CN108173355A - A kind of electromagnetic field couples hybrid wireless electric energy Transmission system - Google Patents
A kind of electromagnetic field couples hybrid wireless electric energy Transmission system Download PDFInfo
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- CN108173355A CN108173355A CN201810104480.4A CN201810104480A CN108173355A CN 108173355 A CN108173355 A CN 108173355A CN 201810104480 A CN201810104480 A CN 201810104480A CN 108173355 A CN108173355 A CN 108173355A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 61
- 230000005672 electromagnetic field Effects 0.000 title claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 71
- 238000005859 coupling reaction Methods 0.000 claims abstract description 71
- 230000008878 coupling Effects 0.000 claims abstract description 70
- 239000003990 capacitor Substances 0.000 claims abstract description 11
- 230000005684 electric field Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H04B5/79—
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention discloses a kind of electromagnetic field couples hybrid wireless electric energy Transmission system, including high frequency power source and radiating circuit and the receiving circuit being connected and the load being connected；Radiating circuit includes the coupling electrode plate being connect with primary circuit and the transmitting coil and primary compensation capacitor that are connected in series with the coupling electrode plate, and transmitting coil includes the primary side inductance being connected in series with and radiating circuit internal resistance；Receiving circuit includes the coupling electrode plate being connect with secondary circuit and the receiving coil and secondary compensating electric capacity that are connected in series with the coupling electrode plate, and receiving coil includes the secondary inductance being connected in series with and receiving circuit internal resistance；It is powered to the load simultaneously by the magnetic coupling two ways between the field coupling between coupling electrode plate and transmitting, receiving coil between radiating circuit and receiving circuit, realizes wireless power transmission.The present invention can increase the transmission range of coupled system, realize wireless power transmission that is high-power, remote, stablizing.
Description
Technical field
The present invention relates to the technical fields of wireless power transmission, refer in particular to a kind of electromagnetic field couples hybrid wireless electric energy and pass
Defeated system.
Background technology
For traditional wired power transmission mode due to needing a large amount of plain conductor and lengthy and tedious stringing engineering, having reduces electricity consumption
Device flexibility is influenced the shortcomings that big etc. apparent by working environment.In order to which the limitation for solving traditional electric energy transmission mode is asked
Topic, wireless power transmission technology are suggested many years ago.This mode takes electric convenient, saving metals resources and without numerous and diverse
Stringing engineering, the defects of compensating for traditional wire power transmission mode.
Wireless power transmission technology mainly includes magnetic field coupling-type, field coupling formula and microwave type etc..Although microwave type passes
Defeated distance can reach out to distances, but extremely inefficient, power it is small and dissipate it is serious, at present using less.In practical application, magnetic
Field manifold type and field coupling formula are studied more in recent years since transimission power is larger, efficiency is higher.But both modes
Transmission performance is seriously limited by transmission range.As distance increases, efficiency of transmission will substantially reduce, and be unfavorable for the reality of system
It applies on border.At present, mostly in a centimetre grade, the transmission range of magnetic field coupling-type exists the transmission range of field coupling formula wireless power transmission more
Tens centimetres of grade.How effectively improving the distance of wireless power transmission and keeping the high efficiency of system is the current face of the technology
The important problem faced.
Invention content
It is an object of the invention to overcome the deficiencies in the prior art, it is proposed that a kind of electromagnetic field couples hybrid wireless electric energy passes
Defeated system, simultaneously using field coupling and magnetic coupling in same system, the coupling effect that two ways can be caused to generate
It should be overlapped mutually, substantially increase the transimission power of traditional single field coupling and single magnetic coupling wireless power transmission systems, and increase
The transmission range of coupled system realizes wireless power transmission that is high-power, remote, stablizing.
To achieve the above object, technical solution provided by the present invention is：A kind of electromagnetic field couples hybrid wireless electric energy passes
Defeated system, including high frequency power source and radiating circuit and the receiving circuit being connected and the load being connected；The transmitting electricity
Road includes the coupling electrode plate being connect with primary circuit and the transmitting coil and primary side that are connected in series with the coupling electrode plate compensate
Capacitance, the transmitting coil includes the primary side inductance being connected in series with and radiating circuit internal resistance, the radiating circuit internal resistance refer to remove
The sum of all internal resistances of primary circuit that secondary is reflected into outside the resistance of primary side, the primary side inductance, primary compensation capacitor and transmitting
Circuit internal resistance, which is connected in series with, forms RLC series resonant circuits；The receiving circuit includes the coupling electrode being connect with secondary circuit
Plate and the receiving coil being connected in series with the coupling electrode plate and secondary compensating electric capacity, the receiving coil include what is be connected in series with
Secondary inductance and receiving circuit internal resistance, the receiving circuit internal resistance refer to the sum of internal resistance of all elements of receiving circuit, the pair
Side inductance, secondary compensating electric capacity and receiving circuit internal resistance, which are connected in series with, forms RLC series resonant circuits；It the transmitting coil and connects
On the contrary, transmitting electric energy by magnetic coupling between them, i.e., described transmitting coil is transmitted take-up circle Same Name of Ends by magnetic coupling
Energy can generate displacement to receiving coil between the coupling electrode plate of the radiating circuit and the coupling electrode plate of receiving circuit
Electric current, i.e., the coupling electrode plate of described radiating circuit transmit energy to the coupling electrode plate of receiving circuit by field coupling, this
The energy that sample electric field and magnetic field are transmitted being capable of powering load simultaneously.
Compared with prior art, the present invention having the following advantages that and advantageous effect：
1 at the same using two kinds of transmission modes of field coupling and magnetic coupling for load carry out wireless power so that system
The more traditional field coupling of efficiency of transmission and magnetic coupling wireless power transmission systems are improved, and transmission range is increased, and are realized
At a distance, wireless power transmission that is high-power, stablizing.
2nd, system structure is simple, without changing the structure of conventional wireless transmission system, being easy to construction and realizing.
Description of the drawings
Fig. 1 is the circuit diagram of electromagnetic field couples hybrid wireless electric energy Transmission system provided in embodiment.
Fig. 2 is the equivalent circuit schematic of electromagnetic field couples hybrid wireless electric energy Transmission system provided in embodiment.
Fig. 3 is the voltage loaded in embodiment and the oscillogram of electric current.
Fig. 4 is traditional field coupling, magnetic coupling radio energy transmission system and the electromagnetic field couples in embodiment
The efficiency of transmission of hybrid wireless electric energy Transmission system and the relationship comparison diagram of transmission range.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Electromagnetic field couples hybrid wireless electric energy Transmission system provided by the present invention, basic principle are to utilize electric field simultaneously
Coupling and two kinds of transmission modes of magnetic coupling carry out wireless power for load so that the more traditional single electric field of system, magnetic coupling
Radio electric energy transmission system efficiency of transmission improves, and transmission range increases, and realizes radio energy over long distances, high-power, stable
Transmission, is suitably applied practical matter.
As shown in Figure 1, the electromagnetic field couples hybrid wireless electric energy Transmission system, includes the high frequency power source being connected
With radiating circuit and the receiving circuit being connected and load；The radiating circuit includes the coupling electrode being connect with primary circuit
Plate and the transmitting coil being connected in series with the coupling electrode plate and primary compensation capacitor C1, the transmitting coil is including being connected in series with
Primary inductor L1With radiating circuit internal resistance R1, the radiating circuit internal resistance R1Refer in addition to secondary is reflected into the resistance of primary side
The sum of all internal resistances of primary circuit, the primary inductor L1, primary compensation capacitor C1With radiating circuit internal resistance R1It is connected in series with composition
RLC series resonant circuits；The receiving circuit include the coupling electrode plate that is connect with secondary circuit and with the coupling electrode plate string
Join the receiving coil of connection and secondary compensating electric capacity C2, the receiving coil includes the secondary inductance L that is connected in series with2It is electric with receiving
Road internal resistance R2, the receiving circuit internal resistance R2Refer to the sum of internal resistance of all elements of receiving circuit, the secondary inductance L2, secondary
Compensating electric capacity C2With receiving circuit internal resistance R2It is connected in series with and forms RLC series resonant circuits；The transmitting coil and receiving coil are same
On the contrary, transmitting electric energy by magnetic coupling between them, i.e., described transmitting coil transmits energy to connecing by magnetic coupling at name end
Take-up circle can generate displacement current, table between the coupling electrode plate of the radiating circuit and the coupling electrode plate of receiving circuit
It is shown as coupled capacitor Cs1、Cs2, i.e., the coupling electrode plate of described radiating circuit transmits energy by field coupling and arrives receiving circuit
Coupling electrode plate, the energy that such electric field and magnetic field are transmitted being capable of powering loads simultaneously.
Fig. 2 is the equivalent circuit diagram of above system of the present invention.Wherein primary inductor L1With secondary inductance L2Same Name of Ends is opposite；
Coupled capacitor Cs1With Cs2It is expressed as series equivalent coupled capacitor Cs, expression formula is as follows：
The coupling mode equations of system are：
In formula, usFor high frequency power source forcing item, ω0For radiating circuit, the natural angular frequency of receiving circuit,γ1And γ2Be divided into not Fa She, the proportion of goods damageds of receiving circuit, and γLFor load factor；For the coupling between transmitting, receiving circuit
Collaboration number；For the capacitive coupling coefficient between transmitting, receiving circuit；To emit, receiving electricity
Inductive coupling coefficient between road.
Herein using flat coupling mechanism, then coupled capacitor size and the relationship of transmission range d are：
Wherein S be coupling electrode plate effective area, ε0For permittivity of vacuum, εrFor relative dielectric constant.
The relationship of transmitting, the mutual inductance size between receiving coil and transmission range is：
Wherein N1、N2Respectively emit, the coil turn of receiving coil, r1、r2Respectively emit, the coil of receiving coil
Radius, μ are magnetic conductivity.
System equation (2) is solved, obtains system efficiency of transmission expression formula during resonance：
If high frequency power source forcingThe intrinsic frequency of transmitting coil and receiving coil
For f0=1MHz, radiating circuit inductance L1With receiving circuit inductance L2It is 0.25mH, primary compensation capacitor C1Electricity is compensated with secondary
Hold C2It is 100pF, radiating circuit internal resistance R1With receiving circuit internal resistance R2It is 10 Ω, load resistance RL=100 Ω emit, connect
Receive turn number N1=N2=5, coil radius r1=r2=0.4m, coupling electrode plate effective area S=0.64m2。
With field coupling coefficient kC=0.0236, magnetic coupling coefficient kL=0.0156, coefficient of coup k=0.0392, transmission
For distance d=1.2m, Fig. 3 is the voltage current waveform of load, it can be seen that load can obtain stable electric energy.
Can be obtained by formula (5) it is shown in solid in the efficiency of transmission of system and the relation curve of transmission range such as Fig. 4, respectively this
Invention (enables k when carrying system effectiveness curve, singly having field couplingL=0) system effectiveness curve and while singly having magnetic coupling, (enable kC
=0) system effectiveness curve.Solid dot is the variant transmission range pair that three kinds of systems are obtained by circuit simulation under PSIM environment
Answer the efficiency of transmission of system, it can be seen that theory analysis is consistent with simulation result.By curve comparison in figure it is found that the present invention
Carried system using two kinds of coupled modes due to transmitting electric energy simultaneously, and the efficiency of transmission of hybrid system is compared to two kinds of traditional lists
Coupled system is significantly improved, and transmission range farther out when advantage become apparent, compensate for legacy system to a certain extent
The defects of transmission performance is influenced by transmission range.
As the above analysis, electromagnetic field couples hybrid wireless electric energy Transmission system of the invention is wireless by field coupling
Electric energy transmits and magnetic coupling wireless power transmission two methods simultaneous transmission energy so that the coupling that two kinds of coupled modes generate
Mechanism is overlapped mutually, and increases traditional field coupling and the transmission range of magnetic coupling wireless power transmission, improves efficiency of transmission, energy
It enough realizes remote, high-power stable transmission, there is actual promotional value, be worthy to be popularized.
Embodiment described above is only the preferred embodiments of the invention, and but not intended to limit the scope of the present invention, therefore
The variation that all shape, principles according to the present invention are made should all be covered within the scope of the present invention.
Claims (1)
1. a kind of electromagnetic field couples hybrid wireless electric energy Transmission system, it is characterised in that：Including the high frequency power source that is connected and
Radiating circuit and the receiving circuit being connected and load；The radiating circuit includes the coupling electrode plate being connect with primary circuit
And the transmitting coil and primary compensation capacitor being connected in series with the coupling electrode plate, the transmitting coil include the original being connected in series with
Side inductance and radiating circuit internal resistance, the radiating circuit internal resistance refer to the primary circuit institute in addition to secondary is reflected into the resistance of primary side
There is the sum of internal resistance, the primary side inductance, primary compensation capacitor and radiating circuit internal resistance, which are connected in series with, forms RLC series resonances electricity
Road；The receiving circuit includes the coupling electrode plate being connect with secondary circuit and the reception line being connected in series with the coupling electrode plate
Circle and secondary compensating electric capacity, the receiving coil includes the secondary inductance being connected in series with and receiving circuit internal resistance, described to receive electricity
Road internal resistance refers to the sum of internal resistance of all elements of receiving circuit, the secondary inductance, secondary compensating electric capacity and receiving circuit internal resistance
It is connected in series with and forms RLC series resonant circuits；The transmitting coil and receiving coil Same Name of Ends are on the contrary, pass through magnetic field between them
Coupled transfer electric energy, i.e., described transmitting coil transmit energy to receiving coil, the coupling of the radiating circuit by magnetic coupling
Displacement current can be generated between electrode plate and the coupling electrode plate of receiving circuit, i.e., the coupling electrode plate of described radiating circuit leads to
It crosses field coupling and transmits the coupling electrode plate that energy arrives receiving circuit, the energy that such electric field and magnetic field are transmitted can be simultaneously to bearing
Carry power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810104480.4A CN108173355A (en) | 2018-02-02 | 2018-02-02 | A kind of electromagnetic field couples hybrid wireless electric energy Transmission system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810104480.4A CN108173355A (en) | 2018-02-02 | 2018-02-02 | A kind of electromagnetic field couples hybrid wireless electric energy Transmission system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274183A (en) * | 2018-11-09 | 2019-01-25 | 西南交通大学 | A kind of radio energy transmission system with highly resistance offset characteristic |
| US11824311B2 (en) | 2017-08-03 | 2023-11-21 | Amphenol Corporation | Connector for low loss interconnection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11824311B2 (en) | 2017-08-03 | 2023-11-21 | Amphenol Corporation | Connector for low loss interconnection system |
| CN109274183A (en) * | 2018-11-09 | 2019-01-25 | 西南交通大学 | A kind of radio energy transmission system with highly resistance offset characteristic |
| CN109274183B (en) * | 2018-11-09 | 2022-03-04 | 西南交通大学 | Wireless power transmission system with high anti-offset characteristic |
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Application publication date: 20180615 |