CN102931736A - Magnetic coupled resonance wireless supply power control system - Google Patents
Magnetic coupled resonance wireless supply power control system Download PDFInfo
- Publication number
- CN102931736A CN102931736A CN2012104885236A CN201210488523A CN102931736A CN 102931736 A CN102931736 A CN 102931736A CN 2012104885236 A CN2012104885236 A CN 2012104885236A CN 201210488523 A CN201210488523 A CN 201210488523A CN 102931736 A CN102931736 A CN 102931736A
- Authority
- CN
- China
- Prior art keywords
- circuit
- magnetic coupling
- load
- control
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention provides a magnetic coupled resonance wireless supply power control system, which comprises a control circuit, a drive circuit, a power supply, a switching tube, a magnetic coupled resonance circuit and a rectification filter circuit, wherein the control circuit outputs a high frequency signal to the drive circuit according to a set control rule; the drive circuit receives the high frequency signal of the control circuit, and provides the switching tube with drive capability required for high frequency work, and transfers the electric power of the power supply to the filter circuit through the magnetic coupled resonance circuit, and supplies direct-current energy to a load after rectification and filter by the rectification filter circuit; and the control rule is as follows: a control cycle is defined to be M times of the oscillation period of a resonance magnetic field emitted in the magnetic coupled resonance circuit, and in a cycle, after working in N magnetic field resonance periods, the drive circuit is switched off in the following M-N periods, and different average powers can be obtained on the receiving coil end of the magnetic coupled resonance circuit.
Description
Technical field
The present invention relates to is wireless energy transform device, is specifically related to a kind of magnetic coupling resonance wireless power power regulating system, relates in particular to the technical field that light modulation is provided for wireless power LED lamp.
Background technology
Non-radiation type magnetic coupling resonance produces very strong intercoupling as the novel radio power supply technique by the resonance object that makes two same frequencys, and to the coupling a little less than the receiving terminal of disresonance frequence only has on every side.The magnetic coupling resonator system comprises emission resonance coil, secondary reception resonance coil and load.
The Marin Soljacic assistant professor of MIT is the inventor of this system, and wireless power has been demonstrated by its MIT research group, and they have successfully lighted the 60W bulb from 2 meters distance.The magnetic coupling harmonic technology can be realized the Energy Transfer of middle distance (mid-range), and do not need to strengthen magnetic field intensity, and traditional magnetic coupling can only (generally at ten centimetres) obtain relatively good effect in short-range, and transmission range can only increase by strengthening magnetic field intensity.Simultaneously the magnetic resonance coupled system has a significant advantage can penetrate exactly the nonmetal barrier of various differences, and on not impacts of index such as the energy transmission efficiency of system, power.
In many fields that utilize the magnetic coupling harmonic technology to carry out wireless power, need to control and regulate for the power of radio energy.Such as, in magnetic coupling resonance wireless power LED application scenario, we need to regulate at the LED load end, and it is luminous to reach energy-conservation purpose.Therefore we need to study based on the power control of magnetic coupling resonance wireless power and control method, especially magnetic coupling resonance wireless power LED light-dimming method to come energy-conservation or reach expection light regulating effect.
Summary of the invention
Technical problem to be solved by this invention is for power control and the regulatory demand based on the magnetic coupling resonance wireless power that relate in the background technology, especially for magnetic coupling resonance wireless power LED application scenario, a kind of magnetic coupling resonance wireless power power control system of high reliability is proposed.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of magnetic coupling resonance wireless power power control system comprises control circuit, drive circuit, power supply, switching tube, magnetic coupling resonant circuit and current rectifying and wave filtering circuit; Wherein, described control circuit is exported high-frequency signal to drive circuit according to the control law of setting in a control cycle; The high-frequency signal of drive circuit reception control circuit, drive the switching tube conducting that is connected with the magnetic coupling resonant circuit, so that magnetic coupling resonant circuit work, become sine-wave current to be delivered to secondary circuit the electric energy of the power supply former limit circuit conversion by the magnetic coupling resonant circuit, described current rectifying and wave filtering circuit is the half-sinusoid electric current with the sine-wave current rectification of magnetic coupling resonant circuit transmission, obtains direct voltage again and offer load behind low frequency filtering; Wherein said control law is: the electromagnetic field couples harmonic period of M magnetic coupling resonant circuit is made as a control cycle, the output high-frequency signal is to drive circuit in N the harmonic period in M harmonic period, in all the other M-N harmonic period, do not export high-frequency signal to drive circuit, thereby realize that wireless power transmission is to the control of load-side average power; Wherein, M is the natural number greater than 0, and N is the natural number greater than 0, M〉N.
Further, a kind of magnetic coupling resonance wireless power power control system of the present invention, described load-side output average power
Described load-side electric current
P wherein
FullBe the full-load power of load-side, V
LoadRated voltage for load-side.
As the further preferred version of a kind of magnetic coupling resonance wireless power power control system of the present invention, described control circuit adopts programmable control chip.
As the further preferred version of a kind of magnetic coupling resonance wireless power power control system of the present invention, described control circuit adopts DSP TMS320F2812 programmable control chip.
As the further preferred version of a kind of magnetic coupling resonance wireless power power control system of the present invention, described drive circuit adopts the high-frequency drive chip.
As the further preferred version of a kind of magnetic coupling resonance wireless power power control system of the present invention, described drive circuit adopts IR2100 to drive chip.
As the further preferred version of a kind of magnetic coupling resonance wireless power power control system of the present invention, described load is T LED lamp serial or parallel connection, and T is natural number; Realize the brightness adjustment control of LED lamp by the described control law of control circuit.
As the further preferred version of a kind of magnetic coupling resonance wireless power power control system of the present invention, described magnetic coupling resonator system comprises the emission resonance coil, receives resonance coil; Wherein, described emission resonance coil comprises former limit winding, first resonant capacitance of coupling inductance, and described reception resonance coil comprises secondary winding, second resonant capacitance of coupling inductance; The product of the inductance value of described former limit winding and the capacitance of the first resonant capacitance equals the product of the capacitance of the inductance value of secondary winding and the second resonant capacitance;
The Same Name of Ends of described former limit winding is connected with the positive pole of power supply, an end of the first resonant capacitance respectively, the different name end of former limit winding is connected with the other end of the first resonant capacitance, the drain electrode of switching tube respectively, the grid of described switching tube is connected with the signal output part of described drive circuit, ground connection after the source electrode of described switching tube is connected with the negative pole of power supply;
The Same Name of Ends of the Same Name of Ends of described secondary winding and former limit winding in the same way; The two ends of described the second resonant capacitance respectively with the Same Name of Ends of secondary winding with after the different name end is connected, the input of access current rectifying and wave filtering circuit.
As the further preferred version of a kind of magnetic coupling resonance wireless power power control system of the present invention, described current rectifying and wave filtering circuit comprises rectification circuit and filter circuit; Wherein said rectification circuit comprises first to fourth electric capacity, and described the first electric capacity, the 3rd electric capacity are composed in series the first brachium pontis mutually, and described the second electric capacity, the 4th electric capacity are composed in series the second brachium pontis mutually; Be connected with the input of filter circuit after described the one the second brachium pontis are parallel with one another; The mid point of described the first brachium pontis, the mid point of the second brachium pontis are respectively as the input of current rectifying and wave filtering circuit;
Described filter circuit comprises filter inductance and filter capacitor, one end of wherein said filter inductance is connected with the output of rectification circuit, the other end of described filter inductance is connected with an end of filter capacitor, the current input terminal of load respectively, ground connection after the other end of described filter capacitor is connected with the current output terminal of load.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
Magnetic coupling resonance wireless power power control system of the present invention has advantages of simple in structure, need not to provide the light modulation feedback signal, can be widely used in wireless power simultaneously and need the occasions such as average power control, is not limited to LED open loop light modulation field.
Description of drawings
Fig. 1 is that magnetic coupling resonance wireless power LED open loop light modulation realizes circuit.
Fig. 2 is that the electromagnetic wave in magnetic coupling resonance when normal operation of preferred embodiment of the present invention transmits energy.
Fig. 3 is a kind of magnetic coupling resonance device wireless power LED open loop light modulation principle schematic (M=8, N=4) of preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is described in further detail:
As shown in Figure 1, the preferred embodiments of the present invention, radiating circuit is by DC power supply V1, switching tube Q1, transmitting coil L1, transmitting coil resonant capacitance C1 consists of; Receiving circuit is receiving coil L2, receiving coil resonant capacitance C2 and rectification circuit filter circuit and load LED lamp, and wherein current rectifying and wave filtering circuit comprises diode D1D4, filter inductance L3, filter capacitor C3.Wherein the product of the inductance value of transmitting coil L1, resonant capacitance C1 capacitance is identical with the product of receiving coil L2 inductance value, resonant capacitance C2 capacitance.
Control circuit output high-frequency signal is to drive circuit, and the resonance frequency of former limit transmitting coil is
Drive circuit reception control circuit high-frequency signal, and for the Q1 switching tube provides high-frequency work required driving force, this moment, control circuit was similarly f to the switching frequency that Q1 provides
1Because at receiving terminal coil L
1C
1=L
2C
2, so receiving coil L2 can receive the energy of magnetic resonance transmission and provide direct current energy for load LED lamp behind rectification circuit.The conducting of control signal control switch pipe Q1 realizes the average power control of wireless power transmission.
The design parameter of preferred embodiment of the present invention is as follows: input voltage V1 is 24VDC; Transmitting coil L1 and receiving coil L2 resonant inductance amount are 22uH; Resonant capacitance value C1, C2 are 470nF; Filter inductance L3 is 220uF, and filter capacitor is 1000uF; Switching tube Q1 is IPB108N15N3G; Rectifier diode D1-D4 is BYG22D; The chip that control circuit adopts is DSP TMS320F2812; The chip that drive circuit adopts is IR2100.
As shown in Figure 2, it has provided magnetic coupling oscillating magnetic field transferring energy feature schematic diagram.For the convenient this patent thought that embodies, only define per 8 magnetic field resonance oscillations cycle f among Fig. 2
1Be the defined control cycle of this patent, i.e. N=8f
1In fact we can define any a plurality of magnetic fields resonance oscillations cycle as a control cycle to reach best control effect.
As shown in Figure 3, it has provided (M=8, N=4) schematic diagram under a kind of working condition of preferred embodiment of the present invention.Control circuit provides high-frequency signal f among Fig. 3
1, realize simultaneously the transmission of magnetic resonance energy by control switch pipe Q1.When drive circuit carries out HF switch control f to switching tube Q1
1, the resonance frequency of former limit transmitting coil is
Transmit radio energy this moment; When switching tube Q1 is in off state all the time, can not transmit radio energy at this moment.
Because the pressure drop V of LED fluorescent tube under different operating currents
LEDCan think approximate constant, definition full load electric current is I
LED, power is P
Full, then be easy to get:
P
full=V
LEDI
LED （1）
If adopt the used dimming controlling method of this patent, take M harmonic period as a control cycle, send N harmonic period electromagnetic wave to load end, then be easy to get:
Convolution (1) (2) as can be known, for M and the N of any definition, being easy to get can obtain the light modulation electric current and be:
We illustrate and are defined in M=8 electromagnetic wave and only have N=4 periodic transfer radio energy in cycle of oscillation in Fig. 3, and namely average power is half of full-load power, and the electric current that therefore can realize LED light is half of full-load current.
By above analysis as can be known, we are a control cycle by defining any M electromagnetic viscosimeter cycle, only send N electromagnetic wave cycle of oscillation in the control cycle of definition, (for example M=1000, the combination in any such as N=650) can realize the LED load is realized the dimming effect expected.By such design, just can realize the open loop light modulation of radio energy power supply LED, improved system reliability.
For the AC load circuit that need not rectification, we can directly utilize formula (2) to obtain different power outputs.
Claims (10)
1. a magnetic coupling resonance wireless power power control system is characterized in that: comprise control circuit, drive circuit, power supply, switching tube, magnetic coupling resonant circuit and current rectifying and wave filtering circuit; Wherein, described control circuit is exported high-frequency signal to drive circuit according to the control law of setting in a control cycle; The high-frequency signal of drive circuit reception control circuit, drive the switching tube conducting that is connected with the magnetic coupling resonant circuit, so that magnetic coupling resonant circuit work, become sine-wave current to be delivered to secondary circuit the electric energy of the power supply former limit circuit conversion by the magnetic coupling resonant circuit, described current rectifying and wave filtering circuit is the half-sinusoid electric current with the sine-wave current rectification of magnetic coupling resonant circuit transmission, obtains direct voltage again and offer load behind low frequency filtering; Wherein said control law is: the electromagnetic field couples harmonic period of M magnetic coupling resonant circuit is made as a control cycle, the output high-frequency signal is to drive circuit in N the harmonic period in M harmonic period, in all the other M-N harmonic period, do not export high-frequency signal to drive circuit, thereby realize that wireless power transmission is to the control of load-side average power; Wherein, M is the natural number greater than 0, and N is the natural number greater than 0, M〉N.
2. a kind of magnetic coupling resonance wireless power power control system according to claim 1 is characterized in that: described control circuit employing programmable control chip.
3. a kind of magnetic coupling resonance wireless power power control system according to claim 2, it is characterized in that: described programmable control chip is DSP TMS320F2812 programmable control chip.
4. a kind of magnetic coupling resonance wireless power power control system according to claim 1 is characterized in that: described drive circuit employing high-frequency drive chip.
5. a kind of magnetic coupling resonance wireless power power control system according to claim 4 is characterized in that: described high-frequency drive chip is that IR2100 drives chip.
6. a kind of magnetic coupling resonance wireless power power control system according to claim 1 is characterized in that: described load-side output average power
P wherein
FullFull-load power for load-side.
7. a kind of magnetic coupling resonance wireless power power control system according to claim 1 is characterized in that: described load-side electric current
P wherein
FullBe the full-load power of load-side, V
LoadRated voltage for load-side.
8. a kind of magnetic coupling resonance wireless power power control system according to claim 1, it is characterized in that: described load is T LED lamp serial or parallel connection, and T is natural number; Realize the brightness adjustment control of LED lamp by the described control law of control circuit.
9. a kind of magnetic coupling resonance wireless power power control system according to claim 1 is characterized in that: described magnetic coupling resonator system comprises the emission resonance coil, receives resonance coil; Wherein, described emission resonance coil comprises former limit winding, first resonant capacitance of coupling inductance, and described reception resonance coil comprises secondary winding, second resonant capacitance of coupling inductance; The product of the inductance value of described former limit winding and the capacitance of the first resonant capacitance equals the product of the capacitance of the inductance value of secondary winding and the second resonant capacitance;
The Same Name of Ends of described former limit winding is connected with the positive pole of power supply, an end of the first resonant capacitance respectively, the different name end of former limit winding is connected with the other end of the first resonant capacitance, the drain electrode of switching tube respectively, the grid of described switching tube is connected with the signal output part of described drive circuit, ground connection after the source electrode of described switching tube is connected with the negative pole of power supply;
The Same Name of Ends of the Same Name of Ends of described secondary winding and former limit winding in the same way; The two ends of described the second resonant capacitance respectively with the Same Name of Ends of secondary winding with after the different name end is connected, the input of access current rectifying and wave filtering circuit.
10. a kind of magnetic coupling resonance wireless power power control system according to claim 1, it is characterized in that: described current rectifying and wave filtering circuit comprises rectification circuit and filter circuit; Wherein said rectification circuit comprises first to fourth electric capacity, and described the first electric capacity, the 3rd electric capacity are composed in series the first brachium pontis mutually, and described the second electric capacity, the 4th electric capacity are composed in series the second brachium pontis mutually; Be connected with the input of filter circuit after described the one the second brachium pontis are parallel with one another; The mid point of described the first brachium pontis, the mid point of the second brachium pontis are respectively as the input of current rectifying and wave filtering circuit;
Described filter circuit comprises filter inductance and filter capacitor, one end of wherein said filter inductance is connected with the output of rectification circuit, the other end of described filter inductance is connected with an end of filter capacitor, the current input terminal of load respectively, ground connection after the other end of described filter capacitor is connected with the current output terminal of load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104885236A CN102931736A (en) | 2012-11-26 | 2012-11-26 | Magnetic coupled resonance wireless supply power control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104885236A CN102931736A (en) | 2012-11-26 | 2012-11-26 | Magnetic coupled resonance wireless supply power control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102931736A true CN102931736A (en) | 2013-02-13 |
Family
ID=47646473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104885236A Pending CN102931736A (en) | 2012-11-26 | 2012-11-26 | Magnetic coupled resonance wireless supply power control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102931736A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104124863A (en) * | 2013-04-28 | 2014-10-29 | 海尔集团技术研发中心 | Method and system for power factor correction based on radio energy transmission system |
| CN106158331A (en) * | 2016-08-16 | 2016-11-23 | 路丝拓戈（上海）照明系统有限公司 | Wireless power method and system and coupled inductor thereof |
| CN106559938A (en) * | 2017-01-16 | 2017-04-05 | 京东方科技集团股份有限公司 | A kind of light fixture, lamp socket and illuminator |
| CN106954309A (en) * | 2017-04-20 | 2017-07-14 | 南京邮电大学 | A kind of wireless power LED illumination System Color control circuit and method |
| CN107027217A (en) * | 2017-04-24 | 2017-08-08 | 苏州合欣美电子科技有限公司 | A kind of LED circuit of wireless power |
| CN107104415A (en) * | 2017-04-24 | 2017-08-29 | 苏州合欣美电子科技有限公司 | A kind of overtemperature protection LED circuit of wireless power |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316053A (en) * | 2008-06-04 | 2008-12-03 | 哈尔滨工业大学 | Magnetic coupling resonance vibration type wireless energy transform device |
| CN101395791A (en) * | 2006-03-06 | 2009-03-25 | 皇家飞利浦电子股份有限公司 | Supply circuit and device comprising a supply circuit |
| US20120235507A1 (en) * | 2011-02-15 | 2012-09-20 | Sungkyunkwan University Foundation For Corporate Collaboration | Apparatus and method for high efficiency variable power transmission |
| US20120280575A1 (en) * | 2011-05-04 | 2012-11-08 | Samsung Electronics Co., Ltd. | Wireless power transmission and reception system |
-
2012
- 2012-11-26 CN CN2012104885236A patent/CN102931736A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101395791A (en) * | 2006-03-06 | 2009-03-25 | 皇家飞利浦电子股份有限公司 | Supply circuit and device comprising a supply circuit |
| CN101316053A (en) * | 2008-06-04 | 2008-12-03 | 哈尔滨工业大学 | Magnetic coupling resonance vibration type wireless energy transform device |
| US20120235507A1 (en) * | 2011-02-15 | 2012-09-20 | Sungkyunkwan University Foundation For Corporate Collaboration | Apparatus and method for high efficiency variable power transmission |
| US20120280575A1 (en) * | 2011-05-04 | 2012-11-08 | Samsung Electronics Co., Ltd. | Wireless power transmission and reception system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124863A (en) * | 2013-04-28 | 2014-10-29 | 海尔集团技术研发中心 | Method and system for power factor correction based on radio energy transmission system |
| 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 |
| CN103259343B (en) * | 2013-05-07 | 2015-09-16 | 南京邮电大学 | Utilize the magnetic coupling resonance wireless power supply of first-harmonic energy in high frequency square wave |
| CN106158331A (en) * | 2016-08-16 | 2016-11-23 | 路丝拓戈（上海）照明系统有限公司 | Wireless power method and system and coupled inductor thereof |
| CN106559938A (en) * | 2017-01-16 | 2017-04-05 | 京东方科技集团股份有限公司 | A kind of light fixture, lamp socket and illuminator |
| CN106559938B (en) * | 2017-01-16 | 2018-09-04 | 京东方科技集团股份有限公司 | A kind of lamps and lanterns, lamp holder and lighting system |
| CN106954309A (en) * | 2017-04-20 | 2017-07-14 | 南京邮电大学 | A kind of wireless power LED illumination System Color control circuit and method |
| CN107027217A (en) * | 2017-04-24 | 2017-08-08 | 苏州合欣美电子科技有限公司 | A kind of LED circuit of wireless power |
| CN107104415A (en) * | 2017-04-24 | 2017-08-29 | 苏州合欣美电子科技有限公司 | A kind of overtemperature protection LED circuit of wireless power |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102931736A (en) | Magnetic coupled resonance wireless supply power control system | |
| CN103259343B (en) | Utilize the magnetic coupling resonance wireless power supply of first-harmonic energy in high frequency square wave | |
| CN202475041U (en) | Resonant derivation ring | |
| CN103580301B (en) | A kind of wireless power transmission power control system and method | |
| CN104779714B (en) | A kind of high-speed radio portable communications system | |
| CN105429313A (en) | Wireless electric energy transmission system with switchable resonance compensation topology and control method thereof | |
| CN103208849B (en) | A kind of charging device | |
| CN203261132U (en) | Wireless power supply device employing fundamental wave magnetic coupling resonance | |
| CN202721199U (en) | A wirelessly-power-supplied OLED device | |
| CN103078414A (en) | Wireless electric energy transmission device with controllable transmission power and method | |
| CN201667749U (en) | LED dimming control system | |
| CN203340347U (en) | LED power source suitable for driving electronic ballast | |
| CN102665339A (en) | Induction type wireless energy transmission light emitting diode (LED) drive circuit | |
| CN104135794A (en) | Driving circuit of LED (Light Emitting Diode), and display device | |
| CN204465154U (en) | A kind of high-speed radio is taken can communicator | |
| CN106487105B (en) | A kind of magnet coupled resonant type wireless power transfer of modified line coil structures | |
| CN204013246U (en) | High-frequency and high-voltage sinewave output power supply | |
| CN206640844U (en) | A kind of wireless power LED illumination System | |
| CN204243917U (en) | Based on the device of the magnetic coupling resonance wireless energy transfer of repeat circuit | |
| CN203039440U (en) | Wireless electric energy transmission apparatus with controllable transmission power | |
| CN109818427A (en) | The output modulation circuit and its metal-oxide-semiconductor control method of wireless power transmission systems receiving side | |
| CN209516748U (en) | A kind of output modulation circuit of wireless power transmission systems receiving side | |
| CN203151238U (en) | Multi-reception-end magnetic coupling wireless energy transmission system | |
| CN202663596U (en) | Induction type wireless energy transmission LED drive circuit | |
| CN103368281A (en) | Resonant radio energy transmitting device with PFC (power factor correction) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |