐泽克斯光电科技有限公司 | Electric automobile charging device with multiple paths of input power plugs |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6714429B2 (en) * | 2001-08-15 | 2004-03-30 | Astec International Limited | Active inrush current control for AC to DC converters |
| CN101325367A (en) * | 2007-06-14 | 2008-12-17 | 海尔集团公司 | Circuit for correcting part active power factor |
| CN102405586A (en) * | 2009-04-21 | 2012-04-04 | 夏普株式会社 | Power supply device |
| CN102624212A (en) * | 2011-01-28 | 2012-08-01 | 索尼公司 | Control device, control method, and power supply device |
| CN103904880A (en) * | 2014-03-04 | 2014-07-02 | 东莞博用电子科技有限公司 | Part active power factor correction circuit controlled by input voltage threshold value |
| CN105391294A (en) * | 2015-07-13 | 2016-03-09 | 广东威灵电机制造有限公司 | Control device and method for power factor corrector |
-
2016
- 2016-11-17 CN CN201611031228.2A patent/CN106411117B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6714429B2 (en) * | 2001-08-15 | 2004-03-30 | Astec International Limited | Active inrush current control for AC to DC converters |
| CN101325367A (en) * | 2007-06-14 | 2008-12-17 | 海尔集团公司 | Circuit for correcting part active power factor |
| CN102405586A (en) * | 2009-04-21 | 2012-04-04 | 夏普株式会社 | Power supply device |
| CN102624212A (en) * | 2011-01-28 | 2012-08-01 | 索尼公司 | Control device, control method, and power supply device |
| CN103904880A (en) * | 2014-03-04 | 2014-07-02 | 东莞博用电子科技有限公司 | Part active power factor correction circuit controlled by input voltage threshold value |
| CN105391294A (en) * | 2015-07-13 | 2016-03-09 | 广东威灵电机制造有限公司 | Control device and method for power factor corrector |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108768156A (en) * | 2018-08-17 | 2018-11-06 | 英飞特电子（杭州）股份有限公司 | A kind of power supply unit and its power factor correction circuit |
| CN109980915A (en) * | 2019-05-17 | 2019-07-05 | 广东美的制冷设备有限公司 | Circuit of power factor correction and air conditioner |
| CN109980914A (en) * | 2019-05-17 | 2019-07-05 | 广东美的制冷设备有限公司 | Circuit of power factor correction and air conditioner |
| CN110011530A (en) * | 2019-05-17 | 2019-07-12 | 广东美的制冷设备有限公司 | Circuit of power factor correction and air conditioner |
| CN110034671A (en) * | 2019-05-17 | 2019-07-19 | 广东美的制冷设备有限公司 | Circuit of power factor correction and air conditioner |
| WO2020232995A1 (en) * | 2019-05-17 | 2020-11-26 | 广东美的制冷设备有限公司 | Power factor correction circuit and air conditioner |
| CN112803749A (en) * | 2021-01-29 | 2021-05-14 | 上海瞻芯电子科技有限公司 | Current detection control method of power factor correction circuit |
| CN112803751A (en) * | 2021-01-29 | 2021-05-14 | 上海瞻芯电子科技有限公司 | Control signal generation method and control device of power factor correction circuit and power supply |
| CN112803749B (en) * | 2021-01-29 | 2022-07-05 | 上海瞻芯电子科技有限公司 | Current detection control method of power factor correction circuit |
| CN114157143A (en) * | 2021-12-07 | 2022-03-08 | 四川虹美智能科技有限公司 | Refrigerator constant-power defrosting circuit based on boost topological structure |
| CN115224912A (en) * | 2022-09-19 | 2022-10-21 | 长城电源技术有限公司 | Current sampling correction value obtaining method and device working method obtained by current sampling correction value obtaining method and device |
| CN116647018A (en) * | 2023-07-27 | 2023-08-25 | 西安锐泽克斯光电科技有限公司 | Electric automobile charging device with multiple paths of input power plugs |
| CN116647018B (en) * | 2023-07-27 | 2023-10-10 | 西安锐泽克斯光电科技有限公司 | Electric automobile charging device with multiple paths of input power plugs |
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