CN106026423A - Amplitude limiting control circuit and method - Google Patents
Amplitude limiting control circuit and method Download PDFInfo
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- CN106026423A CN106026423A CN201610632944.XA CN201610632944A CN106026423A CN 106026423 A CN106026423 A CN 106026423A CN 201610632944 A CN201610632944 A CN 201610632944A CN 106026423 A CN106026423 A CN 106026423A
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- Prior art keywords
- switch
- circuit
- inductance
- pipe
- votage control
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
Abstract
The invention provides an amplitude limiting control circuit and method. The circuit comprises a resonance coil, a resonance capacitor, a switch and an inductor. The inductor is connected with the resonance coil in series after being connected with the switch in parallel to obtain a first circuit, and the first circuit is connected with the resonance capacitor in parallel or in series. When stable voltage needs to be provided, the switch is controlled to be switched on, the inductor is short-circuited, inductance of the circuit is changed, and the resonance state is further changed, stable voltage or current can be provided, and the problem that a driven resonance ring is instable in work is solved.
Description
Technical field
The present invention relates to wireless power field, in particular, relate to a kind of amplitude limit control circuit and method.
Background technology
Driven resonant ring has the double grading accepting energy and emitted energy, in the terminal of wireless power,
Driven resonant ring Chang Dangzuo receives resonant ring and uses, and powers for terminal appliance.
Owing to driven resonant ring works in resonant condition, the voltage and current amplitude in resonant ring is very big, and
And unstable, if powered directly to terminal appliance, huge electric current and voltage pulsation can be produced, can give
Terminal appliance brings serious impact, even can burn electrical equipment.
Therefore, need badly and a kind of control driven resonant ring voltage or the amplitude of electric current, it is ensured that driven resonant ring work
Make stable circuit.
Summary of the invention
In view of this, the present invention provides a kind of amplitude limit control circuit and method, to solve driven resonant ring work
Make unstable problem.
For solving above-mentioned technical problem, present invention employs following technical scheme:
A kind of amplitude limit control circuit, including:
Resonance coil, resonant capacitance, switch and inductance；
Described inductance is connected with described resonance coil with after described switch in parallel, obtains the first circuit, described
First circuit is with described resonant capacitance in parallel or in series.
Preferably, described switch is votage control switch；
Wherein, a switch terminals of described votage control switch is connected with one end of described inductance, described voltage-controlled opens
Another switch terminals closed is connected with the common port of described inductance, described resonance coil；Described resonant capacitance
One end of being not connected with described inductance with described resonance coil, one end be connected.
Preferably, described votage control switch is IGBT pipe, and the collector and emitter of described IGBT pipe is two
Individual switch terminals.
Preferably, described votage control switch is MOSFET pipe, and drain electrode and the source electrode of described MOSFET pipe are
Two switch terminals.
Preferably, described votage control switch is TRIAC pipe, main electrode T1 of described TRIAC pipe and main electricity
Pole T2 is two switch terminals.
Preferably, described votage control switch is two IGBT pipe differential concatenations, and said two IGBT pipe is reversely
Extremely two switch terminals of two current collections after series connection.
Preferably, described votage control switch is two MOSFET pipe differential concatenations, said two MOSFET
Two drain electrodes after pipe differential concatenation are two switch terminals.
Preferably, described votage control switch is two TRIAC pipe differential concatenations, and said two TRIAC is managed
Two main electrodes T2 after differential concatenation are two switch terminals.
A kind of limiting control method, is applied to the amplitude limit control circuit described in above-mentioned any one, described side
Method includes:
When needing to provide stable voltage, control described switch conduction.
Preferably, the described switch conduction of described control, specifically include:
Use the mode of manual off switch, the mode of input low and high level or the mode of pulse width modulation
Control described switch conduction.
Compared to prior art, the method have the advantages that
The invention provides a kind of amplitude limit control circuit and method, described circuit includes: resonance coil, humorous
Shake electric capacity, switch and inductance；Described inductance is connected with described resonance coil with after described switch in parallel,
To the first circuit, described first circuit is with described resonant capacitance in parallel or in series.When needs provide stable
Voltage time, control described switch conduction, described inductance is shorted, and the inductance value of circuit changes, and then
Resonant condition is changed, using the teaching of the invention it is possible to provide stable voltage or electric current, solves driven resonant ring work shakiness
Fixed problem.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
Fig. 1 is series resonance ring and the structural representation of parallel resonance ring in the present invention；
Fig. 2 is the structural representation of three end votage control switches in the present invention；
Fig. 3 is the structural representation of four end votage control switches in the present invention；
Fig. 4 is the structural representation of the resonant ring applying three end votage control switches in the present invention；
Fig. 5 is the structural representation of the resonant ring applying four end votage control switches in the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
The invention provides a kind of amplitude limit control circuit, including:
Resonance coil, resonant capacitance, switch and inductance；
Described inductance is connected with described resonance coil with after described switch in parallel, obtains the first circuit, described
First circuit is with described resonant capacitance in parallel or in series.
With reference to Fig. 1, in Fig. 1 in the circuit in left side, A, B represent two outfans of series resonance ring, arrow
Head represents magnetic direction, and K represents that switch, C1 represent that resonant capacitance, L1 represent that resonance coil, L2 represent
Inductance, resonant capacitance C1 forms series resonance ring with resonance coil L1, inductance L2.
In Fig. 1 in the circuit on right side, A, B represent two outfans of parallel resonance ring, and arrow represents magnetic field
Direction, K represents that switch, C1 represent that resonant capacitance, L1 represent that resonance coil, L2 represent inductance, resonance
Electric capacity C1 forms parallel resonance ring with resonance coil L1, inductance L2.
When switching K and connecting, the resistance of itself is zero or close to zero, at this moment, is equivalent to inductance L2 short
Road, the inductance value of circuit necessarily changes, and can be calculated as follows:
Lt=L1+L2
In formula, Lt is total inductance amount, and L1 is the inductance value of resonance coil, and L2 is the inductance value of inductance, series connection
After, Lt is more than L1, also greater than L2；
When, after switch K Guan Bi, inductance L2 is shorted, according to the computing formula of resonant frequency:
The resonant frequency of circuit will change, and original resonant condition is destroyed, amplitude respective change, output
Voltage is the most different.
When inductance L2 is coil, particularly it is simultaneously in same magnetic field with resonance coil L1 when it,
Resonance coil L1 is by the serious restriction by inductance L2, when inductance L2 is shorted, the electricity of resonance coil L1
Sensibility reciprocal also will occur significantly to change, and therefore, the resonance amplitude of resonant ring changes therewith, from A, B two ends
The voltage of output also changes.
In Fig. 1, the work process of each element is:
When, after switch K Guan Bi, owing to inductance L2 is shorted, the original state of resonant ring is destroyed.Assume humorous
The original state of ring of shaking is to maximize, and is i.e. in peak swing state, when switching K and connecting, and the first circuit
Inductance value reduce, optimum resonant state be destroyed, amplitude decline；Otherwise, if original shape of resonant ring
State is not to maximize, and is i.e. in non-peak swing state, when switching K and connecting, and the inductance value of the first circuit
Reducing, the resonant condition of resonant ring is likely to occur one of following two phenomenon: or amplitude strengthens, or amplitude
Reduce；It is in a word, in parallel with switch K by described inductance L2, it is possible to achieve regulation and the control to amplitude,
If for the wireless power of terminal appliance, then rational voltage can be exported, it is ensured that the normal work of electrical equipment
And safety.
Present embodiments providing a kind of amplitude limit control circuit, described circuit includes: resonance coil, resonance electricity
Hold, switch and inductance；Described inductance is connected with described resonance coil with after described switch in parallel, obtains
One circuit, described first circuit is with described resonant capacitance in parallel or in series.When needing to provide stable electricity
During pressure, controlling described switch conduction, described inductance is shorted, and the inductance value of circuit changes, and then resonance
State is changed, using the teaching of the invention it is possible to provide stable voltage or electric current, solves driven resonant ring job insecurity
Problem.
Optionally, in another embodiment of the present invention, described switch is votage control switch；
Wherein, a switch terminals of described votage control switch is connected with one end of described inductance, described voltage-controlled opens
Another switch terminals closed is connected with the common port of described inductance, described resonance coil；Described resonant capacitance
One end of being not connected with described inductance with described resonance coil, one end be connected.
Concrete, described votage control switch is IGBT pipe, and the collector and emitter of described IGBT pipe is two
Switch terminals；Described votage control switch is MOSFET pipe, and the drain electrode of described MOSFET pipe and source electrode are two and open
Guan Duan；Described votage control switch is TRIAC pipe, and main electrode T1 of described TRIAC pipe and main electrode T2 are two
Individual switch terminals；Described votage control switch is two IGBT pipe differential concatenations, said two IGBT pipe differential concatenation
Extremely two switch terminals of two current collections afterwards；Described votage control switch is two MOSFET pipe differential concatenations,
Two drain electrodes after said two MOSFET pipe differential concatenation are two switch terminals；
Described votage control switch is two TRIAC pipe differential concatenations, said two TRIAC pipe differential concatenation it
After two main electrodes T2 be two switch terminals.
One IGBT pipe, MOSFET pipe or TRIAC pipe are three end votage control switches, two IGBT pipes
Differential concatenation, two MOSFET pipe differential concatenations or two TRIAC pipe differential concatenations are four side pressures
Control switch.
Wherein, IGBT manages (Insulated Gate Bipolar Transistor), insulated gate bipolar transistor,
The compound full-control type voltage being made up of BJT (double pole triode) and MOS (insulating gate type field effect tube) drives
Dynamic formula power semiconductor.MOSFET manages (Metal-Oxide-Semiconductor Field-Effect
Transistor), Metal-Oxide Semiconductor field-effect transistor, is that one can be widely used in simulation
Circuit and the field-effect transistor of digital circuit.Three terminal bidirectional alternating-current switch TRIAC pipe is substantially bi-directional crystalline substance
Brake tube, it grows up on the basis of triode thyristor, and it can not only replace two reversed polarity parallel connections
IGCT, and only with one trigger circuit.
In order to make the votage control switch that those skilled in the art is more apparent from the present invention, please
With reference to Fig. 2 and Fig. 3.Wherein, what Fig. 2 represented is three end votage control switches, and what Fig. 3 represented is that four side pressure controls are opened
Close.
In Fig. 2, three end votage control switch S1 have 1,2,3 three ends, and wherein 2 ends and 3 ends are two switch terminals,
1 end is for controlling end.IGBT pipe has three poles, respectively colelctor electrode C, emitter E and gate pole G.
MOSFET pipe also has three poles, respectively drain D, grid G and source S.Three poles of TRIAC pipe
It is respectively main electrode T1, main electrode T2 and grid G.
When three end votage control switch S1 are IGBT pipe, foot position corresponding relation is: 1-G, 2-C, 3-E；When three
When end votage control switch S1 is MOSFET pipe, foot position corresponding relation is: 1-G, 2-D, 3-S；When three side pressures
When control switch S1 is TRIAC pipe, foot position corresponding relation is: 1-G, 2-T2,3-T1.
In Fig. 3, four end votage control switch S2 have 1,2,3,4 four ends, and wherein, 2,3 is two switch terminals,
1,4 is two control ends, and wherein, 4 ends are used for ground connection.Described four end votage control switch S2 are two IGBT
Pipe differential concatenation or two MOSFET pipe differential concatenations or two TRIAC pipe differential concatenations.
Concrete, when four end votage control switch S2 are two IGBT pipe differential concatenations, foot position corresponding relation is:
1-G, 2-C, 3-C, 4-E, when four end votage control switch S2 are two MOSFET pipe differential concatenations, foot
Position corresponding relation is: 1-G, 2-D, 3-D, 4-S, when four end votage control switch S2 are that two TRIAC pipes are anti-
When series connection, foot position corresponding relation is: 1-G, 2-T2,3-T2,4-T1.
It should be noted that no matter be three end votage control switch S1, or four end votage control switch S2, control end 1
It is used for controlling the break-make of votage control switch.
Votage control switch and inductance L2, resonance coil L1 and resonance is described with reference to Fig. 4 and Fig. 5, Fig. 4 and Fig. 5
The annexation of electric capacity C1.
In Fig. 4, C1 represents that resonant capacitance, L1 represent that resonance coil, L2 represent that inductance, S1 represent three ends
Votage control switch, A, B represent two outfans, and arrow represents magnetic field.The one of described three end votage control switch S1
Individual switch terminals is connected with one end of described inductance L2, another switch terminals of described three end votage control switch S1 with
Described inductance L2, the common port of described resonance coil L1 connect；One end of described resonant capacitance C1 is with described
Resonance coil L1 is not connected with one end of described inductance L2 and connects.
Described inductance L2 connects with described resonance coil L1 after described three end votage control switch S1 parallel connections, obtains
First circuit, described first circuit is with described resonant capacitance C1 in parallel or in series.
In Fig. 5, C1 represents that resonant capacitance, L1 represent that resonance coil, L2 represent that inductance, S2 represent four ends
Votage control switch, A, B represent two outfans, and arrow represents magnetic field.The one of described four end votage control switch S2
Individual switch terminals is connected with one end of described inductance L2, another switch terminals of described four end votage control switch S2 with
Described inductance L2, the common port of described resonance coil L1 connect；One end of described resonant capacitance C1 is with described
Resonance coil L1 is not connected with one end of described inductance L2 and connects.
Described inductance L2 connects with described resonance coil L1 after described four end votage control switch S2 parallel connections, obtains
First circuit, described first circuit is with described resonant capacitance C1 in parallel or in series.
Three end votage control switch S1 are applicable to halfwave rectifier, and therefore, one end of described inductance L2 must conduct
" "；Four end votage control switch S2 are applicable to all wave rectification, the two ends of described inductance L2 do not connect " ",
Can be selected for from A, B two ends export, the negative pole after rectifying and wave-filtering as " ", simultaneously as four side pressure controls
The input of switch S2 " ".
In the present embodiment, described votage control switch is that IGBT manages or MOSFET manages or TRIAC pipe, or institute
Stating votage control switch is two IGBT pipe differential concatenations or two MOSFET pipe differential concatenations or two TRIAC
Pipe differential concatenation.Selection mode is more, can select according to different situations.
In another embodiment of the present invention, it is provided that a kind of limiting control method, it is applied to above-mentioned amplitude limit control
Circuit processed, described method includes:
When needing to provide stable voltage, control described switch conduction.
Concrete, the described switch conduction of described control, specifically include:
Use the mode of manual off switch, the mode of input low and high level or the mode of pulse width modulation
Control described switch conduction.
When switch is not votage control switch, use the mode of manual off switch can make switch conduction.When
When switch is for votage control switch, the mode of input low and high level or the mode of pulse width modulation is used to control institute
State switch conduction.
During it should be noted that switch is for votage control switch, when controlling end input high level, two switches
End conducting, connection resistance is zero or close to zero, inductance is shorted, and original resonant condition is changed,
Amplitude changes.When controlling end and being low level, two switch terminals short circuits, offresistance is infinitely great, recovers
Original resonant condition, amplitude changes.
Use the mode of pulse width modulation, i.e. when switch terminals input pulse width modulated signal, permissible
Changing the break-make of votage control switch, when votage control switch turns on, connecting resistance is zero or close to zero, inductance
Being shorted, original resonant condition is changed, and amplitude changes.When votage control switch turns off, offresistance
Infinity, recovers original resonant condition, and amplitude changes.
In the present embodiment, by using by the way of manual off switch, the mode of input low and high level or arteries and veins
The mode rushing width modulated controls described switch conduction, and inductance is shorted, and the inductance value of circuit changes, and enters
And resonant condition is changed, using the teaching of the invention it is possible to provide stable voltage or electric current, solves driven resonant ring and work not
Stable problem.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. an amplitude limit control circuit, it is characterised in that including:
Resonance coil, resonant capacitance, switch and inductance；
Described inductance is connected with described resonance coil with after described switch in parallel, obtains the first circuit, described
First circuit is with described resonant capacitance in parallel or in series.
Circuit the most according to claim 1, it is characterised in that described switch is votage control switch；
Wherein, a switch terminals of described votage control switch is connected with one end of described inductance, described voltage-controlled opens
Another switch terminals closed is connected with the common port of described inductance, described resonance coil；Described resonant capacitance
One end of being not connected with described inductance with described resonance coil, one end be connected.
Circuit the most according to claim 2, it is characterised in that described votage control switch is IGBT pipe,
The collector and emitter of described IGBT pipe is two switch terminals.
Circuit the most according to claim 2, it is characterised in that described votage control switch is MOSFET
Pipe, the drain electrode of described MOSFET pipe and source electrode are two switch terminals.
Circuit the most according to claim 2, it is characterised in that described votage control switch is TRIAC
Pipe, main electrode T1 of described TRIAC pipe and main electrode T2 are two switch terminals.
Circuit the most according to claim 2, it is characterised in that described votage control switch is two IGBT
Pipe differential concatenation, extremely two switch terminals of two current collections after said two IGBT pipe differential concatenation.
Circuit the most according to claim 2, it is characterised in that described votage control switch is two
MOSFET pipe differential concatenation, two drain electrodes after said two MOSFET pipe differential concatenation are two
Switch terminals.
Circuit the most according to claim 2, it is characterised in that described votage control switch is two TRIAC
Pipe differential concatenation, two main electrodes T2 after said two TRIAC pipe differential concatenation are two switches
End.
9. a limiting control method, it is characterised in that be applied to such as claim 1～8 any one institute
The amplitude limit control circuit stated, described method includes:
When needing to provide stable voltage, control described switch conduction.
Method the most according to claim 9, it is characterised in that the described switch conduction of described control,
Specifically include:
Use the mode of manual off switch, the mode of input low and high level or the mode of pulse width modulation
Control described switch conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632944.XA CN106026423B (en) | 2016-08-04 | 2016-08-04 | A kind of clipping control circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632944.XA CN106026423B (en) | 2016-08-04 | 2016-08-04 | A kind of clipping control circuit and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106026423A true CN106026423A (en) | 2016-10-12 |
| CN106026423B CN106026423B (en) | 2019-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610632944.XA Active CN106026423B (en) | 2016-08-04 | 2016-08-04 | A kind of clipping control circuit and method |
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| CN (1) | CN106026423B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451705A (en) * | 2016-12-20 | 2017-02-22 | 北京小米移动软件有限公司 | Electronic equipment, wireless charging system, equipment, method and device |
| CN111342568A (en) * | 2020-03-30 | 2020-06-26 | 重庆理工大学 | Series-parallel resonance convertible wireless charging transmitting circuit and control method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202524175U (en) * | 2012-04-24 | 2012-11-07 | 朱斯忠 | Three-dimensional wireless power supply |
| CN206023385U (en) * | 2016-08-04 | 2017-03-15 | 中惠创智无线供电技术有限公司 | A kind of amplitude limit control circuit |
-
2016
- 2016-08-04 CN CN201610632944.XA patent/CN106026423B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451705A (en) * | 2016-12-20 | 2017-02-22 | 北京小米移动软件有限公司 | Electronic equipment, wireless charging system, equipment, method and device |
| CN111342568A (en) * | 2020-03-30 | 2020-06-26 | 重庆理工大学 | Series-parallel resonance convertible wireless charging transmitting circuit and control method |
| CN111342568B (en) * | 2020-03-30 | 2021-05-25 | 重庆理工大学 | Series-parallel resonance convertible wireless charging transmitting circuit and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106026423B (en) | 2019-04-09 |
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Effective date of registration: 20210318 Address after: 518000 room 133-134, No.1 International Students (Longgang) Pioneer Park, Longcheng street, Longgang District, Shenzhen City, Guangdong Province Patentee after: ZONECHARGE (SHENZHEN) WIRELESS POWER SUPPLY TECHNOLOGY Co.,Ltd. Address before: 264003 Mingda West Road, Laishan District, Yantai, Shandong Province, No. 11 Patentee before: ZHONG HUI POWERISE WIRELESS POWER TECHNOLOGY Ltd. |
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