CN113872432A - Power factor correction converter and control method - Google Patents
Power factor correction converter and control method Download PDFInfo
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- CN113872432A CN113872432A CN202111374720.0A CN202111374720A CN113872432A CN 113872432 A CN113872432 A CN 113872432A CN 202111374720 A CN202111374720 A CN 202111374720A CN 113872432 A CN113872432 A CN 113872432A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4241—Arrangements for improving power factor of AC input using a resonant converter
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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 utility model provides a power factor correction converter and a control method, comprising a charge pump module and a resonance isolation module, wherein the resonance isolation module comprises a resonance circuit, a transformer and a second rectification circuit; the voltage reduction circuit is composed of a first resonant capacitor, a second resonant capacitor, a pump capacitor and a bus capacitor and used for reducing bus voltage, the PFC function of the power factor correction converter can be realized in a wide input voltage range only by adding one resonant capacitor, the problem that the circuit control complexity degree is high due to the fact that a plurality of switch tubes and capacitors are used is avoided, meanwhile, output current is compared with preset reference current through collection of output current, a switch driving signal is generated, the working frequency of the switch tubes is controlled according to the switch driving signal, and stable working of the circuit is guaranteed by adopting a simple control method.
Description
Technical Field
The disclosure relates to the technical field of power electronics, in particular to a power factor correction converter and a control method.
Background
At present, with the continuous development of electronic technology, a switching Power supply is widely applied to the fields of Power grid systems, liquid crystal televisions, computers, integrated electronic circuits and the like, because the switching Power supply is a capacitance input type circuit, a phase difference between current and voltage causes loss of exchange Power, and Power utilization efficiency is reduced, so in order to improve the Power Factor of the switching Power supply and further improve the Power utilization efficiency of the switching Power supply, Power Factor Correction (PFC) equipment becomes necessary equipment of the switching Power supply, the Power Factor refers to a relation between effective Power and total Power consumption (apparent Power), namely a ratio of the effective Power divided by the total Power consumption (apparent Power), and the Power Factor can measure the degree of effective utilization of electric Power, and when the Power Factor value is larger, the Power utilization rate is higher.
In the existing charge pump power factor correction converter, in order to widen the input voltage range and enable the power factor correction converter to realize the PFC function in a wider input voltage range, a plurality of switching tubes and capacitors are often adopted to form a pump capacitor network structure, but because a plurality of switching tubes and capacitors are used, each switching tube needs to be correspondingly controlled, so that the circuit complexity is often higher, the circuit reliability is reduced, and the circuit cost is higher.
Disclosure of Invention
The embodiment of the disclosure at least provides a power factor correction converter and a control method thereof, which can reduce the use of a switch tube and a capacitor in the power factor correction converter, reduce the circuit complexity, further improve the circuit reliability, and save the production cost.
The embodiment of the disclosure provides a power factor correction converter and a control method, wherein the power factor correction converter comprises a charge pump module and a resonance isolation module, the resonance isolation module comprises a resonance circuit, a transformer and a second rectification circuit, the charge pump module comprises a first rectification circuit and a pump capacitor, and the resonance circuit comprises a first resonance capacitor, a second resonance capacitor and a switching tube circuit;
the input end of the charge pump module is connected with a voltage source, the output end of the charge pump module is connected with one end of the resonance isolation module, the other end of the resonance isolation module is connected with a load, one end of the second rectifying circuit is connected with the secondary winding of the transformer, and the other end of the second rectifying circuit is connected with the load;
one end of the pump capacitor is connected with the negative input end of the first rectifying circuit, and the other end of the pump capacitor is connected with the negative output end of the first rectifying circuit;
one end of the first resonant capacitor is connected with the negative input end of the first rectifying circuit, and the other end of the first resonant capacitor is connected with one end of the primary winding of the transformer;
one end of the second resonant capacitor is connected with the positive output end of the first rectifying circuit, and the other end of the second resonant capacitor is connected to one end of the primary winding of the transformer;
the switching tube circuit is connected between the positive output end of the first rectifying circuit and the negative output end of the first rectifying circuit and is connected with the transformer.
In an optional embodiment, the switching tube circuit includes a first switching tube and a second switching tube;
the drain electrode of the first switching tube is connected with the positive output end of the charge pump module;
the drain electrode of the second switching tube is connected with the source electrode of the first switching tube, and the source electrode of the second switching tube is connected with the negative output end of the first rectifying circuit.
In an alternative embodiment, the resonant circuit further comprises a resonant inductor;
one end of the resonant inductor is connected with one end of a primary winding of the transformer, and the other end of the resonant inductor is connected with a source electrode of the first switching tube.
In an optional embodiment, the charge pump module further comprises a bus capacitor;
one end of the bus capacitor is connected with the positive output end of the first rectifying circuit, and the other end of the bus capacitor is connected with the negative output end of the first rectifying circuit;
the first resonance capacitor, the second resonance capacitor, the pump capacitor and the bus capacitor form a voltage reduction loop for reducing the bus voltage.
In an optional embodiment, the first rectifying circuit includes a first diode, a second diode, a third diode, and a fourth diode;
the anode of the first diode is connected with the cathode of the fourth diode, and the cathode of the first diode is connected with the cathode of the second diode;
the cathode of the third diode is connected with the anode of the second diode, and the anode of the third diode is connected with the anode of the fourth diode;
the cathode of the second diode is used as the positive output end of the first rectifying circuit, and the anode of the third diode is used as the negative output end of the first rectifying circuit;
the anode of the first diode is used as the positive input end of the first rectifying circuit, and the cathode of the third diode is used as the negative input end of the first rectifying circuit.
In an optional embodiment, the second rectifying circuit includes a fifth diode, a sixth diode;
the anode of the fifth diode is connected with one end of the secondary winding of the transformer, and the cathode of the fifth diode is connected with a load;
and the anode of the sixth diode is connected with the other end of the secondary winding of the transformer, and the cathode of the sixth diode is connected with the cathode of the fifth diode.
In an optional embodiment, the resonant isolation module further comprises an output bus capacitor;
one end of the output bus capacitor is connected with one end of the load, and the other end of the output bus capacitor is connected with the other end of the load.
In an alternative embodiment, the source of the second switch tube is grounded.
In an alternative embodiment, the second rectifying circuit is grounded.
The embodiment of the present disclosure further provides a control method of a power factor correction converter, where the method includes:
collecting the output current of the power factor correction converter;
comparing the output current with a preset reference current to generate a switch driving signal;
and controlling the working frequency of the first switching tube and the second switching tube according to the switch driving signal.
An embodiment of the present disclosure further provides an electronic device, including: the power factor correction converter comprises a processor, a memory and a bus, wherein the memory stores machine readable instructions executable by the processor, the processor and the memory are communicated through the bus when an electronic device runs, and the machine readable instructions are executed by the processor to execute the control method of the power factor correction converter.
The disclosed embodiments also provide a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to execute the control method of the power factor correction converter.
The power factor correction converter comprises a charge pump module and a resonance isolation module, wherein the resonance isolation module comprises a resonance circuit and a transformer, the charge pump module comprises a first rectification circuit and a pump capacitor, the resonance circuit comprises a first resonance capacitor and a second resonance capacitor, and a voltage reduction loop is formed by the first resonance capacitor, the second resonance capacitor, the pump capacitor and a bus capacitor and is used for reducing the bus voltage, the power factor correction converter can realize the PFC function in a wide input voltage range only by adding one resonance capacitor, the problem of higher circuit control complexity caused by using a plurality of switching tubes and capacitors is avoided, meanwhile, the power factor correction converter compares the output current with a preset reference current by acquiring the output current of the power factor correction converter, and generating a switch driving signal, controlling the working frequency of the first switch tube and the second switch tube according to the switch driving signal, and ensuring the stable work of the circuit by adopting a simple control method.
In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly described below, and the drawings herein incorporated in and forming a part of the specification illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the technical solutions of the present disclosure. It is appreciated that the following drawings depict only certain embodiments of the disclosure and are therefore not to be considered limiting of its scope, for those skilled in the art will be able to derive additional related drawings therefrom without the benefit of the inventive faculty.
Fig. 1 illustrates one of the schematic structural diagrams of a power factor correction converter provided by the embodiments of the present disclosure;
fig. 2 shows a second schematic diagram of a power factor correction converter according to an embodiment of the present disclosure;
fig. 3 is a third schematic diagram illustrating a structure of a pfc converter according to an embodiment of the present disclosure;
fig. 4 shows a fourth schematic diagram of a power factor correction converter provided in the embodiment of the present disclosure;
FIG. 5 is a flow chart illustrating a method of controlling a PFC converter according to an embodiment of the present disclosure;
FIG. 6 is a graph showing waveforms of an output current and an input current of a PFC converter when the input current is 90V, according to an embodiment of the present disclosure;
FIG. 7 illustrates a waveform diagram of an output current and an input current of a PFC converter when the input current is 120V, provided by an embodiment of the present disclosure;
FIG. 8 is a graph showing the output current versus input current waveform of a PFC converter provided by an embodiment of the present disclosure when the input current is 144V;
FIG. 9 illustrates a graph of output current versus input current waveforms for a PFC converter provided by an embodiment of the present disclosure when the input current is 198V;
FIG. 10 is a graph showing waveforms of an output current and an input current of a PFC converter when the input current is 220V, according to an embodiment of the present disclosure;
fig. 11 shows waveforms of output current and input current of the pfc converter when the input current is 264V according to the embodiment of the present disclosure.
Illustration of the drawings: 100-power factor correction converter; 110-a charge pump module; 111-a first rectifying circuit; 1111-a first diode; 1112-a second diode; 1113-third diode; 1114 — a fourth diode; 112-pump capacitance; 113-bus capacitance; 120-a resonance isolation module; 121-a resonant circuit; 1211 — a first resonant capacitance; 1212 a second resonance capacitance; 1213-switching tube circuit; 1214-a first switch tube; 1215-a second switching tube; 1216-resonant inductance; 122-a transformer; 123-a second rectifying circuit; 1231-fifth diode; 1232-sixth diode; 1233-output bus capacitance.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. The components of the embodiments of the present disclosure, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present disclosure, presented in the figures, is not intended to limit the scope of the claimed disclosure, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without making creative efforts, shall fall within the protection scope of the disclosure.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The term "and/or" herein merely describes an associative relationship, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.
Research shows that in the existing charge pump power factor correction converter, in order to widen the input voltage range and enable the power factor correction converter to realize the PFC function in a wider input voltage range, a plurality of switching tubes and capacitors are often adopted to form a pump capacitor network structure, but because a plurality of switching tubes and capacitors are used, each switching tube needs to be correspondingly controlled, so that the circuit complexity is high, the circuit reliability is reduced, and the circuit cost is high.
Based on the above research, the present disclosure provides a power factor correction converter and a control method, the power factor correction converter includes a charge pump module and a resonant isolation module, the resonant isolation module includes a resonant circuit and a transformer, the charge pump module includes a first rectifying circuit and a pump capacitor, the resonant circuit includes a first resonant capacitor and a second resonant capacitor, a voltage reduction loop is formed by the first resonant capacitor, the second resonant capacitor, the pump capacitor and a bus capacitor, the voltage reduction loop is used for reducing a bus voltage, the power factor correction converter can realize a PFC function in a wide input voltage range by only adding one resonant capacitor, the problem of high circuit control complexity caused by using a plurality of switching tubes and capacitors is avoided, and meanwhile, the power factor correction converter compares an output current with a preset reference current by collecting the output current of the power factor correction converter, and generating a switch driving signal, controlling the working frequency of the first switch tube and the second switch tube according to the switch driving signal, and ensuring the stable work of the circuit by adopting a simple control method.
For the understanding of the present embodiment, a detailed description will be given to a power factor correction converter disclosed in the embodiments of the present disclosure.
Referring to fig. 1, a schematic diagram of a power factor correction converter 100 according to an embodiment of the present disclosure is shown.
The power factor correction converter 100 includes a charge pump module 110 and a resonant isolation module 120, the resonant isolation module 120 includes a resonant circuit 121, a transformer 122 and a second rectifying circuit 123, the charge pump module 110 includes a first rectifying circuit 111 and a pump capacitor 112, and the resonant circuit 121 includes a first resonant capacitor 1211, a second resonant capacitor 1212 and a switching tube circuit 1213.
The input end of the charge pump module 110 is connected with a voltage source, the output end of the charge pump module 110 is connected with one end of the resonance isolation module 120, and the other end of the resonance isolation module 120 is connected with a load; one end of the pump capacitor 112 is connected to the negative input end a2 of the first rectifying circuit 111, and the other end of the pump capacitor 112 is connected to the negative output end B2 of the first rectifying circuit 111; one end of the first resonant capacitor 1211 is connected to the negative input terminal a2 of the first rectifying circuit 111, and the other end of the first resonant capacitor 1211 is connected to one end of the primary winding N1 of the transformer 122; one end of the second resonant capacitor 1212 is connected to the positive output terminal B1 of the first rectifying circuit 111, and the other end of the second resonant capacitor 1212 is connected to one end of the primary winding N1 of the transformer 122. One end of the second rectifying circuit 123 is connected to the secondary winding N2 of the transformer 122, the other end of the second rectifying circuit 123 is connected to a load, and the switching tube circuit 1213 is connected between the positive output terminal B1 of the first rectifying circuit 111 and the negative output terminal B2 of the first rectifying circuit 111, and is connected to the transformer 122.
Here, the power factor correction converter 100 provided in the embodiment of the present application may be a charge pump power factor correction converter, and the charge pump PFC structure is configured by injecting a high-frequency resonant current to charge and discharge the pump capacitor 112.
The positive input end a1 of the first rectifying circuit 111 is used as the positive input end of the charge pump module 110, and the negative input end a2 of the first rectifying circuit 111 is used as the negative input end of the charge pump module 110; the positive output terminal B1 of the first rectifying circuit 111 and the negative output terminal B2 of the first rectifying circuit 111 serve as output terminals of the charge pump module 110.
As a possible implementation, the input voltage value of the voltage source may range from 90V to 264V.
Preferably, the second rectifying circuit 123 may be a half-bridge rectifying circuit.
The utility model provides a pair of power factor correction converter, power factor correction converter includes charge pump module and resonance isolation module, resonance isolation module includes resonant circuit and transformer, the charge pump module includes first rectifier circuit and pump capacitance, resonant circuit includes first resonant capacitor and second resonant capacitor, by first resonant capacitor, the second resonant capacitor, pump capacitance and bus capacitance constitute step-down circuit, be used for reducing bus voltage, only need increase a resonant capacitor and can make power factor correction converter can realize the PFC function at wide input voltage range, the higher problem of circuit control complexity that has avoided using a plurality of switch tubes and electric capacity to lead to.
Referring to fig. 2, a second schematic diagram of a power factor correction converter 100 according to an embodiment of the disclosure is shown.
The power factor correction converter 100 includes a charge pump module 110 and a resonant isolation module 120, the resonant isolation module 120 includes a resonant circuit 121, a transformer 122 and a second rectifying circuit 123, the charge pump module 110 includes a first rectifying circuit 111 and a pump capacitor 112, and the resonant circuit 121 includes a first resonant capacitor 1211, a second resonant capacitor 1212 and a switching tube circuit 1213. The switch tube circuit 1213 includes a first switch tube 1214 and a second switch tube 1215. The charge pump module 110 also includes a bus capacitor 113.
The drain D1 of the first switch tube 1214 is connected to the positive output terminal B1 of the charge pump module 110; the drain D2 of the second switch 1215 is connected to the source S1 of the first switch 1214, and the source S2 of the second switch 1215 is connected to the negative output terminal B2 of the first rectifying circuit 111. One end of the bus capacitor 113 is connected to the positive output terminal B1 of the first rectifier circuit 111, and the other end of the bus capacitor 113 is connected to the negative output terminal B2 of the first rectifier circuit 111.
Here, a capacitor loop is formed by the first resonant capacitor 1211, the second resonant capacitor 1212, the pump capacitor 112 and the bus capacitor 113, and serves as a step-down loop for reducing the bus voltage, so that the power factor correction converter 100 can implement the PFC function in a wide voltage input range.
Wherein the source S2 of the second switch 1215 is grounded. The first switch tube 1214 and the second switch tube 1215 respectively control the on/off of the first switch tube 1214 and the second switch tube 1215 through the driving voltages applied to the gate G1 of the first switch tube 1214 and the gate G2 of the second switch tube 1215.
As a possible implementation, the first switch 1214 and the second switch 1215 may be implemented by Metal-Oxide-Semiconductor Field-Effect transistors (MOSFETs).
Here, the capacitance capacities of the first resonance capacitor 1211, the second resonance capacitor 1212, the pump capacitor 112, and the bus capacitor 113 may be set according to actual conditions, and are not particularly limited herein.
Referring to fig. 3, a third schematic diagram of a power factor correction converter 100 according to an embodiment of the present disclosure is shown.
The power factor correction converter 100 includes a charge pump module 110 and a resonant isolation module 120, the resonant isolation module 120 includes a resonant circuit 121, a transformer 122 and a second rectifying circuit 123, the charge pump module 110 includes a first rectifying circuit 111 and a pump capacitor 112, and the resonant circuit 121 includes a first resonant capacitor 1211, a second resonant capacitor 1212 and a switching tube circuit 1213. The switch tube circuit 1213 includes a first switch tube 1214 and a second switch tube 1215. The charge pump module 110 also includes a bus capacitor 113. The resonant circuit 121 also includes a resonant inductor 1216.
One end of the resonant inductor 1216 is connected to one end of the primary winding N1 of the transformer 122, and the other end of the resonant inductor 1216 is connected to the source S1 of the first switch transistor 1214.
Here, since the resonant circuit in which the second resonant capacitor 1212 is located stores part of the energy of the bus bar, which requires that the turn ratio of the transformer 122 is further decreased, which may increase the number of turns of the transformer 122, and further increase the volume of the transformer 122, as a possible implementation, the transformer 122 may integrate the resonant inductor 1216 with the transformer 122 by using a magnetic integration technique, which may save the volume of the resonant inductor 1216, and integrate the resonant inductor 1216 with the transformer 122 by using a magnetic integration technique, which may consider that the number of turns of the primary side N1 and the secondary side N2 of the transformer 122 is reduced without additional opening an air gap, thereby further decreasing the volume of the transformer 122.
The size of the resonant inductor 1216 may be selected according to practical situations, and is not particularly limited herein.
Referring to fig. 4, a fourth schematic diagram of a power factor correction converter 100 according to an embodiment of the disclosure is shown.
The power factor correction converter 100 includes a charge pump module 110 and a resonant isolation module 120, the resonant isolation module 120 includes a resonant circuit 121, a transformer 122 and a second rectifying circuit 123, the charge pump module 110 includes a first rectifying circuit 111 and a pump capacitor 112, and the resonant circuit 121 includes a first resonant capacitor 1211 and a second resonant capacitor 1212. The switching tube circuit 1213 includes a first switching tube 1214, a second switching tube 1215, and a switching tube circuit 1213. The charge pump module 110 also includes a bus capacitor 113. The resonant circuit 121 also includes a resonant inductor 1216. The first rectification circuit 111 includes a first diode 1111, a second diode 1112, a third diode 1113, and a fourth diode 1114; the second rectification circuit 123 includes a fifth diode 1231, a sixth diode 1232, and an output bus capacitor 1233.
An anode of the first diode 1111 is connected to a cathode of the fourth diode 1114, and a cathode of the first diode 1111 is connected to a cathode of the second diode 1112; the cathode of third diode 1113 is connected to the anode of second diode 1112, and the anode of third diode 1113 is connected to the anode of fourth diode 1114. An anode of the fifth diode 1231 is connected to one end of the secondary winding of the transformer 122, and a cathode of the fifth diode 1231 is connected to the load; an anode of the sixth diode 1232 is connected to the other end of the secondary winding of the transformer 122, and a cathode of the sixth diode 1232 is connected to a cathode of the fifth diode 1231. One end of the output bus capacitor 1233 is connected to one end of the load, and the other end of the output bus capacitor 1233 is connected to the other end of the load.
The first diode 1111, the second diode 1112, the third diode 1113, the fourth diode 1114, and the pump capacitor 112 form a basic charge pump structure.
Here, the secondary winding of the transformer 122 may include two windings, i.e., a winding N2 and a winding N3, a winding N2 is connected to the winding N3, a dotted end of the winding N2 is in the same direction as a dotted end of the primary winding N1 of the transformer 122, and a dotted end of the winding N2 is in the opposite direction to a dotted end of the primary winding N1 of the transformer 122. An anode of the fifth diode 1231 is connected to one end of the secondary winding N2 of the transformer 122, an anode of the sixth diode 1232 is connected to one end of the secondary winding N3 of the transformer 122, and one end of the winding N2 connected to the winding N3 is connected to one end of the load and then grounded.
Wherein, the cathode of the second diode 1112 is used as the positive output terminal B1 of the first rectification circuit 111, and the anode of the third diode 1113 is used as the negative output terminal B2 of the first rectification circuit 111; the anode of the first diode 1111 serves as the positive input terminal a1 of the first rectification circuit 111, and the cathode of the third diode 1113 serves as the negative input terminal a2 of the first rectification circuit 111.
In this way, by sampling and detecting the secondary side output voltage across the load and comparing the collected output voltage with the preset reference voltage, a driving signal for controlling the on/off of the first switch tube 1214 and the second switch tube 1215 can be generated and applied to the gate G1 of the first switch tube 1214 and the gate G2 of the second switch tube 1215 to control the on/off states of the first switch tube 1214 and the second switch tube 1215, so as to change the operating frequencies of the first switch tube 1214 and the second switch tube 1215, and thus the power factor correction converter 100 can stably operate.
The utility model provides a pair of power factor correction converter, power factor correction converter includes charge pump module and resonance isolation module, resonance isolation module includes resonant circuit and transformer, the charge pump module includes first rectifier circuit and pump capacitance, resonant circuit includes first resonant capacitor and second resonant capacitor, by first resonant capacitor, the second resonant capacitor, pump capacitance and bus capacitance constitute step-down circuit, be used for reducing bus voltage, only need increase a resonant capacitor and can make power factor correction converter can realize the PFC function at wide input voltage range, the higher problem of circuit control complexity that has avoided using a plurality of switch tubes and electric capacity to lead to.
The embodiment of the present disclosure further provides a control method of a power factor correction converter, which may be applied to the power factor correction converter 100 as shown in any one of fig. 1 to 4, and referring to fig. 5, the method is a flowchart of the control method of the power factor correction converter 100 provided in the embodiment of the present disclosure, and the method includes steps S101 to S103, where:
and S101, collecting the output current of the power factor correction converter 100.
And S102, comparing the output current with a preset reference current to generate a switch driving signal.
And S103, controlling the working frequency of the first switch tube 1214 and the second switch tube 1215 according to the switch driving signal.
As a possible implementation, a power factor correction converter circuit with a rated working point of 40W/1A is built.
Referring to fig. 6, a waveform diagram of an output current and an input current of the pfc converter 100 when the input current is 90V is provided for the embodiment of the present disclosure.
Here, when the input voltage is 90V, the output current ripple is 0.7%; the power factor is 0.951.
Referring to fig. 7, a waveform diagram of an output current and an input current of the pfc converter 100 when the input current is 120V is provided for the embodiment of the present disclosure.
Here, when the input voltage is 120V, the output current ripple is 0.8%; the power factor is 0.967.
Referring to fig. 8, a waveform diagram of an output current and an input current of the pfc converter 100 when the input current is 144V is provided for the embodiment of the present disclosure.
Here, when the input voltage is 144V, the output current ripple is 1.3%; the power factor is 0.974.
Referring to fig. 9, a waveform diagram of the output current and the input current of the pfc converter 100 when the input current is 198V is provided for the embodiment of the present disclosure.
Here, when the input voltage is 198V, the output current ripple is 2.1%; the power factor is 0.999.
Referring to fig. 10, a waveform diagram of an output current and an input current of the pfc converter 100 when the input current is 220V is provided according to an embodiment of the present disclosure.
Here, when the input voltage is 220V, the output current ripple is 2.3%; the power factor is 0.998.
Referring to fig. 11, a waveform diagram of an output current and an input current of the pfc converter 100 when the input current is 264V is provided for the embodiment of the present disclosure.
Here, when the input voltage is 264V, the output current ripple is 2.4%; the power factor is 0.984.
The control method of the power factor correction converter provided by the embodiment of the disclosure is applied to a power factor correction converter comprising a charge pump module and a resonance isolation module, wherein the resonance isolation module comprises a resonance circuit and a transformer, the charge pump module comprises a first rectification circuit and a pump capacitor, the resonance circuit comprises a first resonance capacitor and a second resonance capacitor, a voltage reduction loop is formed by the first resonance capacitor, the second resonance capacitor, the pump capacitor and a bus capacitor, the output current of the power factor correction converter is collected and compared with a preset reference current to generate a switch driving signal, and the working frequency of a first switch tube and the working frequency of a second switch tube are controlled according to the switch driving signal. The circuit can stably work in the state of low output current ripple and wide input voltage range.
It will be understood by those skilled in the art that in the method of the present invention, the order of writing the steps does not imply a strict order of execution and any limitations on the implementation, and the specific order of execution of the steps should be determined by their function and possible inherent logic.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the system described above may refer to the corresponding process in the foregoing method embodiment, and is not described herein again. In the several embodiments provided in the present disclosure, it should be understood that the disclosed system and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present disclosure. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present disclosure, which are used for illustrating the technical solutions of the present disclosure and not for limiting the same, and the scope of the present disclosure is not limited thereto, and although the present disclosure is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive of the technical solutions described in the foregoing embodiments or equivalent technical features thereof within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present disclosure, and should be construed as being included therein. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. A power factor correction converter is characterized by comprising a charge pump module and a resonance isolation module, wherein the resonance isolation module comprises a resonance circuit, a transformer and a second rectification circuit, the charge pump module comprises a first rectification circuit and a pump capacitor, and the resonance circuit comprises a first resonance capacitor, a second resonance capacitor and a switching tube circuit;
the input end of the charge pump module is connected with a voltage source, the output end of the charge pump module is connected with one end of the resonance isolation module, the other end of the resonance isolation module is connected with a load, one end of the second rectifying circuit is connected with the secondary winding of the transformer, and the other end of the second rectifying circuit is connected with the load;
one end of the pump capacitor is connected with the negative input end of the first rectifying circuit, and the other end of the pump capacitor is connected with the negative output end of the first rectifying circuit;
one end of the first resonant capacitor is connected with the negative input end of the first rectifying circuit, and the other end of the first resonant capacitor is connected with one end of the primary winding of the transformer;
one end of the second resonant capacitor is connected with the positive output end of the first rectifying circuit, and the other end of the second resonant capacitor is connected to one end of the primary winding of the transformer;
the switching tube circuit is connected between the positive output end of the first rectifying circuit and the negative output end of the first rectifying circuit and is connected with the transformer.
2. The pfc converter of claim 1 wherein the switching tube circuit comprises a first switching tube and a second switching tube;
the drain electrode of the first switching tube is connected with the positive output end of the charge pump module;
the drain electrode of the second switching tube is connected with the source electrode of the first switching tube, and the source electrode of the second switching tube is connected with the negative output end of the first rectifying circuit.
3. The pfc converter of claim 2 wherein the resonant circuit further comprises a resonant inductor;
one end of the resonant inductor is connected with one end of a primary winding of the transformer, and the other end of the resonant inductor is connected with a source electrode of the first switching tube.
4. The pfc converter of claim 1, wherein the charge pump module further comprises a bus capacitor;
one end of the bus capacitor is connected with the positive output end of the first rectifying circuit, and the other end of the bus capacitor is connected with the negative output end of the first rectifying circuit;
the first resonance capacitor, the second resonance capacitor, the pump capacitor and the bus capacitor form a voltage reduction loop for reducing the bus voltage.
5. The pfc converter of claim 1 wherein the first rectifying circuit comprises a first diode, a second diode, a third diode, and a fourth diode;
the anode of the first diode is connected with the cathode of the fourth diode, and the cathode of the first diode is connected with the cathode of the second diode;
the cathode of the third diode is connected with the anode of the second diode, and the anode of the third diode is connected with the anode of the fourth diode;
the cathode of the second diode is used as the positive output end of the first rectifying circuit, and the anode of the third diode is used as the negative output end of the first rectifying circuit;
the anode of the first diode is used as the positive input end of the first rectifying circuit, and the cathode of the third diode is used as the negative input end of the first rectifying circuit.
6. The pfc converter of claim 1 wherein the second rectifying circuit comprises a fifth diode, a sixth diode;
the anode of the fifth diode is connected with one end of the secondary winding of the transformer, and the cathode of the fifth diode is connected with a load;
and the anode of the sixth diode is connected with the other end of the secondary winding of the transformer, and the cathode of the sixth diode is connected with the cathode of the fifth diode.
7. The pfc converter of claim 1 wherein the second rectifier circuit further comprises an output bus capacitor;
one end of the output bus capacitor is connected with one end of the load, and the other end of the output bus capacitor is connected with the other end of the load.
8. The PFC converter of claim 2,
the source electrode of the second switch tube is grounded.
9. The PFC converter of claim 1,
the second rectifying circuit is grounded.
10. A control method of a power factor correction converter applied to the power factor correction converter according to any one of claims 1 to 9, comprising:
collecting the output current of the power factor correction converter;
comparing the output current with a preset reference current to generate a switch driving signal;
and controlling the working frequency of the first switching tube and the second switching tube according to the switch driving signal.
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| CN202111374720.0A CN113872432A (en) | 2021-11-17 | 2021-11-17 | Power factor correction converter and control method |
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Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223767A (en) * | 1991-11-22 | 1993-06-29 | U.S. Philips Corporation | Low harmonic compact fluorescent lamp ballast |
| US5488269A (en) * | 1995-02-10 | 1996-01-30 | General Electric Company | Multi-resonant boost high power factor circuit |
| JP2000021594A (en) * | 1998-06-30 | 2000-01-21 | Dong Il Technol Ltd | Ballast using piezoelectric element and power factor compensation circuit |
| US6642670B2 (en) * | 2001-10-12 | 2003-11-04 | Delta Electronics, Inc. | Ballast converter with power factor and current crest factor correction |
| WO2007065815A1 (en) * | 2005-12-07 | 2007-06-14 | Osram Gesellschaft mit beschränkter Haftung | Circuit arrangement and method for operating at least one led |
| CN101257255A (en) * | 2007-12-25 | 2008-09-03 | 南京航空航天大学 | Topological magnetic integrated converter suitable for LLC resonance series |
| CN101692397A (en) * | 2009-08-25 | 2010-04-07 | 中国电子科技集团公司第十四研究所 | Novel high power magnetic integrated components and preparation method thereof |
| US20110006700A1 (en) * | 2007-02-25 | 2011-01-13 | Osram Gesellschaft Mit Beschraenkter Haftung | Charge pump electronic ballast for use with low input voltage |
| CN101969267A (en) * | 2010-09-20 | 2011-02-09 | 中国电子科技集团公司第五十八研究所 | Megahertz full-bridge soft-switching converter |
| WO2011022718A2 (en) * | 2009-08-21 | 2011-02-24 | Osram Sylvania Inc. | Resonant inverter with sleep circuit |
| CN102611315A (en) * | 2012-03-22 | 2012-07-25 | 华为技术有限公司 | Resonant switching circuit |
| CN103595367A (en) * | 2013-11-07 | 2014-02-19 | 华为技术有限公司 | Magnetic integrated device and power conversion circuit |
| CN103683964A (en) * | 2013-12-20 | 2014-03-26 | 华为技术有限公司 | Resonant bidirectional transducer, uninterruptible power supply device and control method |
| CN103762846A (en) * | 2014-01-27 | 2014-04-30 | 陶顺祝 | Magnetic integrated resonant converter |
| WO2015143612A1 (en) * | 2014-03-24 | 2015-10-01 | Redisem Ltd. | Power converter circuit and method thereof |
| US20160205733A1 (en) * | 2015-01-12 | 2016-07-14 | Technical Consumer Products, Inc. | Low-cost dimming driver circuit with improved power factor |
| CN106057433A (en) * | 2016-06-28 | 2016-10-26 | 华为技术有限公司 | Magnetic integrated device, N-phase LLC resonant conversion circuit and power conversion device |
| CN206118104U (en) * | 2016-08-31 | 2017-04-19 | 吴江华能电子有限公司 | LED drive circuit based on two charge pump circuit |
| CN106936320A (en) * | 2017-05-11 | 2017-07-07 | 辽宁工程技术大学 | A kind of crisscross parallel magnetic integrated bi-directional full-bridge LLC resonant converter |
| WO2017117723A1 (en) * | 2016-01-05 | 2017-07-13 | Tridonic Gmbh & Co. Kg | Two-stage charge pump for led drivers |
| CN110495253A (en) * | 2017-01-26 | 2019-11-22 | 红色半导体公司 | Converter circuitry of power |
| US20210136894A1 (en) * | 2017-03-16 | 2021-05-06 | Tridonic Gmbh & Co Kg | Driver with charge pump circuit |
| CN213213321U (en) * | 2020-09-21 | 2021-05-14 | 杭州士兰微电子股份有限公司 | Power supply conversion circuit |
| CN112803747A (en) * | 2021-01-06 | 2021-05-14 | 西南交通大学 | Passive power factor correction converter with high power factor and low output ripple |
-
2021
- 2021-11-17 CN CN202111374720.0A patent/CN113872432A/en active Pending
Patent Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223767A (en) * | 1991-11-22 | 1993-06-29 | U.S. Philips Corporation | Low harmonic compact fluorescent lamp ballast |
| US5488269A (en) * | 1995-02-10 | 1996-01-30 | General Electric Company | Multi-resonant boost high power factor circuit |
| JP2000021594A (en) * | 1998-06-30 | 2000-01-21 | Dong Il Technol Ltd | Ballast using piezoelectric element and power factor compensation circuit |
| US6642670B2 (en) * | 2001-10-12 | 2003-11-04 | Delta Electronics, Inc. | Ballast converter with power factor and current crest factor correction |
| WO2007065815A1 (en) * | 2005-12-07 | 2007-06-14 | Osram Gesellschaft mit beschränkter Haftung | Circuit arrangement and method for operating at least one led |
| US20110006700A1 (en) * | 2007-02-25 | 2011-01-13 | Osram Gesellschaft Mit Beschraenkter Haftung | Charge pump electronic ballast for use with low input voltage |
| CN101257255A (en) * | 2007-12-25 | 2008-09-03 | 南京航空航天大学 | Topological magnetic integrated converter suitable for LLC resonance series |
| WO2011022718A2 (en) * | 2009-08-21 | 2011-02-24 | Osram Sylvania Inc. | Resonant inverter with sleep circuit |
| CN101692397A (en) * | 2009-08-25 | 2010-04-07 | 中国电子科技集团公司第十四研究所 | Novel high power magnetic integrated components and preparation method thereof |
| CN101969267A (en) * | 2010-09-20 | 2011-02-09 | 中国电子科技集团公司第五十八研究所 | Megahertz full-bridge soft-switching converter |
| CN102611315A (en) * | 2012-03-22 | 2012-07-25 | 华为技术有限公司 | Resonant switching circuit |
| CN103595367A (en) * | 2013-11-07 | 2014-02-19 | 华为技术有限公司 | Magnetic integrated device and power conversion circuit |
| CN103683964A (en) * | 2013-12-20 | 2014-03-26 | 华为技术有限公司 | Resonant bidirectional transducer, uninterruptible power supply device and control method |
| CN103762846A (en) * | 2014-01-27 | 2014-04-30 | 陶顺祝 | Magnetic integrated resonant converter |
| WO2015143612A1 (en) * | 2014-03-24 | 2015-10-01 | Redisem Ltd. | Power converter circuit and method thereof |
| US20160205733A1 (en) * | 2015-01-12 | 2016-07-14 | Technical Consumer Products, Inc. | Low-cost dimming driver circuit with improved power factor |
| WO2017117723A1 (en) * | 2016-01-05 | 2017-07-13 | Tridonic Gmbh & Co. Kg | Two-stage charge pump for led drivers |
| CN106057433A (en) * | 2016-06-28 | 2016-10-26 | 华为技术有限公司 | Magnetic integrated device, N-phase LLC resonant conversion circuit and power conversion device |
| CN206118104U (en) * | 2016-08-31 | 2017-04-19 | 吴江华能电子有限公司 | LED drive circuit based on two charge pump circuit |
| CN110495253A (en) * | 2017-01-26 | 2019-11-22 | 红色半导体公司 | Converter circuitry of power |
| US20210136894A1 (en) * | 2017-03-16 | 2021-05-06 | Tridonic Gmbh & Co Kg | Driver with charge pump circuit |
| CN106936320A (en) * | 2017-05-11 | 2017-07-07 | 辽宁工程技术大学 | A kind of crisscross parallel magnetic integrated bi-directional full-bridge LLC resonant converter |
| CN213213321U (en) * | 2020-09-21 | 2021-05-14 | 杭州士兰微电子股份有限公司 | Power supply conversion circuit |
| CN112803747A (en) * | 2021-01-06 | 2021-05-14 | 西南交通大学 | Passive power factor correction converter with high power factor and low output ripple |
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