CN114070033A - Control method and control device of power factor correction module - Google Patents
Control method and control device of power factor correction module Download PDFInfo
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- CN114070033A CN114070033A CN202010786002.3A CN202010786002A CN114070033A CN 114070033 A CN114070033 A CN 114070033A CN 202010786002 A CN202010786002 A CN 202010786002A CN 114070033 A CN114070033 A CN 114070033A
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention provides a control method and a control device of a power factor correction module, and a vehicle comprising the control device. The control method of the power factor correction module is applied to the power factor correction module, and the power factor correction module comprises an inductance module, a high-frequency bridge arm module, a power frequency bridge arm and a bus capacitor; the control method comprises the following steps: when the inductance module, the high-frequency bridge arm module, the power-frequency bridge arm and the bus capacitor form a follow current circuit, a follow current switch tube in the high-frequency bridge arm module is turned off, current is conducted through a parasitic diode connected with the follow current switch tube in parallel, and the rest switch tubes in the high-frequency bridge arm module are controlled to be turned on and off in a staggered mode to charge the bus capacitor. The control method and the control device of the power factor correction module can slow down the temperature rise of the MOS tube, thereby reducing the switching loss, prolonging the service life of the MOS tube and preventing the MOS tube from being damaged.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a control method and a control device of a power factor correction module.
Background
Along with the commercialization progress of electric vehicles, an electric vehicle DC-ac DC converter and an on-board controller OBC charger have become one of important parts of the electric vehicle. DC and OBC can be integrated in a loop, an isolation charger usually adopts a front-stage power factor correction PFC constant voltage, a rear-stage logic link controls an LLC resonance circuit isolation charging mode, and the front-stage PFC constant fixed voltage in the prior art is controlled to be output by means of LLC frequency modulation to adapt to a battery voltage platform.
The high-frequency switch in the existing power factor correction module is frequently switched in the charging process, so that the switching times are more, and the problem of large switching loss exists.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to provide a control method of a power factor correction module, and a control device and a vehicle having the control device applying the control method.
The control method of the power factor correction module according to the embodiment of the first aspect of the invention is applied to the power factor correction module, and the power factor correction module comprises an inductance module, a high-frequency bridge arm module, a power-frequency bridge arm and a bus capacitor; the control method comprises the following steps: when the inductance module, the high-frequency bridge arm module, the power-frequency bridge arm and the bus capacitor form a follow current circuit, a follow current switch tube in the high-frequency bridge arm module is turned off, current is conducted through a parasitic diode connected with the follow current switch tube in parallel, and the rest switch tubes in the high-frequency bridge arm module are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
In some embodiments according to the invention, the control method comprises: the high-frequency bridge arm module comprises at least one phase of high-frequency bridge arm, when the high-frequency bridge arm module is a phase of high-frequency bridge arm, the high-frequency bridge arm comprises a first high-frequency switch assembly and a second high-frequency switch assembly, the first high-frequency switch assembly comprises a first high-frequency switch tube and a first parasitic body diode connected with the first high-frequency switch tube in parallel, and the second high-frequency switch assembly comprises a second high-frequency switch tube and a second parasitic body diode connected with the second high-frequency switch tube in parallel; when the power grid is in a positive period, the inductance module, the first high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the first high-frequency switch tube is turned off, current is conducted through the first parasitic diode, and the second high-frequency switch tube is controlled to be turned on and off in a staggered mode to charge the bus capacitor; and when the power grid is in a negative cycle, the inductance module, the second high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the second high-frequency switch tube is turned off, current is conducted through the second parasitic diode, and the first high-frequency switch tube is controlled to be turned on and off in a staggered mode to charge the bus capacitor.
In some embodiments according to the embodiments of the present invention, when the high-frequency bridge arm module is at least two-phase high-frequency bridge arm, each newly added high-frequency bridge arm includes a third high-frequency switch component and a fourth high-frequency switch component, the third high-frequency switch component includes a third high-frequency switch tube and a third parasitic body diode connected in parallel with the third high-frequency switch tube, and the fourth high-frequency switch component includes a fourth high-frequency switch tube and a fourth parasitic body diode connected in parallel with the fourth high-frequency switch tube; when the power grid is in a positive cycle, the inductance module, the first high-frequency switch assembly and/or the third high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the first high-frequency switch tube and/or the third high-frequency switch tube are turned off, current is conducted through the first parasitic body diode and/or the third high-frequency switch tube, and the second high-frequency switch tube and/or the fourth high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor; and when the power grid is in a negative cycle, the inductance module, the second high-frequency switch assembly and/or the fourth high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the second high-frequency switch tube and/or the fourth high-frequency switch tube are turned off, current is conducted through the second parasitic body diode and/or the fourth high-frequency switch tube, and the first high-frequency switch tube and/or the third high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
In some embodiments according to the invention, the control method further comprises: determining actual charging power; determining the number of bridge arms entering a working state in the at least two phases of high-frequency bridge arms according to a comparison result of the actual charging power and a preset power threshold; and after controlling the high-frequency bridge arms with the number of the bridge arms to work for a specific time, selecting the high-frequency bridge arms with the number of the bridge arms from the rest high-frequency bridge arms to enter a working state so as to realize that the at least two high-frequency bridge arms circularly enter the working state.
In some embodiments according to the embodiments of the present invention, the specific time period is a preset time period, or the specific time period is a time period required for the temperature of the high-frequency switching tube to reach a preset temperature threshold after entering the operating state.
In some embodiments according to the invention, the control method further comprises: when a charging stop instruction is received, acquiring the working time of the high-frequency bridge arms of the bridge arm number, and marking the high-frequency bridge arms; when a charging starting instruction is received again, the marked high-frequency bridge arms are firstly controlled to enter a working state and work for a remaining time length, and then the at least two-phase high-frequency bridge arms are controlled to circularly enter a working transition state, wherein the remaining time length is the specific time length-the working time length.
In some embodiments according to the invention, wherein the step of determining the actual charging power comprises: acquiring charging box parameter information of the charging box, and determining first power according to the charging box parameter information; acquiring power grid parameter information of the power grid, and determining second power according to the power grid parameter information; acquiring battery parameter information of the battery, and determining a third power according to the battery parameter information; and determining that a minimum one of the first power, the second power, and the third power is the actual charging power.
According to a second aspect of the invention, a control device for a power factor correction module comprises: an inductance module; the middle point of the high-frequency bridge arm module is connected with the first end of the inductance module; the power frequency bridge arm is connected with the high-frequency bridge arm module in parallel, the midpoint of the power frequency bridge arm is connected with the first end of a charging port, and the second end of the charging port is connected with the second end of the inductance module; the bus capacitor is connected with the power frequency bridge arm in parallel; a controller connected to the high frequency bridge arm module and the power frequency bridge arm, respectively, the controller configured to: when the inductance module, the high-frequency bridge arm module, the power-frequency bridge arm and the bus capacitor form a follow current circuit, a follow current switch tube in the high-frequency bridge arm module is turned off, current is conducted through a parasitic diode connected with the follow current switch tube in parallel, and the rest switch tubes in the high-frequency bridge arm module are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
In some embodiments according to the invention, the inductance module comprises a first inductance and a second inductance; the high-frequency bridge arm module comprises a first high-frequency bridge arm and a second high-frequency bridge arm; the first high-frequency bridge arm comprises a first high-frequency switch assembly and a second high-frequency switch assembly, the first high-frequency switch assembly comprises a first high-frequency switch tube and a first parasitic body diode connected with the first high-frequency switch tube in parallel, and the second high-frequency switch assembly comprises a second high-frequency switch tube and a second parasitic body diode connected with the second high-frequency switch tube in parallel; the second high-frequency bridge arm comprises a third high-frequency switch assembly and a fourth high-frequency switch assembly, the third high-frequency switch assembly comprises a third high-frequency switch tube and a third parasitic body diode connected with the third high-frequency switch tube in parallel, and the fourth high-frequency switch assembly comprises a fourth high-frequency switch tube and a fourth parasitic body diode connected with the fourth high-frequency switch tube in parallel; a controller configured to: when the power grid is in a positive cycle, the inductance module, the first high-frequency switch assembly and/or the third high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the first high-frequency switch tube and/or the third high-frequency switch tube are turned off, current is conducted through the first parasitic body diode and/or the third high-frequency switch tube, and the second high-frequency switch tube and/or the fourth high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor; and a controller configured to: when the power grid is in a negative cycle, the inductance module, the second high-frequency switch assembly and/or the fourth high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the second high-frequency switch tube and/or the fourth high-frequency switch tube are turned off, current is conducted through the second parasitic body diode and/or the fourth high-frequency switch tube, and the first high-frequency switch tube and/or the third high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
A vehicle according to an embodiment of the second aspect of the invention includes the control device of the power factor correction module described in the embodiment of the second aspect.
Compared with the prior art, when the high-frequency bridge arm module is in the follow current stage, the follow current switch tube in the high-frequency bridge arm module is directly turned off, and current is conducted through the parasitic diode which is connected with the follow current switch tube in parallel. Meanwhile, each phase of high-frequency bridge arm in the high-frequency bridge arm module comprises two switching tubes connected in series, and the two switching tubes alternately serve as switching tubes for follow current. Therefore, by implementing the control method, the switching times of all the switching tubes in the high-frequency bridge arm module are reduced, so that the switching loss is reduced, and the service life of the switching tubes is prolonged. Further, when the switching tube corresponding to the follow current switching tube in each phase of high-frequency bridge arm is alternately turned on and off, if the drive of the follow current switching tube is unstable, the drive negative voltage is punctured with a high probability, so that the follow current switching tube is damaged. However, by implementing the control method of the present application, the switching tube for discontinuous current is directly turned off, so that the problem that the switching tube for follow current is damaged due to unstable driving of the switching tube for follow current is avoided, and the use safety of the switching tube in the high-frequency bridge arm is further improved.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail embodiments of the present invention with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings, like reference numbers generally represent like parts or steps.
Fig. 1 is a circuit diagram of a control apparatus of a power factor correction module according to an embodiment of the present invention;
fig. 2 is a current trend diagram of an energy storage node when a power grid is in a positive cycle of a control device of a power factor correction module according to an embodiment of the present invention;
fig. 3 is a current trend diagram of a freewheeling node when the grid is in a positive cycle of a control device of a power factor correction module according to an embodiment of the present invention;
fig. 4 is a current trend diagram of an energy storage node when a power grid is in a negative cycle of a control device of a power factor correction module according to an embodiment of the present invention;
fig. 5 is a current trend diagram of a freewheeling node when the grid is in a negative cycle of a control device of a power factor correction module according to an embodiment of the present invention;
FIG. 6 is a diagram showing the temperature rise comparison between the control device of the power factor correction module according to the embodiment of the present invention and the circuit in the prior art; and
fig. 7 is a flowchart illustrating a control method of a power factor correction module according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention described herein without inventive step, shall fall within the scope of protection of the invention.
A control apparatus of a power factor correction module according to an embodiment of the present invention will be described first with reference to fig. 1. The control device of the power factor correction module has at least two implementation modes.
For the first aspect, as shown in fig. 1, the control device of the power factor correction module includes: an inductance module; the middle point of the high-frequency bridge arm module is connected with the first end of the inductance module; the power frequency bridge arm is connected with the high-frequency bridge arm module in parallel, the midpoint of the power frequency bridge arm is connected with the first end of a charging port, and the second end of the charging port is connected with the second end of the inductance module; the bus capacitor is connected with the power frequency bridge arm in parallel; a controller connected to the high frequency bridge arm module and the power frequency bridge arm, respectively, the controller configured to: when the inductance module, the high-frequency bridge arm module, the power-frequency bridge arm and the bus capacitor form a follow current circuit, a follow current switch tube in the high-frequency bridge arm module is turned off, current is conducted through a parasitic diode connected with the follow current switch tube in parallel, and the rest switch tubes in the high-frequency bridge arm module are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
In some embodiments according to the invention, the high frequency leg module comprises at least one phase high frequency leg; when the high-frequency bridge arm module is a one-phase high-frequency bridge arm, the high-frequency bridge arm comprises a first high-frequency switch assembly and a second high-frequency switch assembly, the first high-frequency switch assembly comprises a first high-frequency switch tube and a first parasitic body diode connected with the first high-frequency switch tube in parallel, and the second high-frequency switch assembly comprises a second high-frequency switch tube and a second parasitic body diode connected with the second high-frequency switch tube in parallel. Specifically, the first high-frequency switch tube is Q1 shown in fig. 1, and the second high-frequency switch tube is Q2 shown in fig. 1.
The controller to be configured to: when the power grid is in a positive period, the inductance module, the first high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the first high-frequency switch tube is turned off, current is conducted through the first parasitic diode, and the second high-frequency switch tube is controlled to be turned on and off in a staggered mode to charge the bus capacitor. And the controller is further configured to: when the power grid is in a negative cycle, the inductance module, the second high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the second high-frequency switch tube is turned off, current is conducted through the second parasitic diode, and the first high-frequency switch tube is controlled to be turned on and off in a staggered mode to charge the bus capacitor.
Compared with the prior art, the control device of the power factor correction module of the embodiment directly turns off the follow current switching tube in the high-frequency bridge arm module when the high-frequency bridge arm module is in the follow current stage, and conducts current through the parasitic diode connected in parallel with the follow current switching tube. Meanwhile, one-phase high-frequency bridge arm in the high-frequency bridge arm module comprises two switching tubes which are connected in series, and the two switching tubes alternately serve as switching tubes for follow current. Therefore, by implementing the control device, the switching times of all the switching tubes in the high-frequency bridge arm module are reduced, so that the switching loss is reduced, and the service life of the switching tubes is prolonged. Further, when the switching tube corresponding to the follow current switching tube in the one-phase high-frequency bridge arm is alternately turned on and off, if the drive of the follow current switching tube is unstable, the drive negative voltage is punctured with a high probability, so that the follow current switching tube is damaged. However, the control device of the application directly turns off the switching tube for intermittent current, avoids the problem that the switching tube for follow current is damaged due to unstable driving of the switching tube for follow current, and further improves the use safety of the switching tube in the high-frequency bridge arm.
For the second aspect, as shown in fig. 1, in the control device of the power factor correction module, the inductance module includes a first inductance and a second inductance; the high-frequency bridge arm module comprises a first high-frequency bridge arm and a second high-frequency bridge arm; the first high-frequency bridge arm comprises a first high-frequency switch assembly and a second high-frequency switch assembly, the first high-frequency switch assembly comprises a first high-frequency switch tube and a first parasitic body diode connected with the first high-frequency switch tube in parallel, and the second high-frequency switch assembly comprises a second high-frequency switch tube and a second parasitic body diode connected with the second high-frequency switch tube in parallel; the second high-frequency bridge arm comprises a third high-frequency switch assembly and a fourth high-frequency switch assembly, the third high-frequency switch assembly comprises a third high-frequency switch tube and a third parasitic body diode connected with the third high-frequency switch tube in parallel, and the fourth high-frequency switch assembly comprises a fourth high-frequency switch tube and a fourth parasitic body diode connected with the fourth high-frequency switch tube in parallel. A controller configured to: when the power grid is in a positive cycle, the inductance module, the first high-frequency switch assembly and/or the third high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the first high-frequency switch tube and/or the third high-frequency switch tube are turned off, current is conducted through the first parasitic body diode and/or the third high-frequency switch tube, and the second high-frequency switch tube and/or the fourth high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor; and a controller configured to: when the power grid is in a negative cycle, the inductance module, the second high-frequency switch assembly and/or the fourth high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the second high-frequency switch tube and/or the fourth high-frequency switch tube are turned off, current is conducted through the second parasitic body diode and/or the fourth high-frequency switch tube, and the first high-frequency switch tube and/or the third high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
Specifically, the high-frequency bridge arm module comprises a first high-frequency bridge arm and a second high-frequency bridge arm, wherein the first high-frequency bridge arm comprises Q1 and Q2 shown in FIG. 1 and parasitic body diodes which are respectively connected in parallel, and the second high-frequency bridge arm comprises Q3 and Q4 shown in FIG. 1 and parasitic body diodes which are respectively connected in parallel.
Although only a high frequency bridge arm module comprising two high frequency bridge arms is shown in the present embodiment, more high frequency bridge arms may be added according to the specific practical requirements.
Compared with the prior art, the control device of the power factor correction module of the embodiment directly turns off the follow current switching tube in the high-frequency bridge arm module when the high-frequency bridge arm module is in the follow current stage, and conducts current through the parasitic diode connected in parallel with the follow current switching tube. Meanwhile, each phase of high-frequency bridge arm in the high-frequency bridge arm module comprises two switching tubes connected in series, and the two switching tubes alternately serve as switching tubes for follow current. Therefore, by implementing the control device, the switching times of all the switching tubes in the high-frequency bridge arm module are reduced, so that the switching loss is reduced, and the service life of the switching tubes is prolonged. Further, when the switching tube corresponding to the follow current switching tube in each phase of high-frequency bridge arm is alternately turned on and off, if the drive of the follow current switching tube is unstable, the drive negative voltage is punctured with a high probability, so that the follow current switching tube is damaged. However, the control device of the application directly turns off the switching tube for intermittent current, avoids the problem that the switching tube for follow current is damaged due to unstable driving of the switching tube for follow current, and further improves the use safety of the switching tube in the high-frequency bridge arm.
Next, a control method of a power factor correction module according to an embodiment of the present invention and an operation principle thereof are described with reference to fig. 2 to 5, the control method being applied to the power factor correction module shown in fig. 2 to 5.
According to the embodiment of the invention, the control method of the power factor correction module is applied to the power factor correction module, and the power factor correction module comprises an inductance module, a high-frequency bridge arm module, a power-frequency bridge arm and a bus capacitor; the control method comprises the following steps: when the inductance module, the high-frequency bridge arm module, the power-frequency bridge arm and the bus capacitor form a follow current circuit, a follow current switch tube in the high-frequency bridge arm module is turned off, current is conducted through a parasitic diode connected with the follow current switch tube in parallel, and the rest switch tubes in the high-frequency bridge arm module are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
In some embodiments according to the embodiments of the present invention, the method comprises: the high-frequency bridge arm module comprises at least one phase of high-frequency bridge arm, when the high-frequency bridge arm module is a phase of high-frequency bridge arm, the high-frequency bridge arm comprises a first high-frequency switch assembly and a second high-frequency switch assembly, the first high-frequency switch assembly comprises a first high-frequency switch tube and a first parasitic body diode connected with the first high-frequency switch tube in parallel, and the second high-frequency switch assembly comprises a second high-frequency switch tube and a second parasitic body diode connected with the second high-frequency switch tube in parallel; when the power grid is in a positive period, the inductance module, the first high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the first high-frequency switch tube is turned off, current is conducted through the first parasitic diode, and the second high-frequency switch tube is controlled to be turned on and off in a staggered mode to charge the bus capacitor; and when the power grid is in a negative cycle, the inductance module, the second high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the second high-frequency switch tube is turned off, current is conducted through the second parasitic diode, and the first high-frequency switch tube is controlled to be turned on and off in a staggered mode to charge the bus capacitor.
Compared with the prior art, the control method in the embodiment directly turns off the follow current switching tube in the high-frequency bridge arm module when the high-frequency bridge arm module is in the follow current stage, and conducts the current through the parasitic diode which is connected with the follow current switching tube in parallel. Meanwhile, one-phase high-frequency bridge arm in the high-frequency bridge arm module comprises two switching tubes which are connected in series, and the two switching tubes alternately serve as switching tubes for follow current. Therefore, by implementing the control method, the switching times of all the switching tubes in the high-frequency bridge arm module are reduced, so that the switching loss is reduced, and the service life of the switching tubes is prolonged. Further, when the switching tube corresponding to the follow current switching tube in the one-phase high-frequency bridge arm is alternately turned on and off, if the drive of the follow current switching tube is unstable, the drive negative voltage is punctured with a high probability, so that the follow current switching tube is damaged. However, by implementing the control method of the present application, the switching tube for discontinuous current is directly turned off, so that the problem that the switching tube for follow current is damaged due to unstable driving of the switching tube for follow current is avoided, and the use safety of the switching tube in the high-frequency bridge arm is further improved.
In some embodiments according to the embodiments of the present invention, when the high-frequency bridge arm module is at least two-phase high-frequency bridge arm, each newly added high-frequency bridge arm includes a third high-frequency switch component and a fourth high-frequency switch component, the third high-frequency switch component includes a third high-frequency switch tube and a third parasitic body diode connected in parallel with the third high-frequency switch tube, and the fourth high-frequency switch component includes a fourth high-frequency switch tube and a fourth parasitic body diode connected in parallel with the fourth high-frequency switch tube; when the power grid is in a positive cycle, the inductance module, the first high-frequency switch assembly and/or the third high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the first high-frequency switch tube and/or the third high-frequency switch tube are turned off, current is conducted through the first parasitic body diode and/or the third high-frequency switch tube, and the second high-frequency switch tube and/or the fourth high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor; and when the power grid is in a negative cycle, the inductance module, the second high-frequency switch assembly and/or the fourth high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the second high-frequency switch tube and/or the fourth high-frequency switch tube are turned off, current is conducted through the second parasitic body diode and/or the fourth high-frequency switch tube, and the first high-frequency switch tube and/or the third high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
The control method of the power factor correction module can control according to the real-time state of a power grid, so that the MOS tube is always turned off in a follow current state, and current flows through the parasitic body diode which is quickly recovered, thereby reducing the switching loss and greatly prolonging the service life of a product. When the power grid is in a positive period, the high-frequency upper tube is switched off, and the high-frequency lower tube is switched on and switched off in a staggered mode; when the power grid is in a negative cycle, the high-frequency lower tube is switched off, and the high-frequency upper tube is switched on and off in a staggered mode.
Specifically, when the power grid is in a positive cycle, the power grid comprises an energy storage phase and a free-wheeling phase.
In the energy storage stage, the power grid is in a positive cycle, power flows into the second high-frequency switch tube Q2 and the fourth high-frequency switch tube Q4 from an L line and is conducted, the power frequency lower tube Q6 is conducted, at the moment, the inductors L1 and L2 and the switch tubes Q2, Q4 and Q6 form a loop, and energy is stored for the inductors L1 and L2.
In the freewheeling stage, the power grid is in a positive cycle, the second high-frequency switching tube Q2 and the fourth high-frequency switching tube Q4 are turned off, the energy storage process of the inductors L1 and L2 is finished, freewheeling is carried out through parasitic body diodes of the first high-frequency switching tube Q1 and the third high-frequency switching tube Q3, the bus capacitor C1 is charged, and current returns to the negative pole of the power grid from the Q6.
Specifically, when the power grid is in a negative cycle, the energy storage phase and the follow current phase are also included.
In the energy storage stage, the power grid is in a negative cycle, power flows into a power frequency upper tube Q5 from a PE (polyethylene) line and is conducted, a first high-frequency switching tube Q1 and a third high-frequency switching tube Q3 are conducted, and at the moment, inductors L1 and L2 and switching tubes Q1, Q3 and Q5 form a loop to store energy for the inductors L1 and L2.
In the freewheeling stage, the power grid is in a negative cycle, the first high-frequency switching tube Q1 and the third high-frequency switching tube Q3 are turned off, the energy storage process of the inductors L1 and L2 is finished, the freewheeling is realized through the parasitic body diodes of the second high-frequency switching tube Q2 and the fourth high-frequency switching tube Q4, the bus capacitor C1 is charged, and the current returns to the positive pole of the power grid from the Q5.
Specifically, as shown in fig. 2 to 5, two diodes (D1 and D2) are provided on the first inductor L1 to realize the surge protection function. When the power grid is in a positive cycle, the first high-frequency switching tube Q1/the third high-frequency switching tube Q3 are in a follow current state, and the MOS tube on the high-frequency bridge arm is not switched on or off at high frequency (Q1/Q3). When in the freewheeling stage, the first high-frequency switch Q1 is controlled to be turned off, and the third high-frequency switch Q3 is controlled to be turned off, and current flows through the fast-recovery parasitic body diode.
When the power grid is in a negative cycle, the second high-frequency switching tube Q2/the fourth high-frequency switching tube Q4 in the high-frequency bridge arm are in a follow current state, and the MOS tube under the high-frequency bridge arm is not switched on or off at high frequency (Q2/Q4).
Although only the control method of the high frequency leg module including two high frequency legs is shown in the present embodiment, more high frequency legs may be added according to the specific practical requirements.
Compared with the prior art, the control method of the embodiment directly turns off the follow current switching tube in the high-frequency bridge arm module when the high-frequency bridge arm module is in the follow current stage, and conducts current through the parasitic diode connected in parallel with the follow current switching tube. Meanwhile, each phase of high-frequency bridge arm in the high-frequency bridge arm module comprises two switching tubes connected in series, and the two switching tubes alternately serve as switching tubes for follow current. Therefore, by implementing the control method, the switching times of all the switching tubes in the high-frequency bridge arm module are reduced, so that the switching loss is reduced, and the service life of the switching tubes is prolonged. Further, when the switching tube corresponding to the follow current switching tube in each phase of high-frequency bridge arm is alternately turned on and off, if the drive of the follow current switching tube is unstable, the drive negative voltage is punctured with a high probability, so that the follow current switching tube is damaged. However, by implementing the control method of the present application, the switching tube for discontinuous current is directly turned off, so that the problem that the switching tube for follow current is damaged due to unstable driving of the switching tube for follow current is avoided, and the use safety of the switching tube in the high-frequency bridge arm is further improved.
The control method of the power factor correction module of the embodiment of the invention can slow down the temperature rise of the MOS tube, thereby reducing the switching loss, prolonging the service life of the MOS tube and preventing the MOS tube from being damaged.
The advantageous effects of the control device and the control method of the power factor correction module according to the embodiments of the present invention in controlling the temperature of the switching tube compared to the prior art will be described with reference to fig. 6. Fig. 6 is a diagram showing a comparison of the device temperature rise of the control apparatus and the control method of the power factor correction module according to the embodiment of the present invention and a circuit in the related art.
As shown in fig. 6, compared with the prior art, the temperature rising trend of the power frequency switching tubes Q5 and Q6 in the power frequency bridge arm of the control apparatus and control method of the power factor correction module in the present invention shows that the temperature rising speed is slow and the temperature rising is low in the early stage, and the temperature rising is lower and close to the temperature rising of the prior art, and finally, the temperature is higher than the temperature of Q5 and Q6 in the prior art only after a certain time threshold value.
Therefore, compared with the control device and the control method of the power factor correction module in the prior art, the control device and the control method of the power factor correction module in the embodiment of the invention can slow down the temperature rise of the MOS tube, thereby reducing the switching loss, prolonging the service life of the MOS tube and preventing the MOS tube from being damaged.
According to another aspect of the present invention, a control method of a power factor correction module is provided. A control method of a power factor correction module according to an embodiment of the present invention is described below with reference to fig. 7.
As shown in fig. 7, a control method of a power factor correction module includes: determining actual charging power; determining the number of bridge arms entering a working state in the at least two phases of high-frequency bridge arms according to a comparison result of the actual charging power and a preset power threshold; and after controlling the high-frequency bridge arms with the number of the bridge arms to work for a specific time, selecting the high-frequency bridge arms with the number of the bridge arms from the rest high-frequency bridge arms to enter a working state so as to realize that the at least two high-frequency bridge arms circularly enter the working state.
Specifically, charging piles with different powers exist in the market, so the charger may not work in a full-load state all the time, and when the charger is in a half-load or light-load state, if 4 MOS transistors work at high frequency at the same time, the switching loss is large, and the service life of the charger is shortened.
In some embodiments according to the embodiments of the present invention, the step of determining the actual charging power comprises: acquiring charging box parameter information of the charging box, and determining first power according to the charging box parameter information; acquiring power grid parameter information of the power grid, and determining second power according to the power grid parameter information; acquiring battery parameter information of the battery, and determining a third power according to the battery parameter information; and determining that a minimum one of the first power, the second power, and the third power is the actual charging power. Specifically, there are three schemes for obtaining the power level: (1) determining the type of a charging box through interactive communication with the charging CC and the CP, and further determining the power grade; (2) detecting the current at the alternating current side during charging, namely the current of a power grid, by software, and determining the power grade; (3) and determining the power grade through the allowable charging power of the battery pack of the whole vehicle.
In the embodiment, when the high-frequency switch is performed, a part of MOS (metal oxide semiconductor) tubes are controlled to be normally closed, a parasitic body diode is used for freewheeling, and the freewheeling states of different bridge arms are controlled according to different charging power grades.
In some embodiments according to the present invention, the specific time period is a preset time period, or the specific time period is a time period required for the temperature of the high-frequency switching tube to reach a preset temperature threshold after entering the operating state.
In some embodiments according to the invention, the control method further comprises: when a charging stop instruction is received, acquiring the working time of the high-frequency bridge arms of the bridge arm number, and marking the high-frequency bridge arms; when a charging starting instruction is received again, the marked high-frequency bridge arms are firstly controlled to enter a working state and work for a remaining time length, and then the at least two-phase high-frequency bridge arms are controlled to circularly enter a working transition state, wherein the remaining time length is the specific time length-the working time length.
Specifically, the power can be distinguished below 3.3kw and between 3.3kw and 6.6kw by the power flag. When the power flag bit is 0, the power is indicated to be less than 3.3kw, and when the power flag bit is 1, the power is indicated to be 3.3kw to 6.6 kw.
The bridge arm number of the switching tubes Q1 and Q2 in the two bridge arms is No. 1, the bridge arm number of the switching tubes Q3 and Q4 is No. 2, and the total number is two groups of bridge arm 1 and bridge arm 2. Dividing the power into two grades of less than 3.3KW and 3.3 to 6.6KW, setting a remaining time flag Ts and a power flag.
And each bridge arm alternately works for T power grid periods, and when the bridge arm stops working, the rest Ts power grid periods are recorded. When one bridge arm is in a working state and a stop instruction or a charging completion instruction is received, only S power grid cycles are currently completed, and Ts power grid cycles remain, namely: Ts-S. When the bridge arm works again, the rest Ts power grid period is read under the same power state, and after the corresponding bridge arm works according to the Ts power grid period, the T power grid period is carried out in a circulating mode.
When the power is below 3.3kw, only one bridge arm is enabled to operate at the same time, and each bridge arm is enabled to operate in turn. And (3) enabling the bridge arm 1 to work after current supply each time, enabling the bridge arm 2 to work after T power grid periods, enabling the bridge arm 1 to work after the T power grid periods, and sequentially circulating.
When interrupted at a certain moment, such as when the grid is out of service or is operating in other power class ranges, the remaining Ts grid cycles are recorded and flag is set as which set of bridge arms (i.e. which bridge arm is operating when interrupted). When the next time is at the grade, the mark and the remaining time are read, and the system runs out of the remaining time of the bridge arm and then performs T power grid cycle work.
When the power is 3.3kw to 6.6kw, two bridge arms are enabled to work continuously and simultaneously, and each bridge arm equally divides the total power.
According to still another aspect of the present invention, there is provided a vehicle including the control device of the above power factor correction module. The vehicle in the embodiment of the invention can realize the control method of the power factor correction module.
Compared with the prior art, the control device of the power factor correction module of the vehicle in the embodiment directly turns off the follow current switching tube in the high-frequency bridge arm module when the high-frequency bridge arm module is in the follow current stage, and conducts the current through the parasitic diode connected in parallel with the follow current switching tube. Meanwhile, each phase of high-frequency bridge arm in the high-frequency bridge arm module comprises two switching tubes connected in series, and the two switching tubes alternately serve as switching tubes for follow current. Therefore, through the control device, the switching times of all the switching tubes in the high-frequency bridge arm module are reduced, so that the switching loss is reduced, and the service life of the switching tubes is prolonged. Further, when the switching tube corresponding to the follow current switching tube in each phase of high-frequency bridge arm is alternately turned on and off, if the drive of the follow current switching tube is unstable, the drive negative voltage is punctured with a high probability, so that the follow current switching tube is damaged. However, by implementing the control device of the present application, the switching tube for discontinuous current is directly turned off, so that the problem that the switching tube for follow current is damaged due to unstable driving of the switching tube for follow current is avoided, and the use safety of the switching tube in the high-frequency bridge arm is improved.
Although the illustrative embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the foregoing illustrative embodiments are merely exemplary and are not intended to limit the scope of the invention thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention. All such changes and modifications are intended to be included within the scope of the present invention as set forth in the appended claims.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the method of the present invention should not be construed to reflect the intent: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The above description is only for the specific embodiment of the present invention or the description thereof, and the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A control method of a power factor correction module is characterized in that the control method is applied to the power factor correction module, and the power factor correction module comprises an inductance module, a high-frequency bridge arm module, a power-frequency bridge arm and a bus capacitor; the control method comprises the following steps:
when the inductance module, the high-frequency bridge arm module, the power-frequency bridge arm and the bus capacitor form a follow current circuit, a follow current switch tube in the high-frequency bridge arm module is turned off, current is conducted through a parasitic diode connected with the follow current switch tube in parallel, and the rest switch tubes in the high-frequency bridge arm module are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
2. Control method according to claim 1, characterized in that it comprises:
the high-frequency bridge arm module comprises at least one phase high-frequency bridge arm;
when the high-frequency bridge arm module is a one-phase high-frequency bridge arm, the high-frequency bridge arm comprises a first high-frequency switch assembly and a second high-frequency switch assembly, the first high-frequency switch assembly comprises a first high-frequency switch tube and a first parasitic body diode connected with the first high-frequency switch tube in parallel, and the second high-frequency switch assembly comprises a second high-frequency switch tube and a second parasitic body diode connected with the second high-frequency switch tube in parallel;
when the power grid is in a positive period, the inductance module, the first high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the first high-frequency switch tube is turned off, current is conducted through the first parasitic diode, and the second high-frequency switch tube is controlled to be turned on and off in a staggered mode to charge the bus capacitor; and
when the power grid is in a negative cycle, the inductance module, the second high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the second high-frequency switch tube is turned off, current is conducted through the second parasitic diode, and the first high-frequency switch tube is controlled to be turned on and off in a staggered mode to charge the bus capacitor.
3. The control method according to claim 2, wherein when the high-frequency bridge arm module is at least two-phase high-frequency bridge arm, each newly added high-frequency bridge arm comprises a third high-frequency switch assembly and a fourth high-frequency switch assembly, the third high-frequency switch assembly comprises a third high-frequency switch tube and a third parasitic body diode connected in parallel with the third high-frequency switch tube, and the fourth high-frequency switch assembly comprises a fourth high-frequency switch tube and a fourth parasitic body diode connected in parallel with the fourth high-frequency switch tube;
when the power grid is in a positive cycle, the inductance module, the first high-frequency switch assembly and/or the third high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the first high-frequency switch tube and/or the third high-frequency switch tube are turned off, current is conducted through the first parasitic body diode and/or the third high-frequency switch tube, and the second high-frequency switch tube and/or the fourth high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor; and
when the power grid is in a negative cycle, the inductance module, the second high-frequency switch assembly and/or the fourth high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the second high-frequency switch tube and/or the fourth high-frequency switch tube are turned off, current is conducted through the second parasitic body diode and/or the fourth high-frequency switch tube, and the first high-frequency switch tube and/or the third high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
4. The control method according to claim 3, characterized by further comprising:
determining actual charging power;
determining the number of bridge arms entering a working state in the at least two phases of high-frequency bridge arms according to a comparison result of the actual charging power and a preset power threshold; and
and after the high-frequency bridge arms with the number of the bridge arms are controlled to work for a specific time, selecting the high-frequency bridge arms with the number of the bridge arms from the rest high-frequency bridge arms to enter a working state so as to realize that the at least two high-frequency bridge arms circularly enter the working state.
5. The control method according to claim 4, wherein the specific time period is a preset time period, or the specific time period is a time period required for the temperature of the high-frequency switching tube to reach a preset temperature threshold after the high-frequency switching tube enters the working state.
6. The control method according to claim 4, characterized by further comprising:
when a charging stop instruction is received, acquiring the working time of the high-frequency bridge arms of the bridge arm number, and marking the high-frequency bridge arms;
when a charging starting instruction is received again, the marked high-frequency bridge arms are firstly controlled to enter a working state and work for a remaining time length, and then the at least two-phase high-frequency bridge arms are controlled to circularly enter a working transition state, wherein the remaining time length is the specific time length-the working time length.
7. The control method according to claim 3, wherein the step of determining the actual charging power includes:
acquiring charging box parameter information of the charging box, and determining first power according to the charging box parameter information;
acquiring power grid parameter information of the power grid, and determining second power according to the power grid parameter information;
acquiring battery parameter information of the battery, and determining a third power according to the battery parameter information; and
determining that a minimum one of the first power, the second power, and the third power is the actual charging power.
8. A control apparatus for a power factor correction module, comprising:
an inductance module;
the middle point of the high-frequency bridge arm module is connected with the first end of the inductance module;
the power frequency bridge arm is connected with the high-frequency bridge arm module in parallel, the midpoint of the power frequency bridge arm is connected with the first end of a charging port, and the second end of the charging port is connected with the second end of the inductance module;
the bus capacitor is connected with the power frequency bridge arm in parallel;
a controller connected to the high frequency bridge arm module and the power frequency bridge arm, respectively, the controller configured to: when the inductance module, the high-frequency bridge arm module, the power-frequency bridge arm and the bus capacitor form a follow current circuit, a follow current switch tube in the high-frequency bridge arm module is turned off, current is conducted through a parasitic diode connected with the follow current switch tube in parallel, and the rest switch tubes in the high-frequency bridge arm module are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
9. The control device according to claim 8, characterized in that:
the inductance module comprises a first inductance and a second inductance;
the high-frequency bridge arm module comprises a first high-frequency bridge arm and a second high-frequency bridge arm;
the first high-frequency bridge arm comprises a first high-frequency switch assembly and a second high-frequency switch assembly, the first high-frequency switch assembly comprises a first high-frequency switch tube and a first parasitic body diode connected with the first high-frequency switch tube in parallel, and the second high-frequency switch assembly comprises a second high-frequency switch tube and a second parasitic body diode connected with the second high-frequency switch tube in parallel; the second high-frequency bridge arm comprises a third high-frequency switch assembly and a fourth high-frequency switch assembly, the third high-frequency switch assembly comprises a third high-frequency switch tube and a third parasitic body diode connected with the third high-frequency switch tube in parallel, and the fourth high-frequency switch assembly comprises a fourth high-frequency switch tube and a fourth parasitic body diode connected with the fourth high-frequency switch tube in parallel;
the controller to be configured to: when the power grid is in a positive cycle, the inductance module, the first high-frequency switch assembly and/or the third high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the first high-frequency switch tube and/or the third high-frequency switch tube are turned off, current is conducted through the first parasitic body diode and/or the third high-frequency switch tube, and the second high-frequency switch tube and/or the fourth high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor; and
the controller to be configured to: when the power grid is in a negative cycle, the inductance module, the second high-frequency switch assembly and/or the fourth high-frequency switch assembly, the power frequency bridge arm and the bus capacitor form a follow current circuit, the second high-frequency switch tube and/or the fourth high-frequency switch tube are turned off, current is conducted through the second parasitic body diode and/or the fourth high-frequency switch tube, and the first high-frequency switch tube and/or the third high-frequency switch tube are controlled to be turned on and off in a staggered mode to charge the bus capacitor.
10. A vehicle characterized by comprising a control device of a power factor correction module according to claim 8 or 9.
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| CN202010786002.3A CN114070033A (en) | 2020-08-05 | 2020-08-05 | Control method and control device of power factor correction module |
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| CN202010786002.3A CN114070033A (en) | 2020-08-05 | 2020-08-05 | Control method and control device of power factor correction module |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2276157A1 (en) * | 2009-07-17 | 2011-01-19 | Huawei Technologies Co., Ltd. | Power converter, device and method for interleaving controlling power factor correction circuits |
| CN104953811A (en) * | 2014-03-24 | 2015-09-30 | 艾默生网络能源系统北美公司 | Control circuit for totem bridgeless PFC circuit |
| CN106487207A (en) * | 2015-08-31 | 2017-03-08 | 艾默生网络能源系统北美公司 | A kind of control method of power conversion circuit and device |
| CN109067212A (en) * | 2018-07-31 | 2018-12-21 | 杭州中恒电气股份有限公司 | A kind of circuit of power factor correction and its control method |
| CN109428476A (en) * | 2017-08-30 | 2019-03-05 | 中兴通讯股份有限公司 | A kind of analog control device of circuit of power factor correction |
| CN111371305A (en) * | 2018-12-25 | 2020-07-03 | 比亚迪股份有限公司 | Vehicle-mounted charger and control method and control device thereof |
| CN111376791A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪股份有限公司 | Vehicle, vehicle-mounted charger and control method thereof |
-
2020
- 2020-08-05 CN CN202010786002.3A patent/CN114070033A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2276157A1 (en) * | 2009-07-17 | 2011-01-19 | Huawei Technologies Co., Ltd. | Power converter, device and method for interleaving controlling power factor correction circuits |
| CN104953811A (en) * | 2014-03-24 | 2015-09-30 | 艾默生网络能源系统北美公司 | Control circuit for totem bridgeless PFC circuit |
| CN106487207A (en) * | 2015-08-31 | 2017-03-08 | 艾默生网络能源系统北美公司 | A kind of control method of power conversion circuit and device |
| CN109428476A (en) * | 2017-08-30 | 2019-03-05 | 中兴通讯股份有限公司 | A kind of analog control device of circuit of power factor correction |
| CN109067212A (en) * | 2018-07-31 | 2018-12-21 | 杭州中恒电气股份有限公司 | A kind of circuit of power factor correction and its control method |
| CN111371305A (en) * | 2018-12-25 | 2020-07-03 | 比亚迪股份有限公司 | Vehicle-mounted charger and control method and control device thereof |
| CN111376791A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪股份有限公司 | Vehicle, vehicle-mounted charger and control method thereof |
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