CN107707032A - Parallel connection type radio energy transmission system in parallel based on negative resistance - Google Patents
Parallel connection type radio energy transmission system in parallel based on negative resistance Download PDFInfo
- Publication number
- CN107707032A CN107707032A CN201710934499.7A CN201710934499A CN107707032A CN 107707032 A CN107707032 A CN 107707032A CN 201710934499 A CN201710934499 A CN 201710934499A CN 107707032 A CN107707032 A CN 107707032A
- Authority
- CN
- China
- Prior art keywords
- negative resistance
- resistance
- parallel
- primary side
- circuit
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 44
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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
Abstract
The invention discloses a kind of parallel connection type radio energy transmission system in parallel based on negative resistance, including the negative resistance being connected and radiating circuit and the receiving circuit being connected and load；Radiating circuit includes the primary side electric capacity and primary side transmitting coil being connected in parallel, and primary side transmitting coil includes primary side inductance and the radiating circuit internal resistance being connected in series；Receiving circuit includes the secondary receiving coil and secondary electric capacity being connected in parallel, and secondary receiving coil includes secondary inductance and the receiving circuit internal resistance being connected in series.Negative resistance is connected by the present invention with radiating circuit, and the property of energy is produced using negative resistance, realizes the energy supply to circuit, so as to instead of the high-frequency inversion source in traditional parallel connection type radio energy transmission system in parallel, so that the structure of system is simpler, working frequency is higher, and efficiency of transmission is more stable.
Description
Technical field
The present invention relates to the field of wireless power transmission or wireless power transmission technology, refer in particular to it is a kind of based on negative resistance and
Connection-parallel connection type radio energy transmission system.
Background technology
Wireless power transmission technology can be realized to be electrically isolated completely between power supply and electrical equipment, have safety, can
The advantages of leaning on, be flexible.Early in 19 end of the centurys, Ni Gula teslas (Nikola Tesla) utilize wireless power transmission principle,
A bulb has been lighted in the case of no any wire connection.Wireless power transmission based on magnet coupled resonant type is MIT
The breakthrough that is obtained in wireless power transmission field of scholar, since being disclosed and delivering within 2007, passed in radio energy
Defeated field causes very big repercussion, and increasing scholar is added to the basic research and application of wireless power transmission technology
Exploitation.
In current resonance type wireless electric energy transmission system, high frequency, highly reliable, large power supply realization are always should
Technology is applied to an important problem of high power load transmission of electricity.Traditional radio energy transmission system is generally by driving source, hair
Transmit-receive radio road, receiving circuit and load composition, wherein driving source determines systematic parameter and as the conversion and control of system power supply
Part turns into most important part in wireless power transmission.In order to meet radio energy transmission system high frequency, efficient hair
Exhibition trend, generally use switching mode driving source (power amplifier) such as D classes, E power-like amplifiers, although this power-like amplifier
Theoretical efficiency reached 100%, but power output is relatively low, is only applicable to low power application scenario.It is and powerful at present
The bridge-type inverter that application scenario is formed using IGBT and MOSFET pipes more, while coordinate different Sofe Switch algorithms to realize electricity
Energy is wirelessly transferred, but its working frequency is low, transmission range is short.Therefore, by factors such as power switch pipe and circuit topological structures
Restriction, under existing technical conditions, realize that high frequency (more than MHz), highly reliable, high power switch converter are also quite tired
It is difficult.
Negative resistance is a kind of active block for meeting Ohm's law and connection in series-parallel rule.With resistance on the contrary, the electricity of negative resistance
Pressure, the phase difference of current first harmonics are π, and power in circuit is negative, i.e., discharges electric energy to circuit.Negative resistance has a variety of realizations
Mode, such as formed using positive resistance and amplifier.Conventional negative resistance is used to improve the input impedance of inverting amplifier more, neutralizes LC
Positive resistance of oscillation circuit etc., and seldom to power for circuit as power supply.Negative resistance compares high-frequency inverter, has system
It is simple in construction, without using MOSFET, the advantages that very senior engineer's working frequency can be reached, therefore can solve current high-frequency inverter
Can not further high frequency problem.And the working frequency of system is determined by the value of component in circuit.In a work frequency
Under rate, the efficiency of transmission of system may remain in very high level, and be kept in a very long segment limit with the change of distance
Substantially constant, realize the stable transmission of radio energy.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of parallel connection-parallel connection type based on negative resistance
Radio energy transmission system, using negative resistance produce energy property, realize the energy supply to circuit, so as to instead of it is traditional and
High-frequency inversion source in connection-parallel connection type radio energy transmission system so that the structure of system is simpler, and working frequency is higher,
Efficiency of transmission is more stable.
To achieve the above object, technical scheme provided by the present invention is：Parallel connection based on negative resistance-parallel connection type radio
Energy Transmission system, including the negative resistance being connected and radiating circuit and the receiving circuit being connected and load, the transmitting electricity
Road and receiving circuit realize being wirelessly transferred for electric energy by way of electromagnetic induction coupling；The radiating circuit includes being connected in parallel
Primary side electric capacity and primary side transmitting coil, the primary side transmitting coil includes in the primary side inductance and radiating circuit that are connected in series
Resistance, the radiating circuit internal resistance refer to all positive resistances of radiating circuit in addition to secondary reflexes to the resistance of primary side；The reception
Circuit includes the secondary receiving coil and secondary electric capacity being connected in parallel, and the secondary receiving coil includes the secondary electricity being connected in series
Sense and receiving circuit internal resistance, the receiving circuit internal resistance refer to all positive resistances of receiving circuit in addition to load.
Voltage, the current relationship of the negative resistance meet：vR=-RiR, phase relation satisfaction：Wherein, iRFor stream
Cross the current first harmonics of negative resistance, vRFor the voltage fundamental at negative resistance both ends, R is the resistance of negative resistance,For vRWith iRBetween phase
Potential difference；The power of the negative resistance meets：Wherein, P is the power of negative resistance ,-show that negative resistance is outside
Release energy.
The present invention compared with prior art, has the following advantages that and beneficial effect：
1st, system architecture is simple, and the make of negative resistance is varied.
2nd, the high frequency power source of parallel connection-parallel connection type radio energy transmission system is substituted using negative resistance, can effectively be solved
The technical barrier that high frequency, high power switch converter are difficult at present.
3rd, system operating frequency is determined by components values in circuit.Under this working frequency, system can keep very high
Efficiency, realize stable wireless power transmission.
Brief description of the drawings
Fig. 1 is the system circuit diagram provided in embodiment.
Fig. 2 is the oscillogram of the voltage and current of negative resistance in embodiment.
Fig. 3 is the graph of a relation of efficiency of transmission and transmission range in embodiment.
Embodiment
With reference to specific embodiment, the invention will be further described.
The general principle for the parallel connection based on negative resistance-parallel connection type radio energy transmission system that the present embodiment is provided is profit
There is the characteristic for the electric energy that releases energy, is provided out with negative resistance, for substituting traditional parallel connection-parallel connection type wireless power transmission
High frequency power source in system, so as to the technical barrier for efficiently solving current high frequency, high power switch converter is difficult to.
As shown in figure 1, be the specific implementation circuit of the system, including the negative resistance-R and radiating circuit and phase being connected
The receiving circuit and load R of connectionL, the radiating circuit and receiving circuit realize electric energy by way of electromagnetic induction coupling
It is wirelessly transferred；The radiating circuit includes the primary side electric capacity C being connected in parallel1With primary side transmitting coil, the primary side transmitting coil
Including the primary inductor L being connected in series1With radiating circuit internal resistance RS1, the radiating circuit internal resistance RS1Refer to except secondary reflexes to original
All positive resistances of radiating circuit outside the resistance on side；The receiving circuit includes the secondary receiving coil being connected in parallel and secondary electricity
Hold C2, the secondary receiving coil includes the secondary inductance L that is connected in series2With receiving circuit internal resistance RS2, in the receiving circuit
Hinder RS2Refer to all positive resistances of receiving circuit in addition to load.
For easy analysis, radiating circuit internal resistance R is madeS1With receiving circuit internal resistance RS2Parameter is all unanimously RS；Make primary side electric
Hold C1With secondary electric capacity C2Parameter is all unanimously C；Make primary inductor L1With secondary inductance L2Parameter is all unanimously L.
The coupling mode equations of system are：
In formula,For the intrinsic frequency of transmitting coil and receiving coil,For radiating circuit and receive electricity
The internal resistance loss factor on road,For negative resistance gain coefficient,For the inverse of negative resistance,For load factor,For the inverse of load resistance,The coefficient of coup between transmitting and receiving circuit,For transmitting
Mutual Inductance Coupling coefficient between coil and receiving coil, mutual inductances of the M between primary side inductance and secondary inductance.
The eigenfrequency that system can then be obtained is：
Work as γ1=2 τ0+τLWhen, the electric energy that the negative resistance that is connected with radiating circuit is provided to circuit is completely by radiating circuit
Internal resistance, receiving circuit internal resistance and load absorption.
Assuming that the primary power of system is stored in pattern a1In, if a1(0)=1, a2(0) pattern a can=0, then be obtained1And a2's
Expression formula is：
Then：
The efficiency of transmission of system is：
From above-mentioned equation, if the electric energy of negative resistance offer by radiating circuit internal resistance, receiving circuit internal resistance and is born completely
Carry and absorb, i.e. γ1=2 τ0+τL, when system is operated in κ >=τ0+τLIn region, its working frequency isEfficiency of transmission is keptIt is invariable, when system is operated in κ ＜ τ0+τLIn region,
Its working frequency is ω=ω0, efficiency of transmission between transmitting and receiving circuit the coefficient of coup change, be
If the intrinsic frequency of transmitting coil and receiving coil is f0=2MHz, primary side inductance and secondary inductance are L=10 μ
H, primary side electric capacity and secondary electric capacity are C=0.633nF, and radiating circuit internal resistance and receiving circuit internal resistance are RS=0.5 Ω, bear
Load resistance is RL=2000 Ω.
The voltage fundamental of negative resistance, current first harmonics relation meet：vR=-RiR, phase relation satisfaction：Output work
Rate meetsBy taking Mutual Inductance Coupling coefficient k=0.1 as an example, the voltage fundamental of negative resistance, electric current base as shown in Figure 2
The phase difference of ripple is π, i.e., outwards discharges electric energy.
By formula (6) can obtain system efficiency of transmission and transmission range relation curve as shown on the solid line in figure 3, solid dot is then
It is the efficiency of transmission of the variant transmission range obtained by PSIM circuit simulations, it can be seen that theory analysis is protected with simulation result
Hold consistent.In the electric energy for meeting negative resistance offer completely by radiating circuit internal resistance, receiving circuit internal resistance and load absorption, that is, exist
γ1=2 τ0+τLUnder conditions of, when system is operated in κ >=τ0+τLIn region, efficiency of transmission is keptIt is invariable, when being
System is operated in κ ＜ τ0+τLIn region, efficiency of transmission changes with the coefficient of coup between transmitting and receiving circuit, is
As the above analysis, the parallel connection based on negative resistance-parallel connection type radio energy transmission system of the invention, negative resistance
Property with delivered power, electric energy is provided to circuit, effectively instead of the effect of high frequency power source so that the structure of system
Simpler, simultaneous transmission efficiency can keep substantially constant within the specific limits, be advantageous to the application in more occasions, this hair
The advantages of bright, is it is clear that be worthy to be popularized.
Examples of implementation described above are only the preferred embodiments of the invention, and the implementation model of the present invention is not limited with this
Enclose, therefore the change that all shape, principles according to the present invention are made, it all should cover within the scope of the present invention.
Claims (2)
1. the parallel connection based on negative resistance-parallel connection type radio energy transmission system, it is characterised in that：Including the negative resistance that is connected and
The side that radiating circuit and the receiving circuit being connected and load, the radiating circuit and receiving circuit are coupled by electromagnetic induction
Formula realizes being wirelessly transferred for electric energy；The radiating circuit includes the primary side electric capacity and primary side transmitting coil being connected in parallel, the original
Edge emitting coil includes primary side inductance and the radiating circuit internal resistance being connected in series, and the radiating circuit internal resistance refers to except secondary reflects
To all positive resistances of radiating circuit outside the resistance of primary side；The receiving circuit includes secondary receiving coil and the pair being connected in parallel
Side electric capacity, the secondary receiving coil include secondary inductance and the receiving circuit internal resistance being connected in series, the receiving circuit internal resistance
Refer to all positive resistances of receiving circuit in addition to load.
2. the parallel connection based on negative resistance-parallel connection type radio energy transmission system according to claim 1, it is characterised in that：
Voltage, the current relationship of the negative resistance meet：vR=-RiR, phase relation satisfaction：Wherein, iRTo flow through negative resistance
Current first harmonics, vRFor the voltage fundamental at negative resistance both ends, R is the resistance of negative resistance,For vRWith iRBetween phase difference；Institute
The power for stating negative resistance meets：Wherein, P is the power of negative resistance ,-show that negative resistance outwards releases energy
Amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710934499.7A CN107707032B (en) | 2017-10-10 | 2017-10-10 | Parallel-parallel wireless power transmission system based on negative resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710934499.7A CN107707032B (en) | 2017-10-10 | 2017-10-10 | Parallel-parallel wireless power transmission system based on negative resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107707032A true CN107707032A (en) | 2018-02-16 |
| CN107707032B CN107707032B (en) | 2024-04-05 |
Family
ID=61184971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710934499.7A Active CN107707032B (en) | 2017-10-10 | 2017-10-10 | Parallel-parallel wireless power transmission system based on negative resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107707032B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755006A (en) * | 2019-01-28 | 2019-05-14 | 华南理工大学 | A kind of parallel connection based on PT symmetry principle-parallel connection type iron-free core transformer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102027683A (en) * | 2008-05-13 | 2011-04-20 | 高通股份有限公司 | Method and apparatus with negative resistance in wireless power transfers |
| US20140097791A1 (en) * | 2012-10-04 | 2014-04-10 | Linear Technology Corporation | Auto resonant driver for wireless power transmitter sensing required transmit power for optimum efficiency |
| WO2014139287A1 (en) * | 2013-03-12 | 2014-09-18 | 海尔集团公司 | Wireless power transmission system adapted for multiload dynamic switching |
| WO2015147475A1 (en) * | 2014-03-24 | 2015-10-01 | 주식회사 대만 | Wireless charging device for robot cleaner and method for controlling same |
| CN106532979A (en) * | 2016-12-05 | 2017-03-22 | 华南理工大学 | Fractional-order wireless power transmission system for offsetting internal resistors by using fractional-order capacitors |
| CN107040051A (en) * | 2016-12-14 | 2017-08-11 | 南京航空航天大学 | A kind of radio energy output device of high-output power |
| CN107086674A (en) * | 2017-05-03 | 2017-08-22 | 华南理工大学 | A kind of and series compensation type fractional order inductively radio energy transmission system |
| CN107209213A (en) * | 2015-01-27 | 2017-09-26 | 高通股份有限公司 | For the method and apparatus of the resistance and reactance that tune wireless power transmission machine test cell |
| CN207835160U (en) * | 2017-10-10 | 2018-09-07 | 华南理工大学 | Parallel connection based on negative resistance-parallel connection type radio energy transmission system |
-
2017
- 2017-10-10 CN CN201710934499.7A patent/CN107707032B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102027683A (en) * | 2008-05-13 | 2011-04-20 | 高通股份有限公司 | Method and apparatus with negative resistance in wireless power transfers |
| US20140097791A1 (en) * | 2012-10-04 | 2014-04-10 | Linear Technology Corporation | Auto resonant driver for wireless power transmitter sensing required transmit power for optimum efficiency |
| WO2014139287A1 (en) * | 2013-03-12 | 2014-09-18 | 海尔集团公司 | Wireless power transmission system adapted for multiload dynamic switching |
| WO2015147475A1 (en) * | 2014-03-24 | 2015-10-01 | 주식회사 대만 | Wireless charging device for robot cleaner and method for controlling same |
| CN107209213A (en) * | 2015-01-27 | 2017-09-26 | 高通股份有限公司 | For the method and apparatus of the resistance and reactance that tune wireless power transmission machine test cell |
| CN106532979A (en) * | 2016-12-05 | 2017-03-22 | 华南理工大学 | Fractional-order wireless power transmission system for offsetting internal resistors by using fractional-order capacitors |
| CN107040051A (en) * | 2016-12-14 | 2017-08-11 | 南京航空航天大学 | A kind of radio energy output device of high-output power |
| CN107086674A (en) * | 2017-05-03 | 2017-08-22 | 华南理工大学 | A kind of and series compensation type fractional order inductively radio energy transmission system |
| CN207835160U (en) * | 2017-10-10 | 2018-09-07 | 华南理工大学 | Parallel connection based on negative resistance-parallel connection type radio energy transmission system |
Non-Patent Citations (1)
| Title |
|---|
| 刘潇 等: "分数阶互感及变压器模型的特性分析", 《电源学报》, vol. 15, no. 4, 31 July 2017 (2017-07-31), pages 143 - 149 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755006A (en) * | 2019-01-28 | 2019-05-14 | 华南理工大学 | A kind of parallel connection based on PT symmetry principle-parallel connection type iron-free core transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107707032B (en) | 2024-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6006238B2 (en) | High efficiency variable power transmitter and method | |
| Tan et al. | Transfer efficiency optimal control of magnetic resonance coupled system of wireless power transfer based on frequency control | |
| US20140175868A1 (en) | Electric power supply apparatus, contactless electricity transmission apparatus, vehicle, and contactless electric power transfer system | |
| CN207835167U (en) | Series connection based on negative resistance-tandem type radio energy transmission system | |
| Li et al. | A low-subharmonic, full-range, and rapid pulse density modulation strategy for ZVS full-bridge converters | |
| US10224750B2 (en) | Wireless power transmission apparatus | |
| Guan et al. | Analysis and design of high-frequency converter with resistive matching network and spiral inductor | |
| CN207835161U (en) | Multiple-series type radio energy transmission system based on negative resistance | |
| CN107681789A (en) | Series and parallel type radio energy transmission system based on negative resistance | |
| US10186908B2 (en) | Efficient power transmitting terminal, contactless power transmission device and power transmission method | |
| CN103312051B (en) | A kind of system and method utilizing ferromagnetic resonance to realize wireless power transmission | |
| CN107707032A (en) | Parallel connection type radio energy transmission system in parallel based on negative resistance | |
| CN207835160U (en) | Parallel connection based on negative resistance-parallel connection type radio energy transmission system | |
| CN207835168U (en) | Serial-parallel type radio energy transmission system based on negative resistance | |
| CN107681790A (en) | Series connection tandem type radio energy transmission system based on negative resistance | |
| CN107742926A (en) | The source-series parallel connection type radio energy transmission system of no-voltage based on fractional order electric capacity | |
| CN207926290U (en) | A kind of field coupling single line electric energy transmission system based on negative resistance | |
| Zhao et al. | Bidirectional multi‐resonant converter with a wide voltage range | |
| CN207926287U (en) | No-voltage based on fractional order capacitance is source-series-parallel connection type radio energy transmission system | |
| Sah et al. | Analysis and optimization of wireless power transfer link | |
| CN107733096A (en) | Tandem type radio energy transmission system in parallel based on negative resistance | |
| CN206272351U (en) | A kind of utilization fractional order electric capacity offsets the fractional order radio energy transmission system of internal resistance | |
| CN207835166U (en) | Serial-parallel type radio energy transmission system based on feedback resonance formula power supply | |
| CN207368758U (en) | No-voltage based on fractional order capacitance is source-series-tandem type radio energy transmission system | |
| Kwan et al. | Link efficiency-led design of mid-range inductive power transfer systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |