CN106549509A - Magnet coupled resonant type wireless energy transmission equipment and method - Google Patents
Magnet coupled resonant type wireless energy transmission equipment and method Download PDFInfo
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- CN106549509A CN106549509A CN201710054143.4A CN201710054143A CN106549509A CN 106549509 A CN106549509 A CN 106549509A CN 201710054143 A CN201710054143 A CN 201710054143A CN 106549509 A CN106549509 A CN 106549509A
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Abstract
The present invention discloses a kind of magnet coupled resonant type wireless energy transmission equipment and method, including discharger and reception device.Discharger includes high frequency electric source, impedance matching network, detecting system and transmitting coil.Reception device includes receiving coil, current rectifying and wave filtering circuit, cascaded transformation circuit, control system and load.The present invention adds real-time detection and self-checking device in wireless energy transfer system.When transmission range and load change, the transmission performance of system is carried out real-time detection and according to people be required to realize free automatic control and adjustment, it is ensured that system can realize high-power, efficient transmission.This has vital meaning to the advantage for giving full play to the technology medium and long distance, the practicality for strengthening the technology.
Description
Technical field
The present invention relates to wireless energy transmission technology field, and in particular to magnet coupled resonant type wireless energy transmission equipment and
Method.
Background technology
The transmission of electric energy at this stage is mainly carried out using wired in the way of (i.e. by the use of cable as electric energy transmission medium), therefore
Easily there is loss in electric energy transmitting procedure, reduce efficiency of transmission；The generation of the phenomenons such as the aging and point discharge of circuit also can
Affect life-span and the safety of electrical equipment；Simultaneously under the adverse circumstances such as sleet, human body implantation type medical apparatus and instruments and under water, mine
Deng charging under operating condition, difficult in maintenance, motility it is poor.Many drawbacks that above traditional wire charges all can be by wireless
Energy transmission technology is effectively resolved.Wireless energy transfer be also called non-contact type electric energy transmission, refer to by electric energy from
Mains side is delivered to load-side and connects without any wire.Due to eliminating wire, thus with higher motility, more
High safety and stability, more conforms to Future Social Development trend.
It is induction in three kinds of common wireless energy transmission technologies, in magnet coupled resonant type and microwave radiation formula, magnetic
Coupled resonance formula is compared to induction long transmission distance；Compared to microwave radiation formula, efficiency of transmission is higher, in can realizing
High-power, efficient transmission at a distance, in portable set, human body implantation type medical science, smart home and electric automobile etc.
Numerous areas show great application potential, therefore are more exposed to the favor of people.But magnet coupled resonant type wireless energy
Amount transmission technology there is also two crucial problems of comparison：1. output and efficiency of transmission tend not to take into account；2. for away from
From more sensitive with the change of load.When distance or load change, the load of system is caused to deviate output optimal
Load or efficiency of transmission optimum load, can largely reduce the output and efficiency of transmission of system.Therefore, in wireless energy
Real-time detection and self-checking device, when transmission range and load change, the transmission to system are added in Transmission system
Performance carry out real-time detection and according to people be required to realize free automatic control and adjustment, it is ensured that system can realize big work(
Rate, efficient transmission.This has heavy to closing to the advantage for giving full play to the technology medium and long distance, the practicality for strengthening the technology
The meaning wanted.
The content of the invention
The technical problem to be solved is that existing magnet coupled resonant type wireless energy transmission cannot be while take into account defeated
Go out power and efficiency of transmission, and for sensitive issue is compared in the change of distance and load, there is provided a kind of magnet coupled resonant type without
Heat input transmitting device and method.
To solve the above problems, the present invention is achieved by the following technical solutions：
Magnet coupled resonant type wireless energy transmission equipment, including discharger and reception device.Above-mentioned discharger includes
High frequency electric source, impedance matching network, detecting system and transmitting coil；Detecting system includes the first detector unit, transmitting microcontroller
Device and wireless transmitter module；The outfan Jing impedance matching networks of high frequency electric source are connected with the input of transmitting coil；First inspection
The input for surveying unit is connected with the outfan of high frequency electric source, the outfan connection transmitting microcontroller of the first detector unit, is sent out
The outfan for penetrating microcontroller connects the input of wireless transmitter module.Above-mentioned reception device includes receiving coil, rectifying and wave-filtering
Circuit, cascaded transformation circuit, control system and load；Cascaded transformation circuit includes Boost translation circuits and Buck translation circuits；
Control system includes the second detector unit, the 3rd detector unit, receives microcontroller and wireless receiving module；Receiving coil it is defeated
Go out the input for holding rectified filter circuit to connect Boost translation circuits, outfan and the Buck conversion electricity of Boost translation circuits
The input on road is connected, the outfan connection load of Buck translation circuits；The input of wireless receiving module and wireless transmit mould
The outfan of block wirelessly connects, and the outfan of wireless receiving module is connected with the input for receiving microcontroller；Second detection is single
The input of unit is connected with the outfan of current rectifying and wave filtering circuit, and the input of the 3rd detector unit is defeated with Boost translation circuits
Go out end to be connected, the outfan of the second detector unit and the 3rd detector unit connects the input for receiving microcontroller simultaneously；Receive
The outfan connection Boost translation circuits and the control end of Buck translation circuits of microcontroller.
Especially, the first detector unit includes first voltage detector unit and the first current detecting unit.First voltage is examined
Survey unit to be made up of first voltage sensor, first voltage signal conditioning circuit and first voltage A/D change-over circuit；First voltage
Sensor is arranged on the outfan of high frequency electric source, and the input of first voltage signal conditioning circuit is defeated with first voltage sensor
Go out end to be connected, the outfan of first voltage signal conditioning circuit is connected with the input of first voltage A/D change-over circuit, and first is electric
The outfan of pressure A/D change-over circuits is connected with transmitting microcontroller.First current detecting unit by the first current sensor, first
Current signal conditioning circuit and the first electric current A/D change-over circuits composition；First current sensor is arranged on the output of high frequency electric source
End, the input of the first current signal conditioning circuit are connected with the outfan of the first current sensor, the conditioning of the first current signal
The outfan of circuit is connected with the input of the first electric current A/D change-over circuits, the outfan of the first electric current A/D change-over circuits with send out
Penetrate microcontroller to be connected.
Especially, the second detector unit includes second voltage detector unit and the second current detecting unit.Second voltage is examined
Survey unit to be made up of second voltage sensor, second voltage signal conditioning circuit and second voltage A/D change-over circuit；Second voltage
Sensor is arranged on the outfan of current rectifying and wave filtering circuit, input and the second voltage sensor of second voltage signal conditioning circuit
Outfan be connected, the outfan of second voltage signal conditioning circuit is connected with the input of second voltage A/D change-over circuit, the
The outfan of two voltage A/D change-over circuits is connected with microcontroller is received.Second current detecting unit by the second current sensor,
Second current signal conditioning circuit and the second electric current A/D change-over circuits composition；Second current sensor is arranged on rectifying and wave-filtering electricity
The outfan on road, the input of the second current signal conditioning circuit are connected with the outfan of the second current sensor, the second electric current
The outfan of signal conditioning circuit is connected with the input of the second electric current A/D change-over circuits, the second electric current A/D change-over circuits it is defeated
Go out end and be connected with microcontroller is received.
Especially, the 3rd detector unit is tertiary voltage detector unit.Tertiary voltage detector unit is sensed by tertiary voltage
Device, tertiary voltage signal conditioning circuit and tertiary voltage A/D change-over circuits composition；Tertiary voltage sensor is arranged on Boost changes
The outfan of circuit is changed, the input of tertiary voltage signal conditioning circuit is connected with the outfan of tertiary voltage sensor, the 3rd
The outfan of voltage signal conditioning circuit is connected with the input of tertiary voltage A/D change-over circuits, tertiary voltage A/D change-over circuits
Outfan with receive microcontroller be connected.
Especially, it is single-chip microcomputer to launch microcontroller, is received as controller for digital signal processor.
Especially, transmitting coil is identical with the structure of receiving coil, and the center of the two is fixed in the same horizontal line.
Magnet coupled resonant type wireless energy transmission method, comprises the steps：
High frequency electric source exports high-frequency ac electric energy；High-frequency ac electric energy through impedance matching network formed conjugate impedance match and
The output of high frequency electric source is maximized, then electric energy is input into transmitting coil；Transmitting coil produces resonance, produces around which
The electromagnetic field of raw alternation；
There is resonance in receiving coil, produce the electromagnetic field of simultaneous resonance, form energy acceptance passage, obtain coupled resonance energy
Amount, and then produce the alternating current with frequency；The energy conversion that receiving coil is received by current rectifying and wave filtering circuit is into galvanic current；
Cascaded transformation circuit is adjusted and is processed to the unidirectional current, obtains voltage or electric current suitable for load supplying, is supplied to load
Electricity, realizes being wirelessly transferred for electric energy；
When the system is operated, the first detector unit acquisition system input information of detecting system, the i.e. output of high frequency electric source
Voltage and output current, and transmitting microcontroller is sent into after signal condition and A/D conversions, transmitting microcontroller is through wireless
System input information is sent by transmitter module；The system that the wireless receiving module reception wireless transmitter module of control system sends is defeated
Enter information, and be passed to receive in microcontroller；At the same time, the second detector unit acquisition system output letter of control system
Breath, the i.e. output voltage and output current of current rectifying and wave filtering circuit, and reception microcontroller is sent into after signal condition and A/D conversions
Device；3rd detector unit gathers the running voltage of cascaded transformation circuit, the i.e. output voltage of Boost translation circuits, and by letter
Number conditioning and A/D conversion after send into receive microcontroller；
When system load or distance change when, the microcontroller that receives of control system is exported with certain disturbance
Pwm signal adjust cascade translation circuit Boost translation circuits dutycycle and the dutycycle of Buck translation circuits, by with tune
Before section, effect power of system is compared, and determines the correctness of perturbation direction；If perturbation direction is correct, according to original
Continue disturbance output signal and be adjusted in direction；If perturbation direction mistake, disturbance adjusting is carried out according to opposite direction, until in front and back
The variable quantity of effect power of regulating guarantee system twice is controlled in allowed band, and now system is just operated in takes advantage of effect
Under the conditions of side reaches the desired load of maximum, the tracking of optimal load is realized.
Compared with prior art, the present invention has following features：
1st, detector unit, detection system are arranged in transmitting terminal using the evaluation index based on effect power in the controls
The input power of system；Receiving terminal arrange detector unit, the output (ignoring the energy loss of cascade circuit) of detecting system,
Simultaneously consider the output and efficiency of system, being capable of free transformation system output and efficiency of transmission, it is ensured that system has
Good combination property, only can guarantee that power and the single optimum defect of efficiency in compensate for Traditional control；
2nd, using the Boost translation circuits and Buck translation circuits of cascade, Conventional impedance matching network or body had both been avoided
The not high problem of the larger or matching precision of product, is easy to microcontroller separate regulation to control again, improves the controllability and energy of system
The stability of amount transmission；
3rd, the wireless power transmission of moderate distance is realized based on electromagnetic coupled harmonic technology, with efficient, non-radiative energy
The advantage of transmission；
4th, distance or load are solved when changing, system can not require freely convert the defeated of control system according to people
Go out power and efficiency of transmission, and the problem that output and efficiency of transmission can not be taken into account.
Description of the drawings
Fig. 1 is that the MCR-WPT system equivalent-circuit models for mending structure are opened up based on string serial type.
Fig. 2 is the structured flowchart of the present invention.
Fig. 3 is detector unit structural representation figure of the present invention.
Fig. 4 opens up benefit circuit theory diagrams for receiving terminal cascaded transformation of the present invention.
Specific embodiment
The invention will be further described with reference to embodiments, but the invention is not limited in these embodiments.
The MCR-WPT devices that optimal load based on effect power is tracked, the control theory of employing is effect power.With reference to
Fig. 1 is introduced as follows to the theory：
The MCR-WPT system equivalent-circuit models that benefit structure is opened up using string serial type are as shown in Figure 1.In figure, L1, L2, C1, C2,
R1, R2The respectively equivalent inductance of transmitting coil and receiving coil, equivalent capacity and equivalent resistance.I1, I2Respectively transmitting coil
With the electric current in receiving coil, M is the mutual inductance between two coils, and D is the distance between two coils, RLFor equivalent load, USFor high-frequency electrical
Source.The calculating formula that the output and efficiency of transmission of system can be obtained by Fig. 1 is formula (1) and formula (2)：
Understand to be respectively present peak power output load R by formula (1) and formula (2)LPR is loaded with optimum transport efficiencyLηMake be
The output and efficiency of transmission of system respectively reaches maximum, but RLP＞ RLη, i.e., there is no best effort and load while making system
Output and efficiency reach maximum.Therefore, in load interval [RLη, RLP] in, the transmission performance of system is from maximum transmitted efficiency
To peak power output transition, when load is closer to RLηWhen, the efficiency of transmission of system is bigger；When load is closer to RLPWhen, system
Output it is bigger.In order to taking into account the output and efficiency of transmission of system and realizing freely converting for the two, this
The bright evaluation index proposed using new effect power, specifically such as formula (3)：
In formula, n, m are respectively the secondary number formulary of P and η, for representing the weight of the two in primary system evaluation procedure.If n
Much larger than m or m=0, then it represents that in this subsystem evaluation procedure, only focus on the output of system；If m is much larger than n or n=
0, then it represents that in this evaluation procedure, only focus on the efficiency of transmission of system；If m=n, then it represents that in this evaluation procedure,
While the output and efficiency of transmission of attention location system, the importance of the two is in same position；If m is slightly larger than slightly larger than n or n
M, then it represents that the slightly efficiency of transmission or output of deflection system during evaluation system.The partial derivative with regard to loading is sought to formula (3)
Formula (4) can be obtained.In formula, Zm=ω × M, and m, n are not less than 1.
Understand that there is the load of optimal efficacy power makes formula (3) reach maximum by formula (4), specifically as shown in formula (5)：
Effect power is made to obtain maximum optimal load RLΦR is loaded in peak power outputLPLoad with optimum transport efficiency
RLηInterval within, i.e.,：RLΦ∈[RLη,RLP].Therefore can be adjusted by the value for reasonably arranging m and n according to formula (5)
Effect power is made to obtain maximum optimal load RLΦ, and the live load of system is transformed to by certain converting means
When making effect power obtain maximum load value, i.e., dynamic tracking makes effect power obtain maximum load, just can be according to people
Wish freely control system output and efficiency of transmission, and can guarantee that high-power, the efficient transmission of system.
In order to R will be loadedLTransform to effect power and obtain maximum optimal load RLΦ, can be by the way of DC-DC conversion.
In order to realize loading the impedance conversion in ascending any range, Boost translation circuits and Buck can be adopted to convert
The form of circuits cascading.Thus R can be obtainedLAnd RLΦBetween relation such as formula (6) shown in.In formula, D1For the duty of Boost translation circuits
Than D2For the dutycycle of Buck translation circuits.
A kind of magnet coupled resonant type wireless energy transmission equipment based on maximum effect power load tracking, as shown in Fig. 2
Including discharger and reception device.
Discharger includes high frequency electric source, impedance matching network, detecting system and transmitting coil.The outfan of high frequency electric source
Jing impedance matching networks are connected with the input of transmitting coil.Detecting system include the first detector unit, transmitting microcontroller and
Wireless transmitter module.The input of the first detector unit is connected with the outfan of high frequency electric source, the outfan of the first detector unit
Connection transmitting microcontroller, the outfan for launching microcontroller connect the input of wireless transmitter module.
Reception device includes receiving coil, current rectifying and wave filtering circuit, cascaded transformation circuit, control system and load.Cascade becomes
Changing circuit includes Boost translation circuits and Buck translation circuits.The rectified filter circuit of outfan of receiving coil connects Boost
The input of translation circuit；The outfan of Boost translation circuits is connected with the input of Buck translation circuits；Buck translation circuits
Outfan connection load.Control system includes the second detector unit, voltage detection unit, receives microcontroller and wireless receiving
Module.The input of wireless receiving module is wirelessly connected with the outfan of wireless transmitter module, the outfan of wireless receiving module
It is connected with the input of microcontroller.The input of the second detector unit is connected with the outfan of current rectifying and wave filtering circuit, voltage inspection
The input for surveying unit is connected with the outfan of Boost translation circuits, the outfan of the second detector unit and voltage detection unit
Connect the input for receiving microcontroller simultaneously.Receive outfan connection Boost translation circuits and the Buck conversion of microcontroller
The control end of circuit.
First detector unit is identical with the structure of the second detector unit, including voltage detection unit and current detecting list
Unit, as shown in Figure 3.Voltage detection unit is made up of voltage sensor, voltage signal conditioning circuit and voltage A/D change-over circuits.
The input of wherein voltage signal conditioning circuit is connected with voltage sensor, outfan and the voltage A/ of voltage signal conditioning circuit
The input of D change-over circuits is connected, and the outfan of voltage A/D change-over circuits is connected with corresponding microcontroller.Current detecting list
Unit is made up of current sensor, current signal conditioning circuit and electric current A/D change-over circuits.Wherein current signal conditioning circuit is defeated
Enter end to be connected with current sensor, the outfan of current signal conditioning circuit is connected with the input of electric current A/D change-over circuits, electricity
The outfan of stream A/D change-over circuits is connected with corresponding microcontroller.
3rd detector unit is also made up of voltage sensor, voltage signal conditioning circuit and voltage A/D change-over circuits.Wherein
The input of voltage signal conditioning circuit is connected with voltage sensor, and outfan and the voltage A/D of voltage signal conditioning circuit turn
The input for changing circuit is connected, and the outfan of voltage A/D change-over circuits is connected with microcontroller is received.
In the present invention, the transmitting microcontroller of detecting system is single-chip microcomputer, and the reception microcontroller of control system is number
Word signal processor (Digital Signal Processor, DSP).The evaluation index that reception microcontroller is adopted is taken advantage of for effect
Side, number of times m, the n in effect power can be freely arranged according to the requirement of people.Transmitting coil is identical with the structure of receiving coil,
Formed by copper wire winding.The center of transmitting coil and receiving coil in the same horizontal line, to improve electric energy efficiency of transmission.It is negative
Load can be pure resistor load or load such as battery or super capacitor for being affected to cause impedance change by external condition etc..
The present invention adds real-time detection and self-checking device in wireless energy transfer system.When transmission range and load
When changing, real-time detection is carried out to the transmission performance of system and tune is freely automatically controlled according to the realization that is required to of people
Section, it is ensured that system can realize high-power, efficient transmission.This is to giving full play to the advantage of the technology medium and long distance, strengthening
The practicality of the technology has vital meaning.
The operation principle of the present invention is as follows：
The high frequency electric source output high-frequency ac electric energy of discharger, forms conjugate impedance match through impedance matching network, maximum
Change the output of high frequency electric source, then electric energy is input into transmitting coil.Transmitting coil produces resonance, and friendship is produced around which
The electromagnetic field of change.Receiving coil is essentially identical with the structural parameters of transmitting coil, and resonance also occurs, the electromagnetism of simultaneous resonance is produced
, energy acceptance passage is formed, coupled resonance energy is obtained, and the alternating current with frequency is produced in transmitting coil.Receiving coil connects
The rectified filter circuit of energy of receipts is transformed into galvanic current, and Jing after the regulation and process of control system, is suitable for
In the voltage or electric current of load supplying, powering load, being wirelessly transferred for electric energy is realized.
When the system is operated, collected by voltage sensor, current sensor by the detector unit of detecting system respectively
The input voltage of system, input current signal；Voltage sensor, current sensor are passed through respectively by the detector unit of control system
Collect the input voltage V of cascaded transformation circuitinWith input current signal IinOutput voltage, output current letter as system
Number, after above-mentioned signal is respectively through the circuit such as signal condition and A/D conversions, it is delivered in corresponding microcontroller.Detection means
Microcontroller system input information is passed to the microcontroller of control system through wireless transmitter module and wireless receiving module
Device.The microcontroller of control system obtains the biography of system through information processing according to the number of times of effect power for pre-setting
Defeated efficiency and effect power.
When system load or distance change when, the microcontroller of control system is with certain disturbance output PWM letters
Number adjust cascade translation circuit dutycycle D1And D2, by being compared with effect power for adjusting front system, it is determined that disturbance side
To correctness.If perturbation direction is correct, continues disturbance output signal according to original direction and be adjusted；If disturbance side
To mistake, then disturbance adjusting is carried out according to opposite direction, until the variable quantity of effect power of regulating guarantee system in front and back twice
Control under the conditions of now system is just operated in the desired load for making effect power reach maximum, is realized optimum in allowed band
The tracking of load.Before system work, buffering electric capacity C is first set2Buffer voltagc V at two endsbfFor k times of (k of loaded work piece voltage
Slightly larger than 1, it is ensured that the safety of loaded work piece), Boost translation circuits are adjusted by the microprocessor output pwm signal of control system
Dutycycle, it is ensured that VbfMore than Vin；In the input of Buck translation circuits, voltage detection unit, real-time detection V are setbfEnsure
Buffer voltagc V when load or distance changebfTotal rated operational voltage V more than load two endsout, it is ensured that Buck is converted
The effectiveness of circuit work, improves the stability of system output, and the concrete operating principle of system is as shown in Figure 4.Control by more than
System is adjusted, you can realize that system can the high-power and efficient transmission of energy when load or distance change.The load of the system can
To be pure resistor load or be affected the load for causing impedance change such as battery or super capacitor etc. by external condition.
By adopting, the control strategy with effect power as evaluation index combines Boost translation circuits to the present invention and Buck becomes
Change the modulate circuit of circuits cascading form, it is ensured that when distance or load change, be capable of the transporting of real-time monitoring system
Can, the live load of system is adjusted such that into that effect power reaches the desired load of maximum, can be according to the wish freedom of people
The output and efficiency of transmission of transformation system, and both can guarantee that system had higher output, can guarantee that system has again
There is larger efficiency of transmission, overcome Traditional control strategy and can only ensure output and the single optimum defect of efficiency of transmission.
With simple structure, it is easy to accomplish, the features such as overall system performance is superior.
Claims (7)
1. magnet coupled resonant type wireless energy transmission equipment, including discharger and reception device, it is characterised in that：
Above-mentioned discharger includes high frequency electric source, impedance matching network, detecting system and transmitting coil；Detecting system includes first
Detector unit, transmitting microcontroller and wireless transmitter module；
The outfan Jing impedance matching networks of high frequency electric source are connected with the input of transmitting coil；The input of the first detector unit
It is connected with the outfan of high frequency electric source, the outfan connection transmitting microcontroller of the first detector unit launches the defeated of microcontroller
Go out the input of end connection wireless transmitter module；
Above-mentioned reception device includes receiving coil, current rectifying and wave filtering circuit, cascaded transformation circuit, control system and load；Cascade becomes
Changing circuit includes Boost translation circuits and Buck translation circuits；Control system include the second detector unit, the 3rd detector unit,
Receive microcontroller and wireless receiving module；
The rectified filter circuit of the outfan of receiving coil connects the input of Boost translation circuits, Boost translation circuits it is defeated
Go out end to be connected with the input of Buck translation circuits, the outfan connection load of Buck translation circuits；Wireless receiving module it is defeated
Enter end to be wirelessly connected with the outfan of wireless transmitter module, the input of the outfan and reception microcontroller of wireless receiving module
It is connected；The input of the second detector unit is connected with the outfan of current rectifying and wave filtering circuit, the input of the 3rd detector unit with
The outfan of Boost translation circuits is connected, and the outfan of the second detector unit and the 3rd detector unit connects reception micro-control simultaneously
The input of device processed；Receive the outfan connection Boost translation circuits and the control end of Buck translation circuits of microcontroller.
2. magnet coupled resonant type wireless energy transmission equipment according to claim 1, is characterized in that, the first detector unit bag
Include first voltage detector unit and the first current detecting unit；
First voltage detector unit is by first voltage sensor, first voltage signal conditioning circuit and first voltage A/D conversion electricity
Road constitutes；First voltage sensor is arranged on the outfan of high frequency electric source, the input of first voltage signal conditioning circuit and
The outfan of one voltage sensor is connected, outfan and the first voltage A/D change-over circuit of first voltage signal conditioning circuit
Input is connected, and the outfan of first voltage A/D change-over circuit is connected with transmitting microcontroller；
First current detecting unit is by the first current sensor, the first current signal conditioning circuit and the first electric current A/D conversion electricity
Road constitutes；First current sensor is arranged on the outfan of high frequency electric source, the input of the first current signal conditioning circuit and
The outfan of one current sensor is connected, the outfan of the first current signal conditioning circuit and the first electric current A/D change-over circuits
Input is connected, and the outfan of the first electric current A/D change-over circuits is connected with transmitting microcontroller.
3. magnet coupled resonant type wireless energy transmission equipment according to claim 1, is characterized in that, the second detector unit bag
Include second voltage detector unit and the second current detecting unit；
Second voltage detector unit is by second voltage sensor, second voltage signal conditioning circuit and second voltage A/D conversion electricity
Road constitutes；Second voltage sensor is arranged on the outfan of current rectifying and wave filtering circuit, the input of second voltage signal conditioning circuit
It is connected with the outfan of second voltage sensor, outfan and the second voltage A/D conversion electricity of second voltage signal conditioning circuit
The input on road is connected, and the outfan of second voltage A/D change-over circuit is connected with microcontroller is received；
Second current detecting unit is by the second current sensor, the second current signal conditioning circuit and the second electric current A/D conversion electricity
Road constitutes；Second current sensor is arranged on the outfan of current rectifying and wave filtering circuit, the input of the second current signal conditioning circuit
It is connected with the outfan of the second current sensor, the outfan of the second current signal conditioning circuit and the second electric current A/D conversions are electric
The input on road is connected, and the outfan of the second electric current A/D change-over circuits is connected with microcontroller is received.
4. magnet coupled resonant type wireless energy transmission equipment according to claim 1, is characterized in that, the 3rd detector unit is
Tertiary voltage detector unit；
Tertiary voltage detector unit is by tertiary voltage sensor, tertiary voltage signal conditioning circuit and tertiary voltage A/D conversion electricity
Road constitutes；Tertiary voltage sensor is arranged on the outfan of Boost translation circuits, the input of tertiary voltage signal conditioning circuit
It is connected with the outfan of tertiary voltage sensor, outfan and the tertiary voltage A/D conversion electricity of tertiary voltage signal conditioning circuit
The input on road is connected, and the outfan of tertiary voltage A/D change-over circuits is connected with microcontroller is received.
5. magnet coupled resonant type wireless energy transmission equipment according to claim 1, is characterized in that, transmitting microcontroller is
Single-chip microcomputer, is received as controller for digital signal processor.
6. magnet coupled resonant type wireless energy transmission equipment according to claim 1, is characterized in that, transmitting coil with receive
The structure of coil is identical, and the center of the two is fixed in the same horizontal line.
7. magnet coupled resonant type wireless energy transmission method, is characterized in that, comprise the steps：
High frequency electric source exports high-frequency ac electric energy；High-frequency ac electric energy forms conjugate impedance match maximum through impedance matching network
Change the output of high frequency electric source, then electric energy is input into transmitting coil；Transmitting coil produces resonance, and friendship is produced around which
The electromagnetic field of change；
There is resonance in receiving coil, produce the electromagnetic field of simultaneous resonance, form energy acceptance passage, obtain coupled resonance energy,
And then generation is with the alternating current of frequency；The energy conversion that receiving coil is received by current rectifying and wave filtering circuit is into galvanic current；Level
Connection translation circuit is adjusted and is processed to the unidirectional current, obtains the voltage or electric current suitable for load supplying, powering load,
Realize being wirelessly transferred for electric energy；
When the system is operated, the first detector unit acquisition system input information of detecting system, the i.e. output voltage of high frequency electric source
And output current, and transmitting microcontroller is sent into after signal condition and A/D conversions, transmitting microcontroller is through wireless transmit
System input information is sent by module；The wireless receiving module of control system receives the system input letter that wireless transmitter module sends
Breath, and be passed to receive in microcontroller；At the same time, the second detector unit acquisition system output information of control system,
That is the output voltage and output current of current rectifying and wave filtering circuit, and the feeding reception microcontroller after signal condition and A/D conversions；
3rd detector unit gathers the running voltage of cascaded transformation circuit, the i.e. output voltage of Boost translation circuits, and is adjusted by signal
Send into after reason and A/D conversions and receive microcontroller；
When system load or distance change when, control system receives microcontroller with certain disturbance output PWM letters
Number adjust cascade translation circuit Boost translation circuits dutycycle and the dutycycle of Buck translation circuits, by with regulation before
Effect power of system is compared, and determines the correctness of perturbation direction；If perturbation direction is correct, according to original direction
Continue disturbance output signal to be adjusted；If perturbation direction mistake, disturbance adjusting is carried out according to opposite direction, until in front and back twice
Regulating guarantee system effect power variable quantity control in allowed band, now system is just operated in reaches effect power
To under the conditions of maximum desired load, the tracking of optimal load is realized.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111220927A (en) * | 2020-03-10 | 2020-06-02 | 中铁电气化局集团有限公司 | Wireless power supply transmission efficiency detection device, system and method |
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| CN112886815A (en) * | 2021-01-11 | 2021-06-01 | 西交利物浦大学 | Cascaded boost-buck converter for impedance matching of wireless power transmission system and control method thereof |
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| CN106972639A (en) * | 2017-05-18 | 2017-07-21 | 长沙开雅电子科技有限公司 | A kind of wireless electric energy transmission device |
| CN110556926A (en) * | 2018-05-30 | 2019-12-10 | 兴澄股份有限公司 | Multi-receiving wireless charging system and method thereof |
| CN112332546A (en) * | 2019-08-05 | 2021-02-05 | 广东美的白色家电技术创新中心有限公司 | Wireless power transmission equipment and load equipment |
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| CN111220927A (en) * | 2020-03-10 | 2020-06-02 | 中铁电气化局集团有限公司 | Wireless power supply transmission efficiency detection device, system and method |
| CN111404281A (en) * | 2020-04-30 | 2020-07-10 | 深圳赫兹创新技术有限公司 | Wireless charging efficiency optimization method and device |
| CN112072803A (en) * | 2020-09-10 | 2020-12-11 | 中国电力科学研究院有限公司 | Wireless power transmission system based on electromagnetic metamaterial, simulation system and simulation working method thereof |
| CN112886816A (en) * | 2021-01-11 | 2021-06-01 | 西交利物浦大学 | Step-down converter for impedance matching of wireless power transmission system and control method thereof |
| CN112886815A (en) * | 2021-01-11 | 2021-06-01 | 西交利物浦大学 | Cascaded boost-buck converter for impedance matching of wireless power transmission system and control method thereof |
| CN113300493A (en) * | 2021-05-31 | 2021-08-24 | 桂林电子科技大学 | Magnetic coupling resonant wireless power transmission system based on electromagnetic metamaterial |
| CN113300493B (en) * | 2021-05-31 | 2022-11-01 | 桂林电子科技大学 | Magnetic coupling resonant wireless power transmission system based on electromagnetic metamaterial |
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