CN106253495A - A kind of amplitude limit control circuit and method - Google Patents
A kind of amplitude limit control circuit and method Download PDFInfo
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- CN106253495A CN106253495A CN201610634365.9A CN201610634365A CN106253495A CN 106253495 A CN106253495 A CN 106253495A CN 201610634365 A CN201610634365 A CN 201610634365A CN 106253495 A CN106253495 A CN 106253495A
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Abstract
This application provides a kind of amplitude limit control circuit and method, described circuit includes: resonance coil, resonant capacitance, switch and transformator；Described resonance coil and described resonant capacitance are in parallel or in series；The primary coil of described transformator is in parallel with described resonance coil；The secondary coil of described transformator and described switch in parallel.When needing to provide stable voltage, control described switch conduction, the secondary coil of the most described transformator is shorted, the inductance value of the primary coil of described transformator declines, the total inductance amount of whole circuit declines, and then resonant condition is changed, using the teaching of the invention it is possible to provide stable voltage or electric current, the problem solving driven resonant ring job insecurity.
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, from dynamic resonance
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 unstable,
If powered directly to terminal appliance, huge electric current and voltage pulsation can be produced, serious impact can be brought to terminal appliance,
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 working stability
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 job insecurity
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 transformator；
Described resonance coil and described resonant capacitance are in parallel or in series；The primary coil of described transformator and described resonance
Coils from parallel connection of coils；The secondary coil of described transformator is connected with described switch.
Preferably, described switch is votage control switch；
Wherein, two switch terminals of described votage control switch are connected with the secondary coil of described transformator.
Preferably, described votage control switch is IGBT pipe, and the collector and emitter of described IGBT pipe is two switch terminals.
Preferably, described votage control switch is MOSFET pipe, and the drain electrode of described MOSFET pipe and source electrode are two switch terminals.
Preferably, described votage control switch is TRIAC pipe, and main electrode T1 of described TRIAC pipe and main electrode T2 are two and open
Guan Duan.
Preferably, described votage control switch is two IGBT pipe differential concatenations, after said two IGBT pipe differential concatenation
Extremely two switch terminals of two current collections.
Preferably, described votage control switch is two MOSFET pipe differential concatenations, said two MOSFET pipe differential concatenation it
After two drain electrodes be two switch terminals.
Preferably, described votage control switch is two TRIAC pipe differential concatenations, after said two TRIAC pipe differential concatenation
Two main electrodes T2 be two switch terminals.
A kind of limiting control method, is applied to the amplitude limit control circuit described in above-mentioned any one, and described method includes:
When needing to provide stable voltage, control described switch conduction.
Preferably, the described switch conduction of described control, specifically include:
The mode using the mode of manual off switch, the mode of input low and high level or pulse width modulation controls 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, resonant capacitance, open
Close and transformator；Described resonance coil and described resonant capacitance are in parallel or in series；The primary coil of described transformator is with described
Resonance coil is in parallel；The secondary coil of described transformator and described switch in parallel.When needing to provide stable voltage, control institute
Stating switch conduction, the secondary coil of the most described transformator is shorted, and the inductance value of the primary coil of described transformator declines, whole
The total inductance amount of individual circuit declines, and then resonant condition is changed, using the teaching of the invention it is possible to provide stable voltage or electric current, solves driven humorous
Shake the problem of ring job insecurity.
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 embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
Fig. 1 is the structural representation of resonant 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 clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The invention provides a kind of amplitude limit control circuit, described circuit includes:
Resonance coil, resonant capacitance, switch and transformator；
Described resonance coil and described resonant capacitance are in parallel or in series；The primary coil of described transformator and described resonance
Coils from parallel connection of coils；The secondary coil of described transformator is connected with described switch.
With reference to Fig. 1, in Fig. 1 in the figure in left side, A, B represent two outfans of series resonance ring, and arrow represents magnetic field side
To, K represents that switch, C1 represent that resonant capacitance, L1 represent resonance coil, the primary coil of L2 indication transformer, and L3 represents transformation
The secondary coil of device.
In Fig. 1 in the figure on right side, A, B represent two outfans of parallel resonance ring, and arrow represents that magnetic direction, K represent
Switch, C1 represents that resonant capacitance, L1 represent resonance coil, the primary coil of L2 indication transformer, the secondary of L3 indication transformer
Coil.
When switching K open circuit, the secondary coil L3 of transformator is inoperative, at this moment, is equivalent to resonance coil L1 and transformation
Device primary coil L2 is in parallel, and the inductance value after parallel connection can be calculated as follows:
1/Lt=1/L1+1/L2
Lt=(L1*L2)/(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 the primary coil of transformator, and
After connection, Lt is less than L1, again smaller than L2.
When switching K Guan Bi, the secondary coil L3 of transformator is shorted, and defines a short-circuited conducting sleeve, the internal resistance of transformator
Being greatly lowered, the inductance value of the primary coil L2 of transformator significantly reduces；Computing formula according to resonant frequency:The inductance value of the most whole circuit reduces, and the original resonant condition of circuit is destroyed, amplitude respective change,
Output voltage is the most different.
In Fig. 1, the work process of each element is:
After the secondary coil L3 tandem tap K of transformator, the primary coil L2 of transformator has reformed into a variable coil,
The inductance value of primary coil L2 is by different along with cut-offfing of K of switch.When switching K conducting, the internal resistance of switch K is zero or connects
Being bordering on zero, at this moment, the secondary coil of transformator is shorted, and forms a short-circuited conducting sleeve, and the core reluctance of transformator will significantly drop
Low, the impedance of primary coil L2 synchronizes to reduce, owing to primary coil L2 is in parallel with resonance coil L1, and total electricity of the most whole circuit
Sensibility reciprocal declines, and original resonant condition is destroyed, and amplitude changes, and output voltage is along with change.
Present embodiments providing a kind of amplitude limit control circuit, described circuit includes: resonance coil, resonant capacitance, switch and
Transformator；Described resonance coil and described resonant capacitance are in parallel or in series；The primary coil of described transformator and described resonance
Coils from parallel connection of coils；The secondary coil of described transformator and described switch in parallel.When needing to provide stable voltage, open described in control
Closing conducting, the secondary coil of the most described transformator is shorted, and the inductance value of the primary coil of described transformator declines, whole electricity
The total inductance amount on road declines, 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
The problem of job insecurity.
Optionally, in another embodiment of the present invention, described switch K is votage control switch；
Wherein, two switch terminals of described votage control switch are connected with the secondary coil of described transformator.
Concrete, described votage control switch is IGBT pipe, and the collector and emitter of described IGBT pipe is two switch terminals；Institute
Stating votage control switch is MOSFET pipe, and the drain electrode of described MOSFET pipe and source electrode are two switch terminals；Described votage control switch is TRIAC
Pipe, main electrode T1 of described TRIAC pipe and main electrode T2 are two switch terminals；Described votage control switch is two IGBT pipe reversely strings
Connection, extremely two switch terminals of two current collections after said two IGBT pipe differential concatenation；Described votage control switch is two
MOSFET pipe differential concatenation, two drain electrodes after said two MOSFET pipe differential concatenation are two switch terminals；Described voltage-controlled
Switch is two TRIAC pipe differential concatenations, and two main electrodes T2 after said two TRIAC pipe differential concatenation are two switches
End.
One IGBT pipe, MOSFET pipe or TRIAC pipe are three end votage control switches, two IGBT pipe differential concatenations, two
Individual MOSFET pipe differential concatenation or two TRIAC pipe differential concatenations are four end votage control switches.
Wherein, IGBT manages (Insulated Gate Bipolar Transistor), and insulated gate bipolar transistor is
The compound full-control type voltage driven type power being made up of BJT (double pole triode) and MOS (insulating gate type field effect tube) is partly led
Body device.MOSFET manages (Metal-Oxide-Semiconductor Field-Effect Transistor), metal-oxide
Thing semiconductor field effect transistor, is a kind of field-effect transistor that can be widely used in analog circuit and digital circuit.Three ends
Two-way exchange switch TRIAC pipe is substantially bi-directional IGCT, and it grows up on the basis of triode thyristor, and it is not
It is only capable of the IGCT replacing two reversed polarity in parallel, and only triggers circuit with one.
In order to the votage control switch making those skilled in the art more be apparent from the present invention, refer to Fig. 2
And Fig. 3.Wherein, what Fig. 2 represented is three end votage control switches, and what Fig. 3 represented is four end votage control switches.
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, and 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, is respectively leakage
Pole D, grid G and source S.Three poles of TRIAC pipe are 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 end votage control switches
When S1 is MOSFET pipe, foot position corresponding relation is: 1-G, 2-D, 3-S；When three end votage control switch S1 are TRIAC pipe, foot position is right
Should be related to for 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, and 1,4 is two controls
End processed, wherein, 4 ends are used for ground connection.Described four end votage control switch S2 be two IGBT pipe differential concatenations or two MOSFET pipe anti-
To series connection 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 two TRIAC pipe differential concatenations, 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 and be used for controlling
The break-make of votage control switch.
Votage control switch and resonance coil L1, resonant capacitance C1, primary coil is described with reference to Fig. 4 and Fig. 5, Fig. 4 and Fig. 5
L2, the annexation of secondary coil L3.
In Fig. 4 in the figure in left side, A, B represent two outfans of series resonance ring, and arrow represents that magnetic direction, S1 represent
Three end votage control switches, C1 represents that resonant capacitance, L1 represent resonance coil, the primary coil of L2 indication transformer, and L3 represents transformation
The secondary coil of device.Primary coil L2 is in parallel with resonance coil L1, two switches of secondary coil L3 and three end votage control switch S1
End series connection.
In Fig. 4 in the figure on right side, A, B represent two outfans of parallel resonance ring, and arrow represents that magnetic direction, S1 represent
Three end votage control switches, C1 represents that resonant capacitance, L1 represent resonance coil, the primary coil of L2 indication transformer, and L3 represents transformation
The secondary coil of device.Primary coil L2 is in parallel with resonance coil L1, two switches of secondary coil L3 and three end votage control switch S1
End series connection.
In Fig. 5 in the figure in left side, A, B represent two outfans of series resonance ring, and arrow represents that magnetic direction, S2 represent
Four end votage control switches, C1 represents that resonant capacitance, L1 represent resonance coil, the primary coil of L2 indication transformer, and L3 represents transformation
The secondary coil of device.Primary coil L2 is in parallel with resonance coil L1, two switches of secondary coil L3 and four end votage control switch S2
End series connection.
In Fig. 5 in the figure on right side, A, B represent two outfans of parallel resonance ring, and arrow represents that magnetic direction, S2 represent
Four end votage control switches, C1 represents that resonant capacitance, L1 represent resonance coil, the primary coil of L2 indication transformer, and L3 represents transformation
The secondary coil of device.Primary coil L2 is in parallel with resonance coil L1, two switches of secondary coil L3 and four end votage control switch S2
End series connection.
Buffer action due to transformator, it is only necessary to the side of secondary coil L3 is arranged one relatively " ", the most permissible
Thering is provided datum for three end votage control switch S1 or four end votage control switch S2, this datum is unrelated with resonant ring, therefore, and nothing
Opinion is three end votage control switch S1 or four end votage control switch S2, and resonant ring allows halfwave rectifier output, allows also to all wave rectification output.
In the present embodiment, described votage control switch is that IGBT manages or MOSFET manages or TRIAC pipe, or described votage control switch is
Two IGBT pipe differential concatenations or two MOSFET pipe differential concatenations or two TRIAC pipe differential concatenations.Selection mode is more, can
To select according to different situations.
In another embodiment of the present invention, it is provided that a kind of limiting control method, it is characterised in that be applied to above-mentioned amplitude limit
Control circuit, described method includes:
When needing to provide stable voltage, control described switch conduction.
Concrete, the described switch conduction of described control, specifically include:
The mode using the mode of manual off switch, the mode of input low and high level or pulse width modulation controls described
Switch conduction.
When switch is not votage control switch, use the mode of manual off switch can make switch conduction.When switch is pressure
During control switch, the mode of input low and high level or the mode of pulse width modulation is used to control described switch conduction.
It should be noted that when the mode using input low and high level controls described switch conduction, and concrete principle is:
When switch is for votage control switch, when controlling end input high level, two switch terminals conductings, connecting resistance is zero or close
In zero, the secondary coil of the most described transformator is shorted, and the inductance value of the primary coil of described transformator declines, whole circuit
Total inductance amount decline, original resonant condition is changed, amplitude change.When controlling end and being low level, two switch terminals are short
Road, offresistance is infinitely great, recovers original resonant condition, and amplitude changes.
When the mode using pulse width modulation controls described switch conduction, and concrete principle is:
Use the mode of pulse width modulation i.e. when switch terminals input pulse width modulated signal, thus it is possible to vary voltage-controlled to open
The break-make closed, when votage control switch turns on, connecting resistance is zero or close to zero, and the secondary coil of the most described transformator is short
Road, the inductance value of the primary coil of described transformator declines, and the total inductance amount of whole circuit declines, and original resonant condition is changed
Becoming, amplitude changes.When votage control switch turns off, offresistance is infinitely great, 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 pulse width adjust
The mode of system controls described switch conduction, and the secondary coil of the most described transformator is shorted, the primary coil of described transformator
Inductance value decline, the total inductance amount of whole circuit declines, and then resonant condition is changed, using the teaching of the invention it is possible to provide stable voltage or electricity
Stream, the problem solving driven resonant ring job insecurity.
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 apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (10)
1. an amplitude limit control circuit, it is characterised in that including:
Resonance coil, resonant capacitance, switch and transformator；
Described resonance coil and described resonant capacitance are in parallel or in series；The primary coil of described transformator and described resonance coil
In parallel；The secondary coil of described transformator is connected with described switch.
Circuit the most according to claim 1, it is characterised in that described switch is votage control switch；
Wherein, two switch terminals of described votage control switch are connected with the secondary coil of described transformator.
Circuit the most according to claim 2, it is characterised in that described votage control switch is IGBT pipe, the collection of described IGBT pipe
Electrode and extremely two switch terminals of transmitting.
Circuit the most according to claim 2, it is characterised in that described votage control switch is MOSFET pipe, and described MOSFET manages
Drain electrode and source electrode be two switch terminals.
Circuit the most according to claim 2, it is characterised in that described votage control switch is TRIAC pipe, described TRIAC pipe
Main electrode T1 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 concatenations, institute
State extremely two switch terminals of two current collections after two IGBT pipe differential concatenations.
Circuit the most according to claim 2, it is characterised in that described votage control switch is two MOSFET pipe differential concatenations,
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 concatenations, institute
Two main electrodes T2 after stating two TRIAC pipe differential concatenations are two switch terminals.
9. a limiting control method, it is characterised in that be applied to the amplitude limit as described in claim 1～8 any one and control
Circuit, 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 includes:
The mode using the mode of manual off switch, the mode of input low and high level or pulse width modulation controls described switch
Conducting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634365.9A CN106253495B (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 |
|---|---|---|---|
| CN201610634365.9A CN106253495B (en) | 2016-08-04 | 2016-08-04 | A kind of clipping control circuit and method |
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| CN106253495A true CN106253495A (en) | 2016-12-21 |
| CN106253495B CN106253495B (en) | 2019-06-21 |
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| CN201610634365.9A Active CN106253495B (en) | 2016-08-04 | 2016-08-04 | A kind of clipping control circuit and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306743A (en) * | 2020-03-02 | 2020-06-19 | 广东美的暖通设备有限公司 | Air conditioner and multi-split central air conditioner |
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| US20060261756A1 (en) * | 2005-05-17 | 2006-11-23 | Kotaro Matsui | Discharge lamp lighting circuit |
| CN103023335A (en) * | 2012-12-27 | 2013-04-03 | 万仁春 | LLC (logical link control) converter synchronous rectification method and device |
| CN104578345A (en) * | 2015-01-23 | 2015-04-29 | 山东大学 | Electromagnetic resonance type wireless charging device and control method based on CLL resonant transformation |
| CN206004421U (en) * | 2016-08-04 | 2017-03-08 | 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 CN201610634365.9A patent/CN106253495B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060261756A1 (en) * | 2005-05-17 | 2006-11-23 | Kotaro Matsui | Discharge lamp lighting circuit |
| CN103023335A (en) * | 2012-12-27 | 2013-04-03 | 万仁春 | LLC (logical link control) converter synchronous rectification method and device |
| CN104578345A (en) * | 2015-01-23 | 2015-04-29 | 山东大学 | Electromagnetic resonance type wireless charging device and control method based on CLL resonant transformation |
| CN206004421U (en) * | 2016-08-04 | 2017-03-08 | 中惠创智无线供电技术有限公司 | A kind of amplitude limit control circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306743A (en) * | 2020-03-02 | 2020-06-19 | 广东美的暖通设备有限公司 | Air conditioner and multi-split central air conditioner |
| CN111306743B (en) * | 2020-03-02 | 2021-06-18 | 广东美的暖通设备有限公司 | Air conditioner and multi-split central air conditioner |
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| CN106253495B (en) | 2019-06-21 |
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Denomination of invention: A limiting control circuit and method Granted publication date: 20190621 Pledgee: Huishang Bank Co.,Ltd. Fuyang Yingquan Branch Pledgor: ZONECHARGE (SHENZHEN) WIRELESS POWER TECHNOLOGY Co.,Ltd. Registration number: Y2024980029765 |
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