CN106849692A - A kind of control method and device of multistate switch totem-pote circuit - Google Patents
A kind of control method and device of multistate switch totem-pote circuit Download PDFInfo
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- CN106849692A CN106849692A CN201510886331.4A CN201510886331A CN106849692A CN 106849692 A CN106849692 A CN 106849692A CN 201510886331 A CN201510886331 A CN 201510886331A CN 106849692 A CN106849692 A CN 106849692A
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
The invention discloses a kind of control method and device of multistate switch totem-pote circuit, can realize that the no-voltage of high frequency bridge arm switch pipe is open-minded, reduce the switching frequency of high frequency bridge arm, improve the utilization rate of magnetic element, reduce circuit loss, improve circuit efficiency.The control method includes：For the winding of each the high frequency bridge arm connection in multistate switch totem-pote circuit, the electric current of the winding is obtained；It is positive voltage in the AC terminal voltage of multistate switch totem-pote circuit, continued flow switch pipe on the high frequency bridge arm of winding connection is in the conduction state, when main switch is off state, if the electric current for getting the winding is not up to default negative current, the continued flow switch pipe for controlling this in the conduction state keeps conducting state, the main switch for being off state and remains turned off；If the electric current for getting the winding reaches default negative current, control the continued flow switch pipe in the conduction state to turn off, this be off state main switch conducting.
Description
Technical field
The present invention relates to electric and electronic technical field, more particularly to a kind of control of multistate switch totem-pote circuit
Method and device.
Background technology
Fig. 1~Fig. 5 show multistate switch totem-pote circuit several frequently seen at present, can specifically use transformation
Device is realized, it would however also be possible to employ coupling inductance is realized；Can be specifically input, direct current wiring with AC terminal
End is output end, it is also possible to which direct current terminals are that input, AC terminal are output ends；When exchange wiring
When end is input, can be by AC terminal input AC electricity, it is also possible to by the AC terminal
Input dc power.
In the prior art, a kind of more conventional control method of multistate switch totem-pote circuit is CRM
(Critical Conduction Mode, critical conduction mode) is controlled.However, CRM controls are in circuit
AC terminal instantaneous voltage can be realized being opened on high frequency bridge arm when being less than the half of direct current terminal voltage
The no-voltage for closing pipe is open-minded, but in half of the AC terminal instantaneous voltage more than direct current terminal voltage
Can not realize that the no-voltage of switching tube on high frequency bridge arm is open-minded, cause circuit loss larger.
The content of the invention
The embodiment of the present invention provides a kind of control method and device of multistate switch totem-pote circuit, is used to solve
Switching tube present in prior art on high frequency bridge arm cannot realize the problem that no-voltage is opened, and can
The switching frequency of high frequency bridge arm is reduced, the utilization rate of magnetic element is improved, reduces circuit loss, improve efficiency.
A kind of control method of multistate switch totem-pote circuit is the embodiment of the invention provides, including：
For the winding of each the high frequency bridge arm connection in multistate switch totem-pote circuit, the electricity of the winding is obtained
Stream；
It is positive voltage, the high frequency bridge of winding connection in the AC terminal voltage of multistate switch totem-pote circuit
When continued flow switch pipe on arm is in the conduction state, main switch is off state, if getting the winding
Electric current be not up to default negative current, then the continued flow switch pipe for controlling this in the conduction state keeps leads
Logical state, the main switch for being off state are remained turned off；If getting the electricity of the winding
Stream reaches default negative current, then control that the continued flow switch pipe in the conduction state is turned off, this is off
The main switch conducting of state.
Wherein, the electric current of the winding is obtained, is specifically included：
The electric current of the direct detection winding；Or
Detect the winding connection high frequency bridge arm on continued flow switch pipe, the electric current of main switch, by this around
Continued flow switch pipe, the electric current of main switch on the high frequency bridge arm of group connection determine the electric current of the winding.
Specifically, the winding is specially Transformer Winding, or it is coupling inductance winding.
A kind of control method of multistate switch totem-pote circuit is the embodiment of the invention provides, including：
For the winding of each the high frequency bridge arm connection in multistate switch totem-pote circuit, the electricity of the winding is obtained
Stream；
It is negative voltage, the high frequency bridge of winding connection in the AC terminal voltage of multistate switch totem-pote circuit
When continued flow switch pipe on arm is in the conduction state, main switch is off state, if getting the winding
Electric current be not up to pre-set forward electric current, then the continued flow switch pipe for controlling this in the conduction state keeps leads
Logical state, the main switch for being off state are remained turned off；If getting the electricity of the winding
Stream reaches pre-set forward electric current, then control that the continued flow switch pipe in the conduction state is turned off, this is off
The main switch conducting of state.
Wherein, the electric current of the winding is obtained, is specifically included：
The electric current of the direct detection winding；Or
Detect the winding connection high frequency bridge arm on continued flow switch pipe, the electric current of main switch, by this around
Continued flow switch pipe, the electric current of main switch on the high frequency bridge arm of group connection determine the electric current of the winding.
Specifically, the winding is specially Transformer Winding, or it is coupling inductance winding.
The embodiment of the present invention additionally provides a kind of control device of multistate switch totem-pote circuit, including：
Acquiring unit, for the winding for each the high frequency bridge arm connection in multistate switch totem-pote circuit,
Obtain the electric current of the winding；
Control unit, for being positive voltage in the AC terminal voltage of multistate switch totem-pote circuit, should be around
Continued flow switch pipe on the high frequency bridge arm of group connection is in the conduction state, when main switch is off state,
If the electric current for getting the winding is not up to default negative current, the afterflow for controlling this in the conduction state is opened
Pass pipe keeps conducting state, the main switch for being off state and remains turned off；If obtaining
The electric current for getting the winding reaches default negative current, then control the continued flow switch pipe in the conduction state to close
The main switch conducting disconnected, this is off state.
Wherein, the acquiring unit, specifically for the electric current of the direct detection winding；Or detect the winding
Continued flow switch pipe, the electric current of main switch on the high frequency bridge arm of connection, the high frequency bridge connected by the winding
Continued flow switch pipe, the electric current of main switch on arm determine the electric current of the winding.
Specifically, the winding is specially Transformer Winding, or it is coupling inductance winding.
The embodiment of the present invention additionally provides a kind of control device of multistate switch totem-pote circuit, including：
Acquiring unit, for the winding for each the high frequency bridge arm connection in multistate switch totem-pote circuit,
Obtain the electric current of the winding；
Control unit, for being negative voltage in the AC terminal voltage of multistate switch totem-pote circuit, should be around
Continued flow switch pipe on the high frequency bridge arm of group connection is in the conduction state, when main switch is off state,
If getting the electric current not up to pre-set forward electric current of the winding, the afterflow for controlling this in the conduction state is opened
Pass pipe keeps conducting state, the main switch for being off state and remains turned off；If obtaining
The electric current for getting the winding reaches pre-set forward electric current, then control the continued flow switch pipe in the conduction state to close
The main switch conducting disconnected, this is off state.
Wherein, the acquiring unit, specifically for the electric current of the direct detection winding；Or detect the winding
Continued flow switch pipe, the electric current of main switch on the high frequency bridge arm of connection, the high frequency bridge connected by the winding
Continued flow switch pipe, the electric current of main switch on arm determine the electric current of the winding.
Specifically, the winding is specially Transformer Winding, or it is coupling inductance winding.
In scheme provided in an embodiment of the present invention, continued flow switch pipe on high frequency bridge arm is in the conduction state,
When main switch is off state, control continued flow switch pipe and main switch keep current state until electric current is anti-
Xiang Shi, just controls the shut-off of continued flow switch pipe, main switch conducting, due to the presence of the reverse current, can be with
Realize that the no-voltage of main switch and continued flow switch pipe is open-minded, that is, realize the no-voltage of high frequency bridge arm switch pipe
It is open-minded.Also, due to the presence of the element winding that is magnetic, in the mistake that a high frequency bridge arm main switch is opened
Cheng Zhong, can be by the coupling of winding, the energy transmission that will be input into output end so that the biography of circuit
Energy efficiency is doubled, so the switching frequency of high frequency bridge arm can be reduced, improves the utilization of magnetic element
Rate, improves the efficiency of circuit.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, with this hair
Bright embodiment is used to explain the present invention together, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is one of structural representation of multistate switch totem-pote circuit；
Fig. 2 is the two of the structural representation of multistate switch totem-pote circuit；
Fig. 3 is the three of the structural representation of multistate switch totem-pote circuit；
Fig. 4 is the four of the structural representation of multistate switch totem-pote circuit；
Fig. 5 is the five of the structural representation of multistate switch totem-pote circuit；
Fig. 6 is the schematic flow sheet of the control method of multistate switch totem-pote circuit provided in an embodiment of the present invention
One of；
Fig. 7 is the schematic flow sheet of the control method of multistate switch totem-pote circuit provided in an embodiment of the present invention
Two；
Fig. 8 is the high frequency bridge arm switch pipe in the multistate switch totem-pote circuit that the embodiment of the present invention 1 is provided
Drive signal schematic diagram；
Fig. 9 (a) is the working state schematic representation of the multistate switch totem-pote circuit that the embodiment of the present invention 1 is provided
One of；
Fig. 9 (b) is the working state schematic representation of the multistate switch totem-pote circuit that the embodiment of the present invention 1 is provided
Two；
Fig. 9 (c) is the working state schematic representation of the multistate switch totem-pote circuit that the embodiment of the present invention 1 is provided
Three；
Fig. 9 (d) is the working state schematic representation of the multistate switch totem-pote circuit that the embodiment of the present invention 1 is provided
Four；
Fig. 9 (e) is the working state schematic representation of the multistate switch totem-pote circuit that the embodiment of the present invention 1 is provided
Five；
Fig. 9 (f) is the working state schematic representation of the multistate switch totem-pote circuit that the embodiment of the present invention 1 is provided
Six；
Figure 10 is the high frequency bridge arm switch pipe in the multistate switch totem-pote circuit that the embodiment of the present invention 2 is provided
Drive signal schematic diagram；
Figure 11 (a) is that the working condition of the multistate switch totem-pote circuit that the embodiment of the present invention 2 is provided is illustrated
One of figure；
Figure 11 (b) is that the working condition of the multistate switch totem-pote circuit that the embodiment of the present invention 2 is provided is illustrated
The two of figure；
Figure 11 (c) is that the working condition of the multistate switch totem-pote circuit that the embodiment of the present invention 2 is provided is illustrated
The three of figure；
Figure 11 (d) is that the working condition of the multistate switch totem-pote circuit that the embodiment of the present invention 2 is provided is illustrated
The four of figure；
Figure 11 (e) is that the working condition of the multistate switch totem-pote circuit that the embodiment of the present invention 2 is provided is illustrated
The five of figure；
Figure 11 (f) is that the working condition of the multistate switch totem-pote circuit that the embodiment of the present invention 2 is provided is illustrated
The six of figure；
Figure 12 is the structural representation of the control device of multistate switch totem-pote circuit provided in an embodiment of the present invention
One of figure；
Figure 13 is the structural representation of the control device of multistate switch totem-pote circuit provided in an embodiment of the present invention
The two of figure.
Specific embodiment
For the realization side that the high frequency bridge arm switch pipe no-voltage be given in multistate switch totem-pote circuit is opened
Case, the embodiment of the invention provides a kind of control method and device of multistate switch totem-pote circuit, with reference to saying
Bright book accompanying drawing is illustrated to the preferred embodiments of the present invention, it will be appreciated that described herein to be preferable to carry out
Example is merely to illustrate and explain the present invention, and is not intended to limit the present invention.And in the case where not conflicting,
The feature in embodiment and embodiment in the application can be mutually combined.
A kind of control method of multistate switch totem-pote circuit is the embodiment of the invention provides, as shown in fig. 6,
May include steps of：
Step 601, the winding for each the high frequency bridge arm connection in multistate switch totem-pote circuit, obtain
The electric current of the winding；
Step 602, multistate switch totem-pote circuit AC terminal voltage be positive voltage, the winding connect
When the continued flow switch pipe on high frequency bridge arm that connects is in the conduction state, main switch is off state, if obtaining
The electric current for getting the winding is not up to default negative current, then control the continued flow switch pipe in the conduction state
Conducting state, the main switch for being off state is kept to remain turned off；If getting
The electric current of the winding reaches default negative current, then control the continued flow switch pipe in the conduction state to turn off,
This is off the main switch conducting of state.
Wherein, default negative current can be fixed value, or changing value, specifically can be according to reality
Application scenarios are specifically set.
In one particular embodiment of the present invention, the electric current of the winding is obtained in step 601, can be direct
Detect the electric current of the winding；In another specific embodiment of the invention, it is also possible to detect that the winding is connected
High frequency bridge arm on continued flow switch pipe, the electric current of main switch, by the high frequency bridge arm that the winding is connected
Continued flow switch pipe, the electric current of main switch determine the electric current of the winding；In other specific implementations of the invention
In example, it is also possible to by detecting other parameters of circuit, the electric current of the winding is determined by calculating, herein not
Illustrate again.
Accordingly, the embodiment of the present invention additionally provides a kind of control method of multistate switch totem-pote circuit, such as
Shown in Fig. 7, may include steps of：
Step 701, the winding for each the high frequency bridge arm connection in multistate switch totem-pote circuit, obtain
The electric current of the winding；
Step 702, multistate switch totem-pote circuit AC terminal voltage be negative voltage, the winding connect
When the continued flow switch pipe on high frequency bridge arm that connects is in the conduction state, main switch is off state, if obtaining
The electric current not up to pre-set forward electric current of the winding is got, then controls the continued flow switch pipe in the conduction state
Conducting state, the main switch for being off state is kept to remain turned off；If getting
The electric current of the winding reaches pre-set forward electric current, then control the continued flow switch pipe in the conduction state to turn off,
This is off the main switch conducting of state.
Wherein, pre-set forward electric current can be fixed value, or changing value, specifically can be according to reality
Application scenarios are specifically set.
In one particular embodiment of the present invention, the electric current of the winding is obtained in step 701, can be direct
Detect the electric current of the winding；In another specific embodiment of the invention, it is also possible to detect that the winding is connected
High frequency bridge arm on continued flow switch pipe, the electric current of main switch, by the high frequency bridge arm that the winding is connected
Continued flow switch pipe, the electric current of main switch determine the electric current of the winding；In other specific implementations of the invention
In example, it is also possible to by detecting other parameters of circuit, the electric current of the winding is determined by calculating, herein not
Illustrate again.
It should be noted that when above-mentioned multistate switch totem-pote circuit is realized using transformer, above-mentioned winding
Specially Transformer Winding；When above-mentioned multistate switch totem-pote circuit is realized using coupling inductance, it is above-mentioned around
Group is specially coupling inductance winding.
Because in the prior art, the more conventional CRM controls of multistate switch totem-pote circuit are opened polymorphic
It is energy when the instantaneous value for closing the AC terminal voltage of totem-pote circuit is less than the half of direct current terminal voltage
Enough realize what high frequency bridge arm switch pipe no-voltage was opened, and in the AC terminal of multistate switch totem-pote circuit
When the instantaneous value of voltage is more than or equal to the half of direct current terminal voltage, it is impossible to enough realize high frequency bridge arm switch pipe
No-voltage is open-minded.Therefore, it can big in the instantaneous value of the AC terminal voltage of multistate switch totem-pote circuit
When half equal to direct current terminal voltage, just using control method provided in an embodiment of the present invention；Many
When the instantaneous value of the AC terminal voltage of state switch totem-pote circuit is less than the half of direct current terminal voltage,
Still using the control method of prior art.Certainly, in the AC terminal voltage of multistate switch totem-pote circuit
Instantaneous value less than direct current terminal voltage half when, it would however also be possible to employ control provided in an embodiment of the present invention
Method.
Control method provided in an embodiment of the present invention can be, but not limited to be applied to polymorphic shown in Fig. 1~Fig. 5
Switch totem-pote circuit.
Below by taking the multistate switch totem-pote circuit shown in Fig. 1 as an example, to using provided in an embodiment of the present invention
The working condition of the polymorphic totem-pote circuit of control method is illustrated.
In multistate switch totem-pote circuit shown in Fig. 1, switching tube Qsr1 and Qsr2 constitute a power frequency bridge
Arm, switching tube Q1~Q4 constitutes two high frequency bridge arms；The power frequency bridge arm and two high frequency bridge arms are in parallel,
Two ends after parallel connection as multistate switch totem-pote circuit direct current terminals；The midpoint conduct of the power frequency bridge arm
Negative terminals in the AC terminal of multistate switch totem-pote circuit, the midpoint difference of two high frequency bridge arms
Two one end of winding of connection transformer Tx, the one of the other end connection input inductance L of two windings
End, the other end of input inductance L is used as the positive wiring in the AC terminal of multistate switch totem-pote circuit
End.
Assuming that the AC terminal of the polymorphic totem-pote circuit shown in Fig. 1 is input, by the exchange wiring
End input AC electricity.When the AC terminal voltage of the polymorphic totem-pote circuit shown in Fig. 1 is positive voltage,
As in the positive half cycle of AC terminal voltage, the switching tube Qsr1 on power frequency bridge arm is off state,
Switching tube Qsr2 is in the conduction state, and switching tube Q2, the Q4 on high frequency bridge arm are main switch, switch
Pipe Q1, Q3 are continued flow switch pipe；It is in the AC terminal voltage of the polymorphic totem-pote circuit shown in Fig. 1
During negative voltage, the switching tube Qsr2 as on the negative half period of AC terminal voltage, power frequency bridge arm is in
Off state, switching tube Qsr1 is in the conduction state, is opened based on switching tube Q1, the Q3 on high frequency bridge arm
Guan Guan, switching tube Q2, Q4 are continued flow switch pipe.
Wherein, the drive signal Vgs1 of the drive signal Vgs2 and switching tube Q1 of switching tube Q2 is complementary,
The drive signal Vgs3 of the drive signal Vgs4 and switching tube Q3 of switching tube Q4 is complementary, switching tube Q2
Drive signal Vgs2 and switching tube Q4 drive signal Vgs4 difference 180 degree, the drive of switching tube Q1
The drive signal Vgs3 difference 180 degrees of dynamic signal Vgs1 and switching tube Q3.
Embodiment 1：
In the positive half cycle of the AC terminal voltage of the polymorphic totem-pote circuit shown in Fig. 1, when on high frequency bridge arm
Main switch drive signal dutycycle be less than 0.5 when, do not consider Dead Time, the drive of each switching tube
As shown in figure 8, t0~t6 periods are a switch periods, IL is the electric current for being input into inductance L to dynamic signal, i.e.,
Input current, Ineg is default negative current.
T0~t1 periods, continued flow switch pipe Q1 shut-offs, main switch Q2 conductings, at continued flow switch pipe Q3
In conducting state, main switch Q4 is off state；During stable state, polymorphic totem-pote circuit shown in Fig. 1
Working condition such as Fig. 9 (a) shown in, input current IL gradually increases.
T1~t2 periods, main switch Q2 shut-off, continued flow switch pipe Q1 conducting, continued flow switch pipe Q3 after
Continuous in the conduction state, main switch Q4 is remained turned off；During stable state, polymorphic figure shown in Fig. 1
Rise shown in working condition such as Fig. 9 (b) of post circuit, input current IL gradually increases as low as 0.
There is high current when being turned off due to main switch Q2, be able to can be produced with the output junction capacity of switching tube humorous
Shake so that the output junction capacity of main switch Q2 charges, the output junction capacity electric discharge of continued flow switch pipe Q1,
By the resonant process, the conducting of continued flow switch pipe Q1 is that no-voltage is open-minded.
T2~t3 periods, continued flow switch pipe Q1 keeps conducting state, and main switch Q2 keeps pass
Disconnected state, continued flow switch pipe Q3 keeps conducting state, and main switch Q4 is remained turned off；
Shown in the working condition of polymorphic totem-pote circuit such as Fig. 9 (c) shown in Fig. 1, input current IL reversely, reaches
To default negative current.
T3~t4 periods, in t3 moment continued flow switch pipes Q3 shut-offs, because negative current can not be mutated, meeting
The output junction capacity electric charge of main switch Q4 is extracted, until its drain-source voltage drops to zero, main switch Q4
Conducting, continued flow switch pipe Q1 keeps conducting state, and main switch Q2 is remained turned off；
During stable state, shown in the working condition of polymorphic totem-pote circuit such as Fig. 9 (d) shown in Fig. 1, input current IL
Gradually increase.
Obviously, the conducting of main switch Q4 is that no-voltage is open-minded.
T4~t5 periods, main switch Q4 shut-off, continued flow switch pipe Q3 conducting, continued flow switch pipe Q1 after
Continuous in the conduction state, main switch Q2 is remained turned off；During stable state, polymorphic figure shown in Fig. 1
Rise shown in working condition such as Fig. 9 (e) of post circuit, input current IL gradually increases as low as 0.
There is high current when being turned off due to main switch Q4, resonance can be produced with the output junction capacity of switching tube,
So that the output junction capacity of main switch Q4 charges, the output junction capacity electric discharge of continued flow switch pipe Q3, warp
The resonant process is crossed, the conducting of continued flow switch pipe Q3 is that no-voltage is open-minded.
T5~t6 periods, continued flow switch pipe Q1 keeps conducting state, and main switch Q2 keeps pass
Disconnected state, continued flow switch pipe Q3 keeps conducting state, and main switch Q4 is remained turned off；
Shown in the working condition of polymorphic totem-pote circuit such as Fig. 9 (f) shown in Fig. 1, input current IL reversely, reaches
To default negative current.
Due to electric current reversely, the body diode of continued flow switch pipe Q1 and continued flow switch pipe Q3 can be quickly complete
Into Reverse recovery.If t6 moment continued flow switch pipes Q1 is turned off, because negative current can not be mutated, dead
The output junction capacity electric charge of main switch Q2 can be extracted in area, until its drain-source voltage drops to zero.
Obviously, the conducting of main switch Q2 is that no-voltage is open-minded in next switch periods.
Said process understands, main within t0~t1 periods, although continued flow switch pipe Q1 is off state
Switching tube Q2 is open-minded, is input into inductance L energy storage, and this high frequency bridge arm does not pass energy to circuit output end；But it is logical
Cross the biography energy of transformer Tx, the continued flow switch pipe Q3 conductings of another high frequency bridge arm, by energy from circuit
Input is delivered to circuit output end by input inductance L and transformer Tx so that energy transfer efficiency is improved.
Fig. 8 also shows that the twice of the switching frequency that the frequency of input inductance L electric currents is each switching tube, in identical electricity
Under flow liner ripple, equivalent to switching frequency reduction half, in conjunction with no-voltage turn-on characteristics, can greatly subtract
Small Switch Losses, improve circuit conversion efficiency.
In the negative half period of the AC terminal voltage of the polymorphic totem-pote circuit shown in Fig. 1, polymorphic totem electricity
The working condition on road is similar with the positive half cycle of AC terminal voltage, will not be described in detail herein.
Embodiment 2：
In the positive half cycle of the AC terminal voltage of the polymorphic totem-pote circuit shown in Fig. 1, when on high frequency bridge arm
Main switch drive signal dutycycle be more than 0.5 when, do not consider Dead Time, the drive of each switching tube
As shown in Figure 10, t0~t6 periods are a switch periods to dynamic signal, and IL is the electric current for being input into inductance L,
That is input current, Ineg is default negative current.
T0~t1 periods, continued flow switch pipe Q1 shut-offs, main switch Q2 conductings, at continued flow switch pipe Q3
In off state, main switch Q4 is in the conduction state；During stable state, polymorphic totem-pote circuit shown in Fig. 1
Working condition such as Figure 11 (a) shown in, input current IL gradually increases.
T1~t2 periods, main switch Q4 shut-off, continued flow switch pipe Q3 conducting, continued flow switch pipe Q1 after
Continuous to be off state, main switch Q2 keeps conducting state；During stable state, polymorphic figure shown in Fig. 1
Rise shown in working condition such as Figure 11 (b) of post circuit, input current IL gradually increases as low as 0.
There is high current when being turned off due to main switch Q4, resonance can be produced with the output junction capacity of switching tube,
So that the output junction capacity of main switch Q4 charges, the output junction capacity electric discharge of continued flow switch pipe Q3, warp
The resonant process is crossed, the conducting of continued flow switch pipe Q3 is that no-voltage is open-minded.
T2~t3 periods, continued flow switch pipe Q3 keeps conducting state, and main switch Q4 keeps pass
Disconnected state, continued flow switch pipe Q1 is remained turned off, and main switch Q2 keeps conducting state；
Shown in the working condition of polymorphic totem-pote circuit such as Figure 11 (c) shown in Fig. 1, input current IL reversely, reaches
To default negative current.
T3~t4 periods, in t3 moment continued flow switch pipes Q3 shut-offs, because negative current can not be mutated, meeting
The output junction capacity electric charge of main switch Q4 is extracted, until its drain-source voltage drops to zero, main switch Q4
Conducting, continued flow switch pipe Q1 is remained turned off, and main switch Q2 keeps conducting state；
During stable state, shown in the working condition of polymorphic totem-pote circuit such as Figure 11 (d) shown in Fig. 1, input current IL
Gradually increase.
Obviously, the conducting of main switch Q4 is that no-voltage is open-minded.
T4~t5 periods, main switch Q2 shut-off, continued flow switch pipe Q1 conducting, continued flow switch pipe Q3 after
Continuous to be off state, main switch Q4 keeps conducting state；During stable state, polymorphic figure shown in Fig. 1
Rise shown in working condition such as Figure 11 (e) of post circuit, input current IL gradually increases as low as 0.
There is high current when being turned off due to main switch Q2, resonance can be produced with the output junction capacity of switching tube,
So that the output junction capacity of main switch Q2 charges, the output junction capacity electric discharge of continued flow switch pipe Q1, warp
The resonant process is crossed, the conducting of continued flow switch pipe Q1 is that no-voltage is open-minded.
T5~t6 periods, continued flow switch pipe Q1 keeps conducting state, and main switch Q2 keeps pass
Disconnected state, continued flow switch pipe Q3 is remained turned off, and main switch Q4 keeps conducting state；
Shown in the working condition of polymorphic totem-pote circuit such as Figure 11 (f) shown in Fig. 1, input current IL reversely, reaches
To default negative current.
Due to electric current reversely, the body diode of continued flow switch pipe Q1 can be rapidly completed Reverse recovery.If
T6 moment continued flow switch pipes Q1 is turned off, and because negative current can not be mutated, main switch can be extracted in dead band
The output junction capacity electric charge of pipe Q2, until its drain-source voltage drops to zero.
Obviously, the conducting of main switch Q2 is that no-voltage is open-minded in next switch periods.
Said process understands, main within t1~t2 periods, although continued flow switch pipe Q1 is off state
Switching tube Q2 is turned on, and is input into inductance L energy storage, and this high frequency bridge arm does not pass energy to circuit output end；But it is logical
Cross the biography energy of transformer Tx, the continued flow switch pipe Q3 conductings of another high frequency bridge arm, by energy from circuit
Input is delivered to circuit output end by input inductance L and transformer Tx so that energy transfer efficiency is improved.
Figure 10 also shows that the twice of the switching frequency that the frequency of input inductance L electric currents is each switching tube, in identical
Under current ripples, equivalent to switching frequency reduction half, in conjunction with no-voltage turn-on characteristics, can be great
Reduce switching loss, improve circuit conversion efficiency.
In the negative half period of the AC terminal voltage of the polymorphic totem-pote circuit shown in Fig. 1, polymorphic totem electricity
The working condition on road is similar with the positive half cycle of AC terminal voltage, will not be described in detail herein.
It can be seen that, using the control method of polymorphic totem-pote circuit provided in an embodiment of the present invention, compared to existing
The control program of technology, extend continued flow switch pipe conducting duration so that electric current reversely, due to reverse current
In the presence of, it is possible to achieve the no-voltage of high frequency bridge arm switch pipe is open-minded, also, due to the element winding that is magnetic
In the presence of, during a high frequency bridge arm main switch is opened, can be by the coupling of winding, will
The energy transmission of input is to output end so that the energy transfer efficiency of circuit is doubled, and reduces circuit loss,
So as to improve circuit efficiency.
During actual implementation, it is also possible to the input current of multistate switch totem-pote circuit is obtained, according to multistate switch
The input current of totem-pote circuit controls the on off operating mode of each switching tube of high frequency bridge arm, electric current occurs reverse,
So as to reach the purpose for realizing that high frequency bridge arm switch pipe no-voltage is opened.
Based on same inventive concept, the multistate switch totem-pote circuit provided according to the above embodiment of the present invention
Control method, correspondingly, the embodiment of the present invention also provides a kind of control device of multistate switch totem-pote circuit,
As shown in figure 12, including：
Acquiring unit 1201, for in multistate switch totem-pote circuit each high frequency bridge arm connection around
Group, obtains the electric current of the winding；
Control unit 1202, for being positive voltage in the AC terminal voltage of multistate switch totem-pote circuit,
On the high frequency bridge arm of winding connection continued flow switch pipe is in the conduction state, main switch is off state
When, if the electric current for getting the winding is not up to default negative current, control this in the conduction state continuous
Stream switching tube keeps conducting state, the main switch for being off state and remains turned off；
If the electric current for getting the winding reaches default negative current, the continued flow switch in the conduction state is controlled
Pipe shut-off, the main switch for being off state are turned on.
Wherein, acquiring unit 1201, specifically for the electric current of the direct detection winding；Or detect the winding
Continued flow switch pipe, the electric current of main switch on the high frequency bridge arm of connection, the high frequency bridge connected by the winding
Continued flow switch pipe, the electric current of main switch on arm determine the electric current of the winding.
Specifically, above-mentioned winding is specially Transformer Winding, or it is coupling inductance winding.
Based on same inventive concept, the multistate switch totem-pote circuit provided according to the above embodiment of the present invention
Control method, correspondingly, the embodiment of the present invention also provides a kind of control device of multistate switch totem-pote circuit,
As shown in figure 13, including：
Acquiring unit 1301, for in multistate switch totem-pote circuit each high frequency bridge arm connection around
Group, obtains the electric current of the winding；
Control unit 1302, for being negative voltage in the AC terminal voltage of multistate switch totem-pote circuit,
On the high frequency bridge arm of winding connection continued flow switch pipe is in the conduction state, main switch is off state
When, if getting the electric current not up to pre-set forward electric current of the winding, control this in the conduction state continuous
Stream switching tube keeps conducting state, the main switch for being off state and remains turned off；
If the electric current for getting the winding reaches pre-set forward electric current, the continued flow switch in the conduction state is controlled
Pipe shut-off, the main switch for being off state are turned on.
Wherein, acquiring unit 1301, specifically for the electric current of the direct detection winding；Or detect the winding
Continued flow switch pipe, the electric current of main switch on the high frequency bridge arm of connection, the high frequency bridge connected by the winding
Continued flow switch pipe, the electric current of main switch on arm determine the electric current of the winding.
Specifically, above-mentioned winding is specially Transformer Winding, or it is coupling inductance winding.
The concrete function of each unit may refer to the control method embodiment of foregoing multistate switch totem-pote circuit,
Will not be described in detail herein.
Further, control device function shown in Figure 12 and control device function can be by same shown in Figure 13
Individual control device is realized.
Now, in Figure 12 in the function of acquiring unit 1201 and Figure 13 the function of acquiring unit 1301 by same
Acquiring unit realizes, in Figure 12 in the function of control unit 1202 and Figure 13 the function of control unit 1302 by same
One control unit is realized.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or knot
Close the form of the embodiment in terms of software and hardware.And, the present invention can be used and wherein wrapped at one or more
Containing computer usable program code computer-usable storage medium (including but not limited to magnetic disk storage,
CD-ROM, optical memory etc.) on implement computer program product form.
The present invention is produced with reference to method according to embodiments of the present invention, equipment (system) and computer program
The flow chart and/or block diagram of product is described.It should be understood that can by computer program instructions realize flow chart and
/ or block diagram in each flow and/or the flow in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions to all-purpose computer, special-purpose computer, insertion can be provided
The processor of formula processor or other programmable data processing devices is producing a machine so that by calculating
The instruction of the computing device of machine or other programmable data processing devices is produced for realizing in flow chart one
The device of the function of being specified in individual flow or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or the treatment of other programmable datas to set
In the standby computer-readable memory for working in a specific way so that storage is in the computer-readable memory
Instruction produce include the manufacture of command device, the command device realization in one flow of flow chart or multiple
The function of being specified in one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices, made
Obtain and series of operation steps is performed on computer or other programmable devices to produce computer implemented place
Reason, so as to the instruction performed on computer or other programmable devices is provided for realizing in flow chart one
The step of function of being specified in flow or multiple one square frame of flow and/or block diagram or multiple square frames.
, but those skilled in the art once know base although preferred embodiments of the present invention have been described
This creative concept, then can make other change and modification to these embodiments.So, appended right will
Ask and be intended to be construed to include preferred embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without de- to the embodiment of the present invention
From the spirit and scope of the embodiment of the present invention.So, if these modifications of the embodiment of the present invention and modification category
Within the scope of the claims in the present invention and its equivalent technologies, then the present invention be also intended to comprising these change and
Including modification.
Claims (10)
1. a kind of control method of multistate switch totem-pote circuit, it is characterised in that including：
For the winding of each the high frequency bridge arm connection in multistate switch totem-pote circuit, the electricity of the winding is obtained
Stream；
It is positive voltage, the high frequency bridge of winding connection in the AC terminal voltage of multistate switch totem-pote circuit
When continued flow switch pipe on arm is in the conduction state, main switch is off state, if getting the winding
Electric current be not up to default negative current, then the continued flow switch pipe for controlling this in the conduction state keeps leads
Logical state, the main switch for being off state are remained turned off；If getting the electricity of the winding
Stream reaches default negative current, then control that the continued flow switch pipe in the conduction state is turned off, this is off
The main switch conducting of state.
2. control method as claimed in claim 1, it is characterised in that obtain the electric current of the winding, has
Body includes：
The electric current of the direct detection winding；Or
Detect the winding connection high frequency bridge arm on continued flow switch pipe, the electric current of main switch, by this around
Continued flow switch pipe, the electric current of main switch on the high frequency bridge arm of group connection determine the electric current of the winding.
3. control method as claimed in claim 1 or 2, it is characterised in that the winding is specially change
Depressor winding, or be coupling inductance winding.
4. a kind of control method of multistate switch totem-pote circuit, it is characterised in that including：
For the winding of each the high frequency bridge arm connection in multistate switch totem-pote circuit, the electricity of the winding is obtained
Stream；
It is negative voltage, the high frequency bridge of winding connection in the AC terminal voltage of multistate switch totem-pote circuit
When continued flow switch pipe on arm is in the conduction state, main switch is off state, if getting the winding
Electric current be not up to pre-set forward electric current, then the continued flow switch pipe for controlling this in the conduction state keeps leads
Logical state, the main switch for being off state are remained turned off；If getting the electricity of the winding
Stream reaches pre-set forward electric current, then control that the continued flow switch pipe in the conduction state is turned off, this is off
The main switch conducting of state.
5. control method as claimed in claim 4, it is characterised in that obtain the electric current of the winding, has
Body includes：
The electric current of the direct detection winding；Or
Detect the winding connection high frequency bridge arm on continued flow switch pipe, the electric current of main switch, by this around
Continued flow switch pipe, the electric current of main switch on the high frequency bridge arm of group connection determine the electric current of the winding.
6. the control method as described in claim 4 or 5, it is characterised in that the winding is specially change
Depressor winding, or be coupling inductance winding.
7. a kind of control device of multistate switch totem-pote circuit, it is characterised in that including：
Acquiring unit, for the winding for each the high frequency bridge arm connection in multistate switch totem-pote circuit,
Obtain the electric current of the winding；
Control unit, for being positive voltage in the AC terminal voltage of multistate switch totem-pote circuit, should be around
Continued flow switch pipe on the high frequency bridge arm of group connection is in the conduction state, when main switch is off state,
If the electric current for getting the winding is not up to default negative current, the afterflow for controlling this in the conduction state is opened
Pass pipe keeps conducting state, the main switch for being off state and remains turned off；If obtaining
The electric current for getting the winding reaches default negative current, then control the continued flow switch pipe in the conduction state to close
The main switch conducting disconnected, this is off state.
8. control device as claimed in claim 7, it is characterised in that the acquiring unit, it is specific to use
In the electric current of the direct detection winding；Or detect the winding connection high frequency bridge arm on continued flow switch pipe,
The electric current of main switch, by continued flow switch pipe, the electricity of main switch on the high frequency bridge arm that the winding is connected
Stream determines the electric current of the winding.
9. a kind of control device of multistate switch totem-pote circuit, it is characterised in that including：
Acquiring unit, for the winding for each the high frequency bridge arm connection in multistate switch totem-pote circuit,
Obtain the electric current of the winding；
Control unit, for being negative voltage in the AC terminal voltage of multistate switch totem-pote circuit, should be around
Continued flow switch pipe on the high frequency bridge arm of group connection is in the conduction state, when main switch is off state,
If getting the electric current not up to pre-set forward electric current of the winding, the afterflow for controlling this in the conduction state is opened
Pass pipe keeps conducting state, the main switch for being off state and remains turned off；If obtaining
The electric current for getting the winding reaches pre-set forward electric current, then control the continued flow switch pipe in the conduction state to close
The main switch conducting disconnected, this is off state.
10. control device as claimed in claim 9, it is characterised in that the acquiring unit, it is specific to use
In the electric current of the direct detection winding；Or detect the winding connection high frequency bridge arm on continued flow switch pipe,
The electric current of main switch, by continued flow switch pipe, the electricity of main switch on the high frequency bridge arm that the winding is connected
Stream determines the electric current of the winding.
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| CN201510886331.4A CN106849692A (en) | 2015-12-04 | 2015-12-04 | A kind of control method and device of multistate switch totem-pote circuit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707102A (en) * | 2017-11-01 | 2018-02-16 | 深圳芯智汇科技有限公司 | DC DC converters and its control method |
| WO2019019976A1 (en) * | 2017-07-22 | 2019-01-31 | 中兴通讯股份有限公司 | Three-phase electrical rectification circuit device and three-phase electrical rectification method |
| CN110112903A (en) * | 2019-06-21 | 2019-08-09 | 青岛大学 | A kind of circuit of power factor correction, method, charger and electric car |
| CN112398330A (en) * | 2020-12-25 | 2021-02-23 | 重庆宏一电气有限公司 | Bridgeless PFC converter and control method thereof |
| CN112701905A (en) * | 2021-01-28 | 2021-04-23 | 三峡大学 | Single-phase three-level power factor correction circuit based on pseudo totem-pole structure |
| WO2021097746A1 (en) * | 2019-11-21 | 2021-05-27 | Abb Schweiz Ag | Power factor correction circuit and industrial robot |
| WO2021139507A1 (en) * | 2020-01-09 | 2021-07-15 | 杭州中恒电气股份有限公司 | Totem-pole bridgeless pfc circuit, control method, electronic device, and medium |
| CN113839547A (en) * | 2020-06-23 | 2021-12-24 | 维谛公司 | Starting method and circuit of totem-pole circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035364A (en) * | 2010-12-02 | 2011-04-27 | 成都芯源***有限公司 | Bridgeless power factor correction converter and control method thereof |
| CN102130580A (en) * | 2011-03-30 | 2011-07-20 | 艾默生网络能源***北美公司 | Totem-pole bridgeless power factor correction circuit |
| CN102721848A (en) * | 2011-03-29 | 2012-10-10 | 艾默生网络能源***北美公司 | Method and apparatus for detecting input current of bridgeless PFC circuit |
-
2015
- 2015-12-04 CN CN201510886331.4A patent/CN106849692A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035364A (en) * | 2010-12-02 | 2011-04-27 | 成都芯源***有限公司 | Bridgeless power factor correction converter and control method thereof |
| CN102721848A (en) * | 2011-03-29 | 2012-10-10 | 艾默生网络能源***北美公司 | Method and apparatus for detecting input current of bridgeless PFC circuit |
| CN102130580A (en) * | 2011-03-30 | 2011-07-20 | 艾默生网络能源***北美公司 | Totem-pole bridgeless power factor correction circuit |
Non-Patent Citations (2)
| Title |
|---|
| C. MARXGUT 等: "Interleaved Triangular Current Mode (TCM) Resonant Transition, Single Phase PFC Rectifier with High Efficiency and High Power Density", 《THE 2010 INTERNATIONAL POWER ELECTRONICS CONFERENCE》 * |
| D. LEUENBERGER 等: "Comparison of a Soft Switched TCM T-Type Inverter to Hard Switched Inverters for a 3 Phase PV Grid Interface", 《15TH INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019019976A1 (en) * | 2017-07-22 | 2019-01-31 | 中兴通讯股份有限公司 | Three-phase electrical rectification circuit device and three-phase electrical rectification method |
| CN107707102A (en) * | 2017-11-01 | 2018-02-16 | 深圳芯智汇科技有限公司 | DC DC converters and its control method |
| CN110112903A (en) * | 2019-06-21 | 2019-08-09 | 青岛大学 | A kind of circuit of power factor correction, method, charger and electric car |
| WO2021097746A1 (en) * | 2019-11-21 | 2021-05-27 | Abb Schweiz Ag | Power factor correction circuit and industrial robot |
| WO2021139507A1 (en) * | 2020-01-09 | 2021-07-15 | 杭州中恒电气股份有限公司 | Totem-pole bridgeless pfc circuit, control method, electronic device, and medium |
| CN113839547A (en) * | 2020-06-23 | 2021-12-24 | 维谛公司 | Starting method and circuit of totem-pole circuit |
| CN113839547B (en) * | 2020-06-23 | 2024-01-30 | 维谛公司 | Starting method and circuit of totem pole circuit |
| CN112398330A (en) * | 2020-12-25 | 2021-02-23 | 重庆宏一电气有限公司 | Bridgeless PFC converter and control method thereof |
| CN112398330B (en) * | 2020-12-25 | 2021-10-15 | 重庆宏一电气有限公司 | Bridgeless PFC converter and control method thereof |
| CN112701905A (en) * | 2021-01-28 | 2021-04-23 | 三峡大学 | Single-phase three-level power factor correction circuit based on pseudo totem-pole structure |
| CN112701905B (en) * | 2021-01-28 | 2022-02-01 | 三峡大学 | Single-phase three-level power factor correction circuit based on pseudo totem-pole structure |
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Application publication date: 20170613 |