CN113972827B - Totem pole PFC circuit, control method thereof, circuit board, air conditioner and storage medium - Google Patents
Totem pole PFC circuit, control method thereof, circuit board, air conditioner and storage medium Download PDFInfo
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- CN113972827B CN113972827B CN202010712464.0A CN202010712464A CN113972827B CN 113972827 B CN113972827 B CN 113972827B CN 202010712464 A CN202010712464 A CN 202010712464A CN 113972827 B CN113972827 B CN 113972827B
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- 238000004146 energy storage Methods 0.000 claims abstract description 133
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- 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
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/26—Power factor control [PFC]
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a totem pole PFC circuit and a control method thereof, a circuit board, an air conditioner and a storage medium. The totem pole PFC circuit sends pulse signals to the third switching device at positive half wave of an alternating voltage signal and the fourth switching device at negative half wave of the alternating voltage signal by arranging a controller, so that a first oscillating circuit and a second oscillating circuit are respectively formed, energy storage and energy release of an inductance device can be realized, the waveform of input current is controlled, the waveform of the input current changes along with the alternating voltage signal, and input current harmonic wave and power factor are improved; in addition, by arranging the fifth switching device, the first energy storage device and the second energy storage device can be charged and discharged respectively, so that the totem pole PFC circuit outputs the first voltage, and a totem pole voltage doubling scheme is realized.
Description
Technical Field
The invention relates to the field of PFC control, in particular to a totem pole PFC circuit, a control method thereof, a circuit board, an air conditioner and a storage medium.
Background
At present, power factor correction (Power Factor Correction, PFC) is needed on the input side of equipment connected to a power grid, and a bridge circuit of the conventional totem pole PFC circuit is generally realized by adopting a diode, however, due to the large voltage drop of the diode, the conduction loss of the totem pole PFC circuit is increased, and input current harmonic waves and power factors are affected.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the invention provides a totem pole PFC circuit, a control method thereof, a circuit board, an air conditioner and a storage medium, which can improve input current harmonic waves and power factors.
In a first aspect, an embodiment of the present invention provides a totem pole PFC circuit, including:
the bridge circuit comprises a first bridge arm and a second bridge arm which are mutually connected in parallel, wherein the first bridge arm comprises a first switching device and a second switching device which are mutually connected in series, the second bridge arm comprises a third switching device and a fourth switching device which are mutually connected in series, the public ends of the first switching device and the second switching device are connected with one end of an alternating current power supply through an inductance device, and the public ends of the third switching device and the fourth switching device are connected with the other end of the alternating current power supply;
The energy storage assembly comprises a first energy storage device and a second energy storage device which are mutually connected in series, and the energy storage assembly is connected with the second bridge arm in parallel;
a fifth switching device connected to the common terminal of the third switching device and the fourth switching device and the common terminal of the first energy storage device and the second energy storage device, respectively;
A controller connected to the first switching device, the second switching device, the third switching device, the fourth switching device, and the fifth switching device, respectively;
The controller sends pulse signals to the third switching device at positive half wave of an alternating voltage signal and to the fourth switching device at negative half wave of the alternating voltage signal, so that the inductance device, the first energy storage device and the fifth switching device form a first oscillation loop at positive half wave of the alternating voltage signal, and the inductance device, the fifth switching device and the second energy storage device form a second oscillation loop at negative half wave of the alternating voltage signal, so that the totem pole PFC circuit outputs a first voltage.
The totem pole PFC circuit provided by the embodiment of the invention has at least the following beneficial effects: the controller is arranged to send pulse signals to the third switching device at positive half wave of the alternating voltage signal and to the fourth switching device at negative half wave of the alternating voltage signal, so that a first oscillating circuit and a second oscillating circuit are respectively formed, energy storage and energy release of the inductance device can be realized, the waveform of input current is controlled, the waveform of the input current changes along with the alternating voltage signal, and input current harmonic wave and power factor are improved; in addition, by arranging the fifth switching device, the first energy storage device and the second energy storage device can be charged and discharged respectively, so that the totem pole PFC circuit outputs the first voltage, and a totem pole voltage doubling scheme is realized.
In some embodiments of the present invention,
The controller controls the first switching device and the second switching device to be alternately conducted, so that the inductance device, the first energy storage device and the second energy storage device form a third oscillation loop, and the totem pole PFC circuit outputs a second voltage.
The controller controls the first switching device and the second switching device to be alternately conducted to form a third oscillating loop, so that a totem pole boosting scheme can be realized, and the totem pole PFC circuit can output different voltage values; in addition, by controlling the first switching device, the second switching device, the third switching device and the fourth switching device respectively, the operation loss can be shared, so that the service life of the devices can be prolonged, and the working stability of the circuit can be improved.
In some embodiments of the present invention,
The controller sends pulse signals to the first switching device and the second switching device to control the first switching device and the second switching device to be alternately conducted;
In the positive half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the first switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the second switching device is gradually decreased between the voltage zero crossing point and the voltage peak value;
In the negative half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the first switching device gradually decreases between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the second switching device gradually increases between the voltage zero crossing point and the voltage peak value.
In the technical scheme, the waveform of the input current is more similar to the waveform of the alternating voltage signal by controlling the duty ratio of the pulse signal at the voltage zero crossing point and the voltage peak value of the alternating voltage signal, so that the improvement effect of the harmonic wave and the power factor of the input current is improved.
In some embodiments of the present invention,
The controller also sends a pulse signal to the fifth switching device to control the third switching device and the fifth switching device to be alternately conducted, and the fourth switching device and the fifth switching device to be alternately conducted.
In the above-mentioned technical scheme, the method comprises the steps of,
In some embodiments of the present invention,
In the positive half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the fifth switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the third switching device is gradually decreased between the voltage zero crossing point and the voltage peak value;
In the negative half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the fifth switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the fourth switching device is gradually decreased between the voltage zero crossing point and the voltage peak value.
In the technical scheme, the waveform of the input current is more similar to the waveform of the alternating voltage signal by controlling the duty ratio of the pulse signal at the voltage zero crossing point and the voltage peak value of the alternating voltage signal, so that the improvement effect of the harmonic wave and the power factor of the input current is improved.
In some embodiments of the invention, the fifth switching device comprises one of:
The device comprises a fifth MOS tube, a sixth MOS tube, a first diode and a second diode, wherein the sources of the fifth MOS tube and the sixth MOS tube are connected with each other, the negative electrode of the first diode is connected with the drain electrode of the fifth MOS tube, the drain electrode of the fifth MOS tube is connected with the common end of the third switching device and the fourth switching device, the negative electrode of the second diode is connected with the drain electrode of the sixth MOS tube, the drain electrode of the sixth MOS tube is connected with the common end of the first energy storage device and the second energy storage device, the positive electrodes of the first diode and the second diode are connected with the source electrode of the fifth MOS tube, and the grid electrodes of the fifth MOS tube and the sixth MOS tube are respectively connected with the controller;
the first IGBT tube and the second IGBT tube, the emitter of the first IGBT tube is connected with the collector of the second IGBT tube, the collector of the first IGBT tube is connected with the emitter of the second IGBT tube, the emitter of the first IGBT tube is connected with the common end of the third switch device and the fourth switch device, the collector of the first IGBT tube is connected with the common end of the first energy storage device and the second energy storage device, and the grid electrodes of the first IGBT tube and the second IGBT tube are respectively connected with the controller;
The device comprises a third IGBT tube, a third diode, a fourth diode, a fifth diode and a sixth diode, wherein the cathodes of the third diode and the fifth diode are connected with the collector of the third IGBT tube, the anodes of the fourth diode and the sixth diode are connected with the emitter of the third IGBT tube, the anodes of the third diode are respectively connected with the cathodes of the fourth diode and the common end of the third switching device and the fourth switching device, the anodes of the fifth diode are respectively connected with the cathodes of the sixth diode and the common end of the first energy storage device and the second energy storage device, and the grid of the third IGBT tube is connected with the controller.
In the above technical solution, the three structures of the fifth switching device can realize controllable bidirectional conduction, so that loops in different directions can be formed in the positive half wave and the negative half wave of the alternating voltage signal.
In some embodiments of the present invention,
The totem pole PFC circuit further comprises a seventh diode and an eighth diode, wherein the positive electrode of the seventh diode is connected with the third switching device, the negative electrode of the seventh diode is connected with the first energy storage device, the negative electrode of the eighth diode is connected with the fourth switching device, and the positive electrode of the eighth diode is connected with the second energy storage device.
In the technical scheme, the control effect of unidirectional conduction can be achieved by arranging the seventh diode and the eighth diode, so that current backflow of the first energy storage device and the second energy storage device during discharging is avoided, and the working stability of the circuit is improved.
In some embodiments of the invention, the fifth switching device is a relay.
Because the seventh diode and the eighth diode exist, current backflow of the first energy storage device and the second energy storage device during discharging can be avoided, and therefore the fifth switching device can be kept on during control, and control of the fifth switching device is facilitated to be simplified.
In a second aspect, an embodiment of the present invention further provides a totem pole PFC circuit control method, which is applied to a totem pole PFC circuit, where the totem pole PFC circuit includes:
the bridge circuit comprises a first bridge arm and a second bridge arm which are mutually connected in parallel, wherein the first bridge arm comprises a first switching device and a second switching device which are mutually connected in series, the second bridge arm comprises a third switching device and a fourth switching device which are mutually connected in series, the public ends of the first switching device and the second switching device are connected with one end of an alternating current power supply through an inductance device, and the public ends of the third switching device and the fourth switching device are connected with the other end of the alternating current power supply;
The energy storage assembly comprises a first energy storage device and a second energy storage device which are mutually connected in series, and the energy storage assembly is connected with the second bridge arm in parallel;
a fifth switching device connected to the common terminal of the third switching device and the fourth switching device and the common terminal of the first energy storage device and the second energy storage device, respectively;
A controller connected to the first switching device, the second switching device, the third switching device, the fourth switching device, and the fifth switching device, respectively;
the totem pole PFC circuit control method comprises the following steps:
and transmitting pulse signals to the third switching device at the positive half wave of the alternating voltage signal and the fourth switching device at the negative half wave of the alternating voltage signal, so that the inductance device, the first energy storage device and the fifth switching device form a first oscillation loop at the positive half wave of the alternating voltage signal, and the inductance device, the fifth switching device and the second energy storage device form a second oscillation loop at the negative half wave of the alternating voltage signal, so that the totem pole PFC circuit outputs a first voltage.
The totem pole PFC circuit control method provided by the embodiment of the invention has the following beneficial effects: by transmitting pulse signals to the third switching device at the positive half wave of the alternating voltage signal and transmitting pulse signals to the fourth switching device at the negative half wave of the alternating voltage signal, a first oscillating circuit and a second oscillating circuit are respectively formed, energy storage and energy release of the inductance device can be realized, the waveform of input current is controlled, the waveform of the input current is changed along with the alternating voltage signal, and the input current harmonic wave and the power factor are improved. In addition, by arranging the fifth switching device, the first energy storage device and the second energy storage device can be charged and discharged respectively, so that the totem pole PFC circuit outputs the first voltage, and a totem pole voltage doubling scheme is realized.
In some embodiments of the invention, the method further comprises:
And controlling the first switching device and the second switching device to be alternately conducted, so that the inductance device, the first energy storage device and the second energy storage device form a third oscillation loop, and the totem pole PFC circuit outputs a second voltage.
The first switching device and the second switching device are controlled to be alternately conducted to form a third oscillating loop, so that a totem pole boosting scheme can be realized, and the totem pole PFC circuit can output different voltage values; in addition, by controlling the first switching device, the second switching device, the third switching device and the fourth switching device respectively, the operation loss can be shared, so that the service life of the devices can be prolonged, and the working stability of the circuit can be improved.
In some embodiments of the invention, said controlling said first switching device and said second switching device to be alternately turned on comprises:
In the positive half wave of the alternating voltage signal, the third switching device and the fifth switching device are controlled to be kept off, the fourth switching device is controlled to be kept on, and pulse signals are sent to the first switching device and the second switching device so that the first switching device and the second switching device are alternately turned on;
And in the negative half wave of the alternating voltage signal, the third switching device is controlled to be kept on, the fourth switching device and the fifth switching device are controlled to be kept off, and pulse signals are sent to the first switching device and the second switching device so that the first switching device and the second switching device are alternately turned on.
In the technical scheme, only the first switching device and the second switching device are controlled to perform frequent actions, and the third switching device, the fourth switching device and the fifth switching device do not need to perform frequent actions, so that the loss of the third switching device, the fourth switching device and the fifth switching device is reduced.
In some embodiments of the present invention,
In the positive half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the first switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the second switching device is gradually decreased between the voltage zero crossing point and the voltage peak value;
In the negative half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the first switching device gradually decreases between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the second switching device gradually increases between the voltage zero crossing point and the voltage peak value.
In the technical scheme, the waveform of the input current is more similar to the waveform of the alternating voltage signal by controlling the duty ratio of the pulse signal at the voltage zero crossing point and the voltage peak value of the alternating voltage signal, so that the improvement effect of the harmonic wave and the power factor of the input current is improved.
In some embodiments of the present invention, the transmitting the pulse signal to the third switching device at the positive half wave of the ac voltage signal and to the fourth switching device at the negative half wave of the ac voltage signal includes:
And transmitting a pulse signal to the third switching device at the positive half wave of the alternating voltage signal and transmitting a pulse signal to the fourth switching device at the negative half wave of the alternating voltage signal, wherein the pulse signal is transmitted to the fifth switching device to control the third switching device and the fifth switching device to be alternately conducted, and the fourth switching device and the fifth switching device to be alternately conducted.
By controlling the third switching device and the fifth switching device to be alternately conducted and the fourth switching device and the fifth switching device to be alternately conducted, when the first energy storage device or the second energy storage device discharges, the fifth switching device is in an off state, so that current flowing backward when the first energy storage device and the second energy storage device discharge can be avoided.
In some embodiments of the present invention, said sending a pulse signal to said fifth switching device controls said third switching device and said fifth switching device to be alternately turned on, said fourth switching device and said fifth switching device to be alternately turned on, comprising:
In the positive half wave of the alternating voltage signal, controlling the first switching device to be kept on, controlling the second switching device and the fourth switching device to be kept off, and sending pulse signals to the third switching device and the fifth switching device so as to enable the third switching device and the fifth switching device to be alternately turned on;
And in the negative half wave of the alternating voltage signal, controlling the second switching device to be kept on, controlling the first switching device and the third switching device to be kept off, and sending pulse signals to the fourth switching device and the fifth switching device so as to enable the fourth switching device and the fifth switching device to be alternately turned on.
In the technical scheme, only the third switching device, the fourth switching device and the fifth switching device are required to be controlled to perform frequent actions, and the first switching device and the second switching device do not need to perform frequent actions, so that the loss of the first switching device and the second switching device is reduced.
In some embodiments of the present invention,
In the positive half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the fifth switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the third switching device is gradually decreased between the voltage zero crossing point and the voltage peak value;
In the negative half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the fifth switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the fourth switching device is gradually decreased between the voltage zero crossing point and the voltage peak value.
In the technical scheme, the waveform of the input current is more similar to the waveform of the alternating voltage signal by controlling the duty ratio of the pulse signal at the voltage zero crossing point and the voltage peak value of the alternating voltage signal, so that the improvement effect of the harmonic wave and the power factor of the input current is improved.
In some embodiments of the present invention, the totem pole PFC circuit further includes a seventh diode and an eighth diode, where an anode of the seventh diode is connected to the third switching device, a cathode of the seventh diode is connected to the first energy storage device, a cathode of the eighth diode is connected to the fourth switching device, and an anode of the eighth diode is connected to the second energy storage device, and the transmitting pulse signals to the third switching device at a positive half wave of an ac voltage signal and to the fourth switching device at a negative half wave of the ac voltage signal includes:
and transmitting a pulse signal to the third switching device at the positive half wave of the alternating voltage signal and transmitting a pulse signal to the fourth switching device at the negative half wave of the alternating voltage signal, and controlling the fifth switching device to maintain on.
Because the seventh diode and the eighth diode exist, current backflow of the first energy storage device and the second energy storage device during discharging can be avoided, and therefore the fifth switching device can be kept on during control, and control of the fifth switching device is facilitated to be simplified.
In some embodiments of the present invention, the totem pole PFC circuit control method further includes:
Acquiring the load capacity of the totem pole PFC circuit;
And outputting the second voltage or the first voltage according to the load quantity.
In the technical scheme, the output voltage of the totem pole PFC circuit is controlled according to the load capacity, so that the working efficiency of the totem pole PFC circuit is improved.
In some embodiments of the present invention, the outputting the second voltage or the first voltage according to the load amount includes at least one of:
Outputting the second voltage when the load amount is less than twice the voltage peak value of the alternating voltage signal;
And outputting the first voltage when the load capacity is greater than or equal to twice the voltage peak value of the alternating voltage signal.
In the technical scheme, the double of the voltage peak value of the alternating voltage signal is used as a reference, so that the control refinement degree of the totem pole PFC circuit is improved.
In a third aspect, an embodiment of the present invention further provides a circuit board, including the totem pole PFC circuit according to the first aspect.
Therefore, the circuit board sends pulse signals to the third switching device at the positive half wave of the alternating voltage signal and sends pulse signals to the fourth switching device at the negative half wave of the alternating voltage signal by arranging the controller, so that a first oscillating circuit and a second oscillating circuit are respectively formed, energy storage and energy release of the inductance device can be realized, the waveform of input current is controlled, the waveform of the input current is changed along with the alternating voltage signal, and the harmonic wave and the power factor of the input current are improved; in addition, by arranging the fifth switching device, the first energy storage device and the second energy storage device can be charged and discharged respectively, so that the totem pole PFC circuit outputs the first voltage, and a totem pole voltage doubling scheme is realized.
In a fourth aspect, an embodiment of the present invention further provides an air conditioner, including the circuit board of the third aspect,
Or alternatively
Comprising at least one processor and a memory for communication connection with the at least one processor; the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the totem pole PFC circuit control method of the second aspect.
Therefore, the air conditioner sends pulse signals to the third switching device at the positive half wave of the alternating voltage signal and sends pulse signals to the fourth switching device at the negative half wave of the alternating voltage signal by arranging the controller, so that a first oscillating circuit and a second oscillating circuit are respectively formed, energy storage and energy release of the inductance device can be realized, the waveform of input current is controlled, the waveform of the input current is changed along with the alternating voltage signal, and the harmonic wave and the power factor of the input current are improved; in addition, by arranging the fifth switching device, the first energy storage device and the second energy storage device can be charged and discharged respectively, so that the totem pole PFC circuit outputs the first voltage, and a totem pole voltage doubling scheme is realized.
In a fifth aspect, an embodiment of the present invention further provides a computer readable storage medium, where computer executable instructions are stored, where the computer executable instructions are configured to cause a computer to execute the totem pole PFC circuit control method according to the second aspect.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.
Fig. 1 is a schematic circuit diagram of a totem pole PFC circuit according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a structure of a fifth switching device according to an embodiment of the present invention;
Fig. 3 is a schematic circuit diagram of another structure of a fifth switching device according to an embodiment of the present invention;
Fig. 4 is a schematic circuit diagram of another structure of a fifth switching device according to an embodiment of the present invention;
Fig. 5 is a control waveform diagram of a first switching device, a second switching device, a third switching device, a fourth switching device, and a fifth switching device when the totem pole PFC circuit according to the embodiment of the present invention is in a boost state;
Fig. 6 is a control waveform diagram of a first switching device, a second switching device, a third switching device, a fourth switching device, and a fifth switching device when the totem pole PFC circuit according to the embodiment of the present invention is in a voltage doubling state;
Fig. 7 is a schematic circuit diagram of another totem pole PFC circuit according to an embodiment of the present invention;
Fig. 8 is a flowchart of a totem pole PFC circuit control method according to an embodiment of the present invention;
FIG. 9 is a flowchart of a specific step of controlling the alternate conduction of the first switching device and the second switching device according to an embodiment of the present invention;
Fig. 10 is a flowchart of a specific step of sending a pulse signal to a fifth switching device to control the third switching device and the fifth switching device to be turned on alternately, and the fourth switching device and the fifth switching device to be turned on alternately, provided in an embodiment of the present invention;
Fig. 11 is a flowchart of a complementary step of a totem pole PFC circuit control method according to an embodiment of the present invention;
Fig. 12 is a flowchart of a supplementary step of outputting a second voltage or a first voltage according to a load amount provided by an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a circuit board according to an embodiment of the present invention;
Fig. 14 is a schematic structural view of an air conditioner according to an embodiment of the present invention;
fig. 15 is a schematic view of another structure of an air conditioner according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be understood that in the description of the embodiments of the present invention, plural (or multiple) means two or more, and that greater than, less than, exceeding, etc. are understood to not include the present number, and that greater than, less than, within, etc. are understood to include the present number. If any, the terms "first," "second," etc. are used for distinguishing between technical features only, and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Referring to fig. 1, an embodiment of the present invention provides a totem pole PFC circuit, including a bridge circuit, an energy storage component, and a controller, where the bridge circuit includes a first bridge arm and a second bridge arm connected in parallel, the first bridge arm includes a first switching device and a second switching device connected in series, the second bridge arm includes a third switching device and a fourth switching device connected in series, a common terminal of the first switching device and the second switching device is connected to one end of an AC power supply AC through an inductance device, and a common terminal of the third switching device and the fourth switching device is connected to the other end of the AC power supply AC; the energy storage component comprises a first energy storage device and a second energy storage device which are mutually connected in series, and the energy storage component is connected with the second bridge arm in parallel; in addition, the totem pole PFC circuit further comprises a fifth switching device K, wherein the fifth switching device K is respectively connected with a common end of the third switching device and the fourth switching device and a common end of the first energy storage device and the second energy storage device; the controller is respectively connected with the first switching device, the second switching device, the third switching device, the fourth switching device and the fifth switching device K.
In an embodiment, the first switching device includes a first MOS transistor Q1 and an antiparallel diode thereof, the second switching device includes a second MOS transistor Q2 and an antiparallel diode thereof, the third switching device includes a third MOS transistor Q3 and an antiparallel diode thereof, the fourth switching device includes a fourth MOS transistor Q4 and an antiparallel diode thereof, the first energy storage device includes a first capacitor C1, the second energy storage device includes a second capacitor C2, and the inductance device includes an inductance L.
The load of the totem pole PFC circuit is an inverter module, and of course, the load of the totem pole PFC circuit may be other devices, which is not limited in this embodiment.
Referring to fig. 2 to 4, in an embodiment, the fifth switching device K may have the following three structural forms:
The first type of the diode comprises a fifth MOS tube Q5, a sixth MOS tube Q6, a first diode D1 and a second diode D2, sources of the fifth MOS tube Q5 and the sixth MOS tube Q6 are connected with each other, a negative electrode of the first diode D1 is connected with a drain electrode of the fifth MOS tube Q5, a drain electrode of the fifth MOS tube Q5 is connected with a common end of the third switching device and the fourth switching device, a negative electrode of the second diode D2 is connected with a drain electrode of the sixth MOS tube Q6, a drain electrode of the sixth MOS tube Q6 is connected with a common end of the first energy storage device and the second energy storage device, anodes of the first diode D1 and the second diode D2 are connected with a source electrode of the fifth MOS tube Q5, and grid electrodes of the fifth MOS tube Q5 and the sixth MOS tube Q6 are respectively connected with a controller.
Specifically, the fifth switching device K is turned off, that is, the fifth MOS transistor Q5 and the sixth MOS transistor Q6 are both turned off, the fifth switching device K is turned on at a positive half-wave of the ac voltage signal, that is, the fifth MOS transistor Q5 is turned on at a positive half-wave of the ac voltage signal, the sixth MOS transistor Q6 is turned off at a positive half-wave of the ac voltage signal, the fifth switching device K is turned on at a negative half-wave of the ac voltage signal, that is, the fifth MOS transistor Q5 is turned off at a negative half-wave of the ac voltage signal, and the sixth MOS transistor Q6 is turned on at a negative half-wave of the ac voltage signal.
The second type includes first IGBT pipe Q7 and second IGBT pipe Q8, the collecting electrode of second IGBT pipe Q8 is connected to first IGBT pipe Q7's projecting pole, the collecting electrode of first IGBT pipe Q7 connects the projecting pole of second IGBT pipe Q8, the public end of third switching device and fourth switching device is connected to first IGBT pipe Q7's projecting pole, the public end of first energy storage device and second energy storage device is connected to first IGBT pipe Q7's collecting electrode, the controller is connected respectively to first IGBT pipe Q7 and second IGBT pipe Q8's grid.
Specifically, the fifth switching device K is turned off, that is, the first IGBT tube Q7 and the second IGBT tube Q8 are both turned off, the fifth switching device K is turned on at a positive half-wave of the ac voltage signal, that is, the first IGBT tube Q7 is turned on at a positive half-wave of the ac voltage signal, the second IGBT tube Q8 is turned off at a positive half-wave of the ac voltage signal, the fifth switching device K is turned on at a negative half-wave of the ac voltage signal, that is, the first IGBT tube Q7 is turned off at a negative half-wave of the ac voltage signal, and the second IGBT tube Q8 is turned on at a negative half-wave of the ac voltage signal.
The third type of the diode comprises a third IGBT (insulated gate bipolar transistor) tube Q9, a third diode D3, a fourth diode D4, a fifth diode D5 and a sixth diode, wherein the cathodes of the third diode D3 and the fifth diode D5 are connected with the collector electrode of the third IGBT tube Q9, the anodes of the fourth diode D4 and the sixth diode are connected with the emitter electrode of the third IGBT tube Q9, the anodes of the third diode D3 are respectively connected with the cathode electrode of the fourth diode D4 and the common end of the third switching device and the fourth switching device, the anodes of the fifth diode D5 are respectively connected with the cathode electrode of the sixth diode, the common end of the first energy storage device and the second energy storage device, and the grid electrode of the third IGBT tube Q9 is connected with a controller.
Specifically, the fifth switching device K is turned off, that is, the third IGBT tube Q9 is turned off, and the fifth switching device K is turned on, that is, the third IGBT tube Q9 is turned on.
Based on any one of the three structures, the fifth switching device K can realize controllable bidirectional conduction, so that loops in different directions can be formed in the positive half wave and the negative half wave of the alternating voltage signal conveniently.
Specifically, referring to fig. 5, when the fifth switching device K is turned off, the totem pole PFC circuit is in a boost state, and the control process of the first MOS transistor Q1, the second MOS transistor Q2, the third MOS transistor Q3, and the fourth MOS transistor Q4 is as follows:
In the positive half-wave of the alternating voltage signal, the third MOS transistor Q3 is controlled to be kept off, the fourth MOS transistor Q4 is controlled to be kept on, and pulse signals are sent to the first MOS transistor Q1 and the second MOS transistor Q2 so that the first MOS transistor Q1 and the second MOS transistor Q2 are alternately conducted. When the first MOS tube Q1 Is turned off and the second MOS tube Q2 Is turned on, a loop passing through the alternating current power supply AC, the inductor L, the second MOS tube Q2 and the fourth MOS tube Q4 Is formed, energy storage Is carried out on the inductor L, and the input current Is rises; when the first MOS transistor Q1 Is turned on and the second MOS transistor Q2 Is turned off, the current of the inductor L forms a loop through the first MOS transistor Q1, the first capacitor C1, the second capacitor C2 and the fourth MOS transistor Q4, that Is, the inductor L, the first capacitor C1 and the second capacitor C2 form a third oscillating loop, and the inductor L charges the first capacitor C1 and the second capacitor C2 at the same time, so that the input current Is decreases. In this way, the first MOS tube Q1 and the second MOS tube Q2 are alternately conducted, energy storage and energy release are carried out on the inductor L, and a boosting effect Is achieved, so that the waveform of the input current Is controlled, the waveform of the input current Is enabled to change along with the input voltage Us, and the harmonic wave and the power factor of the input current Is are improved.
In the negative half-wave of the alternating voltage signal, the third MOS transistor Q3 is controlled to be kept on, the fourth MOS transistor Q4 is controlled to be kept off, and pulse signals are sent to the first MOS transistor Q1 and the second MOS transistor Q2 so that the first MOS transistor Q1 and the second MOS transistor Q2 are alternately conducted. When the first MOS tube Q1 Is turned on and the second MOS tube Q2 Is turned off, a loop passing through the alternating current power supply AC, the inductor L, the first MOS tube Q1 and the third MOS tube Q3 Is formed, energy storage Is carried out on the inductor L, and the input current Is rises; when the first MOS transistor Q1 Is turned off and the second MOS transistor Q2 Is turned on, the current of the inductor L forms a loop through the third MOS transistor Q3, the first capacitor C1, the second capacitor C2 and the second MOS transistor Q2, that Is, the inductor L, the first capacitor C1 and the second capacitor C2 form a third oscillating loop, and the inductor L charges the first capacitor C1 and the second capacitor C2 at the same time, so that the input current Is decreases. In this way, the first MOS tube Q1 and the second MOS tube Q2 are alternately conducted, energy storage and energy release are carried out on the inductor L, and a boosting effect Is achieved, namely, the second voltage Is output, so that the waveform of the input current Is controlled, the waveform of the input current Is enabled to change along with the input voltage Us, and the harmonic wave and the power factor of the input current Is are improved.
Wherein, in the positive half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the first switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the second switching device is gradually decreased between the voltage zero crossing point and the voltage peak value;
In the negative half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the first switching device gradually decreases between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the second switching device gradually increases between the voltage zero crossing point and the voltage peak value.
By controlling the duty ratio of the pulse signal at the voltage zero crossing point and the voltage peak value of the alternating voltage signal, the waveform of the input current Is can be more approximate to the waveform of the alternating voltage signal, so that the improvement effect of the harmonic wave and the power factor of the input current Is improved.
Referring to fig. 6, when a pulse signal is sent to the fifth switching device K, the totem pole PFC circuit is in a voltage doubling state, and the control process of the first MOS transistor Q1, the second MOS transistor Q2, the third MOS transistor Q3, the fourth MOS transistor Q4, and the fifth switching device K is as follows:
In the positive half-wave of the alternating voltage signal, the first MOS tube Q1 is controlled to be kept on, the second MOS tube Q2 and the fourth MOS tube Q4 are controlled to be kept off, and pulse signals are sent to the third MOS tube Q3 and the fifth switching device K so that the third MOS tube Q3 and the fifth switching device K are alternately conducted. When the third MOS tube Q3 Is turned on and the fifth switching device K Is turned off, a loop passing through the alternating current power supply AC, the inductor L, the first MOS tube Q1 and the third MOS tube Q3 Is formed, energy storage Is carried out on the inductor L, and the input current Is rises; when the third MOS transistor Q3 Is turned off and the fifth switching device K Is turned off, the current of the inductor L forms a loop through the first MOS transistor Q1, the first capacitor C1 and the fifth switching device K, that Is, the inductor L, the first capacitor C1 and the fifth switching device K form a first oscillating loop in a positive half-wave of the ac voltage signal, the inductor L charges the first capacitor C1, and at this time, the input current Is decreases. In this way, the third MOS transistor Q3 and the fifth switching device K are alternately conducted to store energy and discharge energy to the inductor L, so that the voltage doubling effect Is achieved, the waveform of the input current Is controlled, the waveform of the input current Is enabled to change along with the input voltage Us, and the harmonic wave and the power factor of the input current Is are improved.
In the negative half wave of the alternating voltage signal, the second MOS tube Q2 is controlled to be kept on, the first MOS tube Q1 and the third MOS tube Q3 are controlled to be kept off, and pulse signals are sent to the fourth MOS tube Q4 and the fifth switching device K so that the fourth MOS tube Q4 and the fifth switching device K are alternately conducted. When the fourth MOS tube Q4 Is turned on and the fifth switching device K Is turned off, a loop passing through the alternating current power supply AC, the inductor L, the second MOS tube Q2 and the fourth MOS tube Q4 Is formed, energy storage Is carried out on the inductor L, and the input current Is rises; when the fourth MOS transistor Q4 Is turned off and the fifth switching device K Is turned on, the current of the inductor L forms a loop through the fifth switching device K, the second capacitor C2 and the second MOS transistor Q2, that Is, the inductor L, the second capacitor C2 and the fifth switching device K form a second oscillating loop in the negative half-wave of the ac voltage signal, the inductor L charges the second capacitor C2, and at this time, the input current Is decreases. In this way, the fourth MOS transistor Q4 and the fifth switching device K are alternately conducted, energy storage and energy release are carried out on the inductor L, and the voltage doubling effect Is achieved, namely, the first voltage Is output, so that the waveform of the input current Is controlled, the waveform of the input current Is enabled to change along with the input voltage Us, and the harmonic wave and the power factor of the input current Is are improved.
Wherein, in the positive half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the fifth switching device K gradually increases between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the third switching device gradually decreases between the voltage zero crossing point and the voltage peak value;
In the negative half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the fifth switching device K gradually increases between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the fourth switching device gradually decreases between the voltage zero crossing point and the voltage peak value.
By controlling the duty ratio of the pulse signal at the voltage zero crossing point and the voltage peak value of the alternating voltage signal, the waveform of the input current Is can be more approximate to the waveform of the alternating voltage signal, so that the improvement effect of the harmonic wave and the power factor of the input current Is improved.
Based on the above principle, the second voltage is slightly higher than the voltage peak of the alternating voltage signal, and the first voltage is about twice the voltage peak of the alternating voltage signal.
The controller is arranged to send pulse signals to the third switching device in the positive half wave of the alternating voltage signal and send pulse signals to the fourth switching device in the negative half wave of the alternating voltage signal, so that a first oscillating circuit and a second oscillating circuit are respectively formed, energy storage and energy release of the inductance device can be realized, the waveform of input current is controlled, the waveform of the input current is changed along with the alternating voltage signal, and the harmonic wave and the power factor of the input current are improved; in addition, by arranging the fifth switching device K, the first energy storage device and the second energy storage device can be charged and discharged respectively, so that the totem pole PFC circuit outputs the first voltage, and a totem pole voltage doubling scheme is realized. In addition, by controlling the first switching device and the second switching device to be alternately conducted to form a third oscillating loop, a totem pole boosting scheme can be realized, and the totem pole PFC circuit can output different voltage values; in addition, by controlling the first switching device, the second switching device, the third switching device and the fourth switching device respectively, the operation loss can be shared, so that the service life of the devices can be prolonged, and the working stability of the circuit can be improved.
In an embodiment, referring to fig. 7, the totem pole PFC circuit may further include a seventh diode D7 and an eighth diode D8, wherein an anode of the seventh diode D7 is connected to the third MOS transistor Q3, a cathode of the seventh diode D7 is connected to the first capacitor C1, a cathode of the eighth diode D8 is connected to the fourth MOS transistor Q4, and a cathode of the eighth diode D8 is connected to the second capacitor C2. Through setting up seventh diode D7 and eighth diode D8, can reach the control effect of unidirectional current conduction, avoid first energy storage device and second energy storage device current backward flow when discharging, improve the stability of circuit work.
On the basis, the fifth switching device K can be a relay besides the three structures, and due to the existence of the seventh diode D7 and the eighth diode D8, the current backflow of the first energy storage device and the second energy storage device during discharging can be avoided, so that the fifth switching device K can be kept on during controlling, and the control of the fifth switching device K is facilitated to be simplified.
Referring to fig. 8, based on the totem pole PFC circuit in fig. 1, an embodiment of the present invention further provides a totem pole PFC circuit control method, including, but not limited to, the following steps:
step 801: and sending pulse signals to the third switching device at the positive half wave of the alternating voltage signal and to the fourth switching device at the negative half wave of the alternating voltage signal, so that the inductance device, the first energy storage device and the fifth switching device form a first oscillation loop at the positive half wave of the alternating voltage signal, and the inductance device, the fifth switching device and the second energy storage device form a second oscillation loop at the negative half wave of the alternating voltage signal, so that the totem pole PFC circuit outputs the first voltage.
By transmitting pulse signals to the third switching device in the positive half wave of the alternating voltage signal and transmitting pulse signals to the fourth switching device in the negative half wave of the alternating voltage signal, a first oscillating circuit and a second oscillating circuit are respectively formed, energy storage and energy release of the inductance device can be achieved, the waveform of input current is controlled, the waveform of the input current changes along with the alternating voltage signal, and input current harmonic waves and power factors are improved. In addition, by arranging the fifth switching device, the first energy storage device and the second energy storage device can be charged and discharged respectively, so that the totem pole PFC circuit outputs the first voltage, and a totem pole voltage doubling scheme is realized.
In an embodiment, the totem pole PFC circuit control method may further include the following steps:
And controlling the first switching device and the second switching device to be alternately conducted, so that the inductance device, the first energy storage device and the second energy storage device form a third oscillation loop, and the totem pole PFC circuit outputs a second voltage.
The first switching device and the second switching device are controlled to be alternately conducted to form a third oscillating loop, so that a totem pole boosting scheme can be realized, and the totem pole PFC circuit can output different voltage values; in addition, by controlling the first switching device, the second switching device, the third switching device and the fourth switching device respectively, the operation loss can be shared, so that the service life of the devices can be prolonged, and the working stability of the circuit can be improved.
Referring to fig. 9, in an embodiment, the first switching device and the second switching device are controlled to be alternately turned on, and specifically includes the following steps:
Step 901: in the positive half wave of the alternating voltage signal, the third switching device and the fifth switching device are controlled to be kept off, the fourth switching device is controlled to be kept on, and pulse signals are sent to the first switching device and the second switching device so that the first switching device and the second switching device are alternately turned on;
Step 902: and in the negative half wave of the alternating voltage signal, the third switching device is controlled to be kept on, the fourth switching device and the fifth switching device are controlled to be kept off, and pulse signals are sent to the first switching device and the second switching device so that the first switching device and the second switching device are alternately turned on.
In step 901 to step 902, only the first switching device and the second switching device are controlled to perform frequent actions, and the third switching device, the fourth switching device and the fifth switching device do not need to perform frequent actions, so that the loss of the third switching device, the fourth switching device and the fifth switching device is reduced.
In step 901, in a positive half-wave of the ac voltage signal, the duty cycle of the pulse signal received by the first switching device gradually increases between the voltage zero-crossing point and the voltage peak value, and the duty cycle of the pulse signal received by the second switching device gradually decreases between the voltage zero-crossing point and the voltage peak value;
In step 902, during the negative half-wave of the ac voltage signal, the duty cycle of the pulse signal received by the first switching device gradually decreases between the voltage zero-crossing point and the voltage peak value, and the duty cycle of the pulse signal received by the second switching device gradually increases between the voltage zero-crossing point and the voltage peak value.
By controlling the duty cycle of the pulse signal at the voltage zero crossing point and the voltage peak value of the alternating voltage signal, the waveform of the input current can be more similar to the waveform of the alternating voltage signal, thereby improving the improvement effect of the harmonic wave and the power factor of the input current.
In an embodiment, in step 801, the pulse signal is sent to the third switching device in the positive half-wave of the ac voltage signal and sent to the fourth switching device in the negative half-wave of the ac voltage signal, specifically, the pulse signal is sent to the third switching device in the positive half-wave of the ac voltage signal and sent to the fourth switching device in the negative half-wave of the ac voltage signal, and the pulse signal is sent to the fifth switching device to control the third switching device and the fifth switching device to be alternately turned on and the fourth switching device and the fifth switching device to be alternately turned on, and by controlling the third switching device and the fifth switching device to be alternately turned on and the fourth switching device and the fifth switching device to be alternately turned on, the fifth switching device is in an off state when the first energy storage device or the second energy storage device discharges, so that current flowing backward when the first energy storage device and the second energy storage device discharge.
Specifically, referring to fig. 10, transmitting a pulse signal to the fifth switching device controls the third switching device and the fifth switching device to be alternately turned on, and the fourth switching device and the fifth switching device to be alternately turned on, specifically may include the steps of:
Step 1001: in the positive half wave of the alternating voltage signal, the first switching device is controlled to be kept on, the second switching device and the fourth switching device are controlled to be kept off, and pulse signals are sent to the third switching device and the fifth switching device so that the third switching device and the fifth switching device are alternately turned on;
Step 1002: and in the negative half wave of the alternating voltage signal, the second switching device is controlled to be kept on, the first switching device and the third switching device are controlled to be kept off, and pulse signals are sent to the fourth switching device and the fifth switching device so that the fourth switching device and the fifth switching device are alternately turned on.
In step 1001 to step 1002, only the third switching device, the fourth switching device and the fifth switching device are controlled to perform frequent actions, and the first switching device and the second switching device do not need to perform frequent actions, which is beneficial to reducing the loss of the first switching device and the second switching device.
In step 1001, in a positive half-wave of the ac voltage signal, the duty cycle of the pulse signal received by the fifth switching device gradually increases between the voltage zero-crossing point and the voltage peak value, and the duty cycle of the pulse signal received by the third switching device gradually decreases between the voltage zero-crossing point and the voltage peak value;
In step 1002, in a negative half-wave of the ac voltage signal, the duty cycle of the pulse signal received by the fifth switching device is gradually increased between the voltage zero-crossing point and the voltage peak value, and the duty cycle of the pulse signal received by the fourth switching device is gradually decreased between the voltage zero-crossing point and the voltage peak value.
By controlling the duty cycle of the pulse signal at the voltage zero crossing point and the voltage peak value of the alternating voltage signal, the waveform of the input current can be more similar to the waveform of the alternating voltage signal, thereby improving the improvement effect of the harmonic wave and the power factor of the input current.
In an embodiment, based on the circuit structure shown in fig. 7, in the step 801, the pulse signal is sent to the third switching device in the positive half-wave of the ac voltage signal and sent to the fourth switching device in the negative half-wave of the ac voltage signal, which may specifically be:
And sending a pulse signal to the third switching device at the positive half wave of the alternating voltage signal and sending a pulse signal to the fourth switching device at the negative half wave of the alternating voltage signal, and controlling the fifth switching device to maintain on.
Because the seventh diode and the eighth diode exist, current backflow of the first energy storage device and the second energy storage device during discharging can be avoided, and therefore the fifth switching device can be kept on during control, and control of the fifth switching device is facilitated to be simplified.
Referring to fig. 11, in an embodiment, the totem pole PFC circuit control method further includes the following steps:
step 1101: acquiring the load capacity of a totem pole PFC circuit;
step 1102: and outputting the second voltage or the first voltage according to the load amount.
And the output voltage of the totem pole PFC circuit is controlled according to the load quantity, so that the working efficiency of the totem pole PFC circuit is improved. Specifically, referring to fig. 12, in the step 1102, outputting the second voltage or the first voltage according to the load amount includes the following steps:
Step 1201: outputting a second voltage when the load capacity is less than twice the voltage peak value of the alternating voltage signal;
step 1202: and outputting the first voltage when the load amount is greater than or equal to twice the voltage peak value of the alternating voltage signal.
And the two times of the voltage peak value of the alternating voltage signal is used as a reference, so that the control refinement degree of the totem pole PFC circuit is improved. For example, when the ac power supply is input at 110V, if the optimal operating voltage of the load is 110V, i.e. the load capacity is 110V, a second voltage is output by implementing a boost totem pole, and the second voltage is slightly higher than 110V; if the optimal working voltage of the load is 220V, namely the load capacity is 220V, the first voltage is output through the voltage doubling totem pole, and the first voltage is about 220V.
Wherein, referring to fig. 1 or 7, the load amount may be obtained by a load amount detection circuit, wherein the load amount may be, but is not limited to, a load voltage, a load power, a load frequency, and the like.
The control principles of the first switching device, the second switching device, the third switching device, the fourth switching device and the fifth switching device are explained in the embodiments of the totem pole PFC circuit described above, and are not described herein.
It should also be appreciated that the various embodiments provided by the embodiments of the present invention may be arbitrarily combined to achieve different technical effects.
Referring to fig. 13, an embodiment of the present invention further provides a circuit board, where the circuit board includes the totem pole PFC circuit in the above embodiment, so that the circuit board sends pulse signals to the third switching device in a positive half wave of an ac voltage signal and to the fourth switching device in a negative half wave of the ac voltage signal by setting a controller, thereby forming a first tank circuit and a second tank circuit, respectively, and being capable of implementing energy storage and energy release of the inductive devices, thereby controlling a waveform of an input current, enabling the waveform of the input current to change along with the ac voltage signal, and improving an input current harmonic wave and a power factor; in addition, by arranging the fifth switching device, the first energy storage device and the second energy storage device can be charged and discharged respectively, so that the totem pole PFC circuit outputs the first voltage, and a totem pole voltage doubling scheme is realized. Referring to fig. 14, an embodiment of the present invention further provides an air conditioner, which includes the circuit board in the above embodiment, so that the air conditioner sends a pulse signal to a third switching device in a positive half wave of an ac voltage signal and to a fourth switching device in a negative half wave of the ac voltage signal by setting a controller, thereby forming a first tank circuit and a second tank circuit, respectively, and energy storage and energy release of an inductance device can be achieved, thereby controlling a waveform of an input current, enabling the waveform of the input current to change along with the ac voltage signal, and improving an input current harmonic wave and a power factor; in addition, by arranging the fifth switching device, the first energy storage device and the second energy storage device can be charged and discharged respectively, so that the totem pole PFC circuit outputs the first voltage, and a totem pole voltage doubling scheme is realized.
Fig. 15 shows an air conditioner 1500 according to an embodiment of the present invention, where the air conditioner 1500 includes: the totem pole PFC circuit control system comprises a memory 1501, a processor 1502 and a computer program stored in the memory 1501 and executable on the processor 1502, wherein the computer program is used for executing the totem pole PFC circuit control method.
The processor 1502 and the memory 1501 may be connected by a bus or other means.
The memory 1501 serves as a non-transitory computer readable storage medium, and may be used to store a non-transitory software program and a non-transitory computer executable program, such as the totem pole PFC circuit control method described in the embodiments of the present invention. The processor 1502 implements the totem pole PFC circuit control method described above by running non-transitory software programs and instructions stored in the memory 1501.
The memory 1501 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area can store and execute the totem pole PFC circuit control method. Furthermore, memory 1501 may include high-speed random access memory 1501, and may also include non-transitory memory 1501, such as at least one disk memory 1501 device, flash memory device, or other non-transitory solid state memory 1501 device. In some embodiments, the memory 1501 may optionally include a memory 1501 located remotely from the processor 1502, the remote memory 1501 being connectable to the air conditioner 1500 through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The non-transitory software programs and instructions required to implement the totem pole PFC circuit control method described above are stored in the memory 1501 and when executed by the one or more processors 1502, perform the totem pole PFC circuit control method described above, for example, perform the method steps described in fig. 8-12.
The embodiment of the invention also provides a computer readable storage medium which stores computer executable instructions for executing the totem pole PFC circuit control method.
In an embodiment, the computer-readable storage medium stores computer-executable instructions that are executed by the one or more control processors 1502, for example, by the one processor 1502 in the air conditioner 1500, which may cause the one or more processors 1502 to perform the totem pole PFC circuit control method described above, for example, performing the method steps described in fig. 8-12.
The above described apparatus embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically include 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 may include any information delivery media.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit and scope of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.
Claims (17)
1. The totem pole PFC circuit is characterized by comprising:
the bridge circuit comprises a first bridge arm and a second bridge arm which are mutually connected in parallel, wherein the first bridge arm comprises a first switching device and a second switching device which are mutually connected in series, the second bridge arm comprises a third switching device and a fourth switching device which are mutually connected in series, the public ends of the first switching device and the second switching device are connected with one end of an alternating current power supply through an inductance device, and the public ends of the third switching device and the fourth switching device are connected with the other end of the alternating current power supply;
The energy storage assembly comprises a first energy storage device and a second energy storage device which are mutually connected in series, and the energy storage assembly is connected with the second bridge arm in parallel;
a fifth switching device connected to the common terminal of the third switching device and the fourth switching device and the common terminal of the first energy storage device and the second energy storage device, respectively;
A controller connected to the first switching device, the second switching device, the third switching device, the fourth switching device, and the fifth switching device, respectively;
The controller sends pulse signals to the third switching device at positive half wave of an alternating voltage signal and to the fourth switching device at negative half wave of the alternating voltage signal, so that the inductance device, the first energy storage device and the fifth switching device form a first oscillation loop at positive half wave of the alternating voltage signal, and the inductance device, the fifth switching device and the second energy storage device form a second oscillation loop at negative half wave of the alternating voltage signal, so that the totem pole PFC circuit outputs a first voltage;
The controller also sends a pulse signal to the fifth switching device to control the third switching device and the fifth switching device to be alternately conducted, and the fourth switching device and the fifth switching device to be alternately conducted;
In the positive half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the fifth switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the third switching device is gradually decreased between the voltage zero crossing point and the voltage peak value;
In the negative half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the fifth switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the fourth switching device is gradually decreased between the voltage zero crossing point and the voltage peak value.
2. The totem pole PFC circuit of claim 1, wherein:
The controller controls the first switching device and the second switching device to be alternately conducted, so that the inductance device, the first energy storage device and the second energy storage device form a third oscillation loop, and the totem pole PFC circuit outputs a second voltage.
3. The totem pole PFC circuit of claim 2, wherein:
The controller sends pulse signals to the first switching device and the second switching device to control the first switching device and the second switching device to be alternately conducted;
In the positive half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the first switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the second switching device is gradually decreased between the voltage zero crossing point and the voltage peak value;
In the negative half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the first switching device gradually decreases between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the second switching device gradually increases between the voltage zero crossing point and the voltage peak value.
4. The totem pole PFC circuit of claim 1, wherein the fifth switching device comprises one of:
The device comprises a fifth MOS tube, a sixth MOS tube, a first diode and a second diode, wherein the sources of the fifth MOS tube and the sixth MOS tube are connected with each other, the negative electrode of the first diode is connected with the drain electrode of the fifth MOS tube, the drain electrode of the fifth MOS tube is connected with the common end of the third switching device and the fourth switching device, the negative electrode of the second diode is connected with the drain electrode of the sixth MOS tube, the drain electrode of the sixth MOS tube is connected with the common end of the first energy storage device and the second energy storage device, the positive electrodes of the first diode and the second diode are connected with the source electrode of the fifth MOS tube, and the grid electrodes of the fifth MOS tube and the sixth MOS tube are respectively connected with the controller;
the first IGBT tube and the second IGBT tube, the emitter of the first IGBT tube is connected with the collector of the second IGBT tube, the collector of the first IGBT tube is connected with the emitter of the second IGBT tube, the emitter of the first IGBT tube is connected with the common end of the third switch device and the fourth switch device, the collector of the first IGBT tube is connected with the common end of the first energy storage device and the second energy storage device, and the grid electrodes of the first IGBT tube and the second IGBT tube are respectively connected with the controller;
The device comprises a third IGBT tube, a third diode, a fourth diode, a fifth diode and a sixth diode, wherein the cathodes of the third diode and the fifth diode are connected with the collector of the third IGBT tube, the anodes of the fourth diode and the sixth diode are connected with the emitter of the third IGBT tube, the anodes of the third diode are respectively connected with the cathodes of the fourth diode and the common end of the third switching device and the fourth switching device, the anodes of the fifth diode are respectively connected with the cathodes of the sixth diode and the common end of the first energy storage device and the second energy storage device, and the grid of the third IGBT tube is connected with the controller.
5. The totem pole PFC circuit of claim 1, wherein:
The totem pole PFC circuit further comprises a seventh diode and an eighth diode, wherein the positive electrode of the seventh diode is connected with the third switching device, the negative electrode of the seventh diode is connected with the first energy storage device, the negative electrode of the eighth diode is connected with the fourth switching device, and the positive electrode of the eighth diode is connected with the second energy storage device.
6. The totem pole PFC circuit of claim 5, wherein:
The fifth switching device is a relay.
7. A totem pole PFC circuit control method is applied to a totem pole PFC circuit, and the totem pole PFC circuit comprises:
the bridge circuit comprises a first bridge arm and a second bridge arm which are mutually connected in parallel, wherein the first bridge arm comprises a first switching device and a second switching device which are mutually connected in series, the second bridge arm comprises a third switching device and a fourth switching device which are mutually connected in series, the public ends of the first switching device and the second switching device are connected with one end of an alternating current power supply through an inductance device, and the public ends of the third switching device and the fourth switching device are connected with the other end of the alternating current power supply;
The energy storage assembly comprises a first energy storage device and a second energy storage device which are mutually connected in series, and the energy storage assembly is connected with the second bridge arm in parallel;
a fifth switching device connected to the common terminal of the third switching device and the fourth switching device and the common terminal of the first energy storage device and the second energy storage device, respectively;
A controller connected to the first switching device, the second switching device, the third switching device, the fourth switching device, and the fifth switching device, respectively;
the totem pole PFC circuit control method comprises the following steps:
Transmitting pulse signals to the third switching device at positive half wave of an alternating voltage signal and to the fourth switching device at negative half wave of the alternating voltage signal, so that the inductance device, the first energy storage device and the fifth switching device form a first oscillation loop at positive half wave of the alternating voltage signal, and the inductance device, the fifth switching device and the second energy storage device form a second oscillation loop at negative half wave of the alternating voltage signal, so that the totem pole PFC circuit outputs a first voltage;
The step of transmitting a pulse signal to the third switching device at the positive half wave of the alternating voltage signal and to the fourth switching device at the negative half wave of the alternating voltage signal comprises the following steps:
Transmitting a pulse signal to the third switching device in the positive half wave of the alternating voltage signal and to the fourth switching device in the negative half wave of the alternating voltage signal, and transmitting a pulse signal to the fifth switching device to control the third switching device and the fifth switching device to be alternately conducted, and the fourth switching device and the fifth switching device to be alternately conducted;
In the positive half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the fifth switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the third switching device is gradually decreased between the voltage zero crossing point and the voltage peak value;
In the negative half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the fifth switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the fourth switching device is gradually decreased between the voltage zero crossing point and the voltage peak value.
8. The totem pole PFC circuit control method of claim 7, further comprising:
And controlling the first switching device and the second switching device to be alternately conducted, so that the inductance device, the first energy storage device and the second energy storage device form a third oscillation loop, and the totem pole PFC circuit outputs a second voltage.
9. The totem pole PFC circuit control method of claim 8, wherein the controlling the first switching device and the second switching device to alternate on comprises:
In the positive half wave of the alternating voltage signal, the third switching device and the fifth switching device are controlled to be kept off, the fourth switching device is controlled to be kept on, and pulse signals are sent to the first switching device and the second switching device so that the first switching device and the second switching device are alternately turned on;
And in the negative half wave of the alternating voltage signal, the third switching device is controlled to be kept on, the fourth switching device and the fifth switching device are controlled to be kept off, and pulse signals are sent to the first switching device and the second switching device so that the first switching device and the second switching device are alternately turned on.
10. The totem pole PFC circuit control method of claim 8, wherein:
In the positive half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the first switching device is gradually increased between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the second switching device is gradually decreased between the voltage zero crossing point and the voltage peak value;
In the negative half wave of the alternating voltage signal, the duty ratio of the pulse signal received by the first switching device gradually decreases between the voltage zero crossing point and the voltage peak value, and the duty ratio of the pulse signal received by the second switching device gradually increases between the voltage zero crossing point and the voltage peak value.
11. The totem pole PFC circuit control method of claim 7, wherein the sending of the pulse signal to the fifth switching device controls the third switching device and the fifth switching device to be turned on alternately and the fourth switching device and the fifth switching device to be turned on alternately, comprising:
In the positive half wave of the alternating voltage signal, controlling the first switching device to be kept on, controlling the second switching device and the fourth switching device to be kept off, and sending pulse signals to the third switching device and the fifth switching device so as to enable the third switching device and the fifth switching device to be alternately turned on;
And in the negative half wave of the alternating voltage signal, controlling the second switching device to be kept on, controlling the first switching device and the third switching device to be kept off, and sending pulse signals to the fourth switching device and the fifth switching device so as to enable the fourth switching device and the fifth switching device to be alternately turned on.
12. The method of claim 7, further comprising a seventh diode and an eighth diode, wherein an anode of the seventh diode is connected to the third switching device, a cathode of the seventh diode is connected to the first energy storage device, a cathode of the eighth diode is connected to the fourth switching device, an anode of the eighth diode is connected to the second energy storage device, and the step of transmitting a pulse signal to the third switching device in a positive half wave of an ac voltage signal and to the fourth switching device in a negative half wave of the ac voltage signal comprises:
and transmitting a pulse signal to the third switching device at the positive half wave of the alternating voltage signal and transmitting a pulse signal to the fourth switching device at the negative half wave of the alternating voltage signal, and controlling the fifth switching device to maintain on.
13. The totem pole PFC circuit control method of claim 8, further comprising:
Acquiring the load capacity of the totem pole PFC circuit;
And outputting the second voltage or the first voltage according to the load quantity.
14. The totem pole PFC circuit control method of claim 13, wherein the outputting the second voltage or the first voltage according to the load comprises at least one of:
Outputting the second voltage when the load amount is less than twice the voltage peak value of the alternating voltage signal;
And outputting the first voltage when the load capacity is greater than or equal to twice the voltage peak value of the alternating voltage signal.
15. A circuit board, characterized in that:
comprising a totem pole PFC circuit according to any of claims 1 to 6.
16. An air conditioner, characterized in that:
comprising the wiring board of claim 15;
Or alternatively
Comprising at least one processor and a memory for communication connection with the at least one processor; the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the totem pole PFC circuit control method according to any of claims 7 to 14.
17. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the totem pole PFC circuit control method according to any one of claims 7 to 14.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712464.0A CN113972827B (en) | 2020-07-22 | 2020-07-22 | Totem pole PFC circuit, control method thereof, circuit board, air conditioner and storage medium |
| PCT/CN2021/107400 WO2022017391A1 (en) | 2020-07-22 | 2021-07-20 | Totem pole pfc circuit and control method therefor, circuit board, air conditioner, and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010712464.0A CN113972827B (en) | 2020-07-22 | 2020-07-22 | Totem pole PFC circuit, control method thereof, circuit board, air conditioner and storage medium |
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| CN113972827A CN113972827A (en) | 2022-01-25 |
| CN113972827B true CN113972827B (en) | 2024-04-26 |
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| CN202010712464.0A Active CN113972827B (en) | 2020-07-22 | 2020-07-22 | Totem pole PFC circuit, control method thereof, circuit board, air conditioner and storage medium |
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| WO (1) | WO2022017391A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119283A (en) * | 1991-06-10 | 1992-06-02 | General Electric Company | High power factor, voltage-doubler rectifier |
| CN101039065A (en) * | 2006-03-17 | 2007-09-19 | 海尔集团公司 | Partial active electrical source power factor correction circuit |
| JP2015035851A (en) * | 2013-08-07 | 2015-02-19 | 株式会社村田製作所 | Switching power supply device |
| EP3043460A1 (en) * | 2013-10-08 | 2016-07-13 | ZTE Corporation | Control device and method of totem-pole bridgeless pfc soft switch |
| CN108649787A (en) * | 2018-06-14 | 2018-10-12 | 广东美的制冷设备有限公司 | Driving circuit, power factor correction controller and driving method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6137700A (en) * | 1997-10-08 | 2000-10-24 | Daikin Industries, Ltd. | Converter with a high power factor using a DC center point voltage |
| CN109802483B (en) * | 2018-12-31 | 2022-11-15 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Multiphase motor channel fault ride-through operation control method |
| CN110868060B (en) * | 2019-11-29 | 2023-07-21 | 广东美的制冷设备有限公司 | Control method, control device, home appliance and computer readable storage medium |
| CN212305139U (en) * | 2020-07-22 | 2021-01-05 | 广东美的制冷设备有限公司 | Totem-pole power factor correction circuit, driving device, compressor and air conditioning equipment |
-
2020
- 2020-07-22 CN CN202010712464.0A patent/CN113972827B/en active Active
-
2021
- 2021-07-20 WO PCT/CN2021/107400 patent/WO2022017391A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119283A (en) * | 1991-06-10 | 1992-06-02 | General Electric Company | High power factor, voltage-doubler rectifier |
| CN101039065A (en) * | 2006-03-17 | 2007-09-19 | 海尔集团公司 | Partial active electrical source power factor correction circuit |
| JP2015035851A (en) * | 2013-08-07 | 2015-02-19 | 株式会社村田製作所 | Switching power supply device |
| EP3043460A1 (en) * | 2013-10-08 | 2016-07-13 | ZTE Corporation | Control device and method of totem-pole bridgeless pfc soft switch |
| CN108649787A (en) * | 2018-06-14 | 2018-10-12 | 广东美的制冷设备有限公司 | Driving circuit, power factor correction controller and driving method |
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| WO2022017391A1 (en) | 2022-01-27 |
| CN113972827A (en) | 2022-01-25 |
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