WO2022017323A1 - 图腾柱pfc电路、控制方法、线路板及空调器 - Google Patents

图腾柱pfc电路、控制方法、线路板及空调器 Download PDF

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Publication number
WO2022017323A1
WO2022017323A1 PCT/CN2021/107106 CN2021107106W WO2022017323A1 WO 2022017323 A1 WO2022017323 A1 WO 2022017323A1 CN 2021107106 W CN2021107106 W CN 2021107106W WO 2022017323 A1 WO2022017323 A1 WO 2022017323A1
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WIPO (PCT)
Prior art keywords
switch
switch tube
module
capacitor
power supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/107106
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English (en)
French (fr)
Inventor
张杰楠
文先仕
曾贤杰
胡斌
徐锦清
钟雄斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Filing date
Publication date
Application filed by Midea Group Co Ltd, GD Midea Air Conditioning Equipment Co Ltd filed Critical Midea Group Co Ltd
Publication of WO2022017323A1 publication Critical patent/WO2022017323A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/219—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
    • 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

Definitions

  • the invention relates to the technical field of air conditioners, in particular to a totem pole PFC circuit, a control method, a circuit board and an air conditioner.
  • totem pole PFC circuits and voltage doubler circuits are both very commonly used current topologies.
  • the totem pole PFC topology can boost the rectified voltage
  • the voltage doubler circuit can double the output voltage of the rectifier circuit, but cannot boost the voltage.
  • Both circuit topologies have their own advantages. If the two circuits are simply combined, the current that charges the capacitor will flow through the anti-parallel diode of the switch tube, and the tube voltage drop of the diode will be large, resulting in large conduction loss and low voltage conversion efficiency.
  • the purpose of the present invention is to solve one of the technical problems existing in the prior art at least to a certain extent, and to provide a totem pole PFC circuit, a control method, a circuit board, an air conditioner and a computer storage medium, which can reduce the conduction of the PFC circuit. loss and improve the voltage conversion efficiency.
  • the bridge circuit includes a first bridge arm and a second bridge arm connected in parallel, the first bridge arm includes a first switch tube and a second switch tube connected in series, the second bridge arm includes a third switch tube and a fourth switch tube connected in series with each other, the first switch tube, the second switch tube, the third switch tube and the fourth switch tube all have diodes in anti-parallel;
  • bus capacitor module includes a first capacitor and a second capacitor, the first capacitor and the second capacitor are connected in series and then connected in parallel to the output end of the bridge circuit;
  • one end of the switch module is connected to the connection point of the third switch tube and the fourth switch tube, and the other end of the switch module is connected to the connection of the first capacitor and the second capacitor point;
  • a control module respectively connected to the first switch tube, the second switch tube, the third switch tube, the fourth switch tube and the switch module, for controlling the opening and closing of the switch module, and
  • the switch module When the switch module is closed, the first switch tube, the second switch tube, the third switch tube and the fourth switch tube are controlled to be turned on and off, so as to be in the positive half of the AC power supply.
  • the first capacitor Periodically, the first capacitor is charged through the first switch tube, and the second capacitor is charged through the second switch tube during the negative half cycle of the AC power supply.
  • the totem-pole PFC circuit has at least the following beneficial effects: when the switch module is turned on, the totem-pole PFC circuit operates in the totem-pole PFC mode, and when the switch module is closed, the totem-pole PFC circuit operates in the totem-pole voltage doubler PFC mode , the control module controls the opening and closing of the switch module, so that the totem-pole PFC circuit can switch between the totem-pole PFC mode and the totem-pole voltage multiplier PFC mode; when running in the totem-pole voltage multiplier PFC mode, the control module controls the first switch of the The conduction and cut-off of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube make the first capacitor charge through the first switch tube in the positive half cycle of the AC power supply and pass through the second switch tube in the negative half cycle of the AC power supply.
  • the switch tube charges the second capacitor, which avoids charging the capacitor through the anti-parallel diode of the switch tube, reduces the conduction loss, and
  • the anode of the first bus diode is connected to one end of the first bridge arm and one end of the second bridge arm, the The cathode of the first busbar diode is connected to one end of the busbar capacitor module; the anode of the second busbar diode is connected to the other end of the busbar capacitor module, and the cathode of the second busbar diode is connected to the first bridge the other end of the arm and the other end of the second bridge arm.
  • the controlling the opening and closing of the switch module includes:
  • the switch module When the demanded voltage is greater than or equal to twice the peak voltage of the AC power supply, the switch module is controlled to be closed.
  • the control switch module if the demanded voltage is less than twice the peak voltage of the AC power supply, the control switch module is turned off, so that the totem-pole PFC circuit operates in the totem-pole PFC mode; if the demanded voltage is greater than or equal to two times the peak voltage of the AC power supply times, the control switch module is closed, so that the totem pole PFC circuit operates in the totem pole voltage doubler PFC mode, and the state of the switch module can be controlled according to the voltage level of different requirements to select the appropriate operation mode.
  • the present invention further includes a current detection module for detecting the AC current value input by the AC power supply, the current detection module is connected in series with the input end of the bridge circuit, and the output end of the current detection module is connected to the control module.
  • the current detection module transmits the detected AC current value from the output end to the control module, so that the control module controls the corresponding switch tube according to the AC current value.
  • the control of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube is turned on and off, so as to be in the positive state of the AC power supply.
  • the first capacitor is charged through the first switch in a half cycle
  • the second capacitor is charged through the second switch in the negative half cycle of the AC power supply, including:
  • the second switch tube, the third switch tube and the fourth switch tube are controlled to be turned off, and the first switch tube is controlled when the AC current value is detected to be greater than zero turn on;
  • the first switch tube, the third switch tube and the fourth switch tube are controlled to be turned off, and the second switch tube is controlled when the AC current value is detected to be less than zero on.
  • the totem-pole PFC circuit when the totem-pole PFC circuit operates in the totem-pole voltage multiplier PFC mode, if the first switch, the second switch, the third switch and the fourth switch have no driving signal at this time, the current is passed through The anti-parallel diode of the switch tube is charged for the bus capacitor module. At this time, the tube voltage drop of the diode is large, which will lead to large loss. Therefore, in the positive half cycle of the AC power supply, when the AC current value is detected to be greater than zero, the first switch tube is controlled to conduct electricity. is turned on, so that the charging current is charged to the first capacitor through the first switch tube.
  • the second switch tube In the negative half cycle of the AC power supply, when the AC current value is detected to be less than zero, the second switch tube is controlled to be turned on, so that the charging current passes through the second switch tube to the first capacitor.
  • the charging of the second capacitor avoids charging the capacitor through the anti-parallel diode of the switch tube, reduces the conduction loss, and improves the voltage conversion efficiency.
  • control module is further configured to control the first switch transistor and the fourth switch transistor to be turned on during the positive half cycle of the AC power supply and in the case that the switch module is disconnected
  • the negative half cycle of the AC power supply is turned off, and the second switch tube and the third switch tube are controlled to be turned off during the positive half cycle of the AC power supply and turned on during the negative half cycle of the AC power supply.
  • the totem-pole PFC circuit operates in the totem-pole PFC mode. If the first switch tube, the second switch tube, the third switch tube and the fourth switch tube have no driving signal at this time, the current is The bus capacitor module is charged through the anti-parallel diode of the switch tube.
  • the tube voltage drop of the diode is large, which will lead to large loss. Therefore, in the positive half cycle of the AC power supply, the first switch tube and the fourth switch tube are controlled to be turned on. , the AC power supply charges the first capacitor and the second capacitor through the first switch tube and the fourth switch tube, and in the negative half cycle of the AC power supply, the second switch tube and the third switch tube are controlled to be turned on, and the AC power supply passes through the second switch tube.
  • the tube and the third switch tube charge the first capacitor and the second capacitor, which avoids charging the capacitor through the anti-parallel diode of the switch tube, reduces the conduction loss, and improves the voltage conversion efficiency.
  • the present invention further includes a DC voltage detection module, the DC voltage detection module is connected in parallel with the rear end of the bus capacitor module, and an output end of the DC voltage detection module is connected to the control module.
  • the DC voltage detection module transmits the detected DC bus voltage value from the output end to the control module, so that the control module can control and adjust according to the DC bus voltage value.
  • an AC voltage detection module is further included, the AC voltage detection module is connected in parallel between the AC power supply and the bridge circuit, and an output end of the AC voltage detection module is connected to the control module.
  • the AC voltage detection module transmits the detected AC voltage value from the output end to the control module, so that the control module can control and adjust according to the AC voltage value.
  • the switch module includes a first diode, a second diode, a third diode, a fourth diode and a fifth switch transistor, the first diode and The second diode is connected in series to form the first branch of the diode, the third diode and the fourth diode are connected in series to form the second branch of the diode, the fifth switch tube and the diode are connected in series to form the second branch of the diode.
  • connection point of the first diode and the second diode is drawn out as one end of the switch module, the third diode and the The connection point of the fourth diode is drawn out as the other end of the switch module.
  • This embodiment provides a specific circuit structure of the switch module.
  • the closed state of the switch module corresponds to the conduction of the fifth switch tube, and the disconnection of the switch module corresponds to the cut-off of the fifth switch tube.
  • the switch module includes a sixth switch transistor and a seventh switch transistor that are connected in antiparallel.
  • This embodiment provides another specific circuit structure of the switch module.
  • the closed state of the switch module corresponds to the sixth switch tube and the seventh switch tube being turned on at the same time or the sixth switch tube being turned on during the positive half cycle of the AC power supply.
  • the seventh switch tube is turned on during the negative half cycle of the AC power supply; the disconnection of the switch module corresponds to the simultaneous turn-off of the sixth switch tube and the seventh switch tube.
  • the switch module includes an eighth switch tube and a ninth switch tube connected in reverse series, and diodes are both connected in anti-parallel to the eighth switch tube and the ninth switch tube.
  • This embodiment provides another specific circuit structure of the switch module.
  • the closing of the switch module corresponds to the simultaneous conduction of the eighth switch tube and the ninth switch tube or the conduction of the eighth switch tube in the positive half cycle of the AC power supply.
  • the ninth switch tube is turned on; the disconnection of the switch module corresponds to the simultaneous turn-off of the eighth switch tube and the ninth switch tube.
  • the switch module is a relay or a mechanical switch device.
  • the switch module may also use the other two embodiments provided in this embodiment.
  • the totem-pole PFC circuit includes:
  • the bridge circuit includes a first bridge arm and a second bridge arm connected in parallel, the first bridge arm includes a first switch tube and a second switch tube connected in series, the second bridge arm includes a third switch tube and a fourth switch tube connected in series with each other, the first switch tube, the second switch tube, the third switch tube and the fourth switch tube all have diodes in anti-parallel;
  • bus capacitor module includes a first capacitor and a second capacitor, the first capacitor and the second capacitor are connected in series and then connected in parallel to the output end of the bridge circuit;
  • one end of the switch module is connected to the connection point of the third switch tube and the fourth switch tube, and the other end of the switch module is connected to the connection of the first capacitor and the second capacitor point;
  • control module connecting the first switch tube, the second switch tube, the third switch tube, the fourth switch tube and the switch module;
  • the method includes:
  • control module controls the opening and closing of the switch module
  • the control module controls the on-off of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube when the switch module is turned on, so that the AC power supply can be switched on and off.
  • the first capacitor is charged through the first switch in a positive half cycle
  • the second capacitor is charged through the second switch in a negative half cycle of the AC power supply.
  • the method for controlling a totem-pole PFC circuit has at least the following beneficial effects: when the switch module is turned on, the totem-pole PFC circuit operates in the totem-pole PFC mode, and when the switch module is closed, the totem-pole PFC circuit operates at the totem-pole voltage multiplier In PFC mode, the control module controls the opening and closing of the switch module, so that the totem-pole PFC circuit can switch between the totem-pole PFC mode and the totem-pole voltage multiplier PFC mode; when running in the totem-pole voltage multiplier PFC mode, the control module controls the A switch tube, a second switch tube, a third switch tube and a fourth switch tube are turned on and off, so that the first capacitor is charged through the first switch tube in the positive half cycle of the AC power supply and passes through the negative half cycle of the AC power supply
  • the second switch tube charges the second capacitor, which avoids charging the capacitor through the anti-parallel diode of the switch tube, reduces the conduction loss, and improves
  • the controlling the opening and closing of the switch module includes:
  • the control module controls the switch module to turn off
  • the control module controls the switch module to close.
  • the control switch module if the demanded voltage is less than twice the peak voltage of the AC power supply, the control switch module is turned off, so that the totem-pole PFC circuit operates in the totem-pole PFC mode; if the demanded voltage is greater than or equal to two times the peak voltage of the AC power supply times, the control switch module is closed, so that the totem pole PFC circuit operates in the totem pole voltage doubler PFC mode, and the state of the switch module can be controlled according to the voltage level of different requirements to select the appropriate operation mode.
  • the totem pole PFC circuit further includes a current detection module for detecting the AC current value input by the AC power supply, the current detection module is connected in series with the input end of the bridge circuit, and the current The output end of the detection module is connected to the control module;
  • the tube charges the first capacitor and charges the second capacitor through the second switch tube during the negative half cycle of the AC power supply, including:
  • the second switch tube, the third switch tube and the fourth switch tube are controlled to be turned off, and the first switch tube is controlled when the AC current value is detected to be greater than zero turn on;
  • the first switch tube, the third switch tube and the fourth switch tube are controlled to be turned off, and the second switch tube is controlled when the AC current value is detected to be less than zero on.
  • the totem-pole PFC circuit when the totem-pole PFC circuit operates in the totem-pole voltage multiplier PFC mode, if there is no driving signal for the first switch, the second switch, the third switch and the fourth switch at this time, the current is passed through The anti-parallel diode of the switch tube is charged for the bus capacitor module. At this time, the tube voltage drop of the diode is large, which will lead to large loss. Therefore, in the positive half cycle of the AC power supply, when the AC current value is detected to be greater than zero, the first switch tube is controlled to conduct electricity. is turned on, so that the charging current is charged to the first capacitor through the first switch tube.
  • the second switch tube In the negative half cycle of the AC power supply, when the AC current value is detected to be less than zero, the second switch tube is controlled to be turned on, so that the charging current passes through the second switch tube to the first capacitor.
  • the charging of the second capacitor avoids charging the capacitor through the anti-parallel diode of the switch tube, reduces the conduction loss, and improves the voltage conversion efficiency.
  • the control module controls the first switch transistor and the fourth switch transistor to be turned on in the positive half cycle of the AC power supply and in the AC power supply.
  • the negative half cycle of the power supply is turned off, and the second switch tube and the third switch tube are controlled to be turned off during the positive half cycle of the AC power supply and turned on during the negative half cycle of the AC power supply.
  • the totem-pole PFC circuit operates in the totem-pole PFC mode. If the first switch tube, the second switch tube, the third switch tube and the fourth switch tube have no driving signal at this time, the current is The bus capacitor module is charged through the anti-parallel diode of the switch tube.
  • the tube voltage drop of the diode is large, which will lead to large loss. Therefore, in the positive half cycle of the AC power supply, the first switch tube and the fourth switch tube are controlled to be turned on. , the AC power supply charges the first capacitor and the second capacitor through the first switch tube and the fourth switch tube, and in the negative half cycle of the AC power supply, the second switch tube and the third switch tube are controlled to be turned on, and the AC power supply passes through the second switch tube.
  • the tube and the third switch tube charge the first capacitor and the second capacitor, which avoids charging the capacitor through the anti-parallel diode of the switch tube, reduces the conduction loss, and improves the voltage conversion efficiency.
  • the circuit board according to the embodiment of the third aspect of the present invention includes the totem-pole PFC circuit according to the embodiment of the first aspect of the present invention.
  • the circuit board according to the embodiment of the present invention has at least the following beneficial effects: when the switch module is turned on, the totem-pole PFC circuit operates in the totem-pole PFC mode; when the switch module is closed, the totem-pole PFC circuit operates in the totem-pole voltage multiplier PFC mode, and the control
  • the module controls the opening and closing of the switch module according to the demand voltage and the peak voltage of the AC power supply, so that the totem-pole PFC circuit can switch between the totem-pole PFC mode and the totem-pole voltage multiplier PFC mode; when operating in the totem-pole voltage multiplier PFC mode,
  • the control module controls the on-off of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube, so that the AC power supply charges the first capacitor through the first switch tube in the positive half cycle and charges the first capacitor in the negative half cycle.
  • Periodically charging the second capacitor through the second switch tube avoiding charging the capacitor through the anti-parallel diode of the switch tube, reducing the con
  • An air conditioner according to an embodiment of the fourth aspect of the present invention includes the circuit board according to the embodiment of the third aspect of the present invention. or,
  • the at least one processor comprising at least one processor and a memory for communicative connection with the at least one processor; the memory storing instructions executable by the at least one processor, the instructions being executed by the at least one processor to The at least one processor is enabled to execute the totem-pole PFC circuit control method according to the embodiment of the second aspect of the present invention.
  • the air conditioner according to the embodiment of the present invention has at least the following beneficial effects: when the switch module is turned on, the totem-pole PFC circuit operates in the totem-pole PFC mode; when the switch module is closed, the totem-pole PFC circuit operates in the totem-pole voltage multiplier PFC mode, and the control
  • the module controls the opening and closing of the switch module, so that the totem-pole PFC circuit can switch between the totem-pole PFC mode and the totem-pole voltage multiplier PFC mode; when running in the totem-pole voltage multiplier PFC mode, the control module controls the first switch tube, The second switch tube, the third switch tube and the fourth switch tube are turned on and off, so that the first capacitor is charged through the first switch tube in the positive half cycle of the AC power supply and passed through the second switch tube in the negative half cycle of the AC power supply Charging to the second capacitor avoids charging the capacitor through the anti-parallel diode of the switch tube, reduces the conduction loss, and improves the voltage conversion efficiency.
  • a computer-readable storage medium is characterized in that, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the The totem pole PFC circuit control method described in the second embodiment.
  • FIG. 1 is a circuit schematic diagram of a totem pole PFC circuit provided by an embodiment of the present invention
  • FIG. 2 is a schematic circuit diagram of another totem pole PFC circuit provided by an embodiment of the present invention.
  • FIG. 3 is a partial flowchart of a method for controlling a totem pole PFC circuit provided by an embodiment of the present invention
  • FIG. 4 is a state switching diagram of a totem-pole PFC circuit provided in an embodiment of the present invention working in a totem-pole PFC mode;
  • FIG. 5 is a state switching diagram of a totem-pole PFC circuit provided in an embodiment of the present invention working in a totem-pole voltage multiplier PFC mode;
  • FIG. 6 is a circuit schematic diagram of a switch module of a totem pole PFC circuit provided by an embodiment of the present invention.
  • FIG. 7 is another circuit schematic diagram of a switch module of a totem pole PFC circuit provided by an embodiment of the present invention.
  • FIG. 8 is another circuit schematic diagram of a switch module of a totem pole PFC circuit provided by an embodiment of the present invention.
  • FIG. 9 is a flowchart of a method for controlling a totem pole PFC circuit according to an embodiment of the present invention.
  • Embodiments of the present invention provide a totem-pole PFC circuit, a control method, a circuit board, an air conditioner and a computer storage medium, which can reduce the conduction loss of the totem-pole PFC circuit and improve the voltage conversion efficiency.
  • FIG. 1 is a schematic structural diagram of a totem-pole PFC circuit provided by an embodiment of the first aspect of the present invention.
  • the totem-pole PFC circuit includes a bridge circuit 100, a reactor L1, a bus capacitor module 200, a switch module 300, and a control Module 400.
  • the bridge circuit 100 includes a first bridge arm and a second bridge arm connected in parallel with each other, the first bridge arm includes a first switch transistor Q1 and a second switch transistor Q2 connected in series, and the second bridge arm includes a third switch transistor connected in series with each other Q3 and the fourth switch tube Q4, the first switch tube Q1, the second switch tube Q2, the third switch tube Q3 and the fourth switch tube Q4 form a bridge circuit, wherein the first switch tube is connected in anti-parallel with a diode D1, A diode D2 is connected in anti-parallel to the second switch tube, a diode D3 is connected in anti-parallel to the third switch tube, and a diode D4 is connected in anti-parallel to the fourth switch tube;
  • One end of the reactor L1 is connected to one end of the AC power source AC, the other end of the reactor L1 is connected to the connection point of the first switch tube Q1 and the second switch tube Q2, and the other end of the AC power source AC is connected to the third switch tube Q3 and the first switch tube Q3.
  • the busbar capacitor module 200 includes a first capacitor C1 and a second capacitor C2, and the first capacitor C1 and the second capacitor C2 are connected in series to the output end of the bridge circuit 100 in parallel;
  • One end of the switch module 300 is connected to the connection point of the third switch tube Q3 and the fourth switch tube Q4, and the other end of the switch module 300 is connected to the connection point of the first capacitor C1 and the second capacitor C2;
  • the control module 400 is respectively connected to the first switch tube Q1, the second switch tube Q2, the third switch tube Q3, the fourth switch tube Q4 and the switch module 300, and is used to control the opening and closing of the switch module 300, and is used to control the opening and closing of the switch module 300.
  • the first switch Q1, the second switch Q2, the third switch Q3 and the fourth switch Q4 are controlled to be turned on and off, so that in the positive half cycle of the AC power supply AC, the first switch Q1 goes to the second switch.
  • a capacitor C1 is charged and charged to the second capacitor C2 through the second switch Q2 during the negative half cycle of the AC power source AC.
  • the totem-pole PFC circuit of this embodiment further includes a first bus diode D10 and a second Two busbar diodes D20, the anode of the first busbar diode D10 is connected to one end of the first bridge arm and one end of the second bridge arm, and the cathode of the first busbar diode D10 is connected to one end of the busbar capacitor module 20; The anode is connected to the other end of the bus capacitor module 20, and the cathode of the second bus diode D20 is connected to the other end of the first bridge arm and the other end of the second bridge arm.
  • the first bus diode D10 and the second bus diode D20 By arranging the first bus diode D10 and the second bus diode D20, the reverse discharge of the electric energy stored in the bus capacitor module 200 can be avoided.
  • the switch module 300 When the switch module 300 is turned on, the totem-pole PFC circuit operates in the totem-pole PFC mode. When the switch module 300 is closed, the totem-pole PFC circuit operates in the totem-pole voltage doubler PFC mode. The opening and closing of the switch module 300 is controlled, so that the totem-pole PFC circuit can switch between the totem-pole PFC mode and the totem-pole voltage multiplier PFC mode.
  • the control module 400 controls the switch module 300 to turn off, so that the totem-pole PFC circuit operates in the totem-pole PFC mode, that is, the control module 400 Control the first switch transistor Q1 and the fourth switch transistor Q4 to be turned on in the positive half cycle of the AC power supply AC and turn off in the negative half cycle of the AC power supply AC, and control the second switch transistor Q2 and the third switch transistor Q3 in the AC power supply AC.
  • the positive half cycle of AC is turned off and turned on in the negative half cycle of the AC power supply, as shown in Figure 4.
  • the alternating current flows through the reactor L1, the first switch tube Q1, the first capacitor C1, the second capacitor C2 and the fourth switch tube Q4 in turn to form a loop to supply the first capacitor C1.
  • the second capacitor C2 is charged; in the negative half cycle of the AC power supply AC, the AC current flows through the third switch tube Q3, the first capacitor C1, the second capacitor C2, the second switch tube Q2 and the reactor L1 in turn to form a loop, The first capacitor C1 and the second capacitor C2 are charged; the charging of the capacitor through the anti-parallel diode of the switch tube is avoided, the conduction loss is reduced, and the voltage conversion efficiency is improved.
  • the control module 400 controls the switch module 300 to close, so that the totem pole PFC circuit operates in the totem pole voltage doubler PFC mode;
  • the first switch Q1, the second switch Q2, the third switch Q3 and the fourth switch Q4 have no driving signal.
  • the control logic is the same as the traditional voltage doubling rectifier circuit.
  • the current passes through the anti-parallel diode of the switch as the bus capacitor. When the module 200 is charged, the voltage drop of the diode is large, which will lead to large losses.
  • the control module 400 controls the turn-on and turn-off of the first switch transistor Q1, the second switch transistor Q2, the third switch transistor Q3 and the fourth switch transistor Q4, so that the AC power supply AC is in the positive state.
  • the first capacitor C1 is charged through the first switch tube Q1 in the half cycle and the second capacitor C2 is charged through the second switch tube Q2 in the negative half cycle, which avoids charging the capacitor through the anti-parallel diode of the switch tube and reduces the conduction loss. , improve the voltage conversion efficiency.
  • the totem-pole PFC circuit when the totem-pole PFC circuit operates in the totem-pole voltage multiplier PFC mode, in the positive half cycle of the AC power supply AC, the second switch Q2, the third switch Q3 and the fourth switch Q4 are controlled to be turned off, And when it is detected that the alternating current value Is is greater than zero, the first switch tube Q1 is controlled to be turned on, and when it is detected that the alternating current value Is is zero, the first switch tube Q1 is controlled to be turned off;
  • the first switch transistor Q1, the third switch transistor Q3 and the fourth switch transistor Q4 are controlled to be turned off, and the second switch transistor Q2 is controlled to be turned on when the AC current value is detected to be less than zero.
  • the second switch transistor Q2 is controlled to be turned off.
  • the totem-pole PFC circuit provided by the embodiment of the present invention can control the state of the switch module 300 according to different demand voltages, so as to select whether to operate in the totem-pole PFC mode or the totem-pole voltage multiplier PFC mode, and when operating in the totem-pole voltage multiplier PFC mode
  • the AC power supply AC passes through the first switch transistor Q1 to the first capacitor during the positive half cycle.
  • C1 is charged and charged to the second capacitor C2 through the second switch tube Q2 in the negative half cycle, so as to realize synchronous rectification control, reduce the conduction loss, and improve the voltage conversion efficiency of the circuit.
  • the totem pole PFC circuit further includes a current detection module 500 for detecting the AC current value Is input by the AC power supply, and the current detection module 500 is connected in series with the AC power supply AC and the power supply. Between the bridge circuits 100 , the output end of the current detection module 500 is connected to the control module 400 .
  • the current detection module 500 may be composed of a current transformer and an external detection circuit. The current transformer may be connected in series with the live wire end or the neutral wire end of the AC power supply.
  • the specific circuit of the current detection module 500 can refer to the prior art, which will not be repeated here. .
  • the totem pole PFC circuit further includes a DC voltage detection module 600 .
  • the DC voltage detection module 600 is connected in parallel with the rear end of the bus capacitor module 200 , and the output of the DC voltage detection module 600 The terminal is connected to the control module 400 .
  • the DC voltage detection module 600 may be composed of a simple circuit based on a resistive voltage dividing structure, and the specific circuit may refer to the prior art, which will not be repeated here.
  • the totem-pole PFC circuit further includes an AC voltage detection module 700, the AC voltage detection module 700 is connected in parallel between the AC power source AC and the bridge circuit 100, and the AC voltage detection module The output end of 700 is connected to the control module 400 .
  • the specific circuit of the AC voltage detection module 700 may refer to the prior art, and details are not repeated here.
  • the switch module 300 may be a relay, a mechanical switch device, or a bidirectionally controllable high-frequency switch, wherein the bidirectionally controllable high-frequency switch may be shown in FIGS. 6 to 6 .
  • FIGS. 6 to 6 One of the structures shown in 8.
  • the switch module 300 shown in FIG. 6 includes a first diode D-1, a second diode D-2, a third diode D-3, a fourth diode D-4, and a fifth diode D-1.
  • Switch tube Q5 the first diode D-1 and the second diode D-2 are connected in series to form the first branch of the diode
  • the third diode D-3 and the fourth diode D-4 are connected in series to form a diode
  • the fifth switch tube Q5 the first branch of the diode and the second branch of the diode are connected in parallel with each other, and the connection point of the first diode D-1 and the second diode D-2 is drawn out as the switch module 300
  • One end of the switch module 300 , the connection point of the third diode D-3 and the fourth diode D-4 is drawn out as the other end of the switch module 300 .
  • the closed state of the switch module 300 corresponds to the conduction of the fifth switch tube Q5, and the disconnection of the switch
  • the switch module 300 shown in FIG. 7 includes a sixth switch transistor Q6 and a seventh switch transistor Q7 connected in antiparallel.
  • the closing of the switch module 300 corresponds to the sixth switch transistor Q6 and the seventh switch transistor Q7 being turned on at the same time or the sixth switch transistor Q6 being turned on during the positive half cycle of the AC power supply AC, and the seventh switch tube Q6 being turned on during the negative half cycle of the AC power supply AC.
  • the switch tube Q7 is turned on; the disconnection of the switch module 300 corresponds to the simultaneous turn-off of the sixth switch tube Q6 and the seventh switch tube Q7.
  • the switch module 300 shown in FIG. 8 includes an eighth switch transistor Q8 and a ninth switch transistor Q9 connected in reverse series, the eighth switch transistor Q8 is connected in anti-parallel with an eighth diode D-8, and the ninth switch transistor Q9 is connected in reverse-parallel with an eighth diode D-8 Ninth diode D-9.
  • the closing of the switch module 300 corresponds to the eighth switch transistor Q8 and the ninth switch transistor Q9 being turned on at the same time or the eighth switch transistor Q8 being turned on during the positive half cycle of the AC power supply AC, and the ninth switch tube Q8 being turned on during the negative half cycle of the AC power supply AC.
  • the switch tube Q9 is turned on; the disconnection of the switch module 300 corresponds to the turn-off of the eighth switch tube Q8 and the ninth switch tube Q9 at the same time.
  • the embodiment of the second aspect of the present invention provides a totem-pole PFC circuit control method, which is applied to the totem-pole PFC circuit shown in FIG. 1 and FIG. 2 .
  • the control method includes the following steps:
  • control module 400 controls the opening and closing of the switch module 300;
  • the control module 400 controls the first switch transistor Q1, the second switch transistor Q2, the third switch transistor Q3 and the fourth switch transistor Q4 to be turned on and off when the switch module 300 is turned on, so that the positive half cycle of the alternating current power supply AC
  • the first capacitor C1 is charged through the first switch tube Q1 and the second capacitor C2 is charged through the second switch tube Q2 during the negative half cycle of the alternating current power supply AC.
  • step S100 specifically includes:
  • the control module 400 controls the switch module 300 to turn off, so that the totem-pole PFC circuit operates in the totem-pole PFC mode; when the demanded voltage is greater than or equal to the peak value of the AC power supply AC When the voltage is twice the voltage, the control module 400 controls the switch module 300 to close, so that the totem-pole PFC circuit operates in the totem-pole voltage doubler PFC mode.
  • the first switch transistor Q1, the second switch transistor Q2, the third switch transistor Q3 and the fourth switch transistor Q4 are controlled to be turned on and off, so as to pass the first switch transistor Q1 during the positive half cycle of the alternating current power supply AC Charge the first capacitor C1 and charge the second capacitor C2 through the second switch tube Q2 during the negative half cycle of the AC power supply, specifically including:
  • the second switch transistor Q2, the third switch transistor Q3 and the fourth switch transistor Q4 are controlled to be turned off, and the first switch transistor Q1 is controlled to be turned on when it is detected that the AC current value Is is greater than zero , when it is detected that the alternating current value Is is zero, the first switch tube Q1 is controlled to be turned off;
  • the first switch transistor Q1, the third switch transistor Q3 and the fourth switch transistor Q4 are controlled to be turned off, and the second switch transistor Q2 is controlled to be turned on when the AC current value is detected to be less than zero.
  • the second switch transistor Q2 is controlled to be turned off.
  • the state of the switch module 300 can be controlled according to different demand voltages, so as to select whether to operate in the totem-pole PFC mode or the totem-pole voltage multiplier PFC mode, and in the totem-pole multiplier In the voltage PFC mode, by controlling the first switch transistor Q1, the second switch transistor Q2, the third switch transistor Q3 and the fourth switch transistor Q4 to be turned on and off, the AC power supply AC passes through the first switch transistor Q1 in the positive half cycle.
  • the first capacitor C1 is charged and is charged to the second capacitor C2 through the second switch tube Q2 in the negative half cycle, so as to realize synchronous rectification control, reduce the conduction loss, and improve the voltage conversion efficiency of the circuit.
  • step S200 further includes:
  • the control module 400 controls the first switch transistor Q1 and the fourth switch transistor Q4 to be turned on during the positive half cycle of the alternating current power supply AC and turned off during the negative half cycle of the alternating current power supply AC, and controls the second switch transistor Q2 and the third switch transistor Q3 to be on.
  • the positive half cycle of the alternating current source AC is turned off and the negative half cycle of the alternating current source AC is turned on.
  • the alternating current flows through the reactor L1, the first switch tube Q1, the first capacitor C1, the second capacitor C2 and the fourth switch tube Q4 in turn to form a loop to supply the first capacitor C1.
  • the second capacitor C2 is charged; in the negative half cycle of the AC power supply AC, the AC current flows through the third switch tube Q3, the first capacitor C1, the second capacitor C2, the second switch tube Q2 and the reactor L1 in turn to form a loop, The first capacitor C1 and the second capacitor C2 are charged; the charging of the capacitor through the anti-parallel diode of the switch tube is avoided, the conduction loss is reduced, and the voltage conversion efficiency is improved.
  • the circuit board of the embodiment of the third aspect of the present invention includes the totem-pole PFC circuit of the embodiment of the first aspect of the present invention.
  • the circuit board of this embodiment carries the totem-pole PFC circuit according to the first aspect of the present invention, and its function and working principle are based on the above-mentioned totem-pole PFC circuit. Therefore, the circuit board of this embodiment has the same characteristics as the above-mentioned totem-pole PFC circuit. The effect, in order to save space, will not be repeated here.
  • the air conditioner according to the embodiment of the fourth aspect of the present invention includes the circuit board according to the embodiment of the third aspect of the present invention. or,
  • the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform operations according to the present invention
  • the air conditioner of this embodiment includes the circuit board of the third aspect of the present invention, and its function and working principle are based on the above circuit board. Therefore, the air conditioner of this embodiment has the same effect as the above circuit board. In order to save space, The description will not be repeated here.
  • a computer-readable storage medium is characterized in that the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the embodiment according to the second aspect of the present invention.
  • the totem pole PFC circuit control method is characterized in that the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the embodiment according to the second aspect of the present invention.
  • the computer storage medium of this embodiment executes the totem-pole PFC circuit control method of the second aspect of the present invention. Therefore, the computer storage medium of this embodiment has the same function as the totem-pole PFC circuit control method described above. To save space, here The description will not be repeated.
  • Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or may Any other medium used to store desired information and which can be accessed by a computer.
  • communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and can include any information delivery media, as is well known to those of ordinary skill in the art .

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Abstract

一种图腾柱PFC电路、控制方法、线路板及空调器，图腾柱PFC电路包括电桥电路（100）、母线电容模块（200）、开关模块（300）和控制模块（400），开关模块（300）打开时，运行于图腾柱PFC模式，开关模块（300）闭合时，运行于图腾柱倍压PFC模式，控制模块（400）控制开关模块（300）的开合，使得图腾柱PFC电路能够在不同模式之间切换。

Description

图腾柱PFC电路、控制方法、线路板及空调器
相关申请的交叉引用
本申请要求于2020年7月22日提交的申请号为202010711000.8、名称为“图腾柱PFC电路、控制方法、线路板及空调器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及空调器技术领域，特别涉及一种图腾柱PFC电路、控制方法、线路板及空调器。
背景技术
现有的图腾柱PFC电路和倍压电路都是很常用的电流拓扑结构。其中图腾柱PFC拓扑可以将整流的电压进行升压，倍压电路能够将整流电路输出的电压进行翻倍，但不能升压，两种电路拓扑都有各自的优点。若是简单将两种电路结合，又会导致对电容充电的电流流经开关管的反并联二极管，二极管的管压降大，导致导通损耗大，电压转换效率低。
发明内容
本发明的目的在于至少在一定程度上解决现有技术中存在的技术问题之一，提供一种图腾柱PFC电路、控制方法、线路板、空调器及计算机存储介质，能够降低PFC电路的导通损耗，提高电压转换效率。
根据本发明第一方面实施例的图腾柱PFC电路，包括：
电桥电路，所述电桥电路包括相互并联的第一桥臂和第二桥臂，所述第一桥臂包括相互串联的第一开关管和第二开关管，所述第二桥臂包括相互串联的第三开关管和第四开关管，所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管均反并联有二极管；
母线电容模块，所述母线电容模块包括第一电容和第二电容，所述第一电容和所述第二电容串联后并联在所述电桥电路的输出端；
开关模块，所述开关模块的一端连接至所述第三开关管和所述第四开关管的连接点，所述开关模块的另一端连接至所述第一电容和所述第二电容的连接点；
控制模块，分别连接所述第一开关管、所述第二开关管、所述第三开关管、所述第四开关管和所述开关模块，用于控制所述开关模块的开合，且用于在所述开关模块闭合情况下控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管的导通截止，以在交流电源的正半周期通过所述第一开关管向所述第一电容充电并在交流电源的负半周期通过所述第二开关管向所述第二电容充电。
根据本发明实施例的图腾柱PFC电路，至少具有如下有益效果：开关模块打开时，图 腾柱PFC电路运行于图腾柱PFC模式，开关模块闭合时，图腾柱PFC电路运行于图腾柱倍压PFC模式，控制模块控制开关模块的开合，使得图腾柱PFC电路能够在图腾柱PFC模式和图腾柱倍压PFC模式之间切换；运行于图腾柱倍压PFC模式时，控制模块通过控制所第一开关管、第二开关管、第三开关管和第四开关管的导通截止，使得在交流电源的正半周期通过第一开关管向第一电容充电并在交流电源的负半周期通过第二开关管向第二电容充电，避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
根据本发明的一些实施例，还包括第一母线二极管和第二母线二极管，所述第一母线二极管的正极连接至所述第一桥臂的一端以及所述第二桥臂的一端，所述第一母线二极管的负极连接至所述母线电容模块的一端；所述第二母线二极管的正极连接至所述母线电容模块的另一端，所述第二母线二极管的负极连接至所述第一桥臂的另一端以及所述第二桥臂的另一端。通过设置第一母线二极管和第二母线二极管，能够避免母线电容模块的中存储的电能反向释放。
根据本发明的一些实施例，所述控制所述开关模块的开合，包括：
在所述需求电压小于交流电源的峰值电压的两倍的情况下，控制所述开关模块断开；
在所述需求电压大于或者等于交流电源的峰值电压的两倍的情况下，控制所述开关模块闭合。
在本实施例中，若需求电压小于交流电源的峰值电压的两倍，控制开关模块断开，使得图腾柱PFC电路运行于图腾柱PFC模式；若需求电压大于或者等于交流电源的峰值电压的两倍，控制开关模块闭合，使得图腾柱PFC电路运行于图腾柱倍压PFC模式，能够根据不同需求的电压等级，控制开关模块的状态，来选择合适的运行模式。
根据本发明的一些实施例，还包括用于检测交流电源输入的交流电流值的电流检测模块，所述电流检测模块串联在所述电桥电路的输入端，所述电流检测模块的输出端连接所述控制模块。电流检测模块将检测到的交流电流值从输出端传输给控制模块，以便控制模块根据交流电流值对相应的开关管进行控制。
根据本发明的一些实施例，所述的控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管的导通截止，以在交流电源的正半周期通过所述第一开关管向所述第一电容充电并在交流电源的负半周期通过所述第二开关管向所述第二电容充电，包括：
在交流电源的正半周期，控制所述第二开关管、所述第三开关管和所述第四开关管截止，且在检测到交流电流值大于零的情况下控制所述第一开关管导通；
在交流电源的负半周期，控制所述第一开关管、所述第三开关管和所述第四开关管截止，且在检测到交流电流值小于零的情况下控制所述第二开关管导通。
在本实施例中，图腾柱PFC电路运行于图腾柱倍压PFC模式时，若此时第一开关管、 第二开关管、第三开关管和第四开关管均没有驱动信号，电流是通过开关管的反并联二极管为母线电容模块充电的，此时二极管的管压降大，会导致损耗大，因此在交流电源的正半周期，检测到交流电流值大于零时控制第一开关管导通，使充电电流通过第一开关管向第一电容充电，在交流电源的负半周期，检测到交流电流值小于零时控制第二开关管导通，使充电电流通过第二开关管向第二电容充电，避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
根据本发明的一些实施例，所述控制模块还用于在所述开关模块断开情况下，控制所述第一开关管和所述第四开关管在交流电源的正半周期导通且在交流电源的负半周期截止，以及控制所述第二开关管和所述第三开关管在交流电源的正半周期截止且在交流电源的负半周期导通。同理，在开关模块断开时，图腾柱PFC电路运行于图腾柱PFC模式，若此时第一开关管、第二开关管、第三开关管和第四开关管均没有驱动信号，电流是通过开关管的反并联二极管为母线电容模块充电的，此时二极管的管压降大，会导致损耗大，因此，在交流电源的正半周期，控制第一开关管和第四开关管导通，交流电源通过第一开关管和第四开关管向第一电容和第二电容充电，在交流电源的负半周期，控制第二开关管和第三开关管导通，交流电源通过第二开关管和第三开关管向第一电容和第二电容充电，避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
根据本发明的一些实施例，还包括直流电压检测模块，所述直流电压检测模块并联在所述母线电容模块的后端，所述直流电压检测模块的输出端连接所述控制模块。直流电压检测模块将检测到的直流母线电压值从输出端传输给控制模块，以便控制模块根据直流母线电压值进行控制调整。
根据本发明的一些实施例，还包括交流电压检测模块，所述交流电压检测模块并联在交流电源和所述电桥电路之间，所述交流电压检测模块的输出端连接所述控制模块。交流电压检测模块将检测到的交流电压值从输出端传输给控制模块，以便控制模块根据交流电压值进行控制调整。
根据本发明的一些实施例，所述开关模块包括第一二极管、第二二极管、第三二极管、第四二极管和第五开关管，所述第一二极管和所述第二二极管串联形成二极管第一支路，所述第三二极管和所述第四二极管相互串联形成二极管第二支路，所述第五开关管、所述二极管第一支路和所述二极管第二支路相互并联，所述第一二极管和所述第二二极管的连接点引出作为所述开关模块的一端，所述第三二极管和所述第四二极管的连接点引出作为所述开关模块的另一端。本实施例给出了开关模块的一种具体电路结构，开关模块的闭合状态对应于第五开关管导通，开关模块的断开对应于第五开关管截止。
根据本发明的一些实施例，所述开关模块包括反向并联的第六开关管和第七开关管。本实施例给出了开关模块的另一种具体电路结构，开关模块的闭合状态对应于第六开关管和第七开关管同时导通或者在交流电源的正半周期第六开关管导通，在交流电源的负半周 期第七开关管导通；开关模块的断开对应于第六开关管和第七开关管同时截止。
根据本发明的一些实施例，所述开关模块包括反向串联的第八开关管和第九开关管，所述第八开关管和所述第九开关管均反并联有二极管。本实施例给出了开关模块的又一种具体电路结构，开关模块的闭合对应于第八开关管和第九开关管同时导通或者在交流电源的正半周期第八开关管导通，在交流电源的负半周期第九开关管导通；开关模块的断开对应于第八开关管和第九开关管同时截止。
根据本发明的一些实施例，所述开关模块为继电器或者机械开关器件。开关模块除了可以采用上述实施例提供的三种双向可控的高频开关，还可以采用本实施例给出的另外两种实施例方式。
根据本发明第二方面实施例的图腾柱PFC电路控制方法，所述图腾柱PFC电路包括：
电桥电路，所述电桥电路包括相互并联的第一桥臂和第二桥臂，所述第一桥臂包括相互串联的第一开关管和第二开关管，所述第二桥臂包括相互串联的第三开关管和第四开关管，所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管均反并联有二极管；
母线电容模块，所述母线电容模块包括第一电容和第二电容，所述第一电容和所述第二电容串联后并联在所述电桥电路的输出端；
开关模块，所述开关模块的一端连接至所述第三开关管和所述第四开关管的连接点，所述开关模块的另一端连接至所述第一电容和所述第二电容的连接点；
控制模块，连接所述第一开关管、所述第二开关管、所述第三开关管、所述第四开关管和所述开关模块；
所述方法包括：
所述控制模块控制所述开关模块的开合；
所述控制模块在所述开关模块闭合情况下控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管的导通截止，以在交流电源的正半周期通过所述第一开关管向所述第一电容充电并在交流电源的负半周期通过所述第二开关管向所述第二电容充电。
根据本发明实施例的图腾柱PFC电路控制方法，至少具有如下有益效果：开关模块打开时，图腾柱PFC电路运行于图腾柱PFC模式，开关模块闭合时，图腾柱PFC电路运行于图腾柱倍压PFC模式，控制模块控制开关模块的开合，使得图腾柱PFC电路能够在图腾柱PFC模式和图腾柱倍压PFC模式之间切换；运行于图腾柱倍压PFC模式时，控制模块通过控制所第一开关管、第二开关管、第三开关管和第四开关管的导通截止，使得在交流电源的正半周期通过第一开关管向第一电容充电并在交流电源的负半周期通过第二开关管向第二电容充电，避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
根据本发明的一些实施例，所述控制所述开关模块的开合，包括：
在所述需求电压小于交流电源的峰值电压的两倍的情况下，所述控制模块控制所述开关模块断开；
在所述需求电压大于或者等于交流电源的峰值电压的两倍的情况下，所述控制模块控制所述开关模块闭合。
在本实施例中，若需求电压小于交流电源的峰值电压的两倍，控制开关模块断开，使得图腾柱PFC电路运行于图腾柱PFC模式；若需求电压大于或者等于交流电源的峰值电压的两倍，控制开关模块闭合，使得图腾柱PFC电路运行于图腾柱倍压PFC模式，能够根据不同需求的电压等级，控制开关模块的状态，来选择合适的运行模式。
根据本发明的一些实施例，所述图腾柱PFC电路还包括用于检测交流电源输入的交流电流值的电流检测模块，所述电流检测模块串联在所述电桥电路的输入端，所述电流检测模块的输出端连接所述控制模块；
所述的控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管的导通截止，以在交流电源的正半周期通过所述第一开关管向所述第一电容充电并在交流电源的负半周期通过所述第二开关管向所述第二电容充电，包括：
在交流电源的正半周期，控制所述第二开关管、所述第三开关管和所述第四开关管截止，且在检测到交流电流值大于零的情况下控制所述第一开关管导通；
在交流电源的负半周期，控制所述第一开关管、所述第三开关管和所述第四开关管截止，且在检测到交流电流值小于零的情况下控制所述第二开关管导通。
在本实施例中，图腾柱PFC电路运行于图腾柱倍压PFC模式时，若此时第一开关管、第二开关管、第三开关管和第四开关管均没有驱动信号，电流是通过开关管的反并联二极管为母线电容模块充电的，此时二极管的管压降大，会导致损耗大，因此在交流电源的正半周期，检测到交流电流值大于零时控制第一开关管导通，使充电电流通过第一开关管向第一电容充电，在交流电源的负半周期，检测到交流电流值小于零时控制第二开关管导通，使充电电流通过第二开关管向第二电容充电，避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
根据本发明的一些实施例，还包括在所述开关模块断开情况下，所述控制模块控制所述第一开关管和所述第四开关管在交流电源的正半周期导通且在交流电源的负半周期截止，以及控制所述第二开关管和所述第三开关管在交流电源的正半周期截止且在交流电源的负半周期导通。同理，在开关模块断开时，图腾柱PFC电路运行于图腾柱PFC模式，若此时第一开关管、第二开关管、第三开关管和第四开关管均没有驱动信号，电流是通过开关管的反并联二极管为母线电容模块充电的，此时二极管的管压降大，会导致损耗大，因此，在交流电源的正半周期，控制第一开关管和第四开关管导通，交流电源通过第一开关管和第四开关管向第一电容和第二电容充电，在交流电源的负半周期，控制第二开关管 和第三开关管导通，交流电源通过第二开关管和第三开关管向第一电容和第二电容充电，避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
根据本发明第三方面实施例的线路板，包括根据本发明第一方面实施例所述的图腾柱PFC电路。
根据本发明实施例的线路板，至少具有如下有益效果：开关模块打开时，图腾柱PFC电路运行于图腾柱PFC模式，开关模块闭合时，图腾柱PFC电路运行于图腾柱倍压PFC模式，控制模块根据需求电压与交流电源的峰值电压来控制开关模块的开合，使得图腾柱PFC电路能够在图腾柱PFC模式和图腾柱倍压PFC模式之间切换；运行于图腾柱倍压PFC模式时，控制模块通过控制所第一开关管、第二开关管、第三开关管和第四开关管的导通截止，使得交流电源在正半周期通过第一开关管向第一电容充电并在负半周期通过第二开关管向第二电容充电，避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
根据本发明第四方面实施例的空调器，包括根据本发明第三方面实施例所述的线路板；或者，
包括至少一个处理器和用于与所述至少一个处理器通信连接的存储器；所述存储器存储有能够被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行根据本发明第二方面实施例所述的图腾柱PFC电路控制方法。
根据本发明实施例的空调器，至少具有如下有益效果：开关模块打开时，图腾柱PFC电路运行于图腾柱PFC模式，开关模块闭合时，图腾柱PFC电路运行于图腾柱倍压PFC模式，控制模块控制开关模块的开合，使得图腾柱PFC电路能够在图腾柱PFC模式和图腾柱倍压PFC模式之间切换；运行于图腾柱倍压PFC模式时，控制模块通过控制所第一开关管、第二开关管、第三开关管和第四开关管的导通截止，使得在交流电源的正半周期通过第一开关管向第一电容充电并在交流电源的负半周期通过第二开关管向第二电容充电，避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
根据本发明第五方面实施例的一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使计算机执行根据本发明第二方面实施例所述的图腾柱PFC电路控制方法。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
下面结合附图和实施例对本发明进一步地说明；
图1为本发明实施例提供的图腾柱PFC电路的电路原理图；
图2为本发明实施例提供的另一图腾柱PFC电路的电路原理图；
图3为本发明实施例提供的图腾柱PFC电路控制方法的部分流程图；
图4为本发明实施例提供的图腾柱PFC电路的工作于图腾柱PFC模式的状态切换图；
图5为本发明实施例提供的图腾柱PFC电路的工作于图腾柱倍压PFC模式的状态切换图；
图6为本发明实施例提供的图腾柱PFC电路的开关模块的电路原理图；
图7为本发明实施例提供的图腾柱PFC电路的开关模块的另一电路原理图；
图8为本发明实施例提供的图腾柱PFC电路的开关模块的又一电路原理图；
图9为本发明实施例提供的图腾柱PFC电路控制方法的流程图。
具体实施方式
本部分将详细描述本发明的具体实施例，本发明之较佳实施例在附图中示出，附图的作用在于用图形补充说明书文字部分的描述，使人能够直观地、形象地理解本发明的每个技术特征和整体技术方案，但其不能理解为对本发明保护范围的限制。
在本发明的描述中，如果有描述到第一、第二只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中，除非另有明确的限定，设置、安装、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。
本发明实施例提供一种图腾柱PFC电路、控制方法、线路板、空调器及计算机存储介质，能够降低图腾柱PFC电路的导通损耗，提高电压转换效率。
下面结合附图，对本发明实施例作进一步阐述。
如图1所示，图1是本发明第一方面实施例提供的图腾柱PFC电路的结构示意图，图腾柱PFC电路包括电桥电路100、电抗器L1、母线电容模块200、开关模块300和控制模块400。
电桥电路100包括相互并联的第一桥臂和第二桥臂，第一桥臂包括相互串联的第一开关管Q1和第二开关管Q2，第二桥臂包括相互串联的第三开关管Q3和第四开关管Q4，第一开关管Q1、第二开关管Q2、第三开关管Q3和第四开关管Q4组成了一个桥式电路，其中，第一开关管反并联有二极管D1，第二开关管反并联有二极管D2，第三开关管反并联有二极管D3，第四开关管反并联有二极管D4；
电抗器L1的一端连接交流电源AC的一端，电抗器L1的另一端连接至第一开关管Q1和第二开关管Q2的连接点，交流电源AC的另一端连接至第三开关管Q3和第四开关管Q4的连接点；
母线电容模块200包括第一电容C1和第二电容C2，第一电容C1和第二电容C2串联后并联在电桥电路100的输出端；
开关模块300的一端连接至第三开关管Q3和第四开关管Q4的连接点，开关模块300的另一端连接至第一电容C1和第二电容C2的连接点；
控制模块400，分别连接第一开关管Q1第二开关管Q2、第三开关管Q3、第四开关管Q4和开关模块300，用于控制开关模块300的开合，且用于在开关模块300闭合情况下控制第一开关Q1管、第二开关管Q2、第三开关管Q3和第四开关管Q4的导通截止，以使在交流电源AC的正半周期通过第一开关管Q1向第一电容C1充电并在在交流电源AC的负半周期通过第二开关管Q2向第二电容C2充电。
除了图1所示的电路拓扑，本发明的另一个实施例还提供另一种图腾柱PFC电路拓扑，参照图2所示，本实施例的图腾柱PFC电路还包括第一母线二极管D10和第二母线二极管D20，第一母线二极管D10的正极连接至第一桥臂的一端以及第二桥臂的一端，第一母线二极管D10的负极连接至母线电容模块20的一端；第二母线二极管D20的正极连接至母线电容模块20的另一端，第二母线二极管D20的负极连接至第一桥臂的另一端以及第二桥臂的另一端。通过设置第一母线二极管D10和第二母线二极管D20，能够避免母线电容模块200的中存储的电能反向释放。
开关模块300打开时，图腾柱PFC电路运行于图腾柱PFC模式，开关模块300闭合时，图腾柱PFC电路运行于图腾柱倍压PFC模式，控制模块400根据需求电压与交流电源AC的峰值电压来控制开关模块300的开合，使得图腾柱PFC电路能够在图腾柱PFC模式和图腾柱倍压PFC模式之间切换。
具体地，参照图3，在需求电压小于交流电源AC的峰值电压的两倍的情况下，控制模块400控制开关模块300断开，使图腾柱PFC电路运行于图腾柱PFC模式，即控制模块400控制第一开关管Q1和第四开关管Q4在交流电源AC的正半周期导通且在交流电源AC的负半周期截止，以及控制第二开关管Q2和第三开关管Q3在交流电源AC的正半周期截止且在交流电源AC的负半周期导通，如图4所示。因此，在交流电源AC的正半周期，交流电流依次流经电抗器L1、第一开关管Q1、第一电容C1、第二电容C2和第四开关管Q4，形成回路，给第一电容C1和第二电容C2充电；在交流电源AC的负半周期，交流电流依次流经第三开关管Q3、第一电容C1、第二电容C2、第二开关管Q2和电抗器L1，形成回路，给第一电容C1和第二电容C2充电；避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
参照图3，在需求电压大于或者等于交流电源AC的峰值电压的两倍的情况下，控制模块400控制开关模块300闭合，使图腾柱PFC电路运行于图腾柱倍压PFC模式；若此时第一开关管Q1、第二开关管Q2、第三开关管Q3和第四开关管Q4均没有驱动信号，控制逻辑和传统的倍压整流电路一样，电流是通过开关管的反并联二极管为母线电容模块200充电的，二极管的管压降大，会导致损耗大。因此运行于图腾柱倍压PFC模式时，控制模块400通过控制第一开关管Q1、第二开关管Q2、第三开关管Q3和第四开关管Q4 的导通截止，使得交流电源AC在正半周期通过第一开关管Q1向第一电容C1充电并在负半周期通过第二开关管Q2向第二电容C2充电，避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
具体地，参照图5，图腾柱PFC电路运行于图腾柱倍压PFC模式时，在交流电源AC的正半周期，控制第二开关管Q2、第三开关管Q3和第四开关管Q4截止，且在检测到交流电流值Is大于零的情况下控制第一开关管Q1导通，当检测到交流电流值Is为零时，控制第一开关管Q1截止；
在交流电源AC的负半周期，控制第一开关管Q1、第三开关管Q3和第四开关管Q4截止，且在检测到交流电流值小于零的情况下控制第二开关管Q2导通，当检测到交流电流值Is为零时，控制第二开关管Q2截止。
本发明实施例提供的图腾柱PFC电路，可以根据不同的需求电压，控制开关模块300的状态，从而选择运行于图腾柱PFC模式还是图腾柱倍压PFC模式，在运行于图腾柱倍压PFC模式时，通过控制第一开关管Q1、第二开关管Q2、第三开关管Q3和第四开关管Q4的导通截止，使得交流电源AC在正半周期通过第一开关管Q1向第一电容C1充电并在负半周期通过第二开关管Q2向第二电容C2充电，实现同步整流控制，降低导通损耗，提高电路的电压转换效率。
参照图1和图2，在本发明的一些实施例中，图腾柱PFC电路还包括用于检测交流电源输入的交流电流值Is的电流检测模块500，电流检测模块500串联在交流电源AC和电桥电路100之间，电流检测模块500的输出端连接控制模块400。电流检测模块500可以由电流互感器和外加检测电路构成，电流互感器可以串联在交流电源AC的火线端或者零线端，电流检测模块500的具体电路可以参考现有技术，此处不再赘述。
参照图1和图2，在本发明的一些实施例中，图腾柱PFC电路还包括直流电压检测模块600，直流电压检测模块600并联在母线电容模块200的后端，直流电压检测模块600的输出端连接控制模块400。直流电压检测模块600可以采用基于电阻分压结构形式的简单电路组成，具体电路可参考现有技术，此处不再赘述。
参照图1和图2，在本发明的一些实施例中，图腾柱PFC电路还包括交流电压检测模块700，交流电压检测模块700并联在交流电源AC和电桥电路100之间，交流电压检测模块700的输出端连接控制模块400。交流电压检测模块700的具体电路同理可参考现有技术，此处不再赘述。
在一实施方式中，在本发明的图腾柱PFC电路中，开关模块300可以为继电器、机械开关器件或者双向可控的高频开关，其中，双向可控的高频开关可以是图6至图8所示的结构中的一种。
具体地，图6中展示的开关模块300包括第一二极管D-1、第二二极管D-2、第三二极管D-3、第四二极管D-4和第五开关管Q5，第一二极管D-1和第二二极管D-2串联形成 二极管第一支路，第三二极管D-3和第四二极管D-4相互串联形成二极管第二支路，第五开关管Q5、二极管第一支路和二极管第二支路相互并联，第一二极管D-1和第二二极管D-2的连接点引出作为开关模块300的一端，第三二极管D-3和第四二极管D-4的连接点引出作为开关模块300的另一端。其中，开关模块300的闭合状态对应于第五开关管Q5导通，开关模块300的断开对应于第五开关管Q5截止。
图7中展示的开关模块300包括反向并联的第六开关管Q6和第七开关管Q7。其中，开关模块300的闭合对应于第六开关管Q6和第七开关管Q7同时导通或者在交流电源AC的正半周期第六开关管Q6导通，在交流电源AC的负半周期第七开关管Q7导通；开关模块300的断开对应于第六开关管Q6和第七开关管Q7同时截止。
图8中展示的开关模块300包括反向串联的第八开关管Q8和第九开关管Q9，第八开关管Q8反并联有第八二极管D-8，第九开关管Q9反并联有第九二极管D-9。其中，开关模块300的闭合对应于第八开关管Q8和第九开关管Q9同时导通或者在交流电源AC的正半周期第八开关管Q8导通，在交流电源AC的负半周期第九开关管Q9导通；开关模块300的断开对应于第八开关管Q8和第九开关管Q9同时截止。
本发明的第二方面实施例提供一种图腾柱PFC电路控制方法，应用于图1和图2所示的图腾柱PFC电路，参照图9，控制方法包括以下步骤：
S100：控制模块400控制开关模块300的开合；
S200：控制模块400在开关模块300闭合情况下控制第一开关管Q1、第二开关管Q2、第三开关管Q3和第四开关管Q4的导通截止，以在交流电源AC的正半周期通过第一开关管Q1向第一电容C1充电并在交流电源AC的负半周期通过第二开关管Q2向第二电容C2充电。
其中，步骤S100具体包括：
在需求电压小于交流电源AC的峰值电压的两倍的情况下，控制模块400控制开关模块300断开，使图腾柱PFC电路运行于图腾柱PFC模式；在需求电压大于或者等于交流电源AC的峰值电压的两倍的情况下，控制模块400控制开关模块300闭合，使图腾柱PFC电路运行于图腾柱倍压PFC模式。
其中，参照图4，控制第一开关管Q1、第二开关管Q2、第三开关管Q3和第四开关管Q4的导通截止，以在交流电源AC的正半周期通过第一开关管Q1向第一电容C1充电并在交流电源AC的负半周期通过第二开关管Q2向第二电容C2充电，具体包括：
在交流电源AC的正半周期，控制第二开关管Q2、第三开关管Q3和第四开关管Q4截止，且在检测到交流电流值Is大于零的情况下控制第一开关管Q1导通，当检测到交流电流值Is为零时，控制第一开关管Q1截止；
在交流电源AC的负半周期，控制第一开关管Q1、第三开关管Q3和第四开关管Q4截止，且在检测到交流电流值小于零的情况下控制第二开关管Q2导通，当检测到交流电 流值Is为零时，控制第二开关管Q2截止。
在本实施例提供的图腾柱PFC电路控制方法中，可以根据不同的需求电压，控制开关模块300的状态，从而选择运行于图腾柱PFC模式还是图腾柱倍压PFC模式，在运行于图腾柱倍压PFC模式时，通过控制第一开关管Q1、第二开关管Q2、第三开关管Q3和第四开关管Q4的导通截止，使得交流电源AC在正半周期通过第一开关管Q1向第一电容C1充电并在负半周期通过第二开关管Q2向第二电容C2充电，实现同步整流控制，降低导通损耗，提高电路的电压转换效率。
另外，在本发明的一些实施例中，步骤S200还包括：
控制模块400控制第一开关管Q1和第四开关管Q4在交流电源AC的正半周期导通且在交流电源AC的负半周期截止，以及控制第二开关管Q2和第三开关管Q3在交流电源AC的正半周期截止且在交流电源AC的负半周期导通。
因此，在交流电源AC的正半周期，交流电流依次流经电抗器L1、第一开关管Q1、第一电容C1、第二电容C2和第四开关管Q4，形成回路，给第一电容C1和第二电容C2充电；在交流电源AC的负半周期，交流电流依次流经第三开关管Q3、第一电容C1、第二电容C2、第二开关管Q2和电抗器L1，形成回路，给第一电容C1和第二电容C2充电；避免了通过开关管的反并联二极管向电容充电，降低了导通损耗，提高电压转换效率。
本发明第三方面实施例的线路板，包括根据本发明第一方面实施例的图腾柱PFC电路。
本实施例的线路板承载有本发明第一方面实施例的图腾柱PFC电路，其作用和工作原理均基于上述图腾柱PFC电路，因此本实施例的线路板具有与上述图腾柱PFC电路相同的效果，为节省篇幅，在此不再重复说明。
根据本发明第四方面实施例的空调器，包括根据本发明第三方面实施例的线路板；或者，
包括至少一个处理器和用于与至少一个处理器通信连接的存储器；存储器存储有能够被至少一个处理器执行的指令，指令被至少一个处理器执行，以使至少一个处理器能够执行根据本发明第二方面实施例的图腾柱PFC电路控制方法。
本实施例的空调器包括有本发明第三方面实施例的线路板，其作用和工作原理均基于上述线路板，因此本实施例的空调器具有与上述线路板相同的效果，为节省篇幅，在此不再重复说明。
根据本发明第五方面实施例的一种计算机可读存储介质，其特征在于，计算机可读存储介质存储有计算机可执行指令，计算机可执行指令用于使计算机执行根据本发明第二方面实施例的图腾柱PFC电路控制方法。
本实施例的计算机存储介质执行本发明第二方面实施例的图腾柱PFC电路控制方法，因此本实施例的计算机存储介质具有与上述图腾柱PFC电路控制方法相同的作用，为节省 篇幅，在此不再重复说明。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统可以被实施为软件、固件、硬件及其适当的组合。某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
上面结合附图对本发明实施例作了详细说明，但是本发明不限于上述实施例，在所述技术领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。

Claims (19)

  1. 一种图腾柱PFC电路，包括：
    电桥电路，所述电桥电路包括相互并联的第一桥臂和第二桥臂，所述第一桥臂包括相互串联的第一开关管和第二开关管，所述第二桥臂包括相互串联的第三开关管和第四开关管，所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管均反并联有二极管；
    母线电容模块，所述母线电容模块包括第一电容和第二电容，所述第一电容和所述第二电容串联后并联在所述电桥电路的输出端；
    开关模块，所述开关模块的一端连接至所述第三开关管和所述第四开关管的连接点，所述开关模块的另一端连接至所述第一电容和所述第二电容的连接点；
    控制模块，分别连接所述第一开关管、所述第二开关管、所述第三开关管、所述第四开关管和所述开关模块，用于控制所述开关模块的开合，且用于在所述开关模块闭合情况下控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管的导通截止，以在交流电源的正半周期通过所述第一开关管向所述第一电容充电并在交流电源的负半周期通过所述第二开关管向所述第二电容充电。
  2. 根据权利要求1所述的图腾柱PFC电路，其中，还包括第一母线二极管和第二母线二极管，所述第一母线二极管的正极连接至所述第一桥臂的一端以及所述第二桥臂的一端，所述第一母线二极管的负极连接至所述母线电容模块的一端；所述第二母线二极管的正极连接至所述母线电容模块的另一端，所述第二母线二极管的负极连接至所述第一桥臂的另一端以及所述第二桥臂的另一端。
  3. 根据权利要求1或2所述的图腾柱PFC电路，其中，所述控制所述开关模块的开合，包括：
    在所述需求电压小于交流电源的峰值电压的两倍的情况下，控制所述开关模块断开；
    在所述需求电压大于或者等于交流电源的峰值电压的两倍的情况下，控制所述开关模块闭合。
  4. 根据权利要求1或2所述的图腾柱PFC电路，其中，还包括用于检测交流电源输入的交流电流值的电流检测模块，所述电流检测模块串联在所述电桥电路的输入端，所述电流检测模块的输出端连接所述控制模块。
  5. 根据权利要求4所述的图腾柱PFC电路，其中，所述的控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管的导通截止，以在交流电源的正半周期通过所述第一开关管向所述第一电容充电并在交流电源的负半周期通过所述第二开关管向所述第二电容充电，包括：
    在交流电源的正半周期，控制所述第二开关管、所述第三开关管和所述第四开关管截止，且在检测到交流电流值大于零的情况下控制所述第一开关管导通；
    在交流电源的负半周期，控制所述第一开关管、所述第三开关管和所述第四开关管截止，且在检测到交流电流值小于零的情况下控制所述第二开关管导通。
  6. 根据权利要求1或2所述的图腾柱PFC电路，其中，所述控制模块还用于在所述开关模块断开情况下，控制所述第一开关管和所述第四开关管在交流电源的正半周期导通且在交流电源的负半周期截止，以及控制所述第二开关管和所述第三开关管在交流电源的正半周期截止且在交流电源的负半周期导通。
  7. 根据权利要求1或2所述的图腾柱PFC电路，其中，还包括直流电压检测模块，所述直流电压检测模块并联在所述母线电容模块的后端，所述直流电压检测模块的输出端连接所述控制模块。
  8. 根据权利要求1或2所述的图腾柱PFC电路，其中，还包括交流电压检测模块，所述交流电压检测模块并联在所述电桥电路的输入端，所述交流电压检测模块的输出端连接所述控制模块。
  9. 根据权利要求1或2所述的图腾柱PFC电路，其中，所述开关模块包括第一二极管、第二二极管、第三二极管、第四二极管和第五开关管，所述第一二极管和所述第二二极管串联形成二极管第一支路，所述第三二极管和所述第四二极管相互串联形成二极管第二支路，所述第五开关管、所述二极管第一支路和所述二极管第二支路相互并联，所述第一二极管和所述第二二极管的连接点引出作为所述开关模块的一端，所述第三二极管和所述第四二极管的连接点引出作为所述开关模块的另一端。
  10. 根据权利要求1或2所述的图腾柱PFC电路，其中，所述开关模块包括反向并联的第六开关管和第七开关管。
  11. 根据权利要求1或2所述的图腾柱PFC电路，其中，所述开关模块包括反向串联的第八开关管和第九开关管，所述第八开关管和所述第九开关管均反并联有二极管。
  12. 根据权利要求1或2所述的图腾柱PFC电路，其中，所述开关模块为继电器或者机械开关器件。
  13. 一种图腾柱PFC电路控制方法，其中，所述图腾柱PFC电路包括：
    电桥电路，所述电桥电路包括相互并联的第一桥臂和第二桥臂，所述第一桥臂包括相互串联的第一开关管和第二开关管，所述第二桥臂包括相互串联的第三开关管和第四开关管，所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管均反并联有二极管；
    母线电容模块，所述母线电容模块包括第一电容和第二电容，所述第一电容和所述第二电容串联后并联在所述电桥电路的输出端；
    开关模块，所述开关模块的一端连接至所述第三开关管和所述第四开关管的连接点，所述开关模块的另一端连接至所述第一电容和所述第二电容的连接点；
    控制模块，分别连接所述第一开关管、所述第二开关管、所述第三开关管、所述第四开关管和所述开关模块；
    所述方法包括：
    所述控制模块控制所述开关模块的开合；
    所述控制模块在所述开关模块闭合情况下控制所述第一开关管、所述第二开关管、所 述第三开关管和所述第四开关管的导通截止，以在交流电源的正半周期通过所述第一开关管向所述第一电容充电并在交流电源的负半周期通过所述第二开关管向所述第二电容充电。
  14. 根据权利要求13所述的图腾柱PFC电路控制方法，其中，所述控制所述开关模块的开合，包括：
    在所述需求电压小于交流电源的峰值电压的两倍的情况下，所述控制模块控制所述开关模块断开；
    在所述需求电压大于或者等于交流电源的峰值电压的两倍的情况下，所述控制模块控制所述开关模块闭合。
  15. 根据权利要求13所述的图腾柱PFC电路控制方法，其中，所述图腾柱PFC电路还包括用于检测交流电源输入的交流电流值的电流检测模块，所述电流检测模块串联在所述电桥电路的输入端，所述电流检测模块的输出端连接所述控制模块；
    所述的控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管的导通截止，以在交流电源的正半周期通过所述第一开关管向所述第一电容充电并在交流电源负半周期通过所述第二开关管向所述第二电容充电，包括：
    在交流电源的正半周期，控制所述第二开关管、所述第三开关管和所述第四开关管截止，且在检测到交流电流值大于零的情况下控制所述第一开关管导通；
    在交流电源的负半周期，控制所述第一开关管、所述第三开关管和所述第四开关管截止，且在检测到交流电流值小于零的情况下控制所述第二开关管导通。
  16. 根据权利要求13所述的图腾柱PFC电路控制方法，其中，还包括在所述开关模块断开情况下，所述控制模块控制所述第一开关管和所述第四开关管在交流电源的正半周期导通且在交流电源的负半周期截止，以及控制所述第二开关管和所述第三开关管在交流电源的正半周期截止且在交流电源的负半周期导通。
  17. 一种线路板，包括有如权利要求1至12任一项所述的图腾柱PFC电路。
  18. 一种空调器，
    包括如权利要求17所述的线路板；
    或者，
    包括至少一个处理器和用于与所述至少一个处理器通信连接的存储器；所述存储器存储有能够被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行如权利要求13至16中任意一项所述的图腾柱PFC电路控制方法。
  19. 一种计算机可读存储介质，存储有计算机可执行指令，其中，所述计算机可执行指令用于使计算机执行如权利要求13至16任一项所述的图腾柱PFC电路控制方法。
PCT/CN2021/107106 2020-07-22 2021-07-19 图腾柱pfc电路、控制方法、线路板及空调器 Ceased WO2022017323A1 (zh)

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