CN105591536B - interleaved PFC circuit control method and device - Google Patents
interleaved PFC circuit control method and device Download PDFInfo
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- CN105591536B CN105591536B CN201610099161.XA CN201610099161A CN105591536B CN 105591536 B CN105591536 B CN 105591536B CN 201610099161 A CN201610099161 A CN 201610099161A CN 105591536 B CN105591536 B CN 105591536B
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- phase branch
- pfc circuit
- state information
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- secondary phase
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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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
Abstract
The invention discloses a kind of interleaved PFC circuit control method and devices, wherein this method includes：In response to the pfc circuit open command of triggering, the secondary phase branch running state parameters of pfc circuit are obtained, to determine secondary phase branch work state information；The main phase branch running state parameters for obtaining pfc circuit, to determine main phase branch work state information；According to the work state information of determining secondary phase branch work state information and main phase branch, the operation of corresponding preset strategy control interleaved PFC circuit is called.The present invention solve in the prior art during interleaved PFC circuit engineering can not detection branch break down, PFC may be caused to work in abnormal problem, the stability for providing pfc circuit work further also increases the safety of application apparatus.
Description
Technical field
The present invention relates to pfc circuit control technology fields, in particular to a kind of interleaved PFC circuit control method
And device.
Background technology
The main circuit of the interleaved PFC on transducer air conditioning two-way BOOST inductive branches as shown in Figure 1, be made of at present.
Main circuit is generally divided into two phase control of major-minor, is respectively made of inductance L1, switching tube Q1, diode D1, resistance RS1 devices
Main phase and be respectively the secondary phase composition that is made of inductance L2, switching tube Q2, diode D2, resistance RS2 devices.
Two-way inductive branch can't carry out detecting work accordingly in use in existing interleaved PFC circuit
Make, detection work is typically that just can be artificially detected in specific maintenance period.However, if branch in use
Failure may also be will appear, once a certain branch breaks down, entire PFC can be made to work in abnormality, extremely influence frequency conversion
The reliability of air conditioner causes supply harmonic interference abnormal, and complete machine is susceptible to abnormal protection, influences to work normally.
For during interleaved PFC circuit engineering in the related technology can not detection branch break down, PFC may be caused
Abnormal problem is worked in, not yet proposes to efficiently solve scheme at present.
Invention content
The present invention provides a kind of interleaved PFC circuit control method and devices, at least to solve to interlock in the prior art
In formula pfc circuit engineering process can not detection branch break down, PFC may be caused to work in abnormal problem.
In order to solve the above technical problems, according to the one side of the embodiment of the present disclosure, the present invention provides a kind of alternating expressions
Pfc circuit control method, this method include：In response to the pfc circuit open command of triggering, the secondary phase branch of pfc circuit is obtained
Running state parameters, to determine secondary phase branch work state information；The main phase branch running state parameters for obtaining pfc circuit, with
Determine main phase branch work state information；Believed according to the working condition of determining secondary phase branch work state information and main phase branch
Breath calls the operation of corresponding preset strategy control interleaved PFC circuit.
Further, the secondary phase branch running state parameters for obtaining pfc circuit, to determine secondary phase branch working condition letter
Breath, including：Judge whether to meet pfc circuit unlocking condition；If satisfied, obtaining the circuit parameter before pfc circuit is opened；It opens
The secondary phase branch of pfc circuit calls the first default self-test logic to determine secondary phase branch work state information.
Further, judge whether to meet pfc circuit unlocking condition, including：Judge whether pfc circuit median generatrix voltage is small
In alternating current crest voltage；If being less than, judge whether pfc circuit open command triggers for the first time；If so, judgement meets PFC
Circuit unlocking condition.
Further, the circuit parameter before the pfc circuit unlatching of acquisition includes：Busbar voltage calls the first default self-test
Logic determines secondary phase branch work state information, including：Judge whether busbar voltage is greater than or equal to first voltage threshold value；If
It is that the first default self-test logic is called to determine secondary phase branch work state information according to the variable quantity of busbar voltage.
Further, the first default self-test logic is called to determine secondary phase branch working condition according to the variable quantity of busbar voltage
Information, including：Busbar voltage is increased, the pfc circuit output voltage values upper limit is turned up；Detection busbar electricity in first time threshold
Press whether rising value exceeds second voltage threshold value；If so, determining that pair phase branch work state information is normal, otherwise, it determines secondary
Phase branch work state information is abnormal.
Further, the circuit parameter before the pfc circuit unlatching of acquisition includes：Busbar voltage calls the first default self-test
Logic determines secondary phase branch work state information, including：Judge whether busbar voltage is greater than or equal to first voltage threshold value；If no
It is that the first default self-test logic is called to determine secondary phase branch work state information according to the current change quantity of secondary phase branch.
Further, the first default self-test logic is called to determine secondary phase branch work according to the current change quantity of secondary phase branch
Status information, including：After the secondary phase branch of pfc circuit opens second time threshold, the secondary phase in third time threshold is judged
Whether the electric current of branch is more than predetermined current threshold；If so, determine that pair phase branch work state information is normal, otherwise, it determines
Secondary phase branch work state information is abnormal.
Further, the main phase branch running state parameters for obtaining pfc circuit, to determine that main phase branch working condition is believed
Breath, including：Open the main phase branch of pfc circuit；After the 4th time threshold, the secondary phase branch of pfc circuit is closed；Call second
Default self-test logic determines main phase branch work state information.
Further, the circuit parameter before the pfc circuit unlatching of acquisition includes：Busbar voltage calls the second default self-test
Logic determines main phase branch work state information, including：After the 5th time threshold, current busbar voltage and pfc circuit are judged
The busbar voltage obtained before opening is compared, if is more than tertiary voltage threshold value；If so, determining that main phase branch work state information is
Normally, otherwise, it determines main phase branch work state information is abnormal.
Further, it according to the work state information of determining secondary phase branch work state information and main phase branch, calls
The operation of corresponding preset strategy control interleaved PFC circuit, including：Judge secondary phase branch work state information and main phase branch
Whether work state information is exception；If so, sending out PFC operation troubles information.
Further, it according to the work state information of determining secondary phase branch work state information and main phase branch, calls
The operation of corresponding preset strategy control interleaved PFC circuit, including：Judge whether secondary phase branch work state information or main phase branch
Whether the work state information on road is abnormal；If so, judging currently whether be in detection pattern, if being in detection pattern, send out
PFC operation troubles information, if being not at detection pattern, it is normal corresponding branch to open work state information, and controls PFC electricity
Road limits correction motion power when under default environmental condition.
According to the another aspect of the embodiment of the present disclosure, a kind of interleaved PFC circuit control device is provided, the device packet
It includes：First determination unit obtains the secondary phase branch operating status of pfc circuit for the pfc circuit open command in response to triggering
Parameter, to determine secondary phase branch work state information；Second determination unit, the main phase branch for obtaining pfc circuit run shape
State property, to determine main phase branch work state information；Control unit, for according to determining secondary phase branch work state information
With the work state information of main phase branch, the operation of corresponding preset strategy control interleaved PFC circuit is called.
Further, the first determination unit includes：First judgment module meets pfc circuit open strip for judging whether
Part；First acquisition module, for when the first judgment module judging result is to meet, obtaining the circuit ginseng before pfc circuit is opened
Number；First determining module, the secondary phase branch for opening pfc circuit call the first default self-test logic to determine secondary phase branch work
Make status information.
Further, the first judgment module includes：First judgment sub-unit, for judging that pfc circuit median generatrix voltage is
It is no to be less than alternating current crest voltage；Second judgment sub-unit, for the first judgment sub-unit judging result be less than when, judge
Whether pfc circuit open command triggers for the first time；Third judgment sub-unit, for being yes in the second judgment sub-unit judging result
When, judgement meets pfc circuit unlocking condition.
Further, the circuit parameter before the pfc circuit unlatching of the first acquisition module acquisition includes：Busbar voltage, first
Determining module includes：4th judgment sub-unit, for judging whether busbar voltage is greater than or equal to first voltage threshold value；First really
Stator unit, for when the 4th judgment sub-unit judging result is to be, calling the first default self-test logic according to busbar voltage
Variable quantity determine secondary phase branch work state information.
Further, the first determination subelement includes：Voltage increases submodule, and for increasing busbar voltage, PFC is turned up
The circuit output voltage value upper limit；First judging submodule, for detect in first time threshold busbar voltage rising value whether
Beyond second voltage threshold value；First determination sub-module, for when the first judging submodule is judged as YES, determining pair phase branch work
It is normal to make status information, otherwise, it determines secondary phase branch work state information is abnormal.
Further, the circuit parameter before the pfc circuit unlatching of the first acquisition module acquisition includes：Busbar voltage, first
Determining module includes：5th judgment sub-unit, for judging whether busbar voltage is greater than or equal to first voltage threshold value；Second really
Stator unit, for when the 5th judgment sub-unit judging result is not to be, calling the first default self-test logic according to secondary phase branch
The current change quantity on road determines secondary phase branch work state information.
Further, the second determination subelement includes：Second judgment submodule is opened for the secondary phase branch in pfc circuit
After opening second time threshold, judge whether the electric current of the secondary phase branch in third time threshold is more than predetermined current threshold；Second
Determination sub-module, for when second judgment submodule is judged as YES, determine pair phase branch work state information be it is normal, it is no
Then, determine that secondary phase branch work state information is abnormal.
Further, the second determination unit includes：Opening module, the main phase branch for opening pfc circuit；Close mould
Block, for after the 4th time threshold, closing the secondary phase branch of pfc circuit；Second determining module, for calling second to preset certainly
Inspection logic determines main phase branch work state information.
Further, the circuit parameter before the pfc circuit unlatching of the first acquisition module acquisition includes：Busbar voltage, second
Determining module includes：6th judgment sub-unit, for after the 5th time threshold, judging that current busbar voltage is opened with pfc circuit
The busbar voltage obtained before opening is compared, if is more than tertiary voltage threshold value；Second determination subelement, for judging that son is single the 6th
First judging result is when being, to determine that main phase branch work state information is normal, otherwise, it determines main phase branch work state information
For exception.
Further, control unit includes：Second judgment module, for judging secondary phase branch work state information and main phase
Whether the work state information of branch is exception；Fault message module, when for being in the second judgment module judging result,
Send out PFC operation troubles information.
Further, it according to the work state information of determining secondary phase branch work state information and main phase branch, calls
The operation of corresponding preset strategy control interleaved PFC circuit, including：Third judgment module, for judging whether secondary phase branch work
Whether the work state information for making status information or main phase branch is abnormal；4th judgment module, in third judgment module
Judging result is when being, whether judgement is currently in detection pattern, if being in detection pattern, sends out PFC operation troubles information, if
It is not at detection pattern, it is normal corresponding branch to open work state information, and controls pfc circuit in default environment item
When under part, correction motion power is limited.
In the present invention, increase the work state information detection of main phase branch and secondary phase branch in interleaved PFC circuit
Function in the interleaved PFC circuit course of work, obtains secondary phase branch operating status ginseng after the pfc circuit open command of triggering
Amount and main phase branch running state parameters call corresponding default after the operating status for determining main phase branch and secondary phase branch
The operation of policy control interleaved PFC circuit.The implementation of this control program can efficiently solve alternating expression in the prior art
In pfc circuit engineering process can not detection branch break down, PFC may be caused to work in abnormal problem, pfc circuit is provided
The stability of work further also increases the safety of application apparatus.
Description of the drawings
Fig. 1 is interleaved PFC circuit diagram in the prior art；
Fig. 2 is a kind of optional flow chart of the interleaved PFC circuit control method of the embodiment of the present invention；
Fig. 3 is the optional flow chart of another kind of the interleaved PFC circuit control method of the embodiment of the present invention；
Fig. 4 is another optional flow chart of the interleaved PFC circuit control method of the embodiment of the present invention；
Fig. 5 is a kind of optional structure diagram of the interleaved PFC circuit control device of the embodiment of the present invention；And
Fig. 6 is the optional structure diagram of another kind of the interleaved PFC circuit control device of the embodiment of the present invention.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
Embodiment 1
Interleaved PFC circuit control method provided by the invention is illustrated below in conjunction with the accompanying drawings.
Interleaved PFC circuit control method provided by the invention can be applied on air-conditioning equipment, for example, can be in household sky
It adjusts equipment or market to be realized on temperature control system, is also applicable on the electrical equipment that other include interleaved PFC circuit.Figure
2 show a kind of optional flow chart of this interleaved PFC circuit control method, as shown in Fig. 2, the interleaved PFC circuit control
Method includes the following steps S102-S106：
S102 obtains the secondary phase branch running state parameters of pfc circuit in response to the pfc circuit open command of triggering, with
Determine pair phase branch work state information；
The electrical equipments such as convertible frequency air-conditioner trigger pfc circuit open command in application, after meeting pfc circuit unlocking condition.
After the pfc circuit open command of triggering, secondary phase branch can be determined according to the secondary phase branch running state parameters of pfc circuit
Whether can work normally, or the state in failure.
In an optional embodiment, the secondary phase branch running state parameters of pfc circuit are obtained, to determine secondary phase branch
Following scheme may be used in road work state information：Judge whether to meet pfc circuit unlocking condition；If satisfied, obtaining PFC electricity
Circuit parameter before the unlatching of road, it is preferable that the parameter of acquisition may include the parameters such as busbar voltage.Further, it is in judgement
It is not no when meeting pfc circuit unlocking condition, can first judge pfc circuit median generatrix voltage whether be less than alternating current crest voltage (for example,
＜ 365V), if being less than alternating current crest voltage, continue to judge whether pfc circuit open command triggers for the first time, that is, will examine
Survey opportunity controls when PFC is opened for the first time, and subsequent repetition is avoided to detect.If judging, pfc circuit open command is to touch for the first time
Hair, then judgement meet pfc circuit unlocking condition.After the secondary phase branch for opening pfc circuit, call the first default self-test logic true
Fixed pair phase branch work state information.
In an optional embodiment, additionally provides above-mentioned calling first and preset the secondary phase branch work of self-test logic determination
Make status information, first voltage threshold value can be pre-set, according to the relationship of busbar voltage and first voltage threshold value, for example, by
One voltage threshold is set as 330V, when busbar voltage is greater than or equal to 330V, is being determined as high-pressure situations, conversely, being then low pressure
Situation.Branch office's high-pressure situations or low voltage situations are determined using different schemes, specific as follows：
Specifically, first judge whether busbar voltage is greater than or equal to first voltage threshold value；Whether it is more than in busbar voltage
Or when equal to first voltage threshold value, the first default self-test logic is called to determine secondary phase branch work according to the variable quantity of busbar voltage
Status information.Specifically, the first default self-test logic is being called to determine secondary phase branch work shape according to the variable quantity of busbar voltage
When state information, following scheme may be used：Busbar voltage is increased, the pfc circuit output voltage values upper limit is turned up；Detection is first
Whether busbar voltage rising value exceeds second voltage threshold value in time threshold；If so, determining that pair phase branch work state information is
Normally, otherwise, it determines secondary phase branch work state information is abnormal.Preferably, first time threshold may be configured as 6s, the second electricity
Pressure threshold value may be configured as 15V, that is to say, that when busbar voltage increases to over 15V in 6s, determine pair phase branch working condition letter
Breath is normal, otherwise, it determines secondary phase branch breaks down.
Herein it should be noted that above-mentioned first time threshold may be configured as 6s, second voltage threshold value may be configured as 15V
A kind of only preferred embodiment in actual mechanical process, can change setting, the present invention is simultaneously unlimited as the case may be
In this.
When busbar voltage is less than first voltage threshold value (that is, when busbar voltage ＜ 330V), the first default self-test is called to patrol
It collects and secondary phase branch work state information is determined according to the current change quantity of secondary phase branch.Specifically, the first default self-test is being called
When logic determines secondary phase branch work state information according to the current change quantity of secondary phase branch, following scheme may be used：In PFC
After the secondary phase branch of circuit opens second time threshold, it is pre- to judge whether the electric current of the secondary phase branch in third time threshold is more than
If current threshold；If so, determining that pair phase branch work state information is normal, otherwise, it determines secondary phase branch work state information
For exception.Preferably, above-mentioned second time threshold could be provided as 3s, and third time threshold could be provided as 1s, preset electricity
Stream threshold value could be provided as 1A, that is to say, that after the secondary phase branch of pfc circuit opens 3s, electric current is more than 1A in continuous 1s, then
Determine that pair phase branch work state information is normal, otherwise, it determines secondary phase branch breaks down.
Herein it should be noted that above-mentioned second time threshold could be provided as 3s, third time threshold can be arranged
For 1s, predetermined current threshold could be provided as 1A, only a kind of preferred embodiment, can basis in actual mechanical process
Concrete condition and change setting, the present invention is not limited thereto.
S104 obtains the main phase branch running state parameters of pfc circuit, to determine main phase branch work state information；
After the detection for completing secondary phase branch, main phase branch can be determined according to the main phase branch running state parameters of pfc circuit
Road work state information.Specifically, it can comprise the following steps：Open the main phase branch of pfc circuit；In the 4th time threshold
Afterwards, the secondary phase branch of pfc circuit is closed；The second default self-test logic is called to determine main phase branch work state information.Preferably,
The 4th above-mentioned time threshold may be configured as 3s, that is to say, that after the detection for completing secondary phase branch, open the master of pfc circuit
After phase branch 3s, the detection of main phase branch is carried out.
Specifically, it when calling the second default self-test logic to determine main phase branch work state information, can be used as follows
Preferred scheme：After the 5th time threshold, the busbar voltage phase obtained before current busbar voltage is opened with pfc circuit is judged
Than, if it is more than tertiary voltage threshold value；If so, determining that main phase branch work state information is normal, otherwise, it determines main phase branch
Work state information is abnormal.Preferably, above-mentioned 5th time threshold can be 3s, and tertiary voltage threshold value could be provided as 15V,
That is, after 3s, current busbar voltage is more than (or being equal to) compared with the busbar voltage obtained before pfc circuit is opened
15V is to determine that main phase branch work state information is normal, otherwise, it determines main phase branch breaks down.
S106 is called and is corresponded to according to the work state information of determining secondary phase branch work state information and main phase branch
Preset strategy controls the operation of interleaved PFC circuit.
After determining the working condition of secondary phase branch and main phase branch respectively, it can be adjusted according to its actual working condition
The operation for controlling interleaved PFC circuit with corresponding preset strategy specifically may include steps of：Judge secondary phase branch
Whether the work state information of work state information and main phase branch is exception；If secondary phase branch work state information and main phase
The work state information of branch is abnormality, can control and send out PFC operation troubles information, be reminded.If secondary phase branch
Whether the work state information of road work state information or main phase branch is abnormal, that is, in secondary phase branch and main phase branch wherein
A branch be abnormality, can determine whether it is current whether be in detection pattern, if under detection pattern, PFC can be sent out
Operation troubles information, as prompting.If being not at detection pattern, it is normal corresponding branch to open work state information, and is controlled
Pfc circuit processed limits correction motion power when under default environmental condition.It, can be in high temperature, high pressure etc. when specific implementation
Operation power is corrected in limitation to a certain degree when maximum conditions, for example, limitation running frequency, reduces power.
In the preferred embodiment of above-mentioned offer, increase main phase branch and secondary phase branch in interleaved PFC circuit
Work state information detection function, after the pfc circuit open command of triggering, in the interleaved PFC circuit course of work, obtain
Secondary phase branch running state parameters and main phase branch running state parameters, in the operation shape for determining main phase branch and secondary phase branch
After state, the operation of corresponding preset strategy control interleaved PFC circuit is called.The implementation of this control program can efficiently solve
In the prior art during interleaved PFC circuit engineering can not detection branch break down, PFC may be caused to work in abnormal
Problem, the stability for providing pfc circuit work further also increase the safety of application apparatus.
Embodiment 2
Based on the interleaved PFC circuit control method provided in above-described embodiment 1, optional embodiment 2 of the present invention also carries
A kind of specific implementation of this method is supplied, specifically, Fig. 3 shows to detect in the interleaved PFC circuit control method every
The whether faulty flow diagram of PFC branches all the way, as shown in figure 3, this method comprises the following steps：
S20, monitoring, which is known, meets PFC unlocking conditions, can trigger pfc circuit open command；
S21, whether detection busbar voltage is excessively high and whether PFC opened；
Control detection process is to be opened for the first time in powering on PFC, also, executed when busbar voltage non-excessively high (≤365V).
S22, the busbar voltage before record PFC unlatchings, opens secondary phase PFC branches, executes secondary phase PFC branch self-test logics；
S23, judges whether busbar voltage is greater than or equal to 330V, if so, executing step S24, otherwise, executes step S25；
S24 judges whether that raising >=15V in busbar voltage 6s can be achieved, if so, otherwise executing step S26 executes step
Rapid S27；
S25 judges whether electric current is more than 1A in continuous 1s after 3s, if so, executing step S26, otherwise, executes step S28；
S26 judges that secondary phase PFC branches are normal；
S27 judges secondary phase PFC branch troubles；
Secondary phase PFC branch troubles are reported after S28,6s；
S29 closes secondary phase PFC after opening main phase PFC, 3s, starts to execute main phase PFC branch self-test logics；
Whether S30 judges before busbar voltage ratio PFC is opened after 3s than or equal to 15V, if so, execution step S31,
Otherwise, step S32 is executed；
S31, judgement main phase PFC branches are normal；
Main phase PFC branch troubles are reported after S32,7s；
S33 executes corresponding PFC and opens strategy according to self-detection result
When PFC self-tests at after, execute corresponding PFC and open control strategy.For details, reference can be made to the flow charts shown in Fig. 4, such as Fig. 4
It is shown, if two-way PFC branches are all faulty, directly stop failure machine report；If only main phase or secondary phase pfc circuit failure, inspection
It tests under state and reports disorderly closedown, another branch is opened if normal operating condition, limitation is repaiied to a certain degree in maximum conditions
Positive operation power, and more preferably radiating control is taken according to operating condition, ensure air conditioner normal operation.
Embodiment 3
Based on the interleaved PFC circuit control method provided in above-described embodiment 1, optional embodiment 3 of the present invention also carries
A kind of interleaved PFC circuit control device is supplied, specifically, Fig. 5 shows that one kind of the interleaved PFC circuit control device can
The structure diagram of choosing, as shown in figure 5, the device includes：First determination unit 50 is opened for the pfc circuit in response to triggering
Instruction, obtains the secondary phase branch running state parameters of pfc circuit, to determine secondary phase branch work state information；Second determines list
Member 60, the main phase branch running state parameters for obtaining pfc circuit, to determine main phase branch work state information；Control is single
Member 70 is called corresponding default for the work state information according to determining secondary phase branch work state information and main phase branch
The operation of policy control interleaved PFC circuit.
Further, as shown in fig. 6, the first determination unit 50 includes：First judgment module 51, meets for judging whether
Pfc circuit unlocking condition；First acquisition module 52, for when the first judgment module judging result is to meet, obtaining pfc circuit
Circuit parameter before unlatching；First determining module 53, the secondary phase branch for opening pfc circuit call the first default self-test to patrol
It collects and determines secondary phase branch work state information.
Further, the first judgment module includes：First judgment sub-unit, for judging that pfc circuit median generatrix voltage is
It is no to be less than alternating current crest voltage；Second judgment sub-unit, for the first judgment sub-unit judging result be less than when, judge
Whether pfc circuit open command triggers for the first time；Third judgment sub-unit, for being yes in the second judgment sub-unit judging result
When, judgement meets pfc circuit unlocking condition.
Further, the circuit parameter before the pfc circuit unlatching of the first acquisition module acquisition includes：Busbar voltage, first
Determining module includes：4th judgment sub-unit, for judging whether busbar voltage is greater than or equal to first voltage threshold value；First really
Stator unit, for when the 4th judgment sub-unit judging result is to be, calling the first default self-test logic according to busbar voltage
Variable quantity determine secondary phase branch work state information.
Further, the first determination subelement includes：Voltage increases submodule, and for increasing busbar voltage, PFC is turned up
The circuit output voltage value upper limit；First judging submodule, for detect in first time threshold busbar voltage rising value whether
Beyond second voltage threshold value；First determination sub-module, for when the first judging submodule is judged as YES, determining pair phase branch work
It is normal to make status information, otherwise, it determines secondary phase branch work state information is abnormal.
Further, the circuit parameter before the pfc circuit unlatching of the first acquisition module acquisition includes：Busbar voltage, first
Determining module includes：5th judgment sub-unit, for judging whether busbar voltage is greater than or equal to first voltage threshold value；Second really
Stator unit, for when the 5th judgment sub-unit judging result is not to be, calling the first default self-test logic according to secondary phase branch
The current change quantity on road determines secondary phase branch work state information.
Further, the second determination subelement includes：Second judgment submodule is opened for the secondary phase branch in pfc circuit
After opening second time threshold, judge whether the electric current of the secondary phase branch in third time threshold is more than predetermined current threshold；Second
Determination sub-module, for when second judgment submodule is judged as YES, determine pair phase branch work state information be it is normal, it is no
Then, determine that secondary phase branch work state information is abnormal.
Further, as shown in fig. 6, the second determination unit 60 includes：Opening module 61, the master for opening pfc circuit
Phase branch；Closedown module 62, for after the 4th time threshold, closing the secondary phase branch of pfc circuit；Second determining module 63,
For calling the second default self-test logic to determine main phase branch work state information.
Further, the circuit parameter before the pfc circuit unlatching of the first acquisition module acquisition includes：Busbar voltage, second
Determining module includes：6th judgment sub-unit, for after the 5th time threshold, judging that current busbar voltage is opened with pfc circuit
The busbar voltage obtained before opening is compared, if is more than tertiary voltage threshold value；Second determination subelement, for judging that son is single the 6th
First judging result is when being, to determine that main phase branch work state information is normal, otherwise, it determines main phase branch work state information
For exception.
Further, control unit includes：Second judgment module, for judging secondary phase branch work state information and main phase
Whether the work state information of branch is exception；Fault message module, when for being in the second judgment module judging result,
Send out PFC operation troubles information.
Further, it according to the work state information of determining secondary phase branch work state information and main phase branch, calls
The operation of corresponding preset strategy control interleaved PFC circuit, including：Third judgment module, for judging whether secondary phase branch work
Whether the work state information for making status information or main phase branch is abnormal；4th judgment module, in third judgment module
Judging result is when being, whether judgement is currently in detection pattern, if being in detection pattern, sends out PFC operation troubles information, if
It is not at detection pattern, it is normal corresponding branch to open work state information, and controls pfc circuit in default environment item
When under part, correction motion power is limited.
About the device in above-described embodiment, wherein each unit, module executes the concrete mode of operation related
It is described in detail in the embodiment of this method, explanation will be not set forth in detail herein.
In the present invention, increase the work state information detection of main phase branch and secondary phase branch in interleaved PFC circuit
Function in the interleaved PFC circuit course of work, obtains secondary phase branch operating status ginseng after the pfc circuit open command of triggering
Amount and main phase branch running state parameters call corresponding default after the operating status for determining main phase branch and secondary phase branch
The operation of policy control interleaved PFC circuit.The implementation of this control program can efficiently solve alternating expression in the prior art
In pfc circuit engineering process can not detection branch break down, PFC may be caused to work in abnormal problem, pfc circuit is provided
The stability of work further also increases the safety of application apparatus.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the present invention
Its embodiment.This application is intended to cover the present invention any variations, uses, or adaptations, these modifications, purposes or
Person's adaptive change follows the general principle of the present invention and includes the common knowledge in the art that the present invention does not invent
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the invention is not limited in the precision architectures for being described above and being shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (18)
1. a kind of interleaved PFC circuit control method, which is characterized in that including：
In response to the pfc circuit open command of triggering, the secondary phase branch running state parameters of the pfc circuit are obtained, with determination
The pair phase branch work state information；
The main phase branch running state parameters for obtaining the pfc circuit, with the determination main phase branch work state information；
According to the work state information of determining secondary the phase branch work state information and the main phase branch, call corresponding pre-
If the operation of interleaved PFC circuit described in policy control；
The secondary phase branch running state parameters for obtaining the pfc circuit, with the determination secondary phase branch work state information,
Including：
Judge whether to meet the pfc circuit unlocking condition；
If satisfied, obtaining the circuit parameter before the pfc circuit is opened；
The secondary phase branch of the pfc circuit is opened, the first default self-test logic is called to determine the secondary phase branch working condition letter
Breath；
It is described to judge whether to meet the pfc circuit unlocking condition, including：
Judge whether the pfc circuit median generatrix voltage is less than alternating current crest voltage；
If being less than, judge whether pfc circuit open command triggers for the first time；
If so, judgement meets the pfc circuit unlocking condition.
2. according to the method described in claim 1, it is characterized in that, obtain the pfc circuit open before circuit parameter packet
It includes：Busbar voltage, the first default self-test logic of the calling determine the secondary phase branch work state information, including：
Judge whether the busbar voltage is greater than or equal to first voltage threshold value；
If so, the first default self-test logic is called to determine the secondary phase branch work according to the variable quantity of the busbar voltage
Status information.
3. according to the method described in claim 2, it is characterized in that, described call the first default self-test logic according to
The variable quantity of busbar voltage determines the secondary phase branch work state information, including：
The busbar voltage is increased, the pfc circuit output voltage values upper limit is turned up；
Whether detection busbar voltage rising value in first time threshold exceeds second voltage threshold value；
If so, determining that the secondary phase branch work state information is normal, otherwise, it determines the pair phase branch work state information
For exception.
4. according to the method described in claim 1, it is characterized in that, obtain the pfc circuit open before circuit parameter packet
It includes：Busbar voltage, the first default self-test logic of the calling determine the secondary phase branch work state information, including：
Judge whether the busbar voltage is greater than or equal to first voltage threshold value；
If it is not, the first default self-test logic is called to determine the secondary phase branch according to the current change quantity of the secondary phase branch
Road work state information.
5. according to the method described in claim 4, it is characterized in that, described call the first default self-test logic according to
The current change quantity of secondary phase branch determines the secondary phase branch work state information, including：
After the secondary phase branch of the pfc circuit opens second time threshold, the pair phase branch in third time threshold is judged
Whether the electric current on road is more than predetermined current threshold；
If so, determining that the secondary phase branch work state information is normal, otherwise, it determines the pair phase branch work state information
For exception.
6. according to the method described in claim 1, it is characterized in that, the main phase branch for obtaining the pfc circuit runs shape
State property, with the determination main phase branch work state information, including：
Open the main phase branch of the pfc circuit；
After the 4th time threshold, the secondary phase branch of the pfc circuit is closed；
The second default self-test logic is called to determine the main phase branch work state information.
7. according to the method described in claim 6, it is characterized in that, obtain the pfc circuit open before circuit parameter packet
It includes：Busbar voltage, the second default self-test logic of the calling determine the main phase branch work state information, including：
After the 5th time threshold, judge that current busbar voltage compared with the busbar voltage obtained before the pfc circuit is opened, is
No is more than tertiary voltage threshold value；
If so, determining that the main phase branch work state information is normal, otherwise, it determines the main phase branch work state information
For exception.
8. according to the method described in claim 1, it is characterized in that, described according to the determining secondary phase branch working condition letter
The work state information of breath and the main phase branch calls corresponding preset strategy to control the operation of the interleaved PFC circuit, packet
It includes：
Judge whether the work state information of the secondary phase branch work state information and the main phase branch is exception；
If so, sending out PFC operation troubles information.
9. according to the method described in claim 1, it is characterized in that, described according to the determining secondary phase branch working condition letter
The work state information of breath and the main phase branch calls corresponding preset strategy to control the operation of the interleaved PFC circuit, packet
It includes：
Judge whether the work state information of the secondary phase branch work state information or the main phase branch is abnormal；
If so, judging currently whether be in detection pattern, if being in detection pattern, PFC operation troubles information is sent out, if being not at
Detection pattern, it is normal corresponding branch to open work state information, and controls the pfc circuit in default environmental condition
When lower, correction motion power is limited.
10. a kind of interleaved PFC circuit control device, which is characterized in that including：
First determination unit obtains the secondary phase branch fortune of the pfc circuit for the pfc circuit open command in response to triggering
Row state parameter, with the determination secondary phase branch work state information；
Second determination unit, the main phase branch running state parameters for obtaining the pfc circuit, with the determination main phase branch
Work state information；
Control unit, for being believed according to the working condition of the determining secondary phase branch work state information and the main phase branch
Breath calls corresponding preset strategy to control the operation of the interleaved PFC circuit；
First determination unit includes：
First judgment module meets the pfc circuit unlocking condition for judging whether；
First acquisition module, for when the first judgment module judging result is to meet, obtaining the electricity before the pfc circuit is opened
Road parameter；
First determining module, the secondary phase branch for opening the pfc circuit call the first default self-test logic to determine the pair
Phase branch work state information；
First judgment module includes：
First judgment sub-unit, for judging whether the pfc circuit median generatrix voltage is less than alternating current crest voltage；
Second judgment sub-unit, for the first judgment sub-unit judging result be less than when, judge pfc circuit unlatching refer to
It enables and triggering whether for the first time；
Third judgment sub-unit, for when the second judgment sub-unit judging result is to be, judgement to meet the pfc circuit
Unlocking condition.
11. device according to claim 10, which is characterized in that the pfc circuit that first acquisition module obtains
Circuit parameter before unlatching includes：Busbar voltage, first determining module include：
4th judgment sub-unit, for judging whether the busbar voltage is greater than or equal to first voltage threshold value；
First determination subelement, for when the 4th judgment sub-unit judging result is to be, calling described first to preset certainly
Inspection logic determines the secondary phase branch work state information according to the variable quantity of the busbar voltage.
12. according to the devices described in claim 11, which is characterized in that first determination subelement includes：
Voltage increases submodule, and for increasing the busbar voltage, the pfc circuit output voltage values upper limit is turned up；
First judging submodule, for detecting whether the busbar voltage rising value in first time threshold exceeds second voltage
Threshold value；
First determination sub-module, for when first judging submodule is judged as YES, determining the secondary phase branch work shape
State information is normal, otherwise, it determines the pair phase branch work state information is abnormal.
13. device according to claim 10, which is characterized in that the pfc circuit that first acquisition module obtains
Circuit parameter before unlatching includes：Busbar voltage, first determining module include：
5th judgment sub-unit, for judging whether the busbar voltage is greater than or equal to first voltage threshold value；
Second determination subelement, for when the 5th judgment sub-unit judging result is not to be, calling described first to preset
Self-test logic determines the secondary phase branch work state information according to the current change quantity of the secondary phase branch.
14. device according to claim 13, which is characterized in that second determination subelement includes：
Second judgment submodule, for after the secondary phase branch of the pfc circuit opens second time threshold, judging in third
Between in threshold value the electric current of the secondary phase branch whether be more than predetermined current threshold；
Second determination sub-module, for when the second judgment submodule is judged as YES, determining the secondary phase branch work shape
State information is normal, otherwise, it determines the pair phase branch work state information is abnormal.
15. device according to claim 10, which is characterized in that second determination unit includes：
Opening module, the main phase branch for opening the pfc circuit；
Closedown module, for after the 4th time threshold, closing the secondary phase branch of the pfc circuit；
Second determining module, for calling the second default self-test logic to determine the main phase branch work state information.
16. device according to claim 15, which is characterized in that the pfc circuit that first acquisition module obtains
Circuit parameter before unlatching includes：Busbar voltage, second determining module include：
6th judgment sub-unit is obtained for after the 5th time threshold, judging before current busbar voltage is opened with the pfc circuit
The busbar voltage taken is compared, if is more than tertiary voltage threshold value；
Second determination subelement, for when the 6th judgment sub-unit judging result is to be, determining the main phase branch work
It is normal to make status information, otherwise, it determines the main phase branch work state information is abnormal.
17. device according to claim 10, which is characterized in that described control unit includes：
Second judgment module, the work state information for judging secondary the phase branch work state information and the main phase branch
Whether it is exception；
Fault message module, for when the second judgment module judging result is to be, sending out PFC operation troubles information.
18. device according to claim 10, which is characterized in that described according to the determining secondary phase branch working condition
The work state information of information and the main phase branch calls corresponding preset strategy to control the operation of the interleaved PFC circuit,
Including：
Third judgment module, the working condition for judging whether the secondary phase branch work state information or the main phase branch
Whether information is abnormal；
4th judgment module, it is current whether in detection mould for when the third judgment module judging result is to be, judging
Formula sends out PFC operation troubles information if being in detection pattern, if being not at detection pattern, it is normal to open work state information
Corresponding branch, and the pfc circuit is controlled when under default environmental condition, limit correction motion power.
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| CN108089111A (en) * | 2017-11-06 | 2018-05-29 | 珠海格力电器股份有限公司 | Interleaved PFC fault detection method and device |
| CN108254675A (en) * | 2018-03-14 | 2018-07-06 | 奥克斯空调股份有限公司 | Pfc circuit failure detector, method and convertible frequency air-conditioner |
| CN111337815A (en) * | 2018-12-19 | 2020-06-26 | 比亚迪股份有限公司 | Electric automobile, vehicle-mounted charger and fault detection method and device thereof |
| CN111376791B (en) * | 2018-12-29 | 2022-02-08 | 比亚迪股份有限公司 | Vehicle, vehicle-mounted charger and control method thereof |
| CN113394963B (en) * | 2020-03-11 | 2023-11-10 | 上海海立（集团）股份有限公司 | PFC circuit detection method and device and readable storage medium |
| CN114362562A (en) * | 2021-11-24 | 2022-04-15 | 漳州科华技术有限责任公司 | Control method of three-phase PFC circuit, terminal and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203104280U (en) * | 2013-01-04 | 2013-07-31 | 广东美的制冷设备有限公司 | Interleaving PFC circuit and air conditioner |
| US8810230B2 (en) * | 2010-04-19 | 2014-08-19 | Renesas Electronics Corporation | Power supply device and semiconductor device |
| CN204013207U (en) * | 2014-07-23 | 2014-12-10 | 珠海格力电器股份有限公司 | Two-way interleaved PFC current balance circuit and air conditioner |
| CN104600973A (en) * | 2014-12-31 | 2015-05-06 | 广东美的制冷设备有限公司 | Control method and device for staggered PFC (positive feedback circuit) of air conditioner |
| CN105091252A (en) * | 2015-09-23 | 2015-11-25 | 广东美的制冷设备有限公司 | Control method and system of PFC circuit in air conditioner and air conditioner |
-
2016
- 2016-02-23 CN CN201610099161.XA patent/CN105591536B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8810230B2 (en) * | 2010-04-19 | 2014-08-19 | Renesas Electronics Corporation | Power supply device and semiconductor device |
| CN203104280U (en) * | 2013-01-04 | 2013-07-31 | 广东美的制冷设备有限公司 | Interleaving PFC circuit and air conditioner |
| CN204013207U (en) * | 2014-07-23 | 2014-12-10 | 珠海格力电器股份有限公司 | Two-way interleaved PFC current balance circuit and air conditioner |
| CN104600973A (en) * | 2014-12-31 | 2015-05-06 | 广东美的制冷设备有限公司 | Control method and device for staggered PFC (positive feedback circuit) of air conditioner |
| CN105091252A (en) * | 2015-09-23 | 2015-11-25 | 广东美的制冷设备有限公司 | Control method and system of PFC circuit in air conditioner and air conditioner |
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