CN103762868A - High-power factor active valley-fill type alternating current and direct current converter - Google Patents
High-power factor active valley-fill type alternating current and direct current converter Download PDFInfo
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- CN103762868A CN103762868A CN201410048956.9A CN201410048956A CN103762868A CN 103762868 A CN103762868 A CN 103762868A CN 201410048956 A CN201410048956 A CN 201410048956A CN 103762868 A CN103762868 A CN 103762868A
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Abstract
The invention belongs to the technical field of electronics, and relates to alternating current and direct current conversion and power control, in particular to a high-power factor active valley-fill type alternating current and direct current converter. The high-power factor active valley-fill type alternating current and direct current converter is composed of a diode rectifier bridge (1), an active nonlinear capacitance network (2) and a subsequent switch power converter (3), wherein the output of the diode rectifier bridge (1) supplies the active nonlinear capacitance network (2) and the subsequent switch power converter (3) with power; the output of the active nonlinear capacitance network (2) is controlled to supply the subsequent switch power converter (3) with power.
Description
Technical field
The invention belongs to electronic technology field, relate to the control of AC/DC current conversion and power.More particularly, the present invention relates to the active valley fill type AC/DC convertor of a kind of High Power Factor.
Background technology
In Alternating Current Power Supply occasion, in order to reach High Power Factor, meet the harmonic requirement of IEC61000-3-2, AC/DC convertor need to realize power factor emendation function.Active step-up type power factor correcting circuit is a popular method, but it needs the control loop of more complicated to control this active power switch to realize power factor emendation function, and its power factor can reach 0.98.Lower at cost, be widely used in electricity-saving lamp, LED illumination constant power less, in the product of cost sensitivity, passive valley fill type circuit of power factor correction (as shown in Figure 1) is not owing to there is no active switch, and circuit is simple and welcome.Be characterized in when diode D1, D2 and D3 and storage capacitor C1 and C2 have formed storage capacitor C1 and C2 charging being connected in series; The circuit form that during electric discharge, storage capacitor C1 and C2 are connected in parallel.Its power factor is generally less than 0.9.China applies for a patent CN201310277987.7 " a kind of active control fill out paddy circuit and control method thereof " (as shown in Figure 2) and proposes a kind ofly containing active switch, to fill out paddy circuit and control method thereof.To be that the branch road that is in series with an active switch by a storage capacitor is in parallel with diode rectifier bridge and output loading form for it.The relatively passive paddy circuit of filling out can save an electric capacity and three diodes, but increases an active switch and corresponding control circuit.Filling out in paddy circuit of this active control, when this storage capacitor C powers to output loading in active switch control.The stored energy of this storage capacitor is provided through this active switch by diode rectifier bridge.When this storage capacitor will supplement discharged energy storage, because capacitance voltage does not suddenly change and diode rectifier bridge output is voltage source characteristic, this will produce the charge pulse currents of narrow pulsewidth of high amplitude to capacitance energy storage; And along with this storage capacitor value increases, the amplitude of this charge pulse currents further increases.This and the passive the same pulse current that makes diode rectifier bridge will export at every half cycle the narrow pulsewidth of a high amplitude of paddy circuit of filling out.This makes the paddy circuit of filling out of this active control fill out with passive the power factor that exchanges input that paddy circuit is equally difficult to further to improve them.To further improve the power factor of the interchange input of filling out paddy circuit, make power factor be greater than 0.9, this need to manage to limit this capacitance energy storage will be produced to the charge pulse currents of narrow pulsewidth of high amplitude, make the charge pulse currents of the narrow pulsewidth of this high amplitude become the charging current of the wide pulse width of low amplitude value, thereby further improve the power factor of the interchange input of filling out paddy circuit.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of active valley fill type AC/DC convertor that how to realize High Power Factor.
In order to solve the problems of the technologies described above, the invention provides the active valley fill type AC/DC convertor of a kind of High Power Factor, by diode rectifier bridge, active nonlinear capacitance network and follow-up switching power converter (DC-DC converter), formed; The output of diode rectifier bridge is respectively to active nonlinear capacitance network and follow-up switching power converter (DC-DC converter) power supply; The output of active nonlinear capacitance network is that controlled power supply is to follow-up switching power converter (DC-DC converter).
That is, diode rectifier bridge 1, active nonlinear capacitance network 2 and follow-up switching power converter 3 connection parallel with one another.
Foregoing as shown in Figure 3.
As the improvement of the active valley fill type AC/DC convertor of High Power Factor of the present invention:
Described active nonlinear capacitance network is comprised of storage capacitor C and active switch network; Described active switch network is comprised of switching network, switch control module A, diverter switch K; Switching network and switch control module A are the output voltage V according to diode rectifier bridge
iNand the control law of setting is controlled when switch the storage capacitor C energy storage to active nonlinear capacitance network with controlled charging current; Switch control module A is the output voltage V according to diode rectifier bridge
iNand when the storage capacitor C that the control law control diverter switch K setting controls active nonlinear capacitance network provide energy to follow-up switching power converter (DC-to-DC power pack), so that follow-up switching power converter (DC-DC converter) can have enough input voltages and export corresponding power output.Thereby make whole system be issued to high as far as possible power factor and efficiency in the condition that meets corresponding index.
The control law of described setting is: switch control module A is controlled by the output voltage V of diode rectifier bridge
iN, when the output voltage V of diode rectifier bridge 1
iNbe less than V
iN-MINtime (corresponding X interval), drive diverter switch K open-minded, storage capacitor C powers to follow-up switching power converter 3, meanwhile, when the output voltage V of diode rectifier bridge 1
iNbe greater than V
iN-MINtime (corresponding Y interval), when switch control module A controls switch and with controlled charging current, active nonlinear capacitance network is carried out to energy storage.
As the further improvement of the active valley fill type AC/DC convertor of High Power Factor of the present invention:
Active nonlinear capacitance network is comprised of storage capacitor C, switching network, switch control module A and diverter switch K;
Switching network consists of active switch M, inductance L and sustained diode;
Diverter switch K is a bidirectional switch;
The electrical connection of described active nonlinear capacitance network is: storage capacitor C and diverter switch K are in series, and forms a branch road; Sustained diode and active switch M are in series, and form another branch road; Above-mentioned 2 branch roads are parallel with one another; The intermediate point of above-mentioned 2 branch roads is connected by inductance L;
Active switch M is by diode and a N-channel MOS FET/P channel mosfet single-way switch in series;
Switch control module A is controlled by the output voltage V of diode rectifier bridge
iN, when the output voltage V of diode rectifier bridge 1
iNbe less than V
iN-MINtime (corresponding X interval), drive diverter switch K open-minded, storage capacitor C powers to follow-up switching power converter, meanwhile, when the output voltage V of diode rectifier bridge
iNbe greater than V
iN-MINtime (corresponding Y interval), switch control module A output switch frequency PWM duty ratio is with the output voltage V of diode rectifier bridge 1
iNthe control signal changing drives controls active switch M;
The charge circuit of described active nonlinear capacitance network is to consist of storage capacitor C, active switch M, inductance L and sustained diode; The discharge loop of described active nonlinear capacitance network is to consist of diverter switch K and storage capacitor C;
The control law of setting is: when the output voltage V of diode rectifier bridge (1)
iNbe less than V
iN-MINtime (corresponding X interval), diverter switch K is open-minded, storage capacitor C powers to follow-up switching power converter; And, when the output voltage V of diode rectifier bridge
iNbe greater than V
iN-MINtime (corresponding Y interval), switch control module A output switch frequency PWM duty ratio is with the output voltage V of diode rectifier bridge
iNthe control signal control active switch M changing.
Remarks explanation: switch control module A consists of comparator and corresponding P raceway groove or N-channel MOS FET drive circuit; The design of this switch control module A belongs to routine techniques.
Foregoing as shown in Figure 5.
As the further improvement of the active valley fill type AC/DC convertor of High Power Factor of the present invention:
Described active nonlinear capacitance network is comprised of low storage capacitor C, switching network, switch control module A and diverter switch K;
Diverter switch K is a single-way switch (being to consist of a bidirectional switch and diodes in parallel); Be for example P channel mosfet or N-channel MOS FET;
The electrical connection of described active nonlinear capacitance network is: low storage capacitor C connects successively with switching network, diverter switch K; Described switching network consists of series resistance R and anti-also diode D parallel connection;
Switch control module A is controlled by the output voltage V of diode rectifier bridge
iN, when the output voltage V of diode rectifier bridge
iNbe less than V
iN-MINtime (corresponding X interval), drive diverter switch K open-minded, low storage capacitor C powers to follow-up switching power converter;
The charge circuit of described active nonlinear capacitance network is to consist of the series resistance R in diverter switch K, low storage capacitor C and switching network; The discharge loop of described active nonlinear capacitance network is to consist of the anti-and diode D of series resistance R in diverter switch K, low storage capacitor C and switching network;
The control law of setting is specially: when the output voltage V of diode rectifier bridge
iNbe less than V
iN-MINtime (corresponding X interval), diverter switch K is open-minded, storage capacitor C powers to follow-up switching power converter.
Remarks explanation: switch control module A consists of comparator and corresponding P raceway groove or N-channel MOS FET drive circuit; The design of this switch control module A belongs to routine techniques.
Foregoing is as described in Fig. 6, Fig. 7.
As the further improvement of the active valley fill type AC/DC convertor of High Power Factor of the present invention:
Diverter switch K is P channel mosfet, N-channel MOS FET.
As the further improvement of the active valley fill type AC/DC convertor of High Power Factor of the present invention:
Described active nonlinear capacitance network is comprised of storage capacitor C, switching network, switch control module A and diverter switch K;
Switching network is by active switch M, and inductance L and sustained diode form;
Diverter switch K is a single-way switch (being to consist of a bidirectional switch and diodes in parallel); Be for example P channel mosfet or N-channel MOS FET;
Active switch M is a single-way switch, for example, be N-channel MOS FET.
Foregoing as described in Figure 8.
In the present invention, switching network and switch control module A are the output voltage V according to diode rectifier bridge
iNand when the control law of setting is controlled and the storage capacitor energy storage to active nonlinear capacitance network with controlled charging current; Switch control module A is the output voltage V according to diode rectifier bridge
iNand when the storage capacitor that the control law control diverter switch K setting controls active nonlinear capacitance network provides energy to follow-up switching power converter (DC-to-DC power pack), so that follow-up switching power converter (DC-DC converter) can have enough input voltages and export corresponding power output, and make whole system be issued to high as far as possible power factor and efficiency in the condition that meets corresponding index.
From civil power, exchange the output (as shown in Figure 4) through diode rectifier bridge, its output voltage V
iNbe by zero with sinusoidal rule increase to civil power exchange peak value by peak value, with sinusoidal rule, be reduced to zero again, with twice civil power a-c cycle, go round and begin again like this.Obviously to the needed minimum input voltage V of the DC-DC converter of follow-up switching power converter
iN_MIN, when the output voltage V of diode rectifier bridge
iNfrom minimum input voltage V
iN_MINduring to crest voltage, this DC-DC converter is to export corresponding power output, and the output voltage V of diode rectifier bridge
iNalso to active nonlinear capacitance network storage power.And when the output voltage V of diode rectifier bridge
iNfrom zero to minimum input voltage V
iN_MINtime, this DC-DC converter does not have enough input voltages and can not export corresponding power output.In order to make the output voltage V of diode rectifier bridge
iNfrom zero to minimum input voltage V
iN_MINduring this time, follow-up switching power converter can have enough input voltages and export corresponding power output, diverter switch K in active nonlinear capacitance network needs to open, make active nonlinear capacitance network provide required input voltage to this follow-up switching power converter (DC-DC converter), to guarantee that this follow-up switching power converter can export corresponding power output, and now the power output of diode rectifier bridge is zero.
In the present invention, active nonlinear electric capacity net is because switching network and switch control module A are the output voltage V according to diode rectifier bridge
iNand when the control law of setting is controlled and the storage capacitor energy storage to active nonlinear capacitance network with controlled charging current, this makes the input current of this charging current and follow-up switching power converter be superposed to the output current of diode rectifier bridge, this reduces the harmonic current of the input AC electric current of diode rectifier bridge, and power factor is greater than 0.9 becomes possibility.
In the present invention, this controlled charging current is only the electric charge dischargeing for supplementing this storage capacitor.From electric charge and electric current, the relation of time, for the fixing quantity of electric charge, this charging current is lower, and its charging interval is longer; This expected just further to improve power factor.This charging current can be according to the output voltage V of diode rectifier bridge
iNcarrying out simple open loop control reaches.
As shown in Figure 4, due at interval Y, the output of diode rectifier bridge supplies power directly to follow-up switching power converter (being DC-DC converter), and this is that one-level power circuit completes input and output conversion, and this is high efficiency.Interval Y accounts for sizable ratio in whole cycle.At interval Y, the output of diode rectifier bridge is also to active nonlinear capacitance network stored energy.Only, at interval X, active nonlinear capacitance network is powered to follow-up switching power converter (being DC-DC converter).Due to the operation of active nonlinear capacitance network stored energy, this can regard two stage power circuit as and complete input and output conversion, and the input and output conversion efficiency that this stage efficiency completes than interval Y one-level power circuit is lower.But interval X only accounts for the quite little ratio in whole cycle, the efficiency of overall system is quite high like this.
From conversion efficiency and the input voltage relation of follow-up switching power converter (being DC-DC converter), in general, average input voltage is higher, and corresponding follow-up switching power converter (being DC-DC converter) conversion efficiency is higher.In the present invention, due at interval Y, the output of diode rectifier bridge is to active nonlinear capacitance network stored energy, and the voltage of this storage capacitor has reached its extreme value.When interval X, active nonlinear capacitance network is to follow-up switching power converter (being DC-DC converter) power supply, and the input voltage of follow-up switching power converter (being DC-DC converter) is this storage capacitor voltage; This storage capacitor voltage reduces from its extreme value.By average the input voltage of interval Y and the follow-up switching power converter of interval X (being DC-DC converter), can find out the average input voltage of this follow-up switching power converter (being DC-DC converter), the namely average output voltage of active nonlinear capacitance network of the present invention is higher than the existing passive average output voltage of filling out paddy circuit of power factor correction.This makes whole system be issued to high as far as possible power factor and efficiency in the condition that meets corresponding index.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the AC/DC convertor figure (belonging to prior art) of passive valley fill type;
Fig. 2 is existing " active valley fill type AC/DC convertor " figure;
Fig. 3 is the block diagram of the active valley fill type AC/DC convertor of High Power Factor of the present invention;
Fig. 4 is the time dependent output voltage V IN figure of diode rectifier bridge 1;
Fig. 5 is the active valley fill type AC/DC convertor of the High Power Factor described in embodiment 1 circuit diagram;
Fig. 6 is the active valley fill type AC/DC convertor of the High Power Factor described in embodiment 2 circuit diagram;
Fig. 7 is the active valley fill type AC/DC convertor of the High Power Factor described in embodiment 3 circuit diagram;
Fig. 8 is the active valley fill type AC/DC convertor of the High Power Factor described in embodiment 4 circuit diagram.
Embodiment
One, diode rectifier bridge 1 forms (for routine techniques) by 4 diodes.
Two, active nonlinear capacitance network 2 is specifically comprised of storage capacitor C, switching network, switch control module A and diverter switch K.
Switching network is by active switch M, and inductance L and sustained diode form.Diverter switch K is a bidirectional switch.
The electrical connection of active nonlinear capacitance network 2 is: storage capacitor C and diverter switch K are in series, and forms a branch road; Sustained diode and active switch M are in series, and form another branch road; Above-mentioned 2 branch roads are parallel with one another; The intermediate point of above-mentioned 2 branch roads is connected by inductance L;
Active switch M is by diode and a N-channel MOS FET single-way switch in series;
Switch control module A is controlled by the output voltage V of diode rectifier bridge 1
iN, when the output voltage V of diode rectifier bridge 1
iNbe less than V
iN-MINtime (corresponding X interval), drive diverter switch K open-minded, storage capacitor C powers to follow-up switching power converter 3, meanwhile, when the output voltage V of diode rectifier bridge 1
iNbe greater than V
iN-MINtime (corresponding Y interval), switch control module A output switch frequency PWM duty ratio is with the output voltage V of diode rectifier bridge 1
iNthe control signal changing drives controls active switch M.
Switch control module A consists of comparator and corresponding P raceway groove or N-channel MOS FET drive circuit; The design of this switch control module A belongs to routine techniques.
The charge circuit of active nonlinear capacitance network 2 is to consist of storage capacitor C, active switch M, inductance L and sustained diode.The discharge loop of active nonlinear capacitance network 2 is to consist of diverter switch K and storage capacitor C.
In charge circuit (the Y interval shown in corresponding diagram 4), due to active switch M, the effect of inductance L and sustained diode has limited and has controlled the maximum charging current of this storage capacitor C; For required supplementary charging charge after storage capacitor C electric discharge, required charging current pulsewidth increases.This is the input power factor that is extremely conducive to improve this AC/DC convertor.According to the output voltage V of diode rectifier bridge 1
iNand the control law of setting, active switch M is subject to the Duty ratio control of switch control module A to set.This carves when appropriate charging current and opens charging current corresponding to generation.The charging current of this storage capacitor C and the stack of the input current of follow-up switching power converter 3 form the output current of diode rectifier bridge 1.Due to the control action of active switch M, in the Y interval shown in corresponding diagram 4, the output current of diode rectifier bridge 1 can be close to straight electric current.
The control law of above-mentioned setting is specially: when the output voltage V of diode rectifier bridge 1
iNbe less than V
iN-MINtime (corresponding X interval), diverter switch K is open-minded, storage capacitor C powers to follow-up switching power converter 3, meanwhile, when the output voltage V of diode rectifier bridge 1
iNbe greater than V
iN-MINtime (corresponding Y interval), switch control module A output switch frequency PWM duty ratio is with the output voltage V of diode rectifier bridge 1
iNthe control signal control active switch M changing.
In discharge loop (the X interval shown in corresponding diagram 4), low storage capacitor C, through diverter switch K, is DC-DC converter to follow-up switching power converter 3() power supply; In X interval shown in corresponding diagram 4, the output current of diode rectifier bridge 1 is zero.
The output current that is close to diode rectifier bridge 1 in straight electric current and X interval due to the output current of diode rectifier bridge 1 in the Y interval shown in corresponding diagram 4 is zero, and therefore, the ac input power factor of diode rectifier bridge 1 will be greater than 0.95.
In embodiment 1, the charging circuit of storage capacitor C is to consist of active switch M, inductance L and diode D, and the charging circuit of storage capacitor C has corresponding switching loss without any large conduction loss; And this switching loss is along with the voltage of storage capacitor C increases and reduces.The efficiency of the charging circuit of storage capacitor C is quite high.
Three, in the present embodiment, follow-up switching power converter 3 is selected existing DC-DC converter, can select buck according to the relation of input and output voltage, boosts, the power inverter of step-down.
In embodiment 1, due to the high efficiency of storage capacitor C charging circuit, storage capacitor C value can select enough large (for example can be greater than 100uF) to meet various requirement.
But due in embodiment 1, storage capacitor C charging circuit needs active switch M, inductance L and sustained diode, and this has improved cost and the complexity of whole system.In the product of, cost sensitivity less at electricity-saving lamp, LED illumination constant power, be also to realize the active paddy AC/DC convertor of filling out of low cost high powered factor with the present invention.Because electricity-saving lamp, LED illumination constant power is less, the storage capacitor C value in this active nonlinear capacitance network 2 can be selected lower value, as capacitance between 0.1uF～4.7uF.Capacitor has numerous species; Except electrochemical capacitor, also has thin-film capacitor, ceramic dielectric electric capacity etc.The life-span of electrochemical capacitor is the ambient temperature effect that is subject to its work.The every increase by ten of ambient temperature is spent, one times of the lost of life of electrochemical capacitor.The life-span of thin-film capacitor and ceramic dielectric electric capacity is very long, with the increase of temperature, does not reduce.But the capacity of the unit volume of thin-film capacitor and ceramic dielectric electric capacity (as: 0.1uF～4.7uF) is much smaller than the capacity (as: 10uF～470uF) of the unit volume of electrochemical capacitor.If can serve as energy-storage travelling wave tube with thin-film capacitor and ceramic dielectric electric capacity, can guarantee that so the active paddy AC/DC convertor of filling out of corresponding High Power Factor can be operated in and under high workload ambient temperature, there is no life problems.
Concrete scheme is as follows:
The active paddy AC/DC convertor of filling out of a kind of High Power Factor, as shown in Figure 6: comprise diode rectifier bridge 1, active nonlinear capacitance network 2 and follow-up switching power converter 3.
One, diode rectifier bridge 1 forms (for routine techniques) by 4 diodes.
Two, active nonlinear capacitance network 2 is specifically comprised of low storage capacitor C, switching network, switch control module A and diverter switch K.
Diverter switch K is a single-way switch, a bidirectional switch and diodes in parallel, consists of.For conventional MOSFET, due to the effect of its parasitic body diode, conventional MOSFET is a kind of suitable single-way switch.In embodiment 2, conventional P channel mosfet is used as diverter switch K.In embodiment 3, conventional N-channel MOS FET is used as diverter switch K.
The electrical connection of active nonlinear capacitance network 2 is: low storage capacitor C connects successively with switching network, diverter switch K; Switching network is to consist of series resistance R and anti-also diode D institute in parallel.
Switch control module A is controlled by the output voltage V of diode rectifier bridge 1
iN, when the output voltage V of diode rectifier bridge 1
iNbe less than V
iN-MINtime (corresponding X interval), drive diverter switch K open-minded, low storage capacitor C powers to follow-up switching power converter 3.
Switch control module A consists of comparator and corresponding P raceway groove or N-channel MOS FET drive circuit; The design of this switch control module A belongs to routine techniques.
The charge circuit of this active nonlinear capacitance network 2 is by diverter switch K, and the series resistance R of the body diode of MOSFET, low storage capacitor C and switching network forms; The discharge loop of active nonlinear capacitance network 2 is to consist of the anti-and diode D of series resistance R in diverter switch K, i.e. MOSFET, low storage capacitor C and switching network.
In this charge circuit (the Y interval shown in corresponding diagram 4), diode rectifier bridge 1 output voltage V
iNbe to increase with sinusoidal rule, due to the effect of series resistance R, for required supplementary charging charge after low storage capacitor C electric discharge, can select suitable resistance value R to limit the maximum charging current of this low storage capacitor C; Can make required charging current pulsewidth increase.This is the input power factor that is extremely conducive to improve this AC/DC convertor.Because the series resistance R sealing in has limited the maximum charging current of this low storage capacitor C, this has also produced the power consumption of corresponding charging current on this series resistance R.Due to this current value and corresponding power consumption of duration quite low for the input power of this AC/DC convertor, this effectiveness affects to AC/DC convertor is little, and this series resistance R affects quite large on the input power factor that improves this AC/DC convertor.Can select suitable low storage capacitor C value and resistance value R to make resistance R power consumption little, and the ac input power factor of diode rectifier bridge 1 is greater than 0.9.
In discharge loop (the X interval shown in corresponding diagram 4), low storage capacitor C is through diverter switch K, and in MOSFET and switching network, antiparallel diode D is DC-DC converter to follow-up switching power converter 3() power supply; Due in switching network with series resistance R anti-and diode D bypass series resistance R, this discharging current does not produce power consumption on this series resistance R.
Switch control module A is according to the output voltage V of diode rectifier bridge 1
iNand when the control law control diverter switch K setting open shutoff, and make active nonlinear capacitance network 2 correspondingly to follow-up switching power converter 3, input power is provided or input power is not provided.Because diverter switch K is low frequency switching manipulation, the P raceway groove that this is corresponding or N-channel MOS FET drive circuit can be set up driving voltage mode with the resistance of the connection grid of driven with current sources P raceway groove or N-channel MOS FET and source electrode, control corresponding P raceway groove or N-channel MOS FET and open or turn-off.This current source is to can be used to bear and complete the float level of work of corresponding P raceway groove or N-channel MOS FET move.
The control law of above-mentioned setting is specially: when the output voltage V of diode rectifier bridge 1
iNbe less than V
iN-MINtime (corresponding X interval), diverter switch K is open-minded, storage capacitor C powers to follow-up switching power converter 3.
Three, in the present embodiment, follow-up switching power converter 3 is selected existing DC-DC converter, can select buck according to the relation of input and output voltage, boosts, the power inverter of step-down.
Embodiment 4, as shown in Figure 8, in embodiment 1, can be used the structure applications of the diverter switch K of embodiment 2 conventional P channel mosfet as diverter switch K, and can save the series diode in active switch M.This makes this circuit be more convenient for practical application.
Finally, it is also to be noted that, what more than enumerate is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, can also have many distortion.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Claims (6)
1. the active valley fill type AC/DC convertor of High Power Factor, is characterized in that: diode rectifier bridge (1), active nonlinear capacitance network (2) and follow-up switching power converter (3), consist of; The output of diode rectifier bridge (1) is respectively to active nonlinear capacitance network (2) and follow-up switching power converter (3) power supply; The output of active nonlinear capacitance network (2) is that controlled power supply is to follow-up switching power converter (3).
2. the active valley fill type AC/DC convertor of High Power Factor according to claim 1, is characterized in that:
Described active nonlinear capacitance network (2) is comprised of storage capacitor C and active switch network; Described active switch network is comprised of switching network, switch control module A, diverter switch K; Switching network and switch control module A are according to the output voltage V of diode rectifier bridge (1)
iNand the control law of setting is controlled when switch the storage capacitor C energy storage to active nonlinear capacitance network (2) with controlled charging current; Switch control module A is according to the output voltage V of diode rectifier bridge (1)
iNand when the storage capacitor C that the control law control diverter switch K setting controls active nonlinear capacitance network (2) provide energy to follow-up switching power converter (3), so that follow-up switching power converter (3) can have enough input voltages and export corresponding power output.
3. the active valley fill type AC/DC convertor of High Power Factor according to claim 1 and 2, is characterized in that:
Described active nonlinear capacitance network (2) is comprised of storage capacitor C, switching network, switch control module A and diverter switch K;
Switching network consists of active switch M, inductance L and sustained diode;
Diverter switch K is a bidirectional switch;
The electrical connection of described active nonlinear capacitance network (2) is: storage capacitor C and diverter switch K are in series, and forms a branch road; Sustained diode and active switch M are in series, and form another branch road; Above-mentioned 2 branch roads are parallel with one another; The intermediate point of above-mentioned 2 branch roads is connected by inductance L;
Active switch M is by diode and a N-channel MOS FET/P channel mosfet single-way switch in series;
Switch control module A is controlled by the output voltage V of diode rectifier bridge (1)
iN, when the output voltage V of diode rectifier bridge (1)
iNbe less than V
iN-MINtime, drive diverter switch K open-minded, storage capacitor C powers to follow-up switching power converter (3), meanwhile, when the output voltage V of diode rectifier bridge (1)
iNbe greater than V
iN-MINtime, switch control module A output switch frequency PWM duty ratio is with the output voltage V of diode rectifier bridge (1)
iNthe control signal changing drives controls active switch M;
The charge circuit of described active nonlinear capacitance network (2) is to consist of storage capacitor C, active switch M, inductance L and sustained diode; The discharge loop of described active nonlinear capacitance network (2) is to consist of diverter switch K and storage capacitor C;
The control law of setting is: when the output voltage V of diode rectifier bridge (1)
iNbe less than V
iN-MINtime, diverter switch K is open-minded, and storage capacitor C powers to follow-up switching power converter (3); And, when the output voltage V of diode rectifier bridge (1)
iNbe greater than V
iN-MINtime, switch control module A output switch frequency PWM duty ratio is with the output voltage V of diode rectifier bridge (1)
iNthe control signal control active switch M changing.
4. the active valley fill type AC/DC convertor of High Power Factor according to claim 1 and 2, is characterized in that:
Described active nonlinear capacitance network (2) is comprised of low storage capacitor C, switching network, switch control module A and diverter switch K;
Diverter switch K is a single-way switch;
The electrical connection of described active nonlinear capacitance network (2) is: low storage capacitor C connects successively with switching network, diverter switch K; Described switching network consists of series resistance R and anti-also diode D parallel connection;
Switch control module A is controlled by the output voltage V of diode rectifier bridge (1)
iN, when the output voltage V of diode rectifier bridge (1)
iNbe less than V
iN-MINtime, drive diverter switch K open-minded, low storage capacitor C powers to follow-up switching power converter (3);
The charge circuit of described active nonlinear capacitance network (2) is to consist of the series resistance R in diverter switch K, low storage capacitor C and switching network; The discharge loop of described active nonlinear capacitance network (2) is to consist of the anti-and diode D of series resistance R in diverter switch K, low storage capacitor C and switching network;
The control law of setting is specially: when the output voltage V of diode rectifier bridge (1)
iNbe less than V
iN-MINtime, diverter switch K is open-minded, and storage capacitor C powers to follow-up switching power converter (3).
5. the active valley fill type AC/DC convertor of High Power Factor according to claim 4, is characterized in that:
Described diverter switch K is P channel mosfet or N-channel MOS FET.
6. the active valley fill type AC/DC convertor of High Power Factor according to claim 1 and 2, is characterized in that:
Described active nonlinear capacitance network (2) is comprised of storage capacitor C, switching network, switch control module A and diverter switch K;
Switching network is by active switch M, and inductance L and sustained diode form;
Diverter switch K is a single-way switch;
Active switch M is a single-way switch.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973097A (en) * | 2014-05-07 | 2014-08-06 | 魏其萃 | Active valley-filled alternating-current and direct-current converter for improving power factor efficiency |
| WO2015103641A1 (en) * | 2014-01-06 | 2015-07-09 | Maxat Touzelbaev | Valley-fill power factor correction circuit with active conduction angle control |
| TWI724777B (en) * | 2020-02-04 | 2021-04-11 | 晶豪科技股份有限公司 | Power control circuit |
| US11063511B1 (en) | 2020-01-06 | 2021-07-13 | Elite Semiconductor Memory Technology Inc. | Valley-fill PFC circuit with EMI protection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201726326U (en) * | 2010-02-09 | 2011-01-26 | 北京加维通讯电子技术有限公司 | Half-bridge soft switching power source with passive power factor correcting circuit |
| CN102858071A (en) * | 2012-09-27 | 2013-01-02 | 魏其萃 | High-power-factor direct-current current output light-emitting diode (LED) driving circuit with low-energy-storage capacitor |
| CN103269537A (en) * | 2013-05-28 | 2013-08-28 | 上海路千电子科技有限公司 | Multi-circuit current-limiting power supplying circuit, controlling method thereof and current-limiting power supplying method thereof |
| CN103312144A (en) * | 2013-07-03 | 2013-09-18 | 上海路千电子科技有限公司 | Active-control valley fill circuit and control method thereof |
| CN203279292U (en) * | 2013-05-27 | 2013-11-06 | 上海路千电子科技有限公司 | Double-loop current-limiting drive circuit |
-
2014
- 2014-02-12 CN CN201410048956.9A patent/CN103762868B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201726326U (en) * | 2010-02-09 | 2011-01-26 | 北京加维通讯电子技术有限公司 | Half-bridge soft switching power source with passive power factor correcting circuit |
| CN102858071A (en) * | 2012-09-27 | 2013-01-02 | 魏其萃 | High-power-factor direct-current current output light-emitting diode (LED) driving circuit with low-energy-storage capacitor |
| CN203279292U (en) * | 2013-05-27 | 2013-11-06 | 上海路千电子科技有限公司 | Double-loop current-limiting drive circuit |
| CN103269537A (en) * | 2013-05-28 | 2013-08-28 | 上海路千电子科技有限公司 | Multi-circuit current-limiting power supplying circuit, controlling method thereof and current-limiting power supplying method thereof |
| CN103312144A (en) * | 2013-07-03 | 2013-09-18 | 上海路千电子科技有限公司 | Active-control valley fill circuit and control method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015103641A1 (en) * | 2014-01-06 | 2015-07-09 | Maxat Touzelbaev | Valley-fill power factor correction circuit with active conduction angle control |
| US9263944B2 (en) | 2014-01-06 | 2016-02-16 | Maxat Touzelbaev | Valley-fill power factor correction circuit with active conduction angle control |
| CN103973097A (en) * | 2014-05-07 | 2014-08-06 | 魏其萃 | Active valley-filled alternating-current and direct-current converter for improving power factor efficiency |
| US11063511B1 (en) | 2020-01-06 | 2021-07-13 | Elite Semiconductor Memory Technology Inc. | Valley-fill PFC circuit with EMI protection |
| TWI724777B (en) * | 2020-02-04 | 2021-04-11 | 晶豪科技股份有限公司 | Power control circuit |
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|---|---|
| CN103762868B (en) | 2016-02-24 |
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Effective date of registration: 20191021 Address after: 214500 No. 8 Building East 2, Zhenjiang Pinglu, Xieqiao, Jingjiang City, Taizhou City, Jiangsu Province Patentee after: Jiangsu Xinhao Air Conditioning Equipment Co., Ltd. Address before: 310012 Qixia garden, Guihua Road, two West Wen Road, Hangzhou, Zhejiang, Xihu District 13-1-102 Patentee before: Wei Qi Cui |
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