CN108199749A - Wireless portable communications system based on active clamping forward exciting converter - Google Patents
Wireless portable communications system based on active clamping forward exciting converter Download PDFInfo
- Publication number
- CN108199749A CN108199749A CN201810187649.7A CN201810187649A CN108199749A CN 108199749 A CN108199749 A CN 108199749A CN 201810187649 A CN201810187649 A CN 201810187649A CN 108199749 A CN108199749 A CN 108199749A
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- Prior art keywords
- wireless
- exciting converter
- active clamping
- communications system
- energy
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- 238000004891 communication Methods 0.000 title claims abstract description 35
- 230000008878 coupling Effects 0.000 claims abstract description 15
- 238000010168 coupling process Methods 0.000 claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000005284 excitation Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H04B5/79—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a kind of wireless portable communications system based on active clamping forward exciting converter, including timing modulation module, driving circuit, radiating circuit, radio energy receiving circuit, wireless signal receiving circuit；The high-frequency inverter that the radiating circuit includes input power, is connected with input power and includes transmitting coil, the radio energy receiving circuit includes energy acceptance coil, resonant capacitance, load, and the wireless signal receiving circuit includes signal receiving coil, resonant capacitance, wireless signal processing module.The present invention directly controls sequential in high-frequency inverter and adjusts harmonic energy, magnetic coupling wireless power is realized using the fundamental wave energy of the delta current wave flowed through in transmitting coil, realize that magnetic coupling wirelessly communicates using the harmonic energy of the delta current wave flowed through in transmitting coil, improve the power output capacity of wireless powering device, reduce communication module cost, reduce the size of radiating circuit, have broad application prospects.
Description
Technical field
The present invention relates to wireless portable communications system more particularly to a kind of wirelessly taking based on active clamping forward exciting converter
It can communication system.
Background technology
Non-radiation type magnetic coupling resonance is produced as novel radio power supply technique by the resonant object for making two identical frequencies
Life is very strong to intercouple, and there was only weaker coupling to the receiving terminal of disresonance frequence around.Magnetic coupling resonator system includes
Emit resonance coil, secondary reception resonance coil and load.
Wireless power application scenario usually requires to wirelessly communicate, according to energy stream and the realization method of information flow, main point
For single-stream mode and double-stream mode.Double-stream mode is implemented separately using energy stream with information flow, such as using bluetooth wireless device
Realize information flow, the cost is relatively high for this mode, and circuit is complicated.And single-stream mode using same covering device realize energy stream with
The multiplexing of information flow.
Traditional single-stream mode can influence the quality of wireless power when communicating, radio energy utilization rate is not high.Therefore it needs
Research, which is realized, wirelessly takes the efficiency operation circuit methods that can communicate, and wireless communication influences wireless power when solving single-stream mode work
The problem of quality.
Invention content
Goal of the invention：In view of the above problems, present invention proposition is a kind of wirelessly to take energy based on active clamping forward exciting converter
Communication system.
Technical solution：Purpose to realize the present invention, the technical solution adopted in the present invention are：One kind is based on active-clamp
The wireless portable communications system of excited inversion device, including radiating circuit, radio energy receiving circuit, wireless signal receiving circuit,
Timing modulation module, driving circuit；Wherein, the radiating circuit includes input power, is connected and includes with input power
The active clamping forward exciting converter of transmitting coil；The timing modulation module exports control signal to driving circuit；The driving
Circuit controls the switching device action sequence in the active clamping forward exciting converter according to control signal, to the transmitting coil
The controllable pulse voltage of dead time is transmitted, asymmetric voltage excitation waveform is formed in transmitting coil；The asymmetric voltage
Waveform forms the variable delta current wave of the constant waveform of frequency in transmitting coil, the fundametal compoment production in the delta current wave
Magnetisation field generates magnetic resonance coupling with radio energy receiving circuit, and radio energy receiving circuit receives what magnetic resonance coupling was transmitted
Fundamental wave energy realizes magnetic coupling resonance wireless power；The wireless signal receiving circuit receives transmitting coil delta current wave letter
Harmonic component in number realizes wireless communication.
The active clamp forward inverter parallel includes in the both ends of input power, the active clamping forward exciting converter
The bridge arm being made of first switch pipe and second switch pipe, the both ends of the transmitting coil be connected to input power anode and
The midpoint of bridge arm.The radiating circuit further includes an input capacitance for being parallel to input power both ends.The active clamping forward
Exciting converter further includes a clamping capacitance connected with first switch pipe.
The radio energy receiving circuit includes energy acceptance coil, the first resonant capacitance, load, the energy acceptance line
Circle is in parallel respectively with the first resonant capacitance, load.
The wireless signal receiving circuit includes signal receiving coil, the second resonant capacitance, wireless signal processing module, institute
Signal receiving coil is stated to be in parallel respectively with the second resonant capacitance, wireless signal processing module.
The timing modulation module is based on digit chip or analog chip is realized, generates asymmetric voltage excitation waveform.Base
Include sequentially connected microcontroller, low-pass filter, analog chip in the timing modulation module that analog chip is realized；Microcontroller produces
Raw PWM adjustable signals, PWM adjustable signals are by generating fixed DC level after low-pass filter, by the DC level signal
The analog chip of delta current wave clock signal can be generated by being transmitted to, the generation phase compared with the high frequency triangle wave inside analog chip
The driver' s timing signal answered.
Advantageous effect：The present invention generates delta current wave using active clamp forward inversion transformation technique in transmitting coil, leads to
The fundamental wave energy crossed in delta current wave realizes the method that wireless power, harmonic energy realize wireless communication function, for needing
For radio energy power supply occasion, realize high efficiency, high reliability, low-power consumption magnetic coupling wireless power and radio communication circuit
The solution of multiplexing.The circuit structure of the present invention is simple, at low cost without independent communication module；And without frequency conversion when communicating,
It is lighter to wireless power qualitative effects during wireless signals.
Description of the drawings
Fig. 1 is the realization circuit of the wireless portable communications system the present invention is based on active clamping forward exciting converter；
Fig. 2 is 3 subharmonic energy variations under the conditions of different duty of the present invention；
Fig. 3 is that the present invention is based on the power switch pipe sequential realization principle figures of analog chip generation delta current wave；
Fig. 4 is generation delta current wave control sequential in active clamping forward exciting converter of the present invention.
Specific embodiment
Technical scheme of the present invention is further described with reference to the accompanying drawings and examples.
As shown in Figure 1, the wireless portable communications system of the present invention based on active clamping forward exciting converter, including hair
Transmit-receive radio road, radio energy receiving circuit, wireless signal receiving circuit, timing modulation module, driving circuit.
The active clamping forward that radiating circuit includes input power V1, is connected with input power and includes transmitting coil L1
Exciting converter；Active clamp forward inverter parallel includes in the both ends of input power, active clamping forward exciting converter by first
The bridge arm of switching tube Q1 and second switch pipe Q2 compositions, the both ends of transmitting coil are connected to input power anode and bridge arm
Midpoint.Radiating circuit further includes an input capacitance C1 for being parallel to input power both ends and one connected with first switch pipe
Clamping capacitance C2.
Radio energy receiving circuit includes energy acceptance coil L2, the first resonant capacitance C3, load R, energy acceptance coil
It is in parallel respectively with the first resonant capacitance, load.Wireless signal receiving circuit includes signal receiving coil L3, the second resonant capacitance
C4, wireless signal processing module, signal receiving coil are in parallel respectively with the second resonant capacitance, wireless signal processing module.
Timing modulation module generates two path control signal to Q1, Q2, wherein the 1st tunnel controls signal to Q1, the 2nd tunnel control letter
Number give Q2.Switching device action sequence of the driving circuit in control signal control active clamping forward exciting converter, to transmitting
The controllable pulse voltage of coil transmission dead time, forms asymmetric voltage excitation waveform in transmitting coil；Asymmetric voltage
Waveform forms the variable delta current wave of the constant waveform of frequency in transmitting coil, and the fundametal compoment in delta current wave generates magnetic
, magnetic resonance coupling is generated with radio energy receiving circuit, radio energy receiving circuit receives the fundamental wave that magnetic resonance coupling is transmitted
Energy realizes magnetic coupling resonance wireless power；Wireless signal receiving circuit receives humorous in transmitting coil delta current wave signal
Wave component realizes wireless communication.
Timing modulation module can directly be generated 2 tunnels control signal by high-speed figure chip, also can generate 2 tunnels by analog chip
Control signal.Timing modulation module is consisted of the following parts based on the timing modulation module that analog chip is built：Using low cost
Microcontroller generate the adjustable signals of PWM, by generating fixed DC level, the direct current of different voltages after low-pass filter
The different duty ratios of flat corresponding driver' s timing signal, which, which is transmitted to, can generate delta current wave sequential letter
Number analog chip, corresponding Q1, Q2 driver' s timing signal is generated compared with the high frequency triangle wave inside analog chip.
Fourier space decomposition is carried out to transmitting coil terminal voltage rectangular wave：
Wherein, u (t) is the instantaneous value of voltage rectangular wave, VinFor direct current power source voltage, ω is the fundamental wave angle of voltage rectangular wave
Frequency, D are the duty ratios of switching tube Q1 conductings, and k is overtone order.It is understood to change duty ratio by formula (1), it is possible to which dynamic changes
The amplitude components of voltage rectangular wave each harmonic change the amplitude components of delta current wave each harmonic.
Timing modulation module exports high-frequency signal to driving circuit, and is provided needed for high-frequency work for Q1, Q2 switching tube
Driving force, timing modulation module is f to the switching frequency that switching tube Q1, Q2 are provided at this time1=2 π ω.Wherein, energy receives
Winding inductance quantity L2With resonance capacitance C3The coil frequency and f of decision1It is identical, i.e. f1=1/ (2 π √ (L2C3)).Due to transmitting
Field frequency in coil caused by electric current is identical with receiving coil frequency, therefore receiving coil L2Magnetic resonance biography can be received
The energy passed simultaneously passes to load.
When that need not communicate, timing modulation module ensures that delta current wave is not contained needed for communication caused by switching sequence
The harmonic energy wanted；When needing communication, timing modulation module ensures that delta current wave contains communication caused by switching sequence
Required harmonic energy.Signal receives circuit inductance amount L3With resonance capacitance C4The coil frequency of decision and harmonic frequency point
It is identical, such as 3 subharmonic 3f1=1/ (2 π √ (L3C4))。
The design parameter of the embodiment based on numerically controlled active clamping forward exciting converter of the present invention is as follows：Input electricity
Pressure V1 is 24VDC；Input capacitance 1000uF；Transmitting coil L1 is 11.78uH；Radio energy receiving coil L2 resonant inductance amounts are
11.78uH；Resonant capacitance value C3 is 54nF；Wireless communication signals receiving coil L3 resonant inductances amount is 89uH；Resonant capacitance value
C4 is 3.3nF；Switching tube Q1-Q2 is PSMN013100BS；Control chip is FPGA EP4CE6E22C8N；Driving chip is
UCC27211。
As shown in Fig. 2, the present invention 3 subharmonic energy variation under the conditions of different duty, the fundamental wave frequency of delta current wave
Rate is 200kHz, and duty ratio is respectively 0.667 and 0.64.Wherein, there is no 3 subharmonic energy when 1 duty ratio of operating point is 0.667
Amount, corresponding digital signals " 0 "；2 duty ratio of operating point has 3 subharmonic energy, corresponding digital signals " 1 " when being 0.664.Radio
The resonance coil Frequency point that can receive circuit is 200kHz, is used to implement the wireless transmission of fundamental wave energy.Wireless communication signals connect
Resonance coil Frequency point by circuit is 600kHz, for monitoring 3 subharmonic energy signals.It is switched when sequential modulation module controls
During sequential, then the Frequency point of fundamental wave energy does not change, and the change in duty cycle of switching sequence leads to the change of harmonic frequency point energy
Change, realize wireless communication.Therefore implementation method in this way, can realize the transmission of wireless communication signals, and to wirelessly supplying
The influence of electricity is preferably minimized.
As shown in figure 3, the power switch pipe sequential realization principle figure based on analog chip generation delta current wave, use are low
The microcontroller of cost generates the adjustable signals of PWM, and the adjustable signals of PWM are by generating fixed direct current after low-pass filter
Flat, the DC level of different voltages corresponds to the different duty ratio of driver' s timing signal, which, which is transmitted to, to produce
The analog chip of raw delta current wave clock signal, generates corresponding Q1, Q2 compared with the high frequency triangle wave inside analog chip
Driver' s timing signal.Energy is wirelessly taken based on active clamping forward exciting converter in this way, can be realized using analog chip
The low cost solution of communication system.
As shown in figure 4, the power switch pipe sequential of delta current wave is generated in active clamping forward exciting converter transmitting coil
Realize figure, it is seen that need to only use traditional control strategy that the dynamic control to switching sequence duty ratio can be realized.
By analyzing the duty ratio it is found that by controlling switching sequence above, you can realize that the radio energy of receiving coil passes
Defeated and wireless communication.Design in this way without individually constructing communication module, reduces the cost of system.
Claims (8)
1. a kind of wireless portable communications system based on active clamping forward exciting converter, it is characterised in that：Including radiating circuit, nothing
Line electric energy receiving circuit, wireless signal receiving circuit, timing modulation module, driving circuit；
Wherein, the active-clamp that the radiating circuit includes input power, is connected with input power and includes transmitting coil
Excited inversion device；
The timing modulation module exports control signal to driving circuit；The driving circuit has according to control signal control
Switching device action sequence in the clamp excited inversion device of source, the pulse electricity controllable to transmitting coil transmission dead time
Pressure, forms asymmetric voltage excitation waveform in transmitting coil；
The Asymmetric Electric corrugating forms the variable delta current wave of the constant waveform of frequency, the triangle electricity in transmitting coil
The fundametal compoment flowed in wave generates magnetic field, generates magnetic resonance coupling with radio energy receiving circuit, radio energy receiving circuit connects
The fundamental wave energy that magnetic resonance coupling is transmitted is received, realizes magnetic coupling resonance wireless power；The wireless signal receiving circuit receives hair
Harmonic component in ray circle delta current wave signal realizes wireless communication.
2. the wireless portable communications system according to claim 1 based on active clamping forward exciting converter, it is characterised in that：
In the both ends of input power, the active clamping forward exciting converter includes being opened by first the active clamp forward inverter parallel
The bridge arm of pipe and second switch pipe composition is closed, the both ends of the transmitting coil are connected in input power anode and bridge arm
Point.
3. the wireless portable communications system according to claim 2 based on active clamping forward exciting converter, it is characterised in that：
The radiating circuit further includes an input capacitance for being parallel to input power both ends.
4. the wireless portable communications system according to claim 2 based on active clamping forward exciting converter, it is characterised in that：
The active clamping forward exciting converter further includes a clamping capacitance connected with first switch pipe.
5. the wireless portable communications system according to claim 1 based on active clamping forward exciting converter, it is characterised in that：
The radio energy receiving circuit includes energy acceptance coil, the first resonant capacitance, load, the energy acceptance coil and first
Resonant capacitance, load are in parallel respectively.
6. the wireless portable communications system according to claim 1 based on active clamping forward exciting converter, it is characterised in that：
The wireless signal receiving circuit includes signal receiving coil, the second resonant capacitance, wireless signal processing module, and the signal connects
Take-up circle is in parallel respectively with the second resonant capacitance, wireless signal processing module.
7. the wireless portable communications system according to claim 1 based on active clamping forward exciting converter, it is characterised in that：
The timing modulation module is based on digit chip or analog chip is realized, generates asymmetric voltage excitation waveform.
8. the wireless portable communications system according to claim 7 based on active clamping forward exciting converter, it is characterised in that：
Sequentially connected microcontroller, low-pass filter, analog chip are included based on the timing modulation module that analog chip is realized；Microcontroller
PWM adjustable signals are generated, PWM adjustable signals are by generating fixed DC level after low-pass filter, by the direct current ordinary mail
Number the analog chip that can generate delta current wave clock signal is transmitted to, is generated compared with the high frequency triangle wave inside analog chip
Corresponding driver' s timing signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810187649.7A CN108199749B (en) | 2018-03-07 | 2018-03-07 | Wireless energy-carrying communication system based on active clamping forward inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810187649.7A CN108199749B (en) | 2018-03-07 | 2018-03-07 | Wireless energy-carrying communication system based on active clamping forward inverter |
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| Publication Number | Publication Date |
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| CN108199749A true CN108199749A (en) | 2018-06-22 |
| CN108199749B CN108199749B (en) | 2023-05-23 |
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| CN201810187649.7A Active CN108199749B (en) | 2018-03-07 | 2018-03-07 | Wireless energy-carrying communication system based on active clamping forward inverter |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100067259A1 (en) * | 2008-09-17 | 2010-03-18 | Delta Electronics, Inc. | Forward-flyback converter with active-clamp circuit |
| CN101692595A (en) * | 2009-09-21 | 2010-04-07 | 山特电子（深圳）有限公司 | Active clamping forward-flyback converter |
| CN103259343A (en) * | 2013-05-07 | 2013-08-21 | 南京邮电大学 | Magnetic coupling resonance wireless power supplying device using fundamental wave energy in high-frequency square wave |
| CN104779714A (en) * | 2015-03-24 | 2015-07-15 | 南京邮电大学 | High-speed wireless energy-carrying communication system |
| CN106655533A (en) * | 2016-10-21 | 2017-05-10 | 南京邮电大学 | Simultaneous wireless information and power transfer (SWIPT) system based on trapezoidal current wave |
-
2018
- 2018-03-07 CN CN201810187649.7A patent/CN108199749B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100067259A1 (en) * | 2008-09-17 | 2010-03-18 | Delta Electronics, Inc. | Forward-flyback converter with active-clamp circuit |
| CN101692595A (en) * | 2009-09-21 | 2010-04-07 | 山特电子（深圳）有限公司 | Active clamping forward-flyback converter |
| CN103259343A (en) * | 2013-05-07 | 2013-08-21 | 南京邮电大学 | Magnetic coupling resonance wireless power supplying device using fundamental wave energy in high-frequency square wave |
| CN104779714A (en) * | 2015-03-24 | 2015-07-15 | 南京邮电大学 | High-speed wireless energy-carrying communication system |
| CN106655533A (en) * | 2016-10-21 | 2017-05-10 | 南京邮电大学 | Simultaneous wireless information and power transfer (SWIPT) system based on trapezoidal current wave |
Non-Patent Citations (1)
| Title |
|---|
| 董朋: "基于非正弦电流波无线携能通信复用系统电路拓扑研究" * |
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