CN110311473A - A kind of radio energy transmission system with highly resistance offset characteristic - Google Patents

A kind of radio energy transmission system with highly resistance offset characteristic Download PDF

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Publication number
CN110311473A
CN110311473A CN201910620368.0A CN201910620368A CN110311473A CN 110311473 A CN110311473 A CN 110311473A CN 201910620368 A CN201910620368 A CN 201910620368A CN 110311473 A CN110311473 A CN 110311473A
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China
Prior art keywords
coil
transmitting
unit
receiving
series
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Inventor
柯光洁
陈乾宏
高伟
朱星宇
徐立刚
温振霖
任小永
张之梁
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Jiangsu Zhanxin Semiconductor Technology Co Ltd
Nanjing University of Aeronautics and Astronautics
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Jiangsu Zhanxin Semiconductor Technology Co Ltd
Nanjing University of Aeronautics and Astronautics
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Priority to CN201910620368.0A priority Critical patent/CN110311473A/en
Publication of CN110311473A publication Critical patent/CN110311473A/en
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    • 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
    • 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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices

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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)

Abstract

The invention discloses a kind of radio energy transmission systems with highly resistance offset characteristic, including sequentially connected power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2, current rectifying and wave filtering circuit and load resistance.Transmitting unit P1 includes the transmitting coil T1 and impedance unit Z01 being connected in series, transmitting unit P2 includes the transmitting coil T2 and impedance unit Z02 being connected in parallel, receiving unit S1 includes that receiving coil R1 and impedance unit Z03 is connected in series, and receiving unit S2 includes the receiving coil R2 and impedance unit Z04 being connected in parallel.Pass through mutual inductance M between transmitting coil T1 and receiving coil R1vCoupling passes through mutual inductance M between transmitting coil T2 and receiving coil R2iCoupling.Utilize mutual inductance MvWith MiCharacteristic in the case where deviating operating condition with increasing or with subtracting, output pulsation caused by greatly reducing because of transmitting coil and the change of receiving coil relative position guarantee that stablizing under high offset operating condition exports.

Description

A kind of radio energy transmission system with highly resistance offset characteristic
Technical field
The present invention relates to a kind of radio energy transmission systems, belong to field of conversion of electrical energy.
Background technique
Non-contact power realizes " wireless power " using magnetic field coupling, i.e., the non-contact transformation being kept completely separate using former secondary side Device, by the coupled transfer electric energy of high frequency magnetic field, so that primary side (supply side) and secondary side (electricity consumption side) in energy transfer process It is not physically connected.Compared with traditional contact power supply, non-contact power is easy to use, safe, no-spark and Danger Electric shock risk, Without dust accumulation and contact loss, no mechanical wear and corresponding maintenance issues are suitable for a variety of bad weathers and environment, convenient for real Existing automatic power, is with a wide range of applications.
However, the former secondary side relative position of non-contact transformer changes so that transformer parameter wide variation, leads to system The fluctuation of output and being remarkably decreased for efficiency of transmission limit the popularization and application of WPT technology.
In order to improve the anti-excursion capability of radio energy transmission system, Auckland Mickel Budhia, John T.Boys, Grant A.Covic and Chang-Yu Huang,"Development of a Single-Sided Flux Magnetic Coupler for Electric Vehicle IPT Charging Systems"IEEE Transactions on Industrial Electronics, vol.60, no.1, January 2013 is proposed in two winding of non-contact transformer pair side (by abbreviation DD winding) is intermediate to be superimposed the tertiary winding (by abbreviation Q winding) Chong Die with vice-side winding, reduces secondary output power Transversion malposition susceptibility, " induction blind spot " when preferably solving dislocation in " being completely counterbalanced by into and out of magnetic flux " and influence The problem of transformer efficiency transmittability.But the winding construction of this DDQ is only capable of improving non-contact transformer in transversion malposition Under the conditions of output characteristics, the variation (i.e. air gap variation) to former secondary side vertical range, the output of the winding construction of this " DDQ " Still great changes have taken place for characteristic.In view of size of gaps and misalignment before the former secondary side of non-contact transformer in practical application Uncertainty, it is still necessary to further inquire into research.
Chinese patent 201720241345.5, a kind of voltage source and the non-contact translation circuit of current source complex incentive are using non- Contact transformation device output characteristics under constant pressure source forcing is inversely proportional with the former secondary side coefficient of coup (mutual inductance) of non-contact transformer, The output characteristics characteristic directly proportional to non-contact transformer former secondary side the coefficient of coup (mutual inductance) under constant current source forcing, by voltage source With current source complex incentive, combination is exported, reduction system output pulsation because caused by changing mutual inductance, but its circuit structure Complexity needs a large amount of passive element, higher cost.
Summary of the invention
Goal of the invention: being directed to the above-mentioned prior art, propose a kind of radio energy transmission system with highly resistance offset characteristic, Effectively improve the stability of output characteristics under the conditions of variable coupling coefficient.
Technical solution: a kind of radio energy transmission system with highly resistance offset characteristic, including power supply E, transmitting unit P1, Transmitting unit P2, receiving unit S1, receiving unit S2, current rectifying and wave filtering circuit and load resistance；
The transmitting unit P1 includes the transmitting coil T1 and impedance unit Z01 being connected in series；
The transmitting unit P2 include transmitting coil T2, series impedance unit Z02a and parallel impedance unit Z02b, T2 with Z02a is connected in parallel with Z02b again after being connected in series or T2 and Z02b be connected in parallel after be connected in series again with Z02a；
The receiving unit S1 includes the receiving coil R1 and impedance unit Z03 being connected in series；
The receiving unit S2 includes simultaneously receiving coil R2, series impedance unit Z04a and parallel impedance unit Z04b, R2 Be connected in parallel again with Z04b after being connected in series with Z04a or R2 and Z04b be connected in parallel after be connected in series again with Z04a；
Described impedance unit Z01, Z03, Z02a, Z04a are for conducting wire or single inductance or single capacitor or by multiple inductance capacitances Series and parallel combination；
The impedance unit Z02 and/or Z04 is single inductance or single capacitor or is combined by multiple inductance capacitance series and parallels；
Wherein: the power supply E and transmitting unit P1, transmitting unit P2 are sequentially connected in series, the receiving unit S2, receiving unit S1, current rectifying and wave filtering circuit and load resistance are sequentially connected in series, and pass through mutual inductance M between the transmitting coil T1 and receiving coil R1vCoupling It closes, passes through mutual inductance M between the transmitting coil T2 and receiving coil R2iCoupling；
Or the power supply E and transmitting unit P1, transmitting unit P2 are sequentially connected in series, the receiving unit S1 and receiving unit S2 It is sequentially connected in series after being connected in parallel with current rectifying and wave filtering circuit and load resistance, leads between the transmitting coil T1 and receiving coil R2 Cross mutual inductance MvCoupling passes through mutual inductance M between the transmitting coil T2 and receiving coil R1iCoupling；
Or the transmitting unit P1 it is in parallel with transmitting unit P2 after powered by power supply E, the receiving unit S2, receiving unit S1, current rectifying and wave filtering circuit and load resistance are sequentially connected in series, and pass through mutual inductance M between the transmitting coil T1 and receiving coil R2vCoupling It closes, passes through mutual inductance M between the transmitting coil T2 and receiving coil R1iCoupling；
Or the transmitting unit P1 it is in parallel with transmitting unit P2 after powered by power supply E, the receiving unit S1 and receive single First S2 is sequentially connected in series after being connected in parallel with current rectifying and wave filtering circuit and load resistance, the transmitting coil T1 and receiving coil R1 it Between pass through mutual inductance MvCoupling passes through mutual inductance M between the transmitting coil T2 and receiving coil R2iCoupling.
Further, pass through the line of the setting transmitting coil T1, transmitting coil T2, receiving coil R1 and receiving coil R2 Coil structures and phase position, so that between transmitting coil T1 and transmitting coil T2, between transmitting coil T1 and receiving coil R1, Between transmitting coil T2 and receiving coil R1, without magnetic flux under no drift condition between receiving coil R1 and receiving coil R2 Coupling or weak magnetic coupling.
It is and existing the utility model has the advantages that a kind of radio energy transmission system with highly resistance offset characteristic proposed by the invention The technical characteristics that technology is compared are, using double transmitting coils, double reception loop construction, to utilize mutual inductance Mv under offset operating condition Characteristic with Mi with increasing, with subtracting constructs output voltage or output electric current with the non-monotonic variation of mutual inductance, so that shifting When, system still can have stable output voltage or output electric current under constant input condition, improve the anti-offset of system Ability.
Detailed description of the invention
Fig. 1 is one schematic diagram of non-contact transformer structure structure；
Fig. 2 is the primary side structural schematic diagram of non-contact transformer structure structure one；
Fig. 3 is two schematic diagram of non-contact transformer structure；
Fig. 4 is three schematic diagram of non-contact transformer structure；
Fig. 5 is four schematic diagram of non-contact transformer structure；
Fig. 6 is five schematic diagram of non-contact transformer structure；
Fig. 7 is six schematic diagram of non-contact transformer structure；
Fig. 8 is seven schematic diagram of non-contact transformer structure；
Fig. 9 is eight schematic diagram of non-contact transformer structure；
Figure 10 is nine schematic diagram of non-contact transformer structure；
Figure 11 is one circuit diagram of embodiment；
Figure 12 is the calculated result after the output current gain mark of one circuit of embodiment；
Figure 13 is two circuit diagram of embodiment；
Figure 14 is the calculated result after the output voltage gain mark of circuit shown in embodiment two；
Figure 15 is embodiment three-circuit schematic diagram；
Figure 16 is example IV circuit diagram；
Figure 17 is five circuit diagram of embodiment；
Figure 18 is six circuit diagram of embodiment；
Figure 19 is seven circuit diagram of embodiment；
Figure 20 is eight coupling inductance of embodiment using forward series connection form circuit diagram；
Figure 21 is that eight coupling inductance of embodiment uses isolated form structural circuit schematic diagram；
Figure 22 is eight coupling inductance of embodiment and non-contact transformer winding integrated form circuit diagram；
Figure 23 is nine coupling inductance of embodiment using forward series connection form circuit diagram；
Figure 24 is nine coupling inductance of embodiment and non-contact transformer winding integrated form circuit diagram；
Figure 25 is ten coupling inductance of embodiment using forward series connection form circuit diagram；
Figure 26 is that ten coupling inductance of embodiment uses isolated form structural circuit schematic diagram；
Figure 27 is ten coupling inductance of embodiment and non-contact transformer winding integrated form circuit diagram.
Figure 28 is 11 circuit diagram of embodiment；
Figure 29 is 12 circuit diagram of embodiment；
Figure 30 is ten three-circuit schematic diagram of embodiment；
Figure 31 is 14 circuit diagram of embodiment；
Figure 32 is test case one, the coefficient of coup of the non-contact transformer under different air gap used in test case two and mutually Sensed quantity result；
Figure 33 is the measurement result that test case one exports electric current under the conditions of the different coefficients of coup, different loads；
Figure 34 is the measurement result of output voltage under the conditions of the different coefficients of coup, different loads of test case two；
Figure 35 is the radio energy transmission system topological structure schematic diagram that the present invention has highly resistance offset characteristic.
Specific embodiment
Further explanation is done to the present invention with reference to the accompanying drawing.
Transmitting unit P1, transmitting unit used in radio energy transmission system with highly resistance offset characteristic of the invention P2, receiving unit S1, receiving unit S2 are realized that Fig. 1 is the structural schematic diagram of non-contact transformer, non-by non-contact transformer Contact transformer by the first transmitting coil 102, the second transmitting coil 103, the first receiving coil 202, the second receiving coil 203, Primary side magnetic core 101 and secondary side magnetic core 201 form.Fig. 1 is intended to illustrate the loop construction of non-contact transformer, is not influencing function Under the premise of, magnetic core used can be transformed into other magnetic core shapes such as edge expansion type magnetic core, array-type magnetic core, cross magnetic core Shape.
Nine kinds of structure types of non-contact transformer are set forth in FIG. 1 to FIG. 9, and winding is flowed through in arrow expression as shown in the figure Current direction.Due to former vice-side winding symmetrical configuration, Fig. 3~Figure 10 only gives the primary side winding knot of non-contact transformer Structure schematic diagram, the available non-contact transformer structure of corresponding diagram 1.
It is connect as shown in Figure 1, non-contact transformer is secondary from top to bottom for secondary side magnetic core 201, the first receiving coil 202, second Take-up circle 203, air gap, the first transmitting coil 102, the second transmitting coil 103, primary side magnetic core 102, the first transmitting coil 102 with The orthogonal lap wound of second transmitting coil 103 is in primary side core center region, and the first receiving coil 202 and the second receiving coil 203 are just It is overlapping to be wound on secondary side core center region, wherein the square coil that the first transmitting coil 102 is opposite by generation flow direction 102A, 102B composition, the flow direction that 102A is generated is outside perpendicular to paper, and the flow direction that 102B is generated is perpendicular to paper Inwardly, closure is formed, the second transmitting coil 103 is made of opposite square coil 103A, 103B of generation flow direction, The flow direction that 103A is generated is outside perpendicular to paper, and the flow direction that 103B is generated is inside perpendicular to paper, forms closure, As shown in Figure 2.102 symmetrical configuration of first receiving coil 202 and the first transmitting coil, the second receiving coil 203 and the second transmitting 103 symmetrical configuration of coil.Then the first transmitting coil 102 and the first receiving coil 202 are positive couple, the second transmitting coil 103 and , there are two magnetic flux coupling channels always in the positive coupling of the second receiving coil 203.
As shown in Fig. 2, the first transmitting coil 102 generation that the second transmitting coil 103 is coupled to mutually is supported into and out of magnetic flux Disappear, is coupled between 103 and 102 there is no magnetic flux, mutual inductance M1It is almost nil.Due to the first receiving coil 202 and the first emission lines Enclose 102 symmetrical configurations, 103 symmetrical configuration of the second receiving coil 203 and the second transmitting coil, then receiving coil 202 and 203 it Between also there is no magnetic flux couple, mutual inductance M2It also is zero；Similarly, in magnetic core face, the coupling of the first receiving coil 202 To the magnetic flux that generates of the second transmitting coil 103 into and out of being completely counterbalanced by, the first emission lines that the second receiving coil 203 is coupled to The magnetic flux that circle 102 generates is into and out of being completely counterbalanced by, mutual inductance M3And M4It is zero.Due in migration process, the first transmitting coil 102 Remain constant with the relative position of the second transmitting coil 103, the first receiving coil 202 and the second receiving coil 203, because This mutual inductance M1And M2It is always zero.
When primary side position is fixed, when shifting in +Z direction, former pair side magnetic core is still just on non-contact transformer pair side It is right, there is mutual inductance M1、M2、M3And M4It is zero；First transmitting coil 102 is coupled with 202 forward direction of the first receiving coil, the second transmitting Coil 103 and the second receiving coil 203 are positive couple, but couples magnetic flux correspond to the magnetic resistance of magnetic circuit can be due to magnetic flux path extension Increase, mutual inductance Mi、MvReduce.When non-contact transformer pair side shifts in the X direction, mutual inductance M1And M2It is zero, receives The magnetic flux that the second transmitting coil 103 that coil 202A, 202B are coupled to generates is into and out of cannot be completely counterbalanced by, 202A and 202B coupling Close the generation of coil 103 flow direction is identical, active area is equal, since 202A and 202B is forward connected in series, first is connect The second transmitting coil useful flux that take-up circle 202 is coupled to is zero, so that mutual inductance M4It is zero；Similarly, it can be found that M3It also is zero.When X-direction offset occurs, the first transmitting coil 102 and the first receiving coil 202, the second transmitting coil 103 and The magnetic resistance that the magnetic flux of second receiving coil 203 coupling corresponds to magnetic circuit increases, winding positive area reduces, and leads to mutual inductance Mi、Mv? Reduce.But the magnetic flux that coil 203 is coupled to is existed simultaneously into and out of counteracting, so that effectively magnetic conductive area greatly reduces, and then is made Obtain MiDownward trend is faster；As shown in Figure 1, the size of coil 102,202 in the X direction is less than coil 103,203 in X-direction Size, then when X-direction deviates, the positive area of the first transmitting coil 102 and the first receiving coil 202 is compared to the second hair The positive area of ray circle 103 and the second receiving coil 203 reduces more, then, can by the length-width ratio of rationally setting coil So that mutual inductance Mi、MvWith the reduction of approximately equal amplitude.
Similar to the magnetic flux coupled characteristic under X-direction dislocation, it can be found that under misplacing in the Y direction, non-contact change shown in Fig. 1 Depressor has mutual inductance M1、M2、M3And M4It is zero, mutual inductance Mi、MvWith the reduction of approximately equal amplitude.
Fig. 3 gives non-contact transformer used in the radio energy transmission system with highly resistance offset characteristic of the invention Two schematic diagram of structure.First transmitting coil 102 lap wound orthogonal with the second transmitting coil 103 in primary side core center region, wherein First transmitting coil 102 is made of generation flow direction opposite square coil 102A, 102B, the flow direction that 102A is generated Outside perpendicular to paper, the flow direction that 102B is generated is inside perpendicular to paper, forms closure, the second transmitting coil 103 is by producing Magnetisation leads to contrary square coil 103A, 103B composition, and the flow direction that 103A is generated is outside perpendicular to paper, 103B The flow direction of generation is inside perpendicular to paper, forms closure.Loop construction is similar with Fig. 1, and difference is the length-width ratio of coil It is different.
Fig. 4 gives non-contact transformer used in the radio energy transmission system with highly resistance offset characteristic of the invention Three schematic diagram of structure.First transmitting coil 102 by being divided to square coil 102A, 102B for being wound on two magnetic core side columns in X direction It is forward connected in series, the second transmitting coil 103 is by being divided to square coil 103A, 103B for being wound on two magnetic core side columns along Y-direction It is forward connected in series, arrow as shown in the figure indicates to flow through the current direction of winding.Magnetic flux characteristic is similar with Fig. 1, in X, Y, the side Z When shifting upwards, mutual inductance M1、 M2、M3And M4It is zero, mutual inductance Mi、MvReduce.
Fig. 5 gives non-contact transformer used in the radio energy transmission system with highly resistance offset characteristic of the invention Four schematic diagram of structure.First transmitting coil 102 surrounds the vertical coiling of magnetic core along Y-direction, and the second transmitting coil 103 encloses in X direction Around the vertical coiling of magnetic core, arrow as shown in the figure indicates to flow through the current direction of winding.Then the first transmitting coil 102 generates magnetic flux Path is circulated in X direction, parallel with the second transmitting coil 103, and the useful flux that 102 coils that coil 103 is coupled to generate is Zero, mutual inductance M1It is zero, due to former vice-side winding symmetrical configuration, mutual inductance M3 is also zero.In magnetic core face, the first transmitting The flow direction that coil 102 generates is parallel with the second receiving coil 203, the flow direction and the of the second transmitting coil 103 generation One receiving coil is parallel, and couples magnetic flux zero leads to mutual inductance M3And M4It is zero.When primary side position is fixed, non-contact transformer pair While when shifting in +Z direction, magnetic core still face in former pair side has mutual inductance M1、M2、M3And M4It is zero；First emission lines Circle 102 is coupled with 202 forward direction of the first receiving coil, and the second transmitting coil 103 is coupled with 203 forward direction of the second receiving coil, but coupling The magnetic resistance that magnetic flow corresponds to magnetic circuit can increase because magnetic flux path extends, mutual inductance Mi、 MvReduce.When non-contact transformer pair side When shifting in the x, y direction, mutual inductance M1And M2It is zero, the magnetic flux that the first transmitting coil 102 generates circulates in X direction, with Receiving coil 203 is parallel, and the magnetic flux that the second transmitting coil 103 generates circulates along Y-direction, parallel with receiving coil 202, so that Mutual inductance M3、M4It is zero.The first transmitting coil 102 and the first receiving coil 202, the second transmitting coil 103 and second receive simultaneously The magnetic resistance that the magnetic flux that coil 203 couples corresponds to magnetic circuit increases, winding positive area reduces, and leads to mutual inductance Mi、 MvReduce.
Fig. 6 gives non-contact transformer used in the radio energy transmission system with highly resistance offset characteristic of the invention Five schematic diagram of structure.First transmitting coil 102 is made of coil 102A, the 102B for being symmetrically distributed in magnetic core two sides along Y-direction, Coil 102A, 102B surround the vertical coiling of magnetic core in X direction, and the second transmitting coil 103 by being symmetrically distributed in magnetic core in X direction Coil 103A, 103B of two sides are formed, and coil 103A, 103B surround the vertical coiling of magnetic core, arrow table as shown in the figure along Y-direction Show the current direction for flowing through winding.Its magnetic flux coupled characteristic is similar with Fig. 4, when shifting in the X, Y, Z direction, mutual inductance M1、 M2、M3And M4It is zero, mutual inductance Mi、MvReduce.
Fig. 7 gives non-contact transformer used in the radio energy transmission system with highly resistance offset characteristic of the invention Six schematic diagram of structure.First transmitting coil 102 is connected in series by two square coils being distributed on one diagonal line of rectangle, Second transmitting coil 103 is connected in series by two square coils being distributed on another diagonal line of rectangle.Pass through rational design The overlapping area of coil 102 and coil 103, the magnetic flux that the transmitting coil 103 that transmitting coil 102 can be made to be coupled to generates Into and out of being completely counterbalanced by, mutual inductance M1It is zero.Since former secondary side symmetrical configuration has mutual inductance M then when Z-direction misplaces1、M2、M3And M4 It is zero.But when X-direction, Y-direction dislocation occurs, mutual inductance M1、M2It is still zero, but receiving coil 202 is coupled to transmitting The magnetic flux that coil 103 generates into and out of cannot offset, receiving coil 203 be coupled to the magnetic flux of the generation of transmitting coil 102 into and out of Mutual inductance, M cannot be offset3And M4It is not zero, increases with the increase of dislocation distance；First transmitting coil 102 and the simultaneously The magnetic resistance increase of one receiving coil 202, the second transmitting coil 103 magnetic circuit corresponding with the magnetic flux that the second receiving coil 203 couples, Winding positive area reduces, and leads to mutual inductance Mi、MvReduce.Magnetic core is not drawn into figure.
Fig. 8 gives non-contact transformer used in the radio energy transmission system with highly resistance offset characteristic of the invention Seven schematic diagram of structure.Arrow indicates current direction in winding in figure.First transmitting coil 102 is by generation flow direction opposite Square coil 102A, 102B composition, the flow direction that 102A is generated is inside perpendicular to paper, and the flow direction that 102B is generated hangs down It is directly outside in paper, closure is formed, the second transmitting coil 103 is by identical square coil 103A, 103B group of generation flow direction At it is outside that the flow direction that 103A, 103B are generated is each perpendicular to paper.The transmitting coil that transmitting coil 103A, 103B are coupled to 102 magnetic fluxs generated are into and out of being completely counterbalanced by, mutual inductance M1It is zero.Due to former secondary side symmetrical configuration, then when Z-direction misplaces, There is mutual inductance M1、M2、M3And M4It is zero.Occur X-direction offset when, receiving coil 203A, 203B be coupled to first transmitting For the magnetic flux that coil 102 generates into and out of being completely counterbalanced by, the first transmitting coil useful flux that receiving coil 203 is coupled to is zero, So that mutual inductance M3It is zero；Similarly, due to former secondary side symmetrical configuration, it can be found that M4It also is zero；First emission lines simultaneously Enclose 102 magnetic circuits corresponding with the magnetic flux that the first receiving coil 202, the second transmitting coil 103 are coupled with the second receiving coil 203 Magnetic resistance increases, winding positive area reduces, and leads to mutual inductance Mi、MvReduce.When Y-direction offset occurs, mutual inductance Mi、MvSubtract It is small, while the overlapping area by rationally designing coil 102 (202) and coil 103A (203A), 103B (203B), it can make The magnetic flux that generates of the coil 103 that is coupled to of coil 102 into and out of cancelling out each other, mutual inductance M3、M4It is zero.
Fig. 9 gives non-contact transformer used in the radio energy transmission system with highly resistance offset characteristic of the invention Eight schematic diagram of structure.Arrow indicates current direction in winding in figure.First transmitting coil 102 is by generation flow direction opposite Square coil 102A, 102B composition, the flow direction that 102A is generated is inside perpendicular to paper, and the flow direction that 102B is generated hangs down It is directly outside in paper, closure is formed, 103 lap wound of the second transmitting coil is at the center of the first transmitting coil 102.Transmitting coil 103 The magnetic flux that the transmitting coil 102 that is coupled to generates is into and out of being completely counterbalanced by, mutual inductance M1It is zero.Due to former secondary side symmetrical configuration, Then when Z-direction misplaces, there is mutual inductance M1、M2、M3And M4It is zero.When Y-direction offset occurs, what receiving coil 203 was coupled to The magnetic flux left-half that transmitting coil 102 generates is separated into, right side, and total useful flux is zero, so that mutual inductance M3It is zero, class As, due to former secondary side symmetrical configuration, it can be found that M4It also is zero；First transmitting coil 102 and the first receiving coil simultaneously 202, the magnetic resistance increase of the second transmitting coil 103 magnetic circuit corresponding with the magnetic flux that the second receiving coil 203 couples, winding right opposite Product reduces, and leads to mutual inductance Mi、MvReduce.When X-direction offset occurs, mutual inductance Mi、MvReduce, but receiving coil 203 (202) magnetic flux that the transmitting coil 102 (103) that is coupled to generates is into and out of cannot offset, mutual inductance M3、M4It is gradually increased.
Figure 10 gives non-contact transformation used in the radio energy transmission system with highly resistance offset characteristic of the invention Nine schematic diagram of device structure.Arrow indicates current direction in winding in figure.First transmitting coil, 102 lap wound is in the second transmitting coil 103 tops, the overlapping of two coiler parts can make transmitting coil 103 be coupled to by designing the overlapping area of two coils The magnetic flux that transmitting coil 102 generates is into and out of being completely counterbalanced by, mutual inductance M1It is zero.Due to former secondary side symmetrical configuration, then in Z-direction When dislocation, there is mutual inductance M1、M2、M3And M4It is zero.When Y-direction offset occurs, transmitting coil that receiving coil 203 is coupled to The 102 magnetic flux some generated go out into, some, and total useful flux is zero, mutual inductance M3It is zero, similarly, due to former secondary side structure pair Claim, M4It also is zero；The first transmitting coil 102 and the first receiving coil 202, the second transmitting coil 103 and second receive line simultaneously The magnetic resistance that the magnetic flux of 203 coupling of circle corresponds to magnetic circuit increases, winding positive area reduces, and leads to mutual inductance Mi、MvReduce.Occurring When X-direction deviates, mutual inductance Mi、MvReduce, but the transmitting coil 102 (103) that receiving coil 203 (202) is coupled to generates Magnetic flux into and out of cannot offset, mutual inductance M3、M4It is gradually increased.
Based on non-contact transformer structure shown in FIG. 1, the work that can further analyze technical solution of the present invention is former Reason.It is worth noting that, the radio energy transmission system with highly resistance offset characteristic of the invention requires in migration process, Mutual inductance M1、M2、M3And M4Value very little, close to zero or be equal to zero, only exist mutual inductance Mi、Mv, while with the increasing of offset distance Add, Mv、MiIncrease together or subtracts together, corresponding coefficient of coup kv、kiApproximation meets linear relationship variation, i.e. kv≈aki+ b, a, b For constant.In embodiment below, non-contact transformer structure shown in FIG. 1 can be freely combined with circuit topology.
The composition of radio energy transmission system include be sequentially connected DC voltage source, high-frequency inverter, resonant transformation unit, Current rectifying and wave filtering circuit R and load RL.To highlight design focal point of the invention, taking AC/AC resonant transformation unit therein is this hair Bright research object.For the efficiency for improving non-contact converter, converter work is typically designed near resonant frequency point, it is humorous Vibration inductive current near sinusoidal can then use fundamental wave approximate analysis method, the variable in resonant network is all used its fundametal compoment Substitution.It is an alternating-current voltage source by high-frequency inverter output equivalentWhen rectifier bridge is continuously turned on, bridge arm midpoint Always same phase, current rectifying and wave filtering circuit are equivalent to a load resistance R to voltage and currentE, meet RE=8/ π2RL, REFor equivalent negative Carry resistance, RLFor load resistance.Wherein there are many optional circuit of high-frequency inverter, including recommend, half-bridge, full-bridge circuit etc., whole The optional circuit for flowing filter circuit R is also very much, including bridge rectifier, full-wave rectification, halfwave rectifier, times stream rectification, voltage multiplying rectifier Deng.
Embodiment one:
Figure 11 gives the electricity with the first embodiment of the radio energy transmission system of highly resistance offset characteristic of the invention Line structure figure.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load resistance RE。 Power supply E includes alternating-current voltage sourceWith inductance Lr, capacitor CrThe LC resonance network of composition；Transmitting unit P1 includes being connected in series Transmitting coil LpvWith resonant capacitance Cpv；Transmitting unit P2 includes the transmitting coil L being connected in parallelpiWith resonant capacitance Cppi；It receives Cell S 1 includes the receiving coil L being connected in seriessiWith resonant capacitance Csi；Receiving unit S2 includes receiving coil Lsv, resonance electricity Hold CspvWith resonant inductance Lrs, wherein LsvWith CspvAfter being connected in parallel again with LrsIt is connected in series.Power supply E and transmitting unit P1, transmitting Unit P2 is sequentially connected in series, receiving unit S2 and receiving unit S1 be connected in parallel after to load resistance REPower supply, transmitting coil LpvWith Receiving coil LsvBetween pass through mutual inductance MvCoupling, transmitting coil LpiWith receiving coil LsiPass through mutual inductance MiCoupling.
Resonant element parameter meets:
Wherein, ω0For resonance frequency.LrWith CrResonance flows through transmitting coil LpvElectric currentIt is constant.It is basic according to circuit Theory can be in the hope of resonance frequency omega0Under flow through transmitting coil Lpv, transmitting coil Lpi, receiving coil LsiWith receiving coil Lsv's Electric currentWithIt is respectively as follows:
Further, output current gain is respectively as follows: with input impedance
Wherein,To export electric current.kv、kiFor mutual inductance Mv、MiThe corresponding coefficient of coup.Under the conditions of full remuneration, the present invention The output current gain of embodiment one is unrelated with load, and input impedance is always pure resistance.By the non-contact transformation provided in Fig. 1 Device structure, it can be found that when the secondary side of non-contact transformer shifts with respect to primary side, mutual inductance Mv、MiVariation tendency is identical. For being deviated along +Z direction, Mv、MiReduce, accordingly Mv/LsvReduce, and Lpi/MiIt will increase, by rationally designing transformation Device parameter, so thatIncrementss compensate ω0MvReduction amount, then can be realized in certain deviation operating condition Constant current output, improves the anti-offset characteristic of radio energy transmission system.
Enable kv=aki+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of output current gain Minimum point and corresponding coefficient of coup keAre as follows:
Giv(k) it indicates to export current gain, G when the coefficient of coup is kiv(ke) it is k=keWhen output current gain, into One step, output current gain mark with minimum, is had
Giv* (k) indicates that the coefficient of coup is the output current gain after k markers.Assuming that a=1, b=0, take different ke Value, the curve that the output current gain after can drawing mark changes with the coefficient of coup is as shown in figure 12, it can be found that after mark Output current gain with the non-monotonic variation of the coefficient of coup, it is gentle in Near The Extreme Point variation, then pass through designIt can be in given coefficient of coup section [kmin, kmax] in, it realizes the smallest output current fluctuation, mentions The anti-offset characteristic of high radio energy transmission system.
When coefficient of coup k is in section [kmin, kmax] in variation when, and ke∈[kmin, kmax], define output current fluctuation Givmax ForExport current gain maximum value, Givmin ForExport current gain minimum value, then it is defeated as can be seen from FIG. 12 Current fluctuation ξ is out
Giv(kmax) it is expressed as k=kmaxWhen output current gain, Giv(kmin) it is expressed as k=kminWhen output electric current Gain.Resonant element parameter meets in the embodiment of the present invention oneWhen, it can be in effective coupling coefficient section [kmin, kmax] realize the smallest output current fluctuation.Proof procedure is as follows:
Output current gain when the coefficient of coup is k can be expressed as
∵max{Giv(kmax), Giv(kmax)}≥Giv(kmax), max { Giv(kmax), Giv(kmin)}≥Giv(kmin)
∴And if only if Giv(kmax)=Giv(kmin) when take equal sign
And if only if ke 2=kminkmaxWhen take equal sign
It will be proven below obtaining the condition of equal sign while set up, work as Giv(kmax)=Giv(kmin) when, have
∵kmax> kmin∴
Embodiment two:
Figure 13 gives the electricity of second of embodiment of radio energy transmission system with highly resistance offset characteristic of the invention Line structure figure.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load resistance RE。 Power supply E includes alternating-current voltage sourceWith inductance Lr1, capacitor Cr, inductance Lr2The LC resonance network of composition；Transmitting unit P1 includes string Join the transmitting coil L of connectionpvWith resonant capacitance Cpv；Transmitting unit P2 includes transmitting coil Lpi, resonant capacitance Cppi、CpsiIt is harmonious Shake inductance Lsr, wherein transmitting coil LpiWith capacitor CpsiAfter series connection with capacitor CppiParallel connection, then with resonant inductance LsrSeries connection Connection；Receiving unit S1 includes the receiving coil L being connected in seriessvWith resonant capacitance Csv；Receiving unit S2 includes receiving coil Lsi, resonant capacitance Cssi、CspiWith resonant inductance Lssi, wherein LsiWith CssiAfter series connection with CspiBe connected in parallel, then with Lssi It is connected in series.It is powered after transmitting unit P1 is in parallel with transmitting unit P2 by power supply E, receiving unit S2 is in parallel with receiving unit S1 Load resistance R is given after connectionEPower supply, transmitting coil LpvWith receiving coil LsvBetween pass through mutual inductance MvCoupling, transmitting coil LpiWith connect Take-up circle LsiPass through mutual inductance MiCoupling.
Resonant element parameter meets:
Wherein, ω0For resonance frequency.Lr1With CrResonance, electric currentIt is constant.It can be in the hope of resonance according to Basis Theory of Circuitry Frequencies omega0Under flow through transmitting coil Lpv, transmitting coil Lpi, receiving coil LsiWith receiving coil LsvElectric currentWithIt is respectively as follows:
Further, output voltage gain is respectively as follows: with input impedance
Wherein,For output voltage.kv、kiFor mutual inductance Mv、MiIt is corresponding The coefficient of coup.Under the conditions of full remuneration, the output voltage gain of the embodiment of the present invention two is unrelated with load, and input impedance is always For pure resistance.Enable ki=akv+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of output voltage gain Maximum point and corresponding coefficient of coup keAre as follows:
Gvv(ke) it is k=keWhen output voltage gain further output voltage gain is marked with maximum , have
Gvv* (k) indicates that the coefficient of coup is the output voltage gain after k markers.Assuming that a=1, b=0, take different ke Value, the curve that the output voltage gain after can drawing mark changes with the coefficient of coup is as shown in figure 14, it can be found that after mark Output voltage gain with the non-monotonic variation of the coefficient of coup, it is gentle in Near The Extreme Point variation, then by reasonably designing ke Value, can be in given coefficient of coup section [kmin, kmax] in, it realizes the smallest output voltage fluctuation, improves radio energy and pass The anti-offset characteristic of defeated system.
It is different from embodiment one, the embodiment of the present invention two can be realized in the wider coefficient of coup and load variation range Constant voltage output.
When coefficient of coup k is in section [kmin, kmax] in variation when, and ke∈[kmin, kmax], defining output voltage fluctuation is GvvmaxTo export current gain maximum value, GvvminIt is to export current gain minimum value, then defeated as can be seen from FIG. 14 Voltage fluctuation ξ is out
Gvv(kmax) it is expressed as k=kmaxWhen output voltage gain, Gvv(kmin) it is expressed as k=kminWhen output voltage Gain.Resonant element parameter meets in the embodiment of the present invention twoWhen, it can be in effective coupling coefficient section [kmin, kmax] realize the smallest output voltage fluctuation.Proof procedure is as follows:
Output voltage gain when the coefficient of coup is k can be expressed as
It enables
∵H(kmax)≤max(H(kmax), H (kmin)), H (kmin)≤max(H(kmax), H (kmin))
∴And if only if H (kmax)=H (kmin) when take equal sign
And if only if ke 2=kminkmaxWhen take equal sign
Gvv(k) the output voltage gain when coefficient of coup is k is indicated；
It will be proven below obtaining the condition of equal sign while set up, as H (kmax)=H (kmin) when, have
Wherein H (x) is expressed as the value of H when coefficient of coup k is x.
Embodiment three:
Figure 15 gives the electricity with the third embodiment of the radio energy transmission system of highly resistance offset characteristic of the invention Line structure figure.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load resistance RE。 Power supply E includes alternating-current voltage sourceWith inductance Lr, resistance CrThe LC resonance network of composition；Transmitting unit P1 includes being connected in series Transmitting coil LpvWith resonant capacitance Cpv；Transmitting unit P2 includes the transmitting coil L being connected in parallelpiWith resonant capacitance Cppi；It receives Cell S 1 includes the receiving coil L being connected in seriessvWith resonant capacitance Csv；Receiving unit S2 includes the receiving coil being connected in parallel LsiWith resonant capacitance Cspi.Power supply E and transmitting unit P1, transmitting unit P2 are sequentially connected in series, receiving unit S2, receiving unit S1 and Load resistance REIt is sequentially connected in series, transmitting coil LpvWith receiving coil LsvBetween pass through mutual inductance MvCoupling, transmitting coil LpiWith reception line Enclose LsiPass through mutual inductance MiCoupling.
Resonant element parameter meets:
Wherein, ω0For resonance frequency.LrWith CrResonance flows through transmitting coil LpvElectric currentIt is constant.When work is in resonance Frequencies omega0When, flow through transmitting coil Lpv, transmitting coil Lpi, receiving coil LsiWith receiving coil LsvElectric currentWithIt is respectively as follows:
Output voltage gain is respectively as follows: with input impedance
Wherein,For output voltage.kv、kiFor mutual inductance Mv、MiThe corresponding coefficient of coup.Under the conditions of full remuneration, the present invention The output voltage gain of embodiment three is unrelated with load, and input impedance is always pure resistance.By mutual inductance Mv、MiWith corresponding coupled systemes Number kv、kiIt indicates, enables kv=aki+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of output voltage The minimum point of gain and corresponding coefficient of coup keAre as follows:
Gvv(k) the output voltage gain when coefficient of coup is k, G are indicatedvv(ke) it is k=keWhen output voltage gain, into One step, output voltage gain mark with minimum, is had
Gvv* (k) indicates that the coefficient of coup is the output current gain after k markers, expression formula and the embodiment of the present invention one Expression formula is identical, has similar external characteristics.Then pass through designIt can be in given coefficient of coup section [kmin, kmax] in, it realizes the smallest output voltage fluctuation, improves the anti-offset characteristic of radio energy transmission system.The present invention is real It applies example three and requires transmitting coil Lpv, transmitting coil Lpi, receiving coil LsiWith receiving coil LsvFrom inductance value meet
Example IV:
Figure 16 gives the electricity of the 4th kind of embodiment of radio energy transmission system with highly resistance offset characteristic of the invention Line structure figure.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load resistance RE。 Power supply E includes alternating-current voltage sourceWith inductance Lr, capacitor CrThe LC resonance network of composition；Transmitting unit P1 includes transmitting coil Lpv；Transmitting unit P2 includes transmitting coil Lpi, resonant capacitance CpsiAnd Cppi, wherein transmitting coil LpiWith capacitor CpsiSeries connection connects After connecing again with capacitor CppiIt is connected in parallel；Receiving unit S1 includes receiving coil Lsv；Receiving unit S2 includes receiving coil Lsi、 Resonant capacitance CspiAnd Cssi, wherein receiving coil LsiWith capacitor CssiAfter series connection again with capacitor CspiIt is connected in parallel.Power supply E It is sequentially connected in series with transmitting unit P1, transmitting unit P2, receiving unit S2, receiving unit S1 and load resistance REIt is sequentially connected in series, sends out Ray circle LpvWith receiving coil LsvBetween pass through mutual inductance MvCoupling, transmitting coil LpiWith receiving coil LsiPass through mutual inductance MiCoupling.
Resonant element parameter meets:
Wherein, ω0For resonance frequency.LrWith CrResonance flows through transmitting coil LpvElectric currentIt is constant.When work is in resonance Frequencies omega0When, flow through transmitting coil Lpv, transmitting coil Lpi, receiving coil LsiWith receiving coil LsvElectric currentWith It is respectively as follows:
Output voltage gain is respectively as follows: with input impedance
Wherein,For output voltage.kv、kiFor mutual inductance Mv、MiIt is corresponding The coefficient of coup.Under the conditions of full remuneration, the output voltage gain of the embodiment of the present invention four is unrelated with load, and input impedance is always For pure resistance.Enable kv=aki+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of output voltage gain Minimum point and corresponding coefficient of coup keAre as follows:
Gvv(k) it indicates to export current gain, G when the coefficient of coup is kvv(ke) it is k=keWhen output voltage gain, difference Transmitting coil L in embodiment three, the embodiment of the present invention fourpv, transmitting coil Lpi, receiving coil LsiWith receiving coil Lsv's It is required to meet from inductance value:
λp=Lpv/Lpi, λs=Lsv/Lsi (33)
Further, output voltage gain mark with minimum, be had
Gvv* (k) indicates that the coefficient of coup is the output voltage gain after k markers, and the expression formula embodiment of the present invention one is marked After output current gain expression formula it is identical, have similar external characteristics.It can be found that mark after output voltage gain with The non-monotonic variation of the coefficient of coup, it is gentle in Near The Extreme Point variation, then pass through designIt can be in given coupling Collaboration number interval [kmin, kmax] in, realize that the smallest output voltage fluctuation, the anti-offset for improving radio energy transmission system are special Property, change and load in variation range in the wider coefficient of coup and realizes constant voltage output.
Embodiment five:
Figure 17 gives the electricity of the 5th kind of embodiment of radio energy transmission system with highly resistance offset characteristic of the invention Line structure figure.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load resistance RE。 Power supply E includes alternating-current voltage sourceWith inductance Lr, capacitor CrThe LC resonance network of composition；Transmitting unit P1 includes being connected in series Transmitting coil LpvWith resonant capacitance Cpv；Transmitting unit P2 includes transmitting coil Lpi, resonant capacitance CpsiAnd Cppi, wherein emission lines Enclose LpiWith capacitor CpsiAfter series connection again with capacitor CppiIt is connected in parallel；Receiving unit S1 includes the receiving coil being connected in series LsvWith resonant capacitance Csv；Receiving unit S2 includes receiving coil Lsi, resonant capacitance CspiAnd Cssi, wherein receiving coil LsiWith electricity Hold CssiAfter series connection again with capacitor CspiIt is connected in parallel.Power supply E and transmitting unit P1, transmitting unit P2 are sequentially connected in series, and are received Cell S 2, receiving unit S1 and load resistance REIt is sequentially connected in series, transmitting coil LpvWith receiving coil LsvBetween pass through mutual inductance MvCoupling, Transmitting coil LpiWith receiving coil LsiPass through mutual inductance MiCoupling.
Resonant element parameter meets:
Wherein, ω0For resonance frequency.LrWith CrResonance flows through transmitting coil LpvElectric currentIt is constant.When work is in resonance Frequencies omega0When, flow through transmitting coil Lpv, transmitting coil Lpi, receiving coil LsiWith receiving coil LsvElectric currentWithIt is respectively as follows:
Output voltage gain is respectively as follows: with input impedance
Wherein,For output voltage,kv、kiFor mutual inductance Mv、MiIt is corresponding The coefficient of coup.Under the conditions of full remuneration, the output voltage gain of the embodiment of the present invention five is unrelated with load, and input impedance is always For pure resistance.Enable kv=aki+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of output voltage gain Minimum point and corresponding coefficient of coup keAre as follows:
Gvv(k) the output voltage gain when coefficient of coup is k, G are indicatedvv(ke) it is k=keWhen output voltage gain, into One step, output voltage gain mark with minimum, is had
Gvv* (k) indicates that the coefficient of coup is the output voltage gain after k markers, and the expression formula embodiment of the present invention one is marked After output current gain expression formula it is identical, have similar external characteristics.It can be found that mark after output voltage gain with The non-monotonic variation of the coefficient of coup, it is gentle in Near The Extreme Point variation, then by reasonably designingIt can give Fixed coefficient of coup section [kmin, kmax] in, it realizes the smallest output voltage fluctuation, improves the anti-of radio energy transmission system Offset characteristic.
It is different from the embodiment of the present invention four, embodiment three, the compensating electric capacity C in embodiment fivepsi、CssiTo realize output Voltage fluctuation minimum provides design freedom, that is, is directed to any non-contact transformer parameter, adjustable compensating electric capacity Cpsi、 CssiValue meetTo realize constant voltage output in the wider coefficient of coup and load variation range.
Embodiment six:
Figure 18 gives the electricity of the 6th kind of embodiment of radio energy transmission system with highly resistance offset characteristic of the invention Line structure figure.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load resistance RE。 Power supply E includes alternating-current voltage sourceWith inductance Lr, capacitor CrThe LC resonance network of composition；Transmitting unit P1 includes being connected in series Transmitting coil LpvWith resonant capacitance Cpv；Transmitting unit P2 includes transmitting coil LpiWith resonant capacitance Cppi、Cpsi, LpiWith CpsiString Connection connection after with CppiIt is connected in parallel；Receiving unit S1 includes the receiving coil L being connected in seriessiWith resonant capacitance Csi；It receives single First S2 includes receiving coil Lsv, resonant capacitance Cspv、CspvWith resonant inductance Lrs, wherein LsvWith CssvAfter series connection with CspvAnd Connection connection, then with LrsIt is connected in series.Power supply E and transmitting unit P1, transmitting unit P2 are sequentially connected in series, receiving unit S2 and reception Cell S 1 be connected in parallel after to load resistance REPower supply, transmitting coil LpvWith receiving coil LsvPass through mutual inductance MvCoupling, emission lines Enclose LpiWith receiving coil LsiPass through mutual inductance MiCoupling.
Resonant element parameter meets:
Wherein, ω0For resonance frequency.LrWith CrResonance flows through transmitting coil LpvElectric currentIt is constant.It is basic according to circuit Theory can be in the hope of resonance frequency omega0Under flow through transmitting coil Lpv, transmitting coil Lpi, receiving coil LsiWith receiving coil Lsv's Electric currentWithIt is respectively as follows:
Wherein,Further, output current gain and input impedance point Not are as follows:
Wherein,To export electric current, kv、kiFor mutual inductance Mv、MiThe corresponding coefficient of coup.Under the conditions of full remuneration, the present invention The output current gain of embodiment one is unrelated with load, and input impedance is always pure resistance.Enable kv=aki+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of the minimum point and corresponding coupled systemes of output current gain Number keAre as follows:
Giv(k) it indicates to export current gain, G when the coefficient of coup is kiv(ke) it is k=keWhen output current gain, into One step, output current gain mark with minimum, is had
Giv* (k) indicates that the coefficient of coup is the output current gain after k markers.Output current gain and sheet after mark Inventive embodiments one are identical, then pass through designIt can be in given coefficient of coup section [kmin, kmax] in, It realizes the smallest output current fluctuation, improves the anti-offset characteristic of radio energy transmission system.
It is different from the embodiment of the present invention one, the compensating electric capacity C in embodiment sixpsi、CssiTo realize minimum output current Fluctuation provides design freedom, that is, is directed to any non-contact transformer parameter, adjustable compensating electric capacity Cpsi、CssvValue To meetTo realize constant current output in the wider coefficient of coup and load variation range.
Embodiment seven:
Figure 19 gives the electricity of the 7th kind of embodiment of radio energy transmission system with highly resistance offset characteristic of the invention Line structure figure.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load resistance RE。 Power supply E includes alternating-current voltage sourceWith inductance Lr1, capacitor Cr, inductance Lr2The LC resonance network of composition；Transmitting unit P1 includes string Join the transmitting coil L of connectionpvWith resonant capacitance Cpv；Transmitting unit P2 includes transmitting coil Lpi, resonant capacitance CppiWith resonance electricity Feel Lsr, wherein transmitting coil LpiWith capacitor CppiParallel connection, then with resonant inductance LsrIt is connected in series；Receiving unit S1 includes that series connection connects The receiving coil L connectsvWith resonant capacitance Csv；Receiving unit S2 includes receiving coil Lsi, resonant capacitance CspiAnd resonant inductance Lssi, wherein LsiWith CspiBe connected in parallel, then with LssiIt is connected in series.By power supply E after transmitting unit P1 is in parallel with transmitting unit P2 Power supply, receiving unit S2 and receiving unit S1 be connected in parallel after to load resistance REPower supply, transmitting coil LpvWith receiving coil Lsv Between pass through mutual inductance MvCoupling, transmitting coil LpiWith receiving coil LsiPass through mutual inductance MiCoupling.
Resonant element parameter meets:
Wherein, ω0For resonance frequency.Lr1With CrResonance, electric currentIt is constant.It can be in the hope of resonance according to Basis Theory of Circuitry Frequencies omega0Under flow through transmitting coil Lpv, transmitting coil Lpi, receiving coil LsiWith receiving coil LsvElectric currentWithIt is respectively as follows:
Further, output voltage gain is respectively as follows: with input impedance
Wherein,For output voltage, kv、kiFor mutual inductance Mv、MiThe corresponding coefficient of coup.Under the conditions of full remuneration, the present invention The output voltage gain of embodiment seven is unrelated with load, and input impedance is always pure resistance.Enable ki=akv+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of the maximum point and corresponding coupled systemes of output voltage gain Number keAre as follows:
Gvv(k) the output voltage gain when coefficient of coup is k, G are indicatediv(ke) it is k=keWhen output voltage gain, into One step, output voltage gain mark with maximum, is had
Gvv* (k) indicates that the coefficient of coup is the output voltage gain after k markers, expression formula and the embodiment of the present invention two Output voltage gain expression formula after mark is identical, then passes through designIt can be in given coefficient of coup area Between [kmin, kmax] in, it realizes the smallest output voltage fluctuation, improves the anti-offset characteristic of radio energy transmission system.
It is different from embodiment two, in a ≈ 1, the embodiment of the present invention seven requires non-contact transformer winding self-induction Lpv、Lpi、 LsiAnd LsvApproximation meets
It can be in effective coupling coefficient section [kmin, kmax] realize the smallest output voltage fluctuation.
Embodiment eight:
Figure 20, Figure 21 give the 8th kind of embodiment of radio energy transmission system with highly resistance offset characteristic of the invention Circuit structure diagram.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load resistance RE.Power supply E includes alternating-current voltage sourceWith inductance Lr1, capacitor CrThe LC resonance network of composition；Transmitting unit P1 includes that series connection connects The transmitting coil L connectpvWith resonant capacitance Cpv；Transmitting unit P2 includes the transmitting coil L of coupling inductance T1 and series connectionpi、 Resonant capacitance Cpsi；Receiving unit S1 includes the receiving coil L of coupling inductance T2 and series connectionsi, resonant capacitance Cssi；It receives Cell S 2 includes the receiving coil L being connected in seriessvWith resonant capacitance Csv.Power supply E and transmitting unit P1, transmitting unit P2 are successively Series connection, receiving unit S1, receiving unit S2 and load resistance REIt is sequentially connected in series, transmitting coil LpvWith receiving coil LsvBetween pass through Mutual inductance MvCoupling, transmitting coil LpiWith receiving coil LsiPass through mutual inductance MiCoupling.
Coupling inductance T1 includes self-induction L1、L2With mutual inductance M12, coupling inductance T2 includes self-induction L3、L4With mutual inductance M34, such as Figure 20 It is shown, L1、L2Forward connect, L1With transmitting coil LpvIt is connected in series, L2With transmitting coil LpiIt is connected in series；L3、L4Forward go here and there Connection, L3With receiving coil LsvIt is connected in series, L4With receiving coil LsiIt is connected in series.As shown in figure 21, coupling inductance T1, T2 is also It can be isolated structure, L1、L2Without electrical connection, pass through mutual inductance M12Realize magnetic flux coupling；Similarly, L3、L4Without electrical Connection, passes through mutual inductance M34Realize magnetic flux coupling.
Resonant element parameter meets in circuit shown in Figure 20, Figure 21:
Wherein, ω0For resonance frequency.Lr1With CrResonance, electric currentIt is constant.It can be in the hope of resonance according to Basis Theory of Circuitry Frequencies omega0Lower output voltage gain are as follows:
Wherein,For output voltage, kv、kiFor mutual inductance Mv、MiThe corresponding coefficient of coup.Under the conditions of full remuneration, the present invention The output voltage gain of embodiment eight is unrelated with load, and input impedance is always pure resistance, has similar outer spy with embodiment five Property.
Enable kv=aki+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of output voltage gain Minimum point and corresponding coefficient of coup keAre as follows:
Gvv(k) the output voltage gain when coefficient of coup is k, G are indicatedvv(ke) it is k=keWhen output voltage gain, into One step, output voltage gain mark with minimum, is had
Gvv* (k) indicates that the coefficient of coup is the output voltage gain after k markers, expression formula and the embodiment of the present invention one Output current gain expression formula after mark is identical, then passes through designIt can be in given coefficient of coup area Between [kmin, kmax] in, it realizes the smallest output voltage fluctuation, improves the anti-offset characteristic of radio energy transmission system.
Further, it is also possible to by winding L1With Lpv, winding L2With Lpi, winding L3With Lsv, winding L4With LsiIt is integrated, realize winding It shares, reduces winding volume and weight, as shown in figure 22.It is worth noting that, transmitting coil L herepvWith Lpi, receiving coil LsvWith LsiThere is magnetic flux coupling, Same Name of Ends indicates that corresponding mutual inductance is respectively M with " "12、M34。
Embodiment nine:
Figure 23, Figure 24 give the 9th kind of embodiment of radio energy transmission system with highly resistance offset characteristic of the invention Circuit structure diagram.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load resistance RE.Power supply E is alternating-current voltage sourceTransmitting unit P1 includes the transmitting coil L being connected in seriespvWith resonant capacitance Cpv；Transmitting is single First P2 includes the transmitting coil L of coupling inductance T1 and series connectionpi, resonant capacitance Cpsi；Receiving unit S1 includes coupling inductance The receiving coil L of T2 and series connectionsi, resonant capacitance Cssi；Receiving unit S2 includes the receiving coil L being connected in seriessvIt is harmonious Shake capacitor Cspv.Power supply E and transmitting unit P1, transmitting unit P2 are sequentially connected in series, receiving unit S1, receiving unit S2 and load electricity Hinder REIt is sequentially connected in series, transmitting coil LpvWith receiving coil LsvBetween pass through mutual inductance MvCoupling, transmitting coil LpiWith receiving coil Lsi Pass through mutual inductance MiCoupling.
Coupling inductance T1 includes self-induction L1、L2With mutual inductance M12, coupling inductance T2 includes self-induction L3、L4With mutual inductance M34, such as Figure 23 It is shown, L1、L2Forward connect, L1With transmitting coil LpvIt is connected in series, L2With transmitting coil LpiIt is connected in series.Resonant element in circuit Part parameter meets:
Wherein, ω0For resonance frequency.It can be in the hope of resonance frequency omega according to Basis Theory of Circuitry0Lower output current gain with Input impedance are as follows:
Wherein,To export electric current, kv、kiFor mutual inductance Mv、MiThe corresponding coefficient of coup.Under the conditions of full remuneration, the present invention The output current gain of embodiment nine is unrelated with load, and input impedance is always pure resistance.Enable kv=aki+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of the maximum point and corresponding coupled systemes of output current gain Number keAre as follows:
Giv(k) it indicates to export current gain, G when the coefficient of coup is kiv(ke) it is k=keWhen output current gain, into One step, output current gain mark with maximum, is had
Giv* (k) indicates that the coefficient of coup is the output current gain after k markers, expression formula and the embodiment of the present invention two Output voltage gain expression formula after mark is identical, then passes through designIt can be in given coefficient of coup area Between [kmin, kmax] in, it realizes the smallest output current fluctuation, improves the anti-offset characteristic of radio energy transmission system.
Further, it is also possible to by winding L1With Lpv, winding L2With Lpi, winding L3With Lsv, winding L4With LsiIt is integrated, realize winding It shares, reduces winding volume and weight, as shown in figure 24.It is worth noting that, transmitting coil L herepvWith Lpi, receiving coil LsvWith LsiThere is magnetic flux coupling, Same Name of Ends indicates that corresponding mutual inductance is respectively M with " "12、M34。
Embodiment ten:
Figure 25 to Figure 27 gives the tenth kind of the radio energy transmission system implementation with highly resistance offset characteristic of the invention The circuit structure diagram of example.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load electricity Hinder RE.Power supply E includes alternating-current voltage sourceWith inductance Lr, capacitor CrThe LC resonance network of composition；Transmitting unit P1 includes that series connection connects The transmitting coil L connectpvWith resonant capacitance Cpv；Transmitting unit P2 includes the transmitting coil L of coupling inductance T1 and series connectionpi、 Resonant capacitance Cpsi；Receiving unit S1 includes the receiving coil L of coupling inductance T2 and series connectionsi, resonant capacitance Cssi；It receives Cell S 2 includes receiving coil Lsv, resonant capacitance Csv、CqWith resonant inductance Lq, wherein LsvWith CsvAfter series connection with CqIt is in parallel Connection, then with LqSeries connection.Power supply E and transmitting unit P1, transmitting unit P2 are sequentially connected in series, receiving unit S2, receiving unit S1 with Load resistance REIt is sequentially connected in series, transmitting coil LpvWith receiving coil LsvBetween pass through mutual inductance MvCoupling, transmitting coil LpiWith reception line Enclose LsiPass through mutual inductance MiCoupling.
Coupling inductance T1 includes self-induction L1、L2With mutual inductance M12, coupling inductance T2 includes self-induction L3、L4With mutual inductance M34, such as Figure 25 It is shown, L1、L2Forward connect, L1With transmitting coil LpvIt is connected in series, L2With transmitting coil LpiIt is connected in series；L3、L4Forward go here and there Connection, L3With receiving coil LsvIt is connected in series, L4With receiving coil LsiIt is connected in series.As shown in figure 26, coupling inductance T1, T2 is also It can be isolated structure, L1、L2Without electrical connection, pass through mutual inductance M12Realize magnetic flux coupling；Similarly, L3、L4Without electrical Connection, passes through mutual inductance M34Realize magnetic flux coupling.Resonant element parameter meets in circuit:
Wherein, ω0For resonance frequency.LrWith CrResonance, electric currentIt is constant.It can be in the hope of resonance frequency according to Basis Theory of Circuitry Rate ω0Lower output current gain are as follows:
Wherein,To export electric current, kv、kiFor mutual inductance Mv、MiThe corresponding coefficient of coup.Under the conditions of full remuneration, the present invention The output current gain of embodiment ten is unrelated with load, and input impedance is always pure resistance.
Enable kv=aki+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of output current gain Minimum point and corresponding coefficient of coup keAre as follows:
Giv(k) it indicates to export current gain, G when the coefficient of coup is kiv(ke) it is k=keWhen output current gain, into One step, output voltage gain mark with minimum, is had
Giv* (k) indicates that the coefficient of coup is the output current gain after k markers, expression formula and the embodiment of the present invention one Output current gain expression formula after mark is identical, then passes through designIt can be in given coefficient of coup area Between [kmin, kmax] in, it realizes the smallest output current fluctuation, improves the anti-offset characteristic of radio energy transmission system.
Embodiment 11:
Figure 28 gives a kind of embodiment of radio energy transmission system the tenth with highly resistance offset characteristic of the invention Circuit structure diagram.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load resistance RE.Power supply E is ac current sourceLC resonance network transformation can also be added to obtain with alternating-current voltage source；Transmitting unit P1 includes string Join the transmitting coil L of connectionpvWith resonant capacitance Cpv；Transmitting unit P2 includes coupling inductance T1, resonant capacitance C1And series connection connects The transmitting coil L connectpi, resonant capacitance Cpsi；Receiving unit S1 includes the receiving coil L being connected in seriessvWith resonant capacitance Csv； Receiving unit S2 includes coupling inductance T2, resonant capacitance C2And the receiving coil L being connected in seriessi, resonant capacitance Cssi.Transmitting It is powered after unit P1 is in parallel with transmitting unit P2 by power supply E, receiving unit S2 and receiving unit S1 gives load electricity after being connected in parallel Hinder REPower supply, transmitting coil LpvWith receiving coil LsvBetween pass through mutual inductance MvCoupling, transmitting coil LpiWith receiving coil LsiBy mutual Feel MiCoupling.
Coupling inductance T1 includes self-induction L1、L2With mutual inductance M12, coupling inductance T2 includes self-induction L3、L4With mutual inductance M34, L1With C1 It is connected in series, L3With C2It is connected in series, L2With LpiIt is connected in series, L4With LsiIt is connected in series, as shown in figure 28, coupling inductance T1, T2 is isolated structure, L1、L2Without electrical connection, pass through mutual inductance M12Realize magnetic flux coupling；Similarly, L3、L4Nothing electrically connects It connects, passes through mutual inductance M34Realize magnetic flux coupling.The coupling inductance structure that similar Figure 25 is provided, L1With L2、L3With L4It can also be forward It is connected in series.
Resonant element parameter meets in Figure 28:
Wherein, ω0For resonance frequency.It can be in the hope of resonance frequency omega according to Basis Theory of Circuitry0Lower output voltage gain Are as follows:
Wherein,For output voltage, kv、kiFor mutual inductance Mv、MiThe corresponding coefficient of coup.Under the conditions of full remuneration, the present invention The output voltage gain of embodiment 11 is unrelated with load, and input impedance is always pure resistance.Enable ki=akv+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of the maximum point and corresponding coupled systemes of output voltage gain Number keAre as follows:
Gvi(k) the output voltage gain when coefficient of coup is k, G are indicatedvi(ke) it is k=keWhen output voltage gain, into One step, output voltage gain mark with maximum, is had
Gvi* (k) indicates that the coefficient of coup is the output voltage gain after k markers, expression formula and the embodiment of the present invention two Output voltage gain after mark is identical, then passes through designIt can be in given coefficient of coup section [kmin, kmax] in, it realizes the smallest output voltage fluctuation, improves the anti-offset characteristic of radio energy transmission system.
Embodiment 12:
Figure 29 gives the 12nd kind of embodiment of radio energy transmission system with highly resistance offset characteristic of the invention Circuit structure diagram.Including power supply E, transmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and equivalent load electricity Hinder RE.Power supply E is ac current sourceLC resonance network transformation can also be added to obtain with alternating-current voltage source；Transmitting unit P1 includes The transmitting coil L of series connectionpvWith resonant capacitance Cpv；Transmitting unit P2 includes coupling inductance T1, resonant capacitance C1, emission lines Enclose LpiWith resonant capacitance Cpsi, wherein LpiAnd CpsiIt is connected in series；Receiving unit S1 includes receiving coil LsvAnd resonant capacitance Cssv、Cspv, wherein LsvAnd CssvAfter series connection with capacitor CspvIt is connected in parallel；Receiving unit S2 includes the reception being connected in series Coil LsiWith resonant capacitance Csi.It is powered after transmitting unit P1 is in parallel with transmitting unit P2 by power supply E, receiving unit S1, is received Cell S 2 and load resistance REIt is sequentially connected in series, transmitting coil LpvWith receiving coil LsvBetween pass through mutual inductance MvCoupling, emission lines Enclose LpiWith receiving coil LsiPass through mutual inductance MiCoupling.
As shown in figure 29, coupling inductance T1 includes self-induction L1、L2With mutual inductance M12, L1With C1It is connected in series, L2With LpiSeries connection connects It connects, coupling inductance T1 is isolated structure, L1、L2Without electrical connection, pass through mutual inductance M12Realize magnetic flux coupling.With reference to Figure 25 The coupling inductance structure provided, L1With L2It can also forward be connected in series.This External Reference Figure 25, receiving side resonant capacitance Cspv? It could alternatively be coupling inductance.
Resonant element parameter meets in Figure 29:
Wherein, ω0For resonance frequency.It can be in the hope of resonance frequency omega according to Basis Theory of Circuitry0Lower output current gain Are as follows:
Wherein,To export electric current, kv、kiFor mutual inductance Mv、MiThe corresponding coefficient of coup.Under the conditions of full remuneration, the present invention The output current gain of embodiment 12 is unrelated with load, and input impedance is always pure resistance.Enable ki=akv+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of the maximum point and corresponding coupled systemes of output current gain Number keAre as follows:
Gii(k) it indicates to export current gain, G when the coefficient of coup is kii(ke) it is k=keWhen output current gain, into One step, output current gain mark with maximum, is had
Gii* (k) indicates that the coefficient of coup is the output current gain after k markers, expression formula and it can be found that and this hair Output voltage gain after bright embodiment two is marked is identical, then passes through designIt can be in given coupled systemes Number interval [kmin, kmax] in, it realizes the smallest output current fluctuation, improves the anti-offset characteristic of radio energy transmission system.
Embodiment 13:
Figure 30 gives the 13rd kind of embodiment of radio energy transmission system with highly resistance offset characteristic of the invention Circuit structure diagram.Including alternating-current voltage sourceTransmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2 and load Resistance RE.Transmitting unit P1 includes transmitting coil Lpv；Transmitting unit P2 includes transmitting coil Lpi, resonant capacitance CpsiAnd Cppi, Middle transmitting coil LpiWith capacitor CpsiAfter series connection again with capacitor CppiIt is connected in parallel；Receiving unit S1 includes receiving coil Lsv；Receiving unit S2 includes receiving coil Lsi, resonant capacitance CspiAnd Cssi, wherein receiving coil LsiWith capacitor CssiSeries connection connects After connecing again with capacitor CspiIt is connected in parallel.Alternating-current voltage sourceIt is sequentially connected in series with transmitting unit P1, transmitting unit P2, receiving unit S2, receiving unit S1 and load resistance REIt is sequentially connected in series, transmitting coil LpvWith receiving coil LsvPass through mutual inductance MvCoupling, transmitting Coil LpiWith receiving coil LsiPass through mutual inductance MiCoupling.
Resonant element parameter meets:
Wherein, ω0For resonance frequency.It then can be in the hope of resonance frequency omega according to Basis Theory of Circuitry0Locate corresponding winding electricity Stream is
WhereinWithRespectively flow through transmitting coil Lpv, transmitting coil Lpi, receiving coil LsiAnd receiving coil LsvElectric current.Further, the output current gain of the embodiment of the present invention 13 is respectively as follows: with input impedance
Wherein,To export electric current,kv、kiFor mutual inductance Mv、MiIt is corresponding The coefficient of coup.It can be seen that the output current gain of the embodiment of the present invention 13 is unrelated with load, defeated under the conditions of being fully compensated Entering impedance is always pure resistance.Enable kv=aki+ b=ak+b,A, b is constant, and k is the coefficient of coup, can be in the hope of defeated The maximum point of current gain and corresponding coefficient of coup k outeAre as follows:
Further, output current gain mark with maximum, be had
Giv* (k) indicates that the coefficient of coup is the output current gain after k markers, expression formula and the embodiment of the present invention two Output voltage gain expression formula after mark is identical, gentle in Near The Extreme Point variation with the non-monotonic variation of the coefficient of coup, then Pass through designIt can be in given coefficient of coup section [kmin, kmax] in, realize the smallest output current wave It is dynamic, improve the anti-offset characteristic of radio energy transmission system.
Transmitting coil L in the embodiment of the present invention 13pv, transmitting coil Lpi, receiving coil LsiWith receiving coil Lsv's It is also required to meet from inductance value:
λp=Lpv/Lpi, λs=Lsv/Lsi (85)
Embodiment 14:
Figure 31 gives the 14th kind of embodiment of radio energy transmission system with highly resistance offset characteristic of the invention Circuit structure diagram.Including alternating-current voltage sourceTransmitting unit P1, transmitting unit P2, receiving unit S1, receiving unit S2, rectification Filter circuit R and load resistance RL.Transmitting unit P1 includes the transmitting coil L being connected in seriespvWith resonant capacitance Cpv；Transmitting is single First P2 includes the transmitting coil L being connected in parallelpiWith resonant capacitance Cppi；Receiving unit S1 includes the receiving coil being connected in series LsvWith resonant capacitance Csv；Receiving unit S2 includes the receiving coil L being connected in parallelsiWith resonant capacitance Cspi.Alternating-current voltage source It is sequentially connected in series with transmitting unit P1, transmitting unit P2, receiving unit S2, receiving unit S1 and load resistance REIt is sequentially connected in series, sends out Ray circle LpvWith receiving coil LsvBetween pass through mutual inductance MvCoupling, transmitting coil LpiWith receiving coil LsiPass through mutual inductance MiCoupling.
Resonant element parameter meets:
Wherein, ω0For resonance frequency.When work is in resonance frequency omega0When, it can be derived by according to Basis Theory of Circuitry Output current gain is respectively as follows: with input impedance
Wherein,To export electric current kv、kiFor mutual inductance Mv、MiThe corresponding coefficient of coup.In the embodiment of the present invention 13 The winding current that provides, output current gain are identical as input impedance expression formula, then the embodiment of the present invention 14 and embodiment 13 have similar performance.Under the conditions of full remuneration, the output current gain of the embodiment of the present invention 14 is unrelated with load, defeated Entering impedance is always pure resistance.Enable kv=aki+ b=ak+b,A, b is constant, and k is the coefficient of coup, equally can be in the hope of The maximum point and corresponding coefficient of coup k of current gain must be exportedeAre as follows:
Giv(k) it indicates to export current gain, G when the coefficient of coup is kiv(ke) it is k=keWhen output current gain, into One step, output current gain mark with maximum, is had
Giv* (k) indicates that the coefficient of coup is the output current gain after k markers, expression formula and the embodiment of the present invention two Output voltage gain expression formula after mark is identical, gentle in Near The Extreme Point variation with the non-monotonic variation of the coefficient of coup, then Pass through designIt can be in given coefficient of coup section [kmin, kmax] in, realize the smallest output current wave It is dynamic, improve the anti-offset characteristic of radio energy transmission system.
The embodiment of the present invention 14 requires transmitting coil Lpv, transmitting coil Lpi, receiving coil LsiWith receiving coil LsvFrom Inductance value meets
It can be in effective coupling coefficient section [kmin, kmax] realize the smallest output current fluctuation ξ.
Test case one:
To verify feasibility of the invention, it is with the radio energy transmission system shown in Figure 23 with highly resistance offset characteristic Example, using non-contact transformer structure shown in Fig. 1, has carried out experimental verification.Following table is non-contact transformation used by this test The specific value of the secondary side self-induction of original of the device when air gap is 5cm and compensating electric capacity.Under different air gap spacing, used in this test The mutual inductance of non-contact transformer and coefficient of coup curve are as shown in figure 32, it can be seen that non-contact transformation used in the present invention The mutual inductance M of device structure one1、M2、M3And M4Always very little is approximately zero, mutual inductance MiAnd MvAs air-gap separation becomes larger with approximate phase Deng amplitude reduce.
Table 1: resonant element parameter
The input voltage V of this testinFor 50V, resonance frequency f0For 85kHz, then ω0=2 π f0, effective coupling coefficient section For [0.117,0.4], the average anode current measured under different air gap spacing is as shown in figure 33, it can be seen that institute of the present invention The radio energy transmission system with highly resistance offset characteristic proposed can effectively improve contactless power supply system under offset operating condition The degree of stability of output characteristics, while output stability of output voltage characteristic under the conditions of varying load is kept, at 3.4 times In coefficient of coup variation range, output current fluctuation ξ is only 1.2.
Test case two:
To verify feasibility of the invention, it is with the radio energy transmission system shown in Figure 18 with highly resistance offset characteristic Example, using non-contact transformer structure shown in Fig. 1, has carried out experimental verification.Following table is non-contact transformation used by this test The specific value of the secondary side self-induction of original of the device when air gap is 5cm and compensating electric capacity.Under different air gap spacing, used in this test The mutual inductance of non-contact transformer and coefficient of coup curve are as shown in figure 32, it can be seen that non-contact transformation used in the present invention The mutual inductance M of device structure one1、M2、M3And M4Always very little is approximately zero, mutual inductance MiAnd MvAs air-gap separation becomes larger with approximate phase Deng amplitude reduce.
Table 2: resonant element parameter
The input voltage V of this testinFor 50V, resonance frequency f0For 85kHz, then ω0=2 π f0, effective coupling coefficient section For [0.117,0.4], the DC output voltage measured under different air gap spacing is as shown in figure 34, it can be seen that institute of the present invention The radio energy transmission system with highly resistance offset characteristic proposed can effectively improve contactless power supply system under offset operating condition The degree of stability of output characteristics, while output stability of output voltage characteristic under the conditions of varying load is kept, at 3.4 times In coefficient of coup variation range, output voltage fluctuates ξvOnly 1.2.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (7)

1. a kind of radio energy transmission system with highly resistance offset characteristic, it is characterised in that: including power supply E, transmitting unit P1, Transmitting unit P2, receiving unit S1, receiving unit S2, current rectifying and wave filtering circuit and load resistance；
The transmitting unit P1 includes the transmitting coil T1 and impedance unit Z01 being connected in series；
The transmitting unit P2 includes transmitting coil T2, series impedance unit Z02a and parallel impedance unit Z02b, T2 and Z02a Be connected in parallel again with Z02b after series connection or T2 and Z02b be connected in parallel after be connected in series again with Z02a；
The receiving unit S1 includes the receiving coil R1 and impedance unit Z03 being connected in series；
The receiving unit S2 include and receiving coil R2, series impedance unit Z04a and parallel impedance unit Z04b, R2 with Z04a is connected in parallel with Z04b again after being connected in series or R2 and Z04b be connected in parallel after be connected in series again with Z04a；
Described impedance unit Z01, Z03, Z02a, Z04a be conducting wire or single inductance or single capacitor or by multiple inductance capacitance strings, simultaneously Connection combination；
The impedance unit Z02 and/or Z04 is single inductance or single capacitor or is combined by multiple inductance capacitance series and parallels；
Wherein: the power supply E and transmitting unit P1, transmitting unit P2 are sequentially connected in series, the receiving unit S2, receiving unit S1, Current rectifying and wave filtering circuit and load resistance are sequentially connected in series, and pass through mutual inductance M between the transmitting coil T1 and receiving coil R1vCoupling, Pass through mutual inductance M between the transmitting coil T2 and receiving coil R2iCoupling；
Or the power supply E and transmitting unit P1, transmitting unit P2 are sequentially connected in series, the receiving unit S1 is in parallel with receiving unit S2 It is sequentially connected in series after connection with current rectifying and wave filtering circuit and load resistance, passes through mutual inductance between the transmitting coil T1 and receiving coil R2 MvCoupling passes through mutual inductance M between the transmitting coil T2 and receiving coil R1iCoupling；
Or the transmitting unit P1 it is in parallel with transmitting unit P2 after powered by power supply E, the receiving unit S2, receiving unit S1, Current rectifying and wave filtering circuit and load resistance are sequentially connected in series, and pass through mutual inductance M between the transmitting coil T1 and receiving coil R2vCoupling, Pass through mutual inductance M between the transmitting coil T2 and receiving coil R1iCoupling；
Or the transmitting unit P1 it is in parallel with transmitting unit P2 after powered by power supply E, the receiving unit S1 and receiving unit S2 It is sequentially connected in series after being connected in parallel with current rectifying and wave filtering circuit and load resistance, passes through between the transmitting coil T1 and receiving coil R1 Mutual inductance MvCoupling passes through mutual inductance M between the transmitting coil T2 and receiving coil R2iCoupling.
2. a kind of radio energy transmission system with highly resistance offset characteristic according to claim 1, it is characterised in that: logical The loop construction and phase position that the transmitting coil T1, transmitting coil T2, receiving coil R1 and receiving coil R2 are set are crossed, is made It obtains between the transmitting coil T1 and transmitting coil T2, between transmitting coil T1 and receiving coil R1, transmitting coil T2 and reception Between coil R1, is coupled without magnetic flux under no drift condition between receiving coil R1 and receiving coil R2 or weak magnetic couples.
3. a kind of radio energy transmission system with highly resistance offset characteristic according to claim 1 or 2, feature exist In: the power supply E is AC constant voltage source or AC constant-current source, or is DC voltage source interconnected and high-frequency inverter structure At or constant-current source add LC network constitute；The AC constant-current source E could alternatively be AC constant voltage source add LC network transformation obtain or The mode of control circuit is realized.
4. a kind of radio energy transmission system with highly resistance offset characteristic according to claim 1 or 2, feature exist In the loop construction of: the transmitting coil T1, transmitting coil T2, receiving coil R1, receiving coil R2 be single coil structure, two-wire The structure of coil structures, multi-thread coil structures or solenoid structure, primary side magnetic core and/or secondary side magnetic core is U-shaped, I type, both sides column bottom Along the combination of side abducent edge expansion type, cross or above structure.
5. a kind of radio energy transmission system with highly resistance offset characteristic according to claim 4, it is characterised in that: institute State transmitting coil T1, transmitting coil T2, receiving coil R1, receiving coil R2 structure be planar structure or space structure.
6. a kind of radio energy transmission system with highly resistance offset characteristic according to claim 5, it is characterised in that: institute The conducting wire for stating transmitting coil and receiving coil selects solid conductor, Litz line, copper sheet, copper pipe or PCB winding.
7. a kind of radio energy transmission system with highly resistance offset characteristic according to claim 1 or 2, feature exist In: the impedance unit Z02b and/or Z04b is coupling inductance.
CN201910620368.0A 2019-07-10 2019-07-10 A kind of radio energy transmission system with highly resistance offset characteristic Pending CN110311473A (en)

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CN115257415A (en) * 2022-07-21 2022-11-01 广西电网有限责任公司电力科学研究院 Wireless energy transmitting coil of type 3D + Q and parameter design method

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CN210074889U (en) * 2019-07-10 2020-02-14 南京航空航天大学 Wireless power transmission system with high anti-offset characteristic

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DE102017206528A1 (en) * 2017-04-18 2018-10-31 Bayerische Motoren Werke Aktiengesellschaft Vehicle positioning for inductive energy transmission
CN107317401A (en) * 2017-08-10 2017-11-03 易事特集团股份有限公司 Anti- skew constant pressure output radio energy transmission system
CN210074889U (en) * 2019-07-10 2020-02-14 南京航空航天大学 Wireless power transmission system with high anti-offset characteristic

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CN113972752A (en) * 2021-11-19 2022-01-25 宁波道充科技有限公司 Coupling compensation structure for wireless power transmission
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