CN103248139A - Magnetic coupling resonant wireless electric energy transmitting device having electricity larceny prevention function - Google Patents
Magnetic coupling resonant wireless electric energy transmitting device having electricity larceny prevention function Download PDFInfo
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- CN103248139A CN103248139A CN2013102085955A CN201310208595A CN103248139A CN 103248139 A CN103248139 A CN 103248139A CN 2013102085955 A CN2013102085955 A CN 2013102085955A CN 201310208595 A CN201310208595 A CN 201310208595A CN 103248139 A CN103248139 A CN 103248139A
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Abstract
The invention discloses a magnetic coupling resonant wireless electric energy transmitting device having an electricity larceny prevention function. The magnetic coupling resonant wireless electric energy transmitting device comprises a transmitting device and a receiving device consisting of the same spiral coils and adjustable capacitors which are connected in series, wherein an adjusting device is connected to the transmitting device and the receiving device respectively, and is used for adjusting the capacitance values of the adjustable capacitors; the output end of the receiving device is connected with a detection control device for detecting the power of a current load, transmitting the load power to an electricity larceny prevention controller through a wireless receiving and transmitting module, receiving a frequency adjusting signal transmitted by the electricity larceny prevention controller, and sending a capacitance adjusting command to the receiving end adjusting device; and the electricity larceny prevention controller is used for comparing the load power with the power supply output power, judging whether a system is in an electricity larceny state, and transmitting a resonant frequency adjustment control signal to a power supply and adjusting devices to change the resonant frequency of the system and avoiding keeping in the electricity larceny state continuously; and when necessary, an alarm can be made to draw the attention of relevant personnel, so that stable transmission of electric energy is ensured.
Description
Technical field
The present invention relates to power electronic technology and electromagnetism field, especially be applicable to the wireless power transmission application scenario when in magnet coupled resonant type wireless electric energy transmission course, easily stealing taking place.
Background technology
A demonstration has openly been done by the physics assistant professor Marin Solijacic of masschusetts, u.s.a Polytechnics in 2007 and his research team, utilize the resonance coupling technique successfully to light the bulb of a 60W at 2 meters, the wireless power transmission of resonance coupling from then on technology becomes the focus of research gradually.This technology has that efficiency of transmission height, power are big, distance, to characteristics such as the dependence of medium are little, for a new direction has been opened up in the research of intermediate range wireless power transmission technology.Emitter must have identical self-resonant frequency with receiving system in the magnet coupled resonant type wireless electric energy transmission system, and emission power sends the energy of same frequency, by magnetic coupling resonance energy is transferred to receiving terminal from transmitting terminal continuously.
This technology has realized the transmission of short-distance and medium-distance electric energy with higher efficient, but when having one or more self-resonant frequencies device identical with the system resonance frequency or load near the receiving terminal, meeting produces stronger magnetic coupling resonance phenomena with transmitting terminal and electric energy is absorbed equally, causes under the unwitting state of the user of system stealing electricity phenomenon taking place.
Summary of the invention
The technical problem that solves: at the deficiencies in the prior art, the invention provides a kind of magnet coupled resonant type wireless power transfer that possesses anti-stealing electricity function, solve in based on magnet coupled resonant type wireless electric energy transmission course, occur because of near exist identical resonance frequency device or load to launch stealing electricity phenomenon.
Technical scheme: for solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of magnet coupled resonant type wireless power transfer that possesses anti-stealing electricity function comprises regulated power supply, emitter, receiving system, detection control apparatus and controller for preventing illegal use of electricity; Described emitter and receiving system structure are identical, include helical coil, tunable capacitor and adjusting device, described helical coil and tunable capacitor series connection, and described adjusting device is regulated control to tunable capacitor; Described regulated power supply is powered to emitter, described emitter and the coupling of receiving system resonance, electric energy and supply load that described receiving system receiving and transmitting unit sends; Described detection control apparatus sends to controller for preventing illegal use of electricity for detection of bearing power and with bearing power, receives frequency adjustment control signal that controller for preventing illegal use of electricity sends simultaneously and sends the capacitance adjustment order to the receiving terminal adjusting device; Described controller for preventing illegal use of electricity compares regulated power supply power output and bearing power, judge whether system effectiveness reaches setting threshold, and send the frequency of resonance frequency adjusting control signal control regulated power supply and the appearance value that adjusting device is regulated tunable capacitor (2) according to judged result.
In the present invention, further, the regulation stall of described tunable capacitor has more than 3 grades.Described tunable capacitor makes system can be operated in 3 and above resonant frequency point simultaneously, makes the system resonance frequency-tuning range have certain amount of being imbued with, and makes system reach higher efficient simultaneously.
In the present invention, further, the two helical coil co-axially align of described emitter and receiving system, fixed distance.
In the present invention, further, described detection control apparatus sends to controller for preventing illegal use of electricity by radio receiving transmitting module with bearing power.
In the present invention, further, described adjusting device adopts digital control model, rotates the corresponding number of turns or angle by receiving resonance frequency adjusting control signal driving servomotor, and the adjustable side that servomotor drives tunable capacitor changes the appearance value.
In the present invention, further, described radio receiving transmitting module adopts the radio frequency serial communication mode.Realize the transmitted in both directions of control signal and detection signal.
In the present invention, further, described controller for preventing illegal use of electricity has warning system.Send warning when described controller for preventing illegal use of electricity judgement generation stealing electricity phenomenon and resonance frequency at different levels have all been used, remind the related personnel to note, prevent that stealing electricity phenomenon from continuing to carry out.
Beneficial effect: the present invention is by detecting relatively bearing power and output power of power supply in real time, and whether judgment means is in the stealing state, in time adjusts the resonance frequency of power supply, emitter, receiving system, avoids continuing to be in the stealing state.This invention has solved near the shortcoming that has identical resonance frequency device or load effect magnetic coupling resonance wireless electric energy transmission device is subjected to easily, by changing building-out capacitor regulating system resonance frequency the stealing state can't be continued, guaranteed the stable transfer of electric energy.
Description of drawings
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is adjustment device work schematic diagram among the present invention;
Fig. 3 is controller for preventing illegal use of electricity workflow schematic diagram among the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation.
As shown in Figure 1, a kind of magnet coupled resonant type wireless power transfer that possesses anti-stealing electricity function is made up of regulated power supply 5, emitter 3, receiving system 4, detection control apparatus 8, radio receiving transmitting module 9, controller for preventing illegal use of electricity 10 and load 6.Regulated power supply 5 links to each other with emitter 3, and being used for providing energy, and regulated power supply 5 has frequency and adjustable power function, can accept the adjusting that numeric control command carries out frequency or power.Emitter 3 is identical with receiving system 4 structures, include helical coil 1, tunable capacitor 2 and adjusting device 7, the wireless power transmission model adopts the string crosstalk to hold collocation structure, i.e. helical coil 1 and tunable capacitor 2 series connection, and 7 pairs of tunable capacitors 2 of described adjusting device are regulated control.Both helical coil 1 strict co-axially align and fixed distance of emitter 3 and receiving system 4 guarantee that the transmission of energy between the two has fixing efficient.According to application feature and the power requirement of load, the number of turn and the diameter of the helical coil 1 of emitter 3 and receiving system 4 designed accordingly, the transmission range between described emitter 3 and the receiving system 4 also can be adjusted.The capacitance adjustment progression of tunable capacitor 2 has more than 3 grades, makes system can be operated in 3 and above resonant frequency point simultaneously, makes the system resonance frequency-tuning range have certain surplus capacity, makes system reach higher efficient simultaneously.1 pair of emitter 3 of described regulated power supply is powered, described emitter 3 and the coupling of receiving system 4 resonance, electric energy and supply load 6 that described receiving system 4 receiving and transmitting units 3 send.Detection control apparatus 8 sends to controller for preventing illegal use of electricity 10 for detection of bearing power and with bearing power by radio receiving transmitting module 9; This radio receiving transmitting module 9 adopts the radio frequency serial communication mode, can carry out the transmitted in both directions of signal; 10 pairs of regulated power supply 5 power outputs of described controller for preventing illegal use of electricity and bearing power compare, judge whether system effectiveness reaches setting threshold, and send resonance frequency according to judged result and regulate the appearance value that control signal regulating and controlling device 7 is regulated tunable capacitors 2, the frequency of regulating and controlling regulated power supply 5 simultaneously.
As shown in Figure 2, adjusting device 7 of the present invention is made up of controller 11, servomotor 12 and storage battery 13, and storage battery 13 is supplied with for controller 11 and servomotor 12 provide electric energy.Described adjusting device 7 adopts digital control pattern, by receiving the resonance frequency control signal, controller 11 is regulated the appearance value that control signal converses building-out capacitor according to resonance frequency, and then change the pwm signal that changes into control servomotor 12 speed, and be transferred to servomotor 12 and carry out the corresponding number of turns and regulate
,The adjustable side that servomotor 12 drives tunable capacitor 2 changes the appearance value, and then changes the self-resonant frequency of emitter 3 and receiving system 4.
As shown in Figure 3, setting tunable capacitor 2 initial adjustment progression is n, and detection control apparatus 8 is with the power P of load
LBe transferred to controller for preventing illegal use of electricity 10 by radio receiving transmitting module 9, power P
SBe transferred to controller for preventing illegal use of electricity 10 by serial line connection, after controller for preventing illegal use of electricity 10 start with bearing power P
LWith output power of power supply P
SRelatively draw the efficiency eta of system, with system effectiveness η and setting threshold η
MinRelatively, carry out condition judgment: if η〉η
Min, then the return information section of beginning is got new bearing power P
LWith output power of power supply P
SContinue to calculate η and judge; If η＜η
Min, the adjusting progression n of tunable capacitor 2 is added 1, if n has surpassed the maximum progression n of the adjusting of tunable capacitor
Max, then send the warning message of system works mistake; If untapped resonance frequency is still arranged, then can carry out the resonance frequency adjustment, described controller for preventing illegal use of electricity 10 sends resonance frequency adjusting control signal to adjusting device 7 and the radio receiving transmitting module 9 of regulated power supply 5, emitter 3, described radio receiving transmitting module 9 sends the frequency adjustment control signal detection control apparatus of receiver side to, and regulating system is in another resonance frequency; The return information section of beginning again repeats above-mentioned judgement afterwards.
During device work, send the alternating current with certain frequency by regulated power supply 5, emitter 3 and receiving system 4 are operated under this resonance frequency, give load 6 with electrical energy transfer.Detection control apparatus 8 detects the power of load, pass to controller for preventing illegal use of electricity 10 by radio receiving transmitting module 9, controller for preventing illegal use of electricity 10 relatively its output power of power supply that records draws system effectiveness with the bearing power that receives, if system effectiveness is lower than preset threshold, and this fashion has untapped resonance frequency, then controller for preventing illegal use of electricity 10 is to regulated power supply 5, the adjusting device of emitter 3 and radio receiving transmitting module 9 send resonance frequency and regulate control signal, wireless transmitter 9 sends the frequency adjustment control signal detection control apparatus of receiver side to, by changing regulated power supply 5 simultaneously, the building-out capacitor of the building-out capacitor of emitter 3 and receiving system 4 is regulated the resonance frequency of whole system.Resonance frequency at different levels has all been used if stealing electricity phenomenon judge to take place, and then controller for preventing illegal use of electricity 10 sends warning, reminds the related personnel to note, avoid because of near have an identical resonance frequency device or load cause magnetic coupling resonance to cause the loss of electric energy.
The above only is preferred implementation of the present invention; be noted that for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a magnet coupled resonant type wireless power transfer that possesses anti-stealing electricity function is characterized in that: comprise regulated power supply (5), emitter (3), receiving system (4), detection control apparatus (8) and controller for preventing illegal use of electricity (10); Described emitter (3) and receiving system (4) structure are identical, include helical coil (1), tunable capacitor (2) and adjusting device (7), described helical coil (1) and tunable capacitor (2) series connection, described adjusting device (7) is regulated control to tunable capacitor (2); Described regulated power supply (1) is powered to emitter (3), described emitter (3) and the coupling of receiving system (4) resonance, the electric energy that described receiving system (4) receiving and transmitting unit (3) sends and supply load (6); Described detection control apparatus (8) sends to controller for preventing illegal use of electricity (10) for detection of bearing power and with bearing power, receives resonance frequency conditioning signal that controller for preventing illegal use of electricity (10) sends simultaneously and sends the capacitance adjustment order to the receiving terminal adjusting device; Described controller for preventing illegal use of electricity (10) compares regulated power supply (5) power output and bearing power, judge whether system effectiveness reaches setting threshold, and send the frequency of resonance frequency adjusting control signal adjusting regulated power supply (5) and the appearance value that regulating and controlling device (7) is regulated tunable capacitor (2) according to judged result.
2. a kind of magnet coupled resonant type wireless power transfer that possesses anti-stealing electricity function according to claim 1, it is characterized in that: the regulation stall of described tunable capacitor (2) has more than 3 grades.
3. a kind of magnet coupled resonant type wireless power transfer that possesses anti-stealing electricity function according to claim 1 is characterized in that: the two helical coil (1) co-axially align of described emitter (3) and receiving system (4), fixed distance.
4. a kind of magnet coupled resonant type wireless power transfer that possesses anti-stealing electricity function according to claim 1, it is characterized in that: described detection control apparatus (8) sends to controller for preventing illegal use of electricity (10) by radio receiving transmitting module (9) with bearing power.
5. a kind of magnet coupled resonant type wireless power transfer that possesses anti-stealing electricity function according to claim 1, it is characterized in that: described adjusting device (7) adopts digital control model, regulate control signal driving servomotor (12) the corresponding number of turns of rotation or angle by receiving resonance frequency, the adjustable side that servomotor (12) drives tunable capacitor (2) changes the appearance value.
6. a kind of magnet coupled resonant type wireless power transfer that possesses anti-stealing electricity function according to claim 2 is characterized in that: described radio receiving transmitting module (9) employing radio frequency serial communication mode.
7. a kind of magnet coupled resonant type wireless power transfer that possesses anti-stealing electricity function according to claim 1, it is characterized in that: described controller for preventing illegal use of electricity (10) has warning system.
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| CN103618608A (en) * | 2013-12-02 | 2014-03-05 | 西南交通大学 | Multi-load validity judgment method of wireless power supply system |
| CN104215239A (en) * | 2014-08-29 | 2014-12-17 | 西北工业大学 | Vision-based autonomous unmanned plane landing guidance device and method |
| CN105226846A (en) * | 2014-06-13 | 2016-01-06 | 英派尔科技开发有限公司 | The resonance power transmission of frequency change coding |
| CN105958667A (en) * | 2016-06-03 | 2016-09-21 | 东南大学 | Maximum efficiency point tracking method for bidirectional wireless electric energy transmission system |
| CN107703854A (en) * | 2017-10-26 | 2018-02-16 | 国网黑龙江省电力有限公司信息通信公司 | power load monitoring system and method |
| US10069324B2 (en) | 2014-09-08 | 2018-09-04 | Empire Technology Development Llc | Systems and methods for coupling power to devices |
| US10320228B2 (en) | 2014-09-08 | 2019-06-11 | Empire Technology Development Llc | Power coupling device |
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| CN102082449A (en) * | 2009-11-30 | 2011-06-01 | 美国博通公司 | Battery and battery circuit module |
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Cited By (13)
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| CN103618608A (en) * | 2013-12-02 | 2014-03-05 | 西南交通大学 | Multi-load validity judgment method of wireless power supply system |
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| CN105226846B (en) * | 2014-06-13 | 2018-09-18 | 英派尔科技开发有限公司 | The resonance power transmission of frequency variation coding |
| CN104215239A (en) * | 2014-08-29 | 2014-12-17 | 西北工业大学 | Vision-based autonomous unmanned plane landing guidance device and method |
| CN104215239B (en) * | 2014-08-29 | 2017-02-08 | 西北工业大学 | Guidance method using vision-based autonomous unmanned plane landing guidance device |
| US10418844B2 (en) | 2014-09-08 | 2019-09-17 | Empire Technology Development Llc | Systems and methods for coupling power to devices |
| US10320228B2 (en) | 2014-09-08 | 2019-06-11 | Empire Technology Development Llc | Power coupling device |
| US10069324B2 (en) | 2014-09-08 | 2018-09-04 | Empire Technology Development Llc | Systems and methods for coupling power to devices |
| CN105958667A (en) * | 2016-06-03 | 2016-09-21 | 东南大学 | Maximum efficiency point tracking method for bidirectional wireless electric energy transmission system |
| CN105958667B (en) * | 2016-06-03 | 2018-07-20 | 东南大学 | A kind of maximal efficiency point-tracking method of bidirectional radio energy Transmission system |
| CN107703854A (en) * | 2017-10-26 | 2018-02-16 | 国网黑龙江省电力有限公司信息通信公司 | power load monitoring system and method |
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Application publication date: 20130814 |